CN110855260B - Load adjusting method and device in transmission network and terminal equipment - Google Patents
Load adjusting method and device in transmission network and terminal equipment Download PDFInfo
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Abstract
The invention is suitable for the technical field of microwaves and provides a load adjusting method, a load adjusting device and terminal equipment in a transmission network. The method comprises the following steps: the method comprises the steps of obtaining S parameters of a first-stage load and signal source parameters of a transmission network where the first-stage load is located, wherein the transmission network further comprises a second-stage load; respectively calculating the dissipation power of the first-stage load and the dissipation power of the second-stage load according to the signal source parameters and the S parameters of the first-stage load; and regulating the resistance value of the corresponding load according to the dissipated power of the first-stage load and the dissipated power of the second-stage load. The invention can calculate the dissipation power of each power load, solves the problem of uneven heating of the load, and provides basis for the thermal design of the power load.
Description
Technical Field
The present invention belongs to the technical field of microwaves, and in particular, relates to a method, an apparatus, and a terminal device for adjusting a load in a transmission network.
Background
The power load is commonly used in a balanced limiter, and the main purpose of the limiter is to protect a receiver from being burnt by a high-power signal, and meanwhile, the limiter presents smaller insertion loss to the incident power of a small signal, for example, when the high-power signal is input, the limiter presents an isolation state, an input signal is subjected to power division by a 3dB bridge and then is reflected by the limiter, and then is synthesized and output by the 3dB bridge, wherein a part of power is dissipated by the power load. However, the dissipation power of the existing power load is difficult to determine, so that the situation of uneven heating often occurs, and the reliability of the limiter is reduced.
Disclosure of Invention
In view of the above, the embodiments of the present invention provide a method, an apparatus, and a terminal device for adjusting a load in a transmission network, so as to solve the problem that in the prior art, heat generation is often uneven in a power load.
A first aspect of an embodiment of the present invention provides a method for load adjustment in a transmission network, including:
the method comprises the steps of obtaining S parameters of a first-stage load and signal source parameters of a transmission network where the first-stage load is located, wherein the transmission network further comprises a second-stage load;
respectively calculating the dissipation power of the first-stage load and the dissipation power of the second-stage load according to the signal source parameters and the S parameters of the first-stage load;
and regulating the resistance value of the corresponding load according to the dissipated power of the first-stage load and the dissipated power of the second-stage load.
Optionally, calculating the dissipated power of the first stage load and the dissipated power of the second stage load according to the signal source parameter and the S parameter of the first stage load respectively includes:
calculating the total power of dissipation of a two-stage load cascade according to the signal source parameters and the input reflection coefficient of the first-stage load, and calculating the power of dissipation of the second-stage load according to the signal source parameters and the forward transmission coefficient of the first-stage load;
and calculating the dissipated power of the first stage load according to the dissipated total power and the dissipated power of the second stage load.
Optionally, the signal source parameter includes a power of a signal source;
correspondingly, calculating the total dissipation power of the two-stage load cascade according to the signal source parameters and the input reflection coefficient of the first-stage load, wherein the method comprises the following steps: by passing through
P L1,L2 ＝P A (W)-(P A (dBm)+dB(S 11 ))(W)
Obtaining the total power P of the two-stage load cascade L1,L2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is A (W) is the power of the signal source, and the unit is W, P A (dBm) is the power of the signal source, and is expressed as dBm, S 11 And the reflection coefficient is input to the first-stage load.
Optionally, calculating the dissipated power of the second stage load according to the signal source parameter and the forward transmission coefficient of the first stage load includes: by passing through
P L2 ＝P A (dBm)+dB(S 21 )
Obtaining dissipated power P of the second stage load L2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is A (dBm) is the power of the signal source, and is expressed as dBm, S 21 And the forward transmission coefficient of the first stage load.
Optionally, after acquiring the S parameter of the first-stage load and the signal source parameter of the transmission network where the first-stage load is located, the method further includes: acquiring an input reflection coefficient of the second-stage load;
correspondingly, respectively calculating the dissipation power of the first-stage load and the dissipation power of the second-stage load according to the signal source parameter and the S parameter of the first-stage load, and comprising the following steps:
calculating the total power of dissipation of the cascade connection of the two-stage loads and the power of dissipation of the second-stage load according to the signal source parameters, the S parameters of the first-stage load and the input reflection coefficient of the second-stage load;
and calculating the dissipated power of the first stage load according to the dissipated total power and the dissipated power of the second stage load.
