CN220234636U - Amplitude equalizer with slope selection function - Google Patents
Amplitude equalizer with slope selection function Download PDFInfo
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- CN220234636U CN220234636U CN202321586064.5U CN202321586064U CN220234636U CN 220234636 U CN220234636 U CN 220234636U CN 202321586064 U CN202321586064 U CN 202321586064U CN 220234636 U CN220234636 U CN 220234636U
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- equalizer
- amplifier
- amplitude
- throw switch
- slope
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Waveguide Connection Structure (AREA)
Abstract
The utility model discloses an amplitude equalizer with a slope selection function, which comprises a signal input end, a first amplifier, an attenuator, a second amplifier, a signal output end and a slope selection circuit, wherein the signal input end is connected with the first amplifier; the signal input end is connected with the input end of the second amplifier through the limiter, the first amplifier and the attenuator in sequence, and the output end of the second amplifier is connected with the signal output end through the slope selection circuit; the slope selection circuit comprises a first single-pole multi-throw switch, a second single-pole multi-throw switch and a plurality of equalizers; each equalizer comprises a microstrip main transmission line, a resistor and a resonance microstrip line branch. The utility model realizes the slope switching of the equalizer by selecting the equalizer to finish the amplitude equalization, and the circuit structure of the amplitude equalizer is simple and easy to realize.
Description
Technical Field
The present utility model relates to an amplitude equalizer, and more particularly, to an amplitude equalizer with a slope selection function.
Background
Due to the gradual development and change of electronic systems, the needs of the public for improving the bandwidth of the communication system are gradually increased, and broadband systems with cross-bands (such as S-C band, C-X band and the like) are more and more favored by users, so that a large number of MMIC broadband amplifiers with low cost and small size are also applied.
However, these amplifiers still have a relatively limited performance attribute, especially with a wider bandwidth, i.e. with a decreasing amplitude as the frequency increases, and a significant amplitude slope in the band. Meanwhile, in a microwave system, many microwave components such as lumped parameter elements, high-frequency connectors, transmission lines, attenuators and the like have the defects. Because of the different amplitude slopes of the devices, when a plurality of devices are integrated in the same system, the amplitude of the broadband system has a large in-band fluctuation problem, the system performance is seriously affected, and a typical broadband system amplitude curve is shown in fig. 1. To solve this problem, an amplitude equalizer is used to compensate for the amplitude attenuation caused by the frequency rise, but the technique can only solve the system amplitude of single slope variation in the band, and the effect is still poor for the multi-slope system amplitude with obvious fluctuation in the band.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide an amplitude equalizer with a slope selection function, the slope of the equalizer is switched by selecting the equalizer, the amplitude equalization is completed, and the circuit structure of the amplitude equalizer is simple and easy to realize.
The aim of the utility model is realized by the following technical scheme: an amplitude equalizer with a slope selection function comprises a signal input end, a first amplifier, an attenuator, a second amplifier, a signal output end and a slope selection circuit;
the signal input end is connected with the input end of the second amplifier through the limiter, the first amplifier and the attenuator in sequence, and the output end of the second amplifier is connected with the signal output end through the slope selection circuit;
the slope selection circuit comprises a first single-pole multi-throw switch, a second single-pole multi-throw switch and a plurality of equalizers; the movable ends of the first single-pole multi-throw switch are connected to the output end of the second amplifier, and the fixed ends of the first single-pole multi-throw switch are the same in number and in one-to-one correspondence with the equalizers; each fixed end of the first single-pole multi-throw switch is connected with the first end of the corresponding equalizer;
the movable ends of the second single-pole multi-throw switch are connected with the signal output ends, the fixed ends of the second single-pole multi-throw switch are the same as the equalizers in number and correspond to each other one by one, and each fixed end of the second single-pole multi-throw switch is connected with the second end of the corresponding equalizer.
Preferably, each equalizer includes a microstrip main transmission line, a resistor and a resonant microstrip line branch, wherein one end of the microstrip main transmission line is used as a first end of the equalizer, and the other end of the microstrip main transmission line is used as a second end of the equalizer; one end of the resistor is connected with the center of the microstrip main transmission line, the other end of the resistor is connected with the first end of the resonance microstrip line branch, and the second end of the resonance microstrip line branch is suspended.
