CN110855260A - 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 applicable to the technical field of microwaves and provides a load adjusting method and device in a transmission network and terminal equipment. 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 parameter and the S parameter of the first-stage load; and 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 invention can calculate the dissipation power of each power load, solves the problem of uneven heating of the load and provides a basis for the thermal design of the power load.
Description
Technical Field
The invention belongs to the technical field of microwaves, and particularly relates to a load adjusting method and device in a transmission network and terminal equipment.
Background
The power load is commonly used in a balanced amplitude limiter, the main purpose of the amplitude limiter is to protect a receiver from being burnt by a high-power signal, and simultaneously, the small insertion loss is presented to the incident power of a small signal, for example, when the high-power signal is input, the amplitude limiter is in an isolation state, the input signal is subjected to power division by a 3dB bridge and then meets the amplitude limiter to generate reflection, and then the input signal is synthesized and output by the 3dB bridge, wherein a part of the 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 amplitude limiter is reduced.
Disclosure of Invention
In view of this, embodiments of the present invention provide a method and an apparatus for adjusting a load in a transmission network, and a terminal device, so as to solve a problem that a power load in the prior art often generates uneven heat.
A first aspect of an embodiment of the present invention provides a method for adjusting a load 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 parameter and the S parameter of the first-stage load;
and 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.
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 dissipated power of the cascade of the two stages of loads according to the signal source parameters and the input reflection coefficient of the first stage of load, and calculating the dissipated power of the second stage of load according to the signal source parameters and the forward transmission coefficient of the first stage of load;
and calculating the dissipated power of the first-stage load according to the total dissipated power and the dissipated power of the second-stage load.
Optionally, the signal source parameter includes a qualification power of the signal source;
correspondingly, calculating the total power dissipated by the cascade of the two stages of loads according to the signal source parameter and the input reflection coefficient of the first stage of loads, and the method comprises the following steps: by passing
PL1,L2＝PA(W)-(PA(dBm)+dB(S11))(W)
Obtaining the total power P dissipated by two-stage load cascadeL1,L2(ii) a Wherein, PA(W) is the qualification power of the signal source, and the unit is W, PA(dBm) is the qualification power of the signal source, and the unit is dBm, S11Is the input reflection coefficient of 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
PL2＝PA(dBm)+dB(S21)
Obtaining the dissipation power P of the second stage loadL2(ii) a Wherein, PA(dBm) is the qualification power of the signal source, and the unit is dBm, S21Is the forward transmission coefficient of the first stage load.
Optionally, after obtaining 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, 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, including:
calculating the total dissipated power of the two-stage load cascade and the dissipated power 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;
and calculating the dissipated power of the first-stage load according to the total dissipated power and the dissipated power of the second-stage load.
Optionally, the signal source parameters include: the qualification power of the signal source and the reflection coefficient of the signal source;
correspondingly, calculating the total dissipated power of the two-stage load cascade and the dissipated power 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, including:
and calculating the dissipated power of the second-stage load and the total dissipated power of the cascade connection of the two stages of loads according to the qualification 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 power dissipated by the cascade of the two stages of loads according to the qualification 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, and including: by passing
Obtaining the total power P dissipated by two-stage load cascadeL1,L2(ii) a Wherein, PAResource power of said signal source, gammaSIs the reflection coefficient, S, of the signal source11Is the input reflection coefficient, S, of the first stage load21Is the forward transmission coefficient, S, of the first stage load12Is the reverse transmission coefficient, S, of the first stage load22Is the output reflection coefficient of the first stage load,
is the input reflection coefficient of the second stage load.
A second aspect of an embodiment of the present invention provides a load adjustment apparatus 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 a first-stage load and a signal source parameter of a transmission network where the first-stage load is located;
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;
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 the embodiments of the present invention provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the steps of the load adjustment method in the transport network according to any one of the first aspect of the embodiments.
A fourth aspect of embodiments of the present invention provides a computer-readable storage medium, which stores a computer program that, when executed by a processor, implements the steps of the method for load adjustment in a transport network according to any one of the first to fourth aspects of embodiments.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: 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, and 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 respectively, 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; 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 amplitude limiter is improved.