Optionally, the signal source parameters include: the power of the signal source and the reflection coefficient of the signal source;
correspondingly, according to the signal source parameter, the S parameter of the first-stage load and the input reflection coefficient of the second-stage load, calculating the total power dissipated by the cascade of the two-stage loads and the power dissipated by the second-stage load, wherein the method comprises the following steps:
and calculating the dissipation power of the second-stage load and the total dissipation power of the cascade connection of the two-stage loads according to the service power of the signal source, the reflection coefficient of the signal source, the S parameter of the first-stage load and the input reflection coefficient of the second-stage load.
Optionally, calculating the total dissipation power of the two-stage load cascade according to the service power of the signal source, the reflection coefficient of the signal source, the S parameter of the first-stage load and the input reflection coefficient of the second-stage load, including: by passing through
Obtaining the total power P of the two-stage load cascade L1,L2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is A For the power of the signal source Γ S For the reflection coefficient of the signal source, S 11 For the input reflection coefficient of the first stage load, S 21 For the forward transmission coefficient of the first stage load, S 12 For the reverse transmission coefficient of the first stage load, S 22 For the output reflection coefficient of the first stage load,
and the reflection coefficient is input to the second-stage load.
A second aspect of an embodiment of the present invention provides a load adjustment device in a transmission network, including:
the system comprises an S parameter acquisition module, a first-stage load acquisition module and a second-stage load acquisition module, wherein the S parameter acquisition module is used for acquiring an S parameter of the first-stage load and a signal source parameter of a transmission network where the first-stage load is located, and the transmission network also comprises the second-stage load;
the dissipation power calculation module is used for calculating the dissipation power of the first-stage load and the dissipation power of the second-stage load according to the signal source parameter and the S parameter of the first-stage load respectively;
and the load adjusting module is used for adjusting the resistance value of the corresponding load according to the dissipated power of the first-stage load and the dissipated power of the second-stage load.
A third aspect of an embodiment of the present invention provides a terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the load regulation method in a transport network according to any one of the first aspect of the embodiment when the computer program is executed.
A fourth aspect of the embodiments of the present invention provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of the load adjustment method in a transport network as provided in any one of the first aspects of the embodiments.
Compared with the prior art, the embodiment of the invention has the beneficial effects that: the method comprises the steps of obtaining S parameters of a first-stage load and signal source parameters of a transmission network where the first-stage load is located, respectively calculating the dissipation power of the first-stage load and the dissipation power of a second-stage load according to the signal source parameters and the S parameters of the first-stage load, simply and accurately obtaining the dissipation power of each stage load, and providing a basis for thermal design of the power load; meanwhile, the resistance value of the corresponding load can be adjusted according to the dissipation power of the first-stage load and the dissipation power of the second-stage load, so that the problem of uneven heating is solved, and the reliability of the limiter is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of an implementation of a load adjustment method in a transmission network according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a balanced limiter according to an embodiment of the present invention;
FIG. 3 is a flowchart of a specific implementation of step S102 in FIG. 1;
fig. 4 is a schematic structural diagram of a two-stage load cascade according to an embodiment of the present invention;
FIG. 5 is a schematic flow chart of a power load signal of a signal source according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a cascade structure of n-stage resistive films according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a load adjusting device in a transmission network according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to illustrate the technical scheme of the invention, the following description is made by specific examples.
Referring to fig. 1, a schematic flow chart is implemented for an embodiment of a load adjustment method in a transmission network according to the present embodiment, which is described in detail below:
step S101, S parameters of a first-stage load and signal source parameters of a transmission network where the first-stage load is located are obtained, and the transmission network further comprises a second-stage load.