Preferably, in the slope selection circuit, microstrip main transmission lines of the respective equalizers have the same impedance; the resistors in each equalizer have different resistance values, and the branches of the resonant microstrip lines in each equalizer have different impedances.
Each equalizer realizes different slopes through resistors with different resistance values and resonance microstrip line branches with different impedance, and is switched to different equalizers through a single-pole multi-throw switch to realize slope selection;
preferably, the amplitude equalizer further comprises a limiter arranged between the signal input and the first amplifier.
The beneficial effects of the utility model are as follows: the utility model realizes the slope switching of the equalizer by selecting the equalizer, completes the amplitude equalization, can realize the amplitude compensation when the amplitude fluctuation is large, and has simple circuit structure and easy realization.
Drawings
FIG. 1 is a graph of typical wideband system amplitude;
FIG. 2 is a schematic diagram of the present utility model;
FIG. 3 is a schematic diagram of amplitude curves of a wideband system in an embodiment;
fig. 4 is a schematic diagram of the slope of the equalizer 1 according to the embodiment;
fig. 5 is a schematic diagram of the slope of the equalizer 2 according to the embodiment;
fig. 6 is a schematic diagram of the slope of the equalizer 3 according to the embodiment;
fig. 7 is an amplitude curve of the wideband system after compensation in the embodiment.
Detailed Description
The technical solution of the present utility model will be described in further detail with reference to the accompanying drawings, but the scope of the present utility model is not limited to the following description.
As shown in fig. 1, an amplitude equalizer with a slope selection function includes a signal input terminal, a first amplifier, an attenuator, a second amplifier, a signal output terminal, and a slope selection circuit;
the signal input end is connected with the input end of the second amplifier through the limiter, the first amplifier and the attenuator in sequence, and the output end of the second amplifier is connected with the signal output end through the slope selection circuit;
the slope selection circuit comprises a first single-pole multi-throw switch, a second single-pole multi-throw switch and a plurality of equalizers; the movable ends of the first single-pole multi-throw switch are connected to the output end of the second amplifier, and the fixed ends of the first single-pole multi-throw switch are the same in number and in one-to-one correspondence with the equalizers; each fixed end of the first single-pole multi-throw switch is connected with the first end of the corresponding equalizer;
the movable ends of the second single-pole multi-throw switch are connected with the signal output ends, the fixed ends of the second single-pole multi-throw switch are the same as the equalizers in number and correspond to each other one by one, and each fixed end of the second single-pole multi-throw switch is connected with the second end of the corresponding equalizer.
In an embodiment of the present application, each equalizer includes a microstrip main transmission line, a resistor, and a resonant microstrip branch, where one end of the microstrip main transmission line is used as a first end of the equalizer, and the other end of the microstrip main transmission line is used as a second end of the equalizer; one end of the resistor is connected with the center of the microstrip main transmission line, the other end of the resistor is connected with the first end of the resonance microstrip line branch, and the second end of the resonance microstrip line branch is suspended (opened).
In the slope selection circuit, microstrip main transmission lines of all the equalizers have the same impedance; the resistors in each equalizer have different resistance values, and the branches of the resonant microstrip lines in each equalizer have different impedances.
Each equalizer realizes different slopes through resistors with different resistance values and resonance microstrip line branches with different impedance, and is switched to different equalizers through a single-pole multi-throw switch to realize slope selection;
the amplitude equalizer further comprises a limiter arranged between the signal input and the first amplifier.
In terms of the present, a wideband equalizer is generally used for amplitude compensation in a wideband system, but this technique has a good effect on the amplitude imbalance of a single slope, and has a limited effect on the compensation of a complex in-band amplitude system, so that the bandwidth with large amplitude fluctuation in the wideband system is divided into narrow bands with multiple slopes, and multiple equalizers are provided for the amplitude slopes of the narrow bands, so that each equalizer corresponds to a narrow band with one slope; in a broadband system, the single-pole multi-throw switch can be controlled to select a corresponding frequency band equalizer simultaneously when the frequency is changed due to the fact that the broadband system is in a narrow-band working state in actual use, so that accurate amplitude compensation is performed, and better system amplitude flatness is obtained.