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In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flow chart of an implementation of a load adjustment method in a transport network according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a balanced slicer according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating an 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 loading signal of a signal source according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an n-level resistive film cascade provided by the embodiment of the invention;
fig. 7 is a schematic structural diagram of a load adjusting apparatus 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 particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the 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 explain the technical means of the present invention, the following description will be given by way of specific examples.
Referring to fig. 1, a schematic flow chart of an implementation of the method for adjusting load in a transmission network provided in this embodiment is described in detail as follows:
step S101, obtaining an S parameter of a first-stage load and a signal source parameter of a transmission network where the first-stage load is located, wherein the transmission network further comprises a second-stage load.
Referring to fig. 2, which is a schematic diagram of a balanced limiter, a power load is used in the balanced limiter. When a high-power signal is input, the internal amplitude limiter is in an isolation state, the input signal is subjected to power division by the 3dB bridge and then meets the amplitude limiter to generate reflection, the reflected signal is synthesized and output by the 3dB bridge and enters a power load, and the power of the reflected signal is dissipated by the power load. When the frequency of an incident signal is high, a resistive film on a power load often needs to be processed in a partitioning mode to improve an input standing wave of an incident port, and when the power of the input signal is high, the dissipation power of each power load cannot be calculated, and the selected power load often generates heat unevenly. The present embodiment provides a load adjustment method in a load transmission network, which may be used in a transmission network including at least two stages of load cascades, as shown in fig. 4, an S parameter of a first stage of load obtained in the present 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 parameter and the S parameter of the first-stage load.
And step S103, adjusting 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.
The embodiment realizes the load regulation in the transmission network of the power load in the high-power balanced amplitude limiter. In practical application, simulation software such as HFSS (High Frequency Structure Simulator) can be used to extract a narrow S parameter (the narrow S parameter changes with the change of the network) of the resistive film 1 (first-level load) in the transmission network, and ADS (automatic Device Specification) simulation software is used to convert the narrow S parameter of the resistive film 1 into a generalized S parameter and obtain a signal source parameter at the same time, and then, in combination with a signal flow chart of the cascade network, as shown in fig. 5, a functional relationship between the dissipated power of each resistive film and the incident power of the signal source is obtained, so as to calculate the dissipated power of each resistive film. The generalized S parameter is obtained by normalizing the narrow S parameter, and for example, the normalized impedance of the narrow S parameter of the present embodiment is 50 Ω, 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 fills the gap of load adjustment in the transmission network of the load, further adjusts power dissipation of different resistive films according to the dissipation power, solves the problem of uneven heating, provides a basis for thermal design of the power load, improves the power resistance and reliability of the load, and enables the power load to be applied to microwaves, radio frequencies and higher frequencies.
In an embodiment, referring to fig. 3, the specific implementation process 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 dissipated by the cascade of the two stages of loads according to the signal source parameter and the input reflection coefficient of the first stage load, and calculating the power dissipated by the second stage load according to the signal source parameter and the forward transmission coefficient of the first stage load.
Step S302, calculating the dissipation power of the first-stage load according to the total dissipation power and the dissipation power of the second-stage load.