Referring to fig. 2, a schematic diagram of a balanced limiter is shown, and a power load is used in the balanced limiter. When a high-power signal is input, the internal limiter is in an isolated state, the input signal is subjected to power division by the 3dB bridge and then is reflected by the limiter, the reflected signal is synthesized by the 3dB bridge and output to enter a power load, and the power of the reflected signal is dissipated by the power load. When the frequency of the input signal is high, the resistive film on the power load often needs to be subjected to blocking treatment to improve the input standing wave of the input port, and when the power of the input signal is high, the dissipation power of each power load cannot be calculated, so that the selected power load often has uneven heating. The embodiment provides a load adjusting method in a load transmission network, which can be used in a transmission network including at least two stages of load cascading, as shown in fig. 4, an S parameter of a first stage load obtained in this embodiment is a generalized S parameter.
And step S102, respectively calculating the dissipation power of the first-stage load and the dissipation power of the second-stage load according to the signal source parameters and the S parameters of the first-stage load.
And step S103, adjusting the resistance value of the corresponding load according to the dissipated power of the first-stage load and the dissipated power of the second-stage load.
The embodiment realizes the load regulation in the transmission network of the power load in the high-power balance limiter. In practical applications, simulation software such as HFSS (High Frequency Structure Simulator, high-frequency structure simulation) may be used to extract the narrow-sense S parameter of the resistive film 1 (the first-stage load) in the transmission network (the narrow-sense S parameter may change along with the change of the network), and the ADS (Automation Device Specification, automation equipment specification) simulation software is used to convert the narrow-sense S parameter of the resistive film 1 into the broad-sense S parameter, and obtain the signal source parameter, and then combine with the signal flow chart of the cascade network, as shown in fig. 5, to obtain the functional relationship between the dissipation power of each resistive film and the incident power of the signal source, so as to calculate the dissipation power of each resistive film. The generalized S parameter is obtained by normalizing the narrow S parameter, and illustratively, the normalized impedance of the narrow S parameter in this embodiment is 50Ω, and the normalized impedance of the generalized S parameter is an arbitrary value, and the narrow S parameter and the generalized S parameter can be converted.
The load adjusting method in the transmission network of the embodiment fills the blank of load adjustment in the transmission network of the load, further adjusts the power dissipation of different resistance films according to the dissipation power, solves the problem of uneven heating, provides a basis for the thermal design of the power load, improves the power resistance and the reliability of the load, and enables the power load to be applied to microwaves, radio frequencies and higher frequencies.
In one embodiment, referring to fig. 3, a specific implementation procedure of calculating the dissipated power of the first stage load and the dissipated power of the second stage load according to the signal source parameter and the S parameter of the first stage load in step S102 includes:
step S301, calculating the total power of dissipation of the two-stage load cascade according to the signal source parameter and the input reflection coefficient of the first-stage load, and calculating the power of dissipation of the second-stage load according to the signal source parameter and the forward transmission coefficient of the first-stage load.
Step S302, calculating the dissipated power of the first stage load according to the dissipated total power and the dissipated power of the second stage load.
The S parameter of the first stage load comprises an input reflection coefficient S 11 Forward transmission coefficient S 21 Reverse transmission coefficient S 12 And output reflection coefficient S 22 。
Optionally, the signal source parameter includes a power of the signal source, where the power of the signal source is incident power-reflected power, i.e. the maximum power that the network can obtain from the signal source; correspondingly, the specific implementation process for calculating the total power dissipation of the two-stage load cascade according to the signal source parameter and the input reflection coefficient of the first-stage load may include: by passing through
P L1,L2 ＝P A (W)-(P A (dBm)+dB(S 11 ))(W)
Obtaining the total power P of the two-stage load cascade L1,L2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is A (W) is the power of the signal source, and the unit is W, P A (dBm) is the power of the signal source, and is expressed as dBm, S 11 And the reflection coefficient is input to the first-stage load. dB (S) 11 ) Is to input reflection coefficient of first stage loadS 11 The unit of (2) is converted into dBm, and then the dBm is calculated with the power of the signal source, the result obtained by calculation is converted into the power value of the unit W, and then the power value of the signal source of the unit W is calculated with the power of the signal source of the unit W to obtain the total power P of the two-stage load cascade connection L1,L2 。
Further, the specific implementation process of calculating the dissipated power of the second stage load according to the signal source parameter and the forward transmission coefficient of the first stage load may include: by passing through
P L2 ＝P A (dBm)+dB(S 21 )
Obtaining dissipated power P of the second stage load L2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is A (dBm) is the power of the signal source, and is expressed as dBm, S 21 And the forward transmission coefficient of the first stage load. dB (S) 21 ) Is to transmit the forward transmission coefficient S of the first stage load 21 Converted into dBm, and then calculated with the power of the signal source in dBm to obtain the dissipation power P of the second stage load L2 。
Further, the specific implementation procedure of calculating the dissipated power of the first stage load according to the dissipated total power and the dissipated power of the second stage load may include: by passing through
P L1 ＝P L1,L2 (W)-P L2 (W)
Obtaining dissipated power P of first stage load L1 The unit is W. Wherein P is L1,L2 The total power of the two-stage load cascade dissipation is expressed as W; p (P) L2 The dissipated power for the second stage load is in W.