As shown in FIG. 3 below, in the embodiment of the present application, the slope of the broadband system is-1 dB (26 dB-25 dB) at 2-4 GHz, -2dB (25 dB-23 dB) at 8-10 GHz, and-3 dB (23 dB-20 dB) at 18-20 GHz. The accurate compensation of different frequency band amplitudes is realized, and the method is specifically as follows:
a pair of single-pole three-throw switches are used for switching the equalizer 1, the equalizer 2 and the equalizer 3, and different slopes are realized by setting the impedance of the main transmission line, the resistance value of the resistor and the impedance of the resonance microstrip line branch; in the embodiment of the application, the slope of the balanced amplitude of the equalizer 1 in 2 GHz-4 GHz is set to be +1dB (-6.5 dB to-5.5 dB), as shown in FIG. 4, and the slope of the equalizer is used for compensating the amplitude of the equalizer 1 in 2-4 GHz; the slope of the equalizing amplitude of the equalizer 2 in 8 GHz-10 GHz is +2dB (-5.5 dB to-3.5 dB), as shown in FIG. 5, and the equalizer is used for compensating the slope of the system in 8-10 GHz to be-2 dB; the slope of the equalizing amplitude of the equalizer 3 within 18 GHz-20 GHz is +3dB (-3.5 dB to-0.5 dB), as shown in FIG. 6, and the equalizer is used for compensating the slope of the system within 18 GHz-20 GHz to be-3 dB. By the method, better amplitude flatness of different frequency bands in the system can be realized, and the compensated amplitude is shown in fig. 7.
It is to be noted that various corresponding changes and modifications can be made by those skilled in the art without departing from the spirit and the essence of the present utility model, and these corresponding changes and modifications should fall within the scope of the appended claims.
Claims (4)
1. An amplitude equalizer having a slope selection function, characterized by: the device comprises a signal input end, a first amplifier, an attenuator, a second amplifier, a signal output end and a slope selection circuit;
the signal input end is connected with the input end of the second amplifier through the limiter, the first amplifier and the attenuator in sequence, and the output end of the second amplifier is connected with the signal output end through the slope selection circuit;
the slope selection circuit comprises a first single-pole multi-throw switch, a second single-pole multi-throw switch and a plurality of equalizers; the movable ends of the first single-pole multi-throw switch are connected to the output end of the second amplifier, and the fixed ends of the first single-pole multi-throw switch are the same in number and in one-to-one correspondence with the equalizers; each fixed end of the first single-pole multi-throw switch is connected with the first end of the corresponding equalizer;
the movable ends of the second single-pole multi-throw switch are connected with the signal output ends, the fixed ends of the second single-pole multi-throw switch are the same as the equalizers in number and correspond to each other one by one, and each fixed end of the second single-pole multi-throw switch is connected with the second end of the corresponding equalizer.
2. An amplitude equalizer with slope selection function as claimed in claim 1, wherein: each equalizer comprises a microstrip main transmission line, a resistor and a resonance microstrip line branch knot, wherein one end of the microstrip main transmission line is used as a first end of the equalizer, and the other end of the microstrip main transmission line is used as a second end of the equalizer; one end of the resistor is connected with the center of the microstrip main transmission line, the other end of the resistor is connected with the first end of the resonance microstrip line branch, and the second end of the resonance microstrip line branch is suspended.
3. An amplitude equalizer with slope selection function as claimed in claim 1, wherein: in the slope selection circuit, microstrip main transmission lines of all the equalizers have the same impedance; the resistors in each equalizer have different resistance values, and the branches of the resonant microstrip lines in each equalizer have different impedances.
4. An amplitude equalizer with slope selection function as claimed in claim 1, wherein: the amplitude equalizer further comprises a limiter arranged between the signal input and the first amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321586064.5U CN220234636U (en) | 2023-06-20 | 2023-06-20 | Amplitude equalizer with slope selection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321586064.5U CN220234636U (en) | 2023-06-20 | 2023-06-20 | Amplitude equalizer with slope selection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220234636U true CN220234636U (en) | 2023-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321586064.5U Active CN220234636U (en) | 2023-06-20 | 2023-06-20 | Amplitude equalizer with slope selection function |
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| Country | Link |
|---|---|
| CN (1) | CN220234636U (en) |
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2023
- 2023-06-20 CN CN202321586064.5U patent/CN220234636U/en active Active
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