First stageThe S parameter of the load comprises an input reflection coefficient S11Forward transmission coefficient S21Reverse transmission coefficient S12And the output reflection coefficient S22。
Optionally, the signal source parameter includes a resource power of the signal source, where the resource power is an incident power-reflected power, that is, a maximum power that the network can obtain from the signal source; correspondingly, the specific implementation process of calculating the total power dissipated by 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
PL1,L2＝PA(W)-(PA(dBm)+dB(S11))(W)
Obtaining the total power P dissipated by two-stage load cascadeL1,L2(ii) a Wherein, PA(W) is the qualification power of the signal source, and the unit is W, PA(dBm) is the qualification power of the signal source, and the unit is dBm, S11Is the input reflection coefficient of the first stage load. dB (S)11) Is to measure the input reflection coefficient S of the first stage load11The unit of (1) is converted into dBm, then the calculation is carried out with the qualification power of the signal source with the unit of dBm, the calculated result is converted into the power value with the unit of W, and then the calculation is carried out with the qualification power of the signal source with the unit of W to obtain the total power P of the two-stage load cascadeL1,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
PL2＝PA(dBm)+dB(S21)
Obtaining the dissipation power P of the second stage loadL2(ii) a Wherein, PA(dBm) is the qualification power of the signal source, and the unit is dBm, S21Is the forward transmission coefficient of the first stage load. dB (S)21) Is to make the forward transmission coefficient S of the first stage load21The unit of the power factor is converted into dBm, and the dBm and the resource power of the signal source are calculated to obtain the dissipation power P of the second-stage loadL2。
Further, the specific implementation process of calculating the dissipated power of the first-stage load according to the total dissipated power and the dissipated power of the second-stage load may include: by passing
PL1＝PL1,L2(W)-PL2(W)
Obtaining the dissipation power P of the first stage loadL1The unit is W. Wherein, PL1,L2The total power dissipation of the two-stage load cascade connection is W; pL2Is the dissipated power of the second stage load in units of 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 only by using the S parameter and the signal source parameter of the first-stage load, the calculation is simple and accurate, the gap of load adjustment in the transmission network of the load is filled, the resistance values of the loads can be further adjusted according to the dissipated power, the power dissipation of different resistive films is adjusted, the problem of uneven heating is solved, and a basis is provided for the thermal design of the power loads.
In another embodiment, after obtaining 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 S parameters in a narrow sense. Correspondingly, the specific implementation process of 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 includes:
and calculating the total dissipated power of the two-stage load cascade and the dissipated power 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.
And calculating the dissipated power of the first-stage load according to 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 signal source and the reflection coefficient of the signal source. Further, the specific implementation process of calculating the total dissipated power of the two-stage load cascade and the dissipated power 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 may include: and calculating the dissipated power of the second-stage load and the total dissipated power of the cascade connection of the two stages of loads according to the qualification 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 process of calculating the total power dissipated by the cascade connection of the two stages of loads according to the qualification 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 may include calculating the total power dissipated by the cascade connection of the two stages of loads by using the qualification power of the signal source, the reflection coefficient of the signal source, the S parameter of the first stage
Obtaining the total power P dissipated by two-stage load cascadeL1,L2(ii) a Wherein, PAResource power of said signal source, gammaSIs the reflection coefficient, S, of the signal source11Is the input reflection coefficient, S, of the first stage load21Is the forward transmission coefficient, S, of the first stage load12Is the reverse transmission coefficient, S, of the first stage load22Is the output reflection coefficient of the first stage load,
is the input reflection coefficient, Γ, of the second stage loadinIs the input reflection coefficient of the transmission network.
The specific implementation process of calculating the dissipated power of the second-stage load according to the qualification 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
Obtaining the dissipated power of the second stage loadPL2(ii) a Wherein, PAResource power of said signal source, gammaSIs the reflection coefficient, S, of the signal source11Is the input reflection coefficient of the first stage load,
is the input reflection coefficient, S, of the second stage load21Is the forward transmission coefficient, S, of the first stage load12Is the reverse transmission coefficient, S, of the first stage load22Is the output reflection coefficient of the first stage load.
Specifically, referring to fig. 4 and 5, the power load includes the resistive film 1 and the 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 input power enters a load, a part of power is reflected back to a signal source, and the rest of power is dissipated by the resistance modes 1 and 2 respectively. By simplifying the signal flow, the dissipation power of the resistive mode 2 and the dissipation total power of the whole power load, that is, the dissipation total power of the two-stage load cascade can be obtained. Further, the dissipation power of the resistive film 1 is calculated according to the dissipation power of the resistive film 2 and the total dissipation power of the whole power load, specifically as follows: by:
obtaining the dissipation power P of the first stage loadL1(ii) a Wherein, PL1,L2Total power dissipated, P, for a two-stage load cascadeL2Is the dissipated power of the second stage load, PAResource power for signal sources, gammaSIs the reflection coefficient, Γ, of the signal sourceinWhich is 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, S22 is the first stage loadOutput reflection coefficient of
In practical applications, load adjustment in the transmission network can be performed by using simulation software such as HFSS (High Frequency Structure Simulator), first extracting a narrow S parameter of 2 resistive films on a power load in the transmission network (the narrow S parameter changes with changes in the network), and obtaining a functional relationship between the dissipated power of each resistive film and the incident power of a signal source according to a signal flow chart of the cascade network, as shown in fig. 5, so as to calculate the dissipated power of each resistive film.