The load adjusting method in the transmission network of the embodiment can calculate the power dissipation of the first-stage load and the second-stage load by only utilizing the S parameter and the signal source parameter of the first-stage load, is simple and accurate in calculation, fills up the gap of load adjustment in the transmission network of the load, further can adjust the power dissipation of different resistance films according to the resistance value of each load according to the dissipated power, solves the problem of uneven heating, and provides a basis for the thermal design of the power load.
In another embodiment, after acquiring the S parameter of the first-stage load and the signal source parameter of the transmission network where the first-stage load is located, the method may further include: and acquiring the input reflection coefficient of the second-stage load. The S parameter of the first stage load and the input reflection coefficient of the second stage load in this embodiment are both narrowly defined S parameters. Correspondingly, the specific implementation flow for respectively calculating the dissipation power of the first-stage load and the dissipation power of the second-stage load according to the signal source parameter and the S parameter of the first-stage load comprises the following steps:
and calculating the total power of dissipation of the two-stage load cascade connection and the power of dissipation of the second-stage load according to the signal source parameter, the S parameter of the first-stage load and the input reflection coefficient of the second-stage load.
The dissipated power of the first stage load is calculated from the total dissipated power and the dissipated power of the second stage load.
Optionally, the signal source parameters of this embodiment may include: the power of the source and the reflection coefficient of the source. Further, according to the signal source parameter, the S parameter of the first-stage load and the input reflection coefficient of the second-stage load, the specific implementation process for calculating the total power dissipated by the two-stage load cascade and the power dissipated by the second-stage load may include: and calculating the dissipation power of the second-stage load and the total dissipation power of the cascade connection of the two-stage loads according to the service power of the signal source, the reflection coefficient of the signal source, the S parameter of the first-stage load and the input reflection coefficient of the second-stage load.
Further, the specific implementation procedure of calculating the total power dissipated by the two-stage load cascade according to the power of the signal source, the reflection coefficient of the signal source, the S parameter of the first-stage load and the input reflection coefficient of the second-stage load can comprise the following steps of
Obtaining the total power P of the two-stage load cascade L1,L2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is A For the power of the signal source Γ S For the reflection coefficient of the signal source, S 11 For the input reflection coefficient of the first stage load, S 21 For the forward transmission coefficient of the first stage load, S 12 For the reverse transmission coefficient of the first stage load, S 22 For the output reflection coefficient of the first stage load,
for the input reflection coefficient of the second stage load Γ in Is the input reflection coefficient of the transmission network.
The specific implementation flow for calculating the dissipation power of the second-stage load according to the service power of the signal source, the reflection coefficient of the signal source, the S parameter of the first-stage load and the S parameter of the second-stage load comprises the following steps: by passing through
Obtaining dissipated power P of the second stage load L2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is A For the power of the signal source Γ S For the reflection coefficient of the signal source, S 11 Is the input reflection coefficient of the first stage load,
for the input reflection coefficient of the second stage load, S 21 For the forward transmission coefficient of the first stage load, S 12 For the reverse transmission coefficient of the first stage load, S 22 And (5) outputting a reflection coefficient for the first stage load.
Specifically, referring to fig. 4 and 5, the power load includes a resistive film 1 and a resistive film 2, [ S ] is a narrow S parameter of the resistive film 1 (first stage load), and [ S ] is a narrow S parameter of the resistive film 2 (second stage load). When the input power enters the load, a part of the power is reflected back to the signal source, and the rest of the power is dissipated by the resistor mode 1 and the resistor mode 2 respectively. By simplifying the signal flow, the dissipation power of the resistance mode 2 and the dissipation total power of the whole power load, namely the dissipation total power of the two-stage load cascade connection, can be obtained. Further, the dissipated power of the resistive film 1 is calculated according to the dissipated power of the resistive film 2 and the total power of the dissipation of the whole power load, specifically as follows: by:
obtaining dissipated power P of first stage load L1 The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is L1,L2 For the total power dissipated by the two-stage load cascade, P L2 For the dissipated power of the second stage load, P A Is the power of signal source S As the reflection coefficient of the signal source, Γ in For the input reflection coefficient of the transmission network, S11 is the input reflection coefficient of the first stage load,
for the input reflection coefficient of the second stage load, S21 is the forward transmission coefficient of the first stage load, S12 is the reverse transmission coefficient of the first stage load, and S22 is the output reflection coefficient of the first stage load
In practical application, load adjustment in a transmission network can be performed by using simulation software such as HFSS (High Frequency Structure Simulator, high-frequency structure simulation), etc., first, the narrow sense S parameters of 2 resistor films on a power load in the transmission network are extracted (the narrow sense S parameters will change along with the change of the network), and according to a signal flow chart of a cascade network, as shown in fig. 5, a functional relationship between the dissipation power of each resistor film and the incident power of a signal source is obtained, so as to calculate the dissipation power of each resistor film.
In another embodiment, as shown in fig. 6, the load adjustment method in the transmission network of the present embodiment may also be used in a transmission network having n resistor film cascades, where the dissipated power of each resistor film in the n resistor film cascades is calculated.
Firstly, regarding the resistive film 1 as a first-stage load, regarding the resistive films 2-n as a second-stage load, obtaining the S parameter of the first-stage load and the signal source parameter of the n-resistive-film cascade transmission network, calculating the dissipation power of the resistive films 2-n and the dissipation total power of the n-resistive-film cascade according to the signal source parameter and the S parameter of the first-stage load, and finally calculating the dissipation power of the resistive film 1 according to the dissipation total power of the n-resistive-film cascade and the dissipation power of the resistive films 2-n, wherein the specific calculation process can be referred to the description according to the above embodiment.
Further, the resistive film 2 is regarded as a first-stage load, and the resistive films 3 to n are regarded as second-stage loads as a whole; and taking the calculated dissipation power of the whole resistor film 2-resistor film n as the qualification power (signal source parameter) of the signal source, calculating the dissipation power of the whole resistor film 3-resistor film n and the total dissipation power of the cascade connection of the resistor film 2-resistor film n according to the qualification power of the signal source and the S parameter of the resistor film 2, and finally calculating the dissipation power of the resistor film 2 according to the dissipation power of the whole resistor film 3-resistor film n and the total dissipation power, and the dissipation power of each resistor film can be calculated successively by analogy.
Alternatively, regarding the resistive film 1 as a first-stage load, regarding the resistive films 2 to n as a second-stage load, obtaining an S parameter of the first-stage load, obtaining an input reflection coefficient of the second-stage load and a signal source parameter of a transmission network of n resistive film cascades, calculating the dissipation power of the resistive films 2 to n as well as the dissipation total power of the n resistive film cascades according to the signal source parameter, the input reflection coefficient of the second-stage load and the S parameter of the first-stage load, and finally calculating the dissipation power of the resistive film 1 according to the dissipation total power of the n resistive film cascades and the dissipation power of the resistive films 2 to n as described in the above embodiments.
Further, the resistive film 2 is regarded as a first-stage load, and the resistive films 3 to n are regarded as second-stage loads as a whole; and taking the calculated dissipation power of the whole resistor film 2-resistor film n as the qualification power (signal source parameter) of the signal source, calculating the dissipation power of the whole resistor film 3-resistor film n and the total dissipation power of the cascade connection of the resistor film 2-resistor film n according to the qualification power of the signal source, the input reflection coefficient of the second-stage load and the S parameter of the resistor film 2, and finally calculating the dissipation power of the resistor film 2 according to the dissipation power of the whole resistor film 3-resistor film n and the total dissipation power, and the like, so that the dissipation power of each resistor film can be calculated successively.