In another embodiment, as shown in fig. 6, the load adjustment method in the transmission network of the present embodiment can also be used in a transmission network having n resistive film cascades, and the dissipated power of each resistive film in the transmission network having n resistive film cascades is calculated.
Firstly, regarding the resistive film 1 as a first-stage load, regarding the resistive film 2 to the resistive film n as a second-stage load, obtaining an S parameter of the first-stage load and a signal source parameter of a transmission network in which n resistive films are cascaded, calculating the total dissipation power of the resistive film 2 to the resistive film n and the total dissipation power of the n resistive film cascades 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 total dissipation power of the n resistive film cascades and the total dissipation power of the resistive film 2 to the resistive film n, wherein the specific calculation process can refer 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 a second-stage load as a whole; the calculated dissipation power of the whole resistive film 2-resistive film n is regarded as the qualification power (signal source parameter) of a signal source, the dissipation power of the whole resistive film 3-resistive film n and the total dissipation power of the cascade of the resistive films 2-resistive film n are calculated according to the qualification power of the signal source and the S parameter of the resistive film 2, finally the dissipation power of the resistive film 2 is calculated according to the dissipation power and the total dissipation power of the whole resistive film 3-resistive film n, and by analogy, the dissipation power of each resistive film can be calculated successively.
Or, regarding the resistive film 1 as a first-stage load, regarding the entire resistive film 2 to the resistive film 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 in which the n resistive films are cascaded, calculating the dissipation power of the entire resistive film 2 to the resistive film n and 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 entire resistive film 2 to the resistive film n, where the specific calculation process may refer to the description according.
Further, the resistive film 2 is regarded as a first-stage load, and the resistive films 3 to n are regarded as a second-stage load as a whole; the calculated dissipation power of the whole resistive film 2-resistive film n is regarded as the qualification power (signal source parameter) of a signal source, the dissipation power of the whole resistive film 3-resistive film n and the dissipation total power of the cascade of the resistive films 2-resistive film n are calculated according to the qualification power of the signal source, the input reflection coefficient of the second-stage load and the S parameter of the resistive film 2, finally the dissipation power of the resistive film 2 is calculated according to the dissipation power and the dissipation total power of the whole resistive film 3-resistive film n, and by analogy, the dissipation power of each resistive 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: when the dissipation power of the 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 when the dissipation power of the second-stage load is larger than a second preset highest dissipation power value, the resistance value of the second-stage load is reduced, and when the dissipation power of the second-stage load is smaller than the second preset lowest dissipation power value, the resistance value of the second-stage load is increased, so that the power dissipation of different resistive films is adjusted, and the problem of uneven heating is solved.
Or adjusting the resistance value of the first-stage load and the resistance value 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, if the reflected power is too large, the resistances of the first-stage load and the second-stage load can be increased, the power dissipation of different resistive films can be adjusted, and the problem of uneven heating can be solved.
Correspondingly, the present embodiment may further adjust the structural size of the first-stage load or the structural size of the second-stage load according to the dissipated power of the first-stage load and the dissipated power of the second-stage load.
Or the structural size of the first-stage load and the structural size of the second-stage load are adjusted 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 respectively calculated according to the signal source parameter and the S parameter of the first-stage load, the dissipation power of each-stage load is simply and accurately obtained, 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 amplitude limiter is improved.
It should be understood by those skilled in the art that the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
Corresponding to the method for adjusting the load in the transmission network described in the above embodiments, this embodiment provides a load adjusting apparatus in the transmission network, and as shown in fig. 7, it is a schematic structural diagram of the apparatus in this 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 dissipated power calculating module 120 is configured to calculate 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.
The load adjusting module 130 is configured to adjust 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.
In the device, the S parameter obtaining module 110 obtains the S parameter of the first-stage load to obtain 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, so that the problem of uneven heating is solved, and the reliability of the amplitude limiter is improved.