Optionally, adjusting the resistance value of the corresponding load according to the dissipated power of the first-stage load and the dissipated power of the second-stage load may specifically include: the method comprises the steps that when the dissipation power of a first-stage load is larger than a first preset highest dissipation power value, the resistance value of the first-stage load is reduced, and when the dissipation power of the first-stage load is smaller than a first preset lowest dissipation power value, the resistance value of the first-stage load is increased; or the resistance value of the second-stage load is reduced when the dissipation power of the second-stage load is larger than a second preset highest dissipation power value, and the resistance value of the second-stage load is increased when the dissipation power of the second-stage load is smaller than a second preset lowest dissipation power value, so that the power dissipation of different resistance films is regulated, and the problem of uneven heating is solved.
Or, adjusting the resistance of the first-stage load and the resistance of the second-stage load according to the reflected power of the transmission network, the dissipated power of the first-stage load and the dissipated power of the second-stage load. For example, the reflected power is overlarge, and then the resistance value of the first-stage load and the second-stage load can be increased, the power dissipation of different resistance films can be adjusted, and the problem of uneven heating is solved.
Correspondingly, the structural size of the first-stage load or the structural size of the second-stage load can be adjusted according to the dissipated power of the first-stage load and the dissipated power of the second-stage load.
Or adjusting the structural size of the first-stage load and the structural size of the second-stage load according to the reflected power of the transmission network, the dissipated power of the first-stage load and the dissipated power of the second-stage load.
According to the load adjusting method in the transmission network, the S parameter of the first-stage load and the signal source parameter of the transmission network where the first-stage load is located are obtained, the dissipation power of the first-stage load and the dissipation power of the second-stage load are calculated according to the signal source parameter and the S parameter of the first-stage load respectively, the dissipation power of each stage of load is obtained simply and accurately, and a basis is provided for thermal design of the power load; meanwhile, the resistance value of the corresponding load can be adjusted according to the dissipation power of the first-stage load and the dissipation power of the second-stage load, so that the problem of uneven heating is solved, and the reliability of the limiter is improved.
It will be understood by those skilled in the art that the sequence number of each step in the above embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.
Corresponding to the method for adjusting load in a transmission network described in the above embodiment, the present embodiment provides a load adjusting device in a transmission network, as shown in fig. 7, which is a schematic structural diagram of the device in the present embodiment. For convenience of explanation, only the portions related to the present embodiment are shown.
The device comprises: an S parameter acquisition module 110, a dissipated power calculation module 120, and a load regulation module 130.
The S parameter obtaining module 110 is configured to obtain an S parameter of a first-stage load and a signal source parameter of a transmission network where the first-stage load is located, where the transmission network further includes a second-stage load.
The dissipation power calculation module 120 is configured to calculate the dissipation power of the first stage load and the dissipation power of the second stage load according to the signal source parameter and the S parameter of the first stage load, respectively.
The load adjusting module 130 is configured to adjust a resistance value of a corresponding load according to the dissipated power of the first-stage load and the dissipated power of the second-stage load.
In the above device, the S parameter obtaining module 110 obtains the S parameter of the first-stage load and the signal source parameter of the transmission network where the first-stage load is located, and then the dissipation power calculating module 120 calculates the dissipation power of the first-stage load and the dissipation power of the second-stage load according to the signal source parameter and the S parameter of the first-stage load, so that the dissipation power of each stage of load is simply and accurately obtained, and a basis is provided for thermal design of the power load; the load adjusting module 130 adjusts the resistance value of the corresponding load according to the dissipation power of the first-stage load and the dissipation power of the second-stage load, thereby solving the problem of uneven heating and improving the reliability of the limiter.
The present embodiment also provides a schematic diagram of the terminal device 100. As shown in fig. 8, the terminal device 100 of this embodiment includes: a processor 140, a memory 150 and a computer program 151 stored in said memory 150 and executable on said processor 140, for example a program of a load regulation method in a transmission network. The processor 140, when executing the computer program 151, implements the steps in the embodiments of the load regulation method in a transport network described above, for example steps 101 to 103 shown in fig. 1. Alternatively, the processor 140, when executing the computer program 151, performs the functions of the modules/units in the above-described device embodiments, for example, the functions of the modules 110 to 130 shown in fig. 7.
Illustratively, the computer program 151 may be partitioned into one or more modules/units that are stored in the memory 150 and executed by the processor 140 to accomplish the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions for describing the execution of the computer program 151 in the terminal device 100. For example, the computer program 151 may be divided into an S-parameter acquisition module 110, a dissipated power calculation module 120 and a load regulation module 130, each of which functions in particular as follows:
the S parameter obtaining module 110 is configured to obtain an S parameter of a first-stage load and a signal source parameter of a transmission network where the first-stage load is located, where the transmission network further includes a second-stage load.
The dissipation power calculation module 120 is configured to calculate the dissipation power of the first stage load and the dissipation power of the second stage load according to the signal source parameter and the S parameter of the first stage load, respectively.
The load adjusting module 130 is configured to adjust a resistance value of a corresponding load according to the dissipated power of the first-stage load and the dissipated power of the second-stage load.
The terminal device 100 may be a computing device such as a computer, a notebook, or a cloud server. The terminal device 100 may include, but is not limited to, a processor 140, a memory 150. It will be appreciated by those skilled in the art that fig. 8 is merely an example of the terminal device 100 and does not constitute a limitation of the terminal device 100, and may include more or less components than illustrated, or may combine certain components, or different components, e.g., the terminal device 100 may further include an input-output device, a network access device, a bus, etc.
The processor 140 may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 150 may be an internal storage unit of the terminal device 100, such as a hard disk or a memory of the terminal device 100. The memory 150 may also be an external storage device of the terminal device 100, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) or the like, which are provided on the terminal device 100. Further, the memory 150 may also include both an internal storage unit and an external storage device of the terminal device 100. The memory 150 is used for storing the computer program and other programs and data required by the terminal device 100. The memory 150 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of each functional unit and model is illustrated, and in practical application, the above-described function allocation may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal device and method may be implemented in other manners. For example, the apparatus/terminal device embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical function division, and there may be additional divisions in actual implementation, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present invention may implement all or part of the flow of the method of the above embodiment, or may be implemented by a computer program to instruct related hardware, where the computer program may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the computer program may implement the steps of each of the method embodiments described above. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), an electrical carrier signal, a telecommunications signal, a software distribution medium, and so forth. It should be noted that the computer readable medium may include content that is subject to appropriate increases and decreases as required by jurisdictions in which such content is subject to legislation and patent practice, such as in certain jurisdictions in which such content is not included as electrical carrier signals and telecommunication signals.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (8)
1. A method of load regulation in a transmission network, comprising:
the method comprises the steps of obtaining S parameters of a first-stage load and signal source parameters of a transmission network where the first-stage load is located, wherein the transmission network further comprises a second-stage load;
respectively calculating the dissipation power of the first-stage load and the dissipation power of the second-stage load according to the signal source parameters and the S parameters of the first-stage load; comprising the following steps: calculating the total power of dissipation of a two-stage load cascade according to the signal source parameters and the input reflection coefficient of the first-stage load, and calculating the power of dissipation of the second-stage load according to the signal source parameters and the forward transmission coefficient of the first-stage load; calculating the dissipated power of the first stage load according to the dissipated total power and the dissipated power of the second stage load;
the signal source parameters comprise the power of the signal source; calculating the total power dissipated by the two-stage load cascade according to the signal source parameters and the input reflection coefficient of the first-stage load, wherein the method comprises the following steps:
through P L1,L2 ＝P A (W)-(P A (dBm)+dB(S 11 ) (W) obtaining the total dissipated power P of the two-stage load cascade L1,L2 ；
Wherein P is A (W) is the signalThe power of source is W, P A (dBm) is the power of the signal source, and is expressed as dBm, S 11 For the input reflection coefficient of the first stage load, dB (S 11 ) Is to input the reflection coefficient S of the first stage load 11 Is converted to dBm;
and regulating the resistance value of the corresponding load according to the dissipated power of the first-stage load and the dissipated power of the second-stage load.