The 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, such as 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 above described embodiments of the load adjustment method in the transport network, such as the steps 101 to 103 shown in fig. 1. Alternatively, the processor 140, when executing the computer program 151, implements the functions of each module/unit 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 implement the present invention. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program 151 in the terminal device 100. For example, the computer program 151 may be divided into the S parameter obtaining module 110, the dissipated power calculating module 120 and the load adjusting module 130, and the specific functions of each module are 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 dissipated power calculating module 120 is configured to calculate 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.
The load adjusting module 130 is configured to adjust 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 terminal device 100 may be a computer, a notebook, a cloud server, or other computing devices. The terminal device 100 may include, but is not limited to, a processor 140, a memory 150. Those skilled in the art will appreciate that fig. 8 is only an example of the terminal device 100, and does not constitute a limitation to the terminal device 100, and may include more or less components than those shown, or combine some components, or different components, for example, 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 (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage 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), and 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 to store 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 clear to those skilled in the art that, for convenience and simplicity of description, the foregoing functional units and models are merely illustrated as being divided, and in practical applications, the foregoing functional allocations may be performed by different functional units and modules as needed, that is, the internal structure of the device may be divided into different functional units or modules to perform all or part of the above described functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of 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 processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
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 implementation. 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 ways. For example, the above-described embodiments of the apparatus/terminal device are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method embodiments may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A method of load regulation in a transport 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 parameter and the S parameter of the first-stage load;
and 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.
2. The method of claim 1, wherein 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 comprises:
calculating the total dissipated power of the cascade of the two stages of loads according to the signal source parameters and the input reflection coefficient of the first stage of load, and calculating the dissipated power of the second stage of load according to the signal source parameters and the forward transmission coefficient of the first stage of load;
and calculating the dissipated power of the first-stage load according to the total dissipated power and the dissipated power of the second-stage load.
3. A method of load regulation in a transmission network according to claim 2, characterized in that the signal source parameter comprises the power dedicated to the signal source;
correspondingly, calculating the total power dissipated by the cascade of the two stages of loads according to the signal source parameter and the input reflection coefficient of the first stage of loads, and the method comprises the following steps: by passing
PL1,L2＝PA(W)-(PA(dBm)+dB(S11))(W)
Obtaining the total power P dissipated by two-stage load cascadeL1,L2(ii) a Wherein, PA(W) is the qualification power of the signal source, and the unit is W, PA(dBm) is the qualification power of the signal source, and the unit is dBm, S11Is the input reflection coefficient of the first stage load.
4. The method of claim 3, wherein 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 comprises: by passing
PL2＝PA(dBm)+dB(S21)
Obtaining the dissipation power P of the second stage loadL2(ii) a Wherein, PA(dBm) is the qualification power of the signal source, and the unit is dBm, S21Is the forward transmission coefficient of the first stage load.
5. The method of any of claims 1 to 4, wherein after obtaining 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 comprises: acquiring an input reflection coefficient of the second-stage load;
correspondingly, 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, including:
calculating the total dissipated power of the two-stage load cascade and the dissipated power 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;
and calculating the dissipated power of the first-stage load according to the total dissipated power and the dissipated power of the second-stage load.
6. Method for load regulation in a transmission network according to claim 5, characterized in that the signal source parameters comprise: the qualification power of the signal source and the reflection coefficient of the signal source;
correspondingly, calculating the total dissipated power of the two-stage load cascade and the dissipated power 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, including:
and calculating the dissipated power of the second-stage load and the total dissipated power of the cascade connection of the two stages of loads according to the qualification 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.
7. The method of claim 6, wherein calculating the total power dissipated by the cascade of two stages of loads according to the power contributed by 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 comprises: by passing
Obtaining the total power P dissipated by two-stage load cascadeL1,L2(ii) a Wherein, PAResource power of said signal source, gammaSIs the reflection coefficient, S, of the signal source11Is the input reflection coefficient, S, of the first stage load21Is the forward transmission coefficient, S, of the first stage load12Is the reverse transmission coefficient, S, of the first stage load22Is the output reflection coefficient of the first stage load,
is the input reflection coefficient of the second stage load.
8. 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 a first-stage load and a signal source parameter of a transmission network where the first-stage load is located;
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;
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.
9. A 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, carries out the steps of the method of load adjustment in a transmission network according to any one of claims 1 to 7.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method for load adjustment in a transmission network according to any one of claims 1 to 7.
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