2. The method of load regulation in a transmission network of claim 1, wherein calculating the dissipated power of the second stage load from the signal source parameter and the forward transmission coefficient of the first stage load comprises: by passing through
P L2 ＝P A (dBm)+dB(S 21 )
Obtaining dissipated power P of the second stage load L2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is A (dBm) is the power of the signal source, and is expressed as dBm, S 21 For the forward transmission coefficient of the first stage load, dB (S 21 ) Is to input the reflection coefficient S of the first stage load 21 Is converted to dBm.
3. The load adjustment method in a transmission network according to claim 1 or 2, characterized in that after obtaining the S parameter of the first stage load and the signal source parameter of the transmission network in which the first stage load is located, the method further comprises: acquiring an input reflection coefficient of the second-stage load;
correspondingly, respectively calculating the dissipation power of the first-stage load and the dissipation power of the second-stage load according to the signal source parameter and the S parameter of the first-stage load, and comprising the following steps:
calculating the total power of dissipation of the cascade connection of the two-stage loads and the power of dissipation of the second-stage load according to the signal source parameters, the S parameters of the first-stage load and the input reflection coefficient of the second-stage load;
and calculating the dissipated power of the first stage load according to the dissipated total power and the dissipated power of the second stage load.
4. A method of load regulation in a transmission network as claimed in claim 3, wherein the signal source parameters include: the power of the signal source and the reflection coefficient of the signal source;
correspondingly, according to the signal source parameter, the S parameter of the first-stage load and the input reflection coefficient of the second-stage load, calculating the total power dissipated by the cascade of the two-stage loads and the power dissipated by the second-stage load, wherein the method comprises the following steps:
and calculating the dissipation power of the second-stage load and the total dissipation power of the cascade connection of the two-stage loads according to the service power of the signal source, the reflection coefficient of the signal source, the S parameter of the first-stage load and the input reflection coefficient of the second-stage load.
5. The method of load regulation in a transmission network of claim 4 wherein calculating the total dissipated power of a two-stage load cascade from the power of the source, the reflection coefficient of the source, the S-parameter of the first stage load, and the input reflection coefficient of the second stage load comprises: by passing through
Obtaining the total power P of the two-stage load cascade L1,L2 The method comprises the steps of carrying out a first treatment on the surface of the Wherein P is A For the power of the signal source Γ S For the reflection coefficient of the signal source, S 11 For the input reflection coefficient of the first stage load, S 21 For the forward transmission coefficient of the first stage load, S 12 For the reverse transmission coefficient of the first stage load, S 22 For the output reflection coefficient of the first stage load,
for the input reflection coefficient of the second stage load Γ in Input for a transmission networkReflection coefficient.
6. A load regulation device in a transmission network, comprising:
the system comprises an S parameter acquisition module, a first-stage load acquisition module and a second-stage load acquisition module, wherein the S parameter acquisition module is used for acquiring an S parameter of the first-stage load and a signal source parameter of a transmission network where the first-stage load is located, and the transmission network also comprises the second-stage load;
the dissipation power calculation module is used for calculating the dissipation power of the first-stage load and the dissipation power of the second-stage load according to the signal source parameter and the S parameter of the first-stage load respectively; the dissipation power calculation module is used for calculating the total dissipation power of the two-stage load cascade according to the signal source parameters and the input reflection coefficient of the first-stage load, and calculating the dissipation power of the second-stage load according to the signal source parameters and the forward transmission coefficient of the first-stage load; calculating the dissipated power of the first stage load according to the dissipated total power and the dissipated power of the second stage load;
the signal source parameters comprise the power of the signal source; the dissipation power calculation module is used for passing P L1,L2 ＝P A (W)-(P A (dBm)+dB(S 11 ) (W) obtaining the total dissipated power P of the two-stage load cascade L1,L2 ；
Wherein P is A (W) is the power of the signal source, and the unit is W, P A (dBm) is the power of the signal source, and is expressed as dBm, S 11 For the input reflection coefficient of the first stage load, dB (S 11 ) Is to input the reflection coefficient S of the first stage load 11 Is converted to dBm;
and the load adjusting module is used for adjusting the resistance value of the corresponding load according to the dissipated power of the first-stage load and the dissipated power of the second-stage load.
7. Terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor, when executing the computer program, realizes the steps of the load regulation method in a transmission network according to any of claims 1 to 5.
8. A computer-readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the load regulation method in a transmission network according to any one of claims 1 to 5.
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