CN116582144A - Power self-adaptive link distribution front-end receiving assembly - Google Patents
Power self-adaptive link distribution front-end receiving assembly Download PDFInfo
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- CN116582144A CN116582144A CN202310479315.8A CN202310479315A CN116582144A CN 116582144 A CN116582144 A CN 116582144A CN 202310479315 A CN202310479315 A CN 202310479315A CN 116582144 A CN116582144 A CN 116582144A
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- 238000012545 processing Methods 0.000 claims abstract description 43
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 230000003044 adaptive effect Effects 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000012937 correction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
- H03F3/195—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/213—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/24—Frequency-independent attenuators
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H17/00—Networks using digital techniques
- H03H17/02—Frequency selective networks
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
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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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- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
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- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
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Abstract
The invention provides a power adaptive link distribution front-end receiving component. The detector mainly comprises a front-end radio frequency circuit module, a detection signal operation circuit module, a radio frequency signal amplifying circuit module and an output power adjusting circuit module. The method comprises the steps of detecting signals of a radio frequency receiving front end by using a large dynamic detector to obtain a power-related level signal, amplifying the level signal by using an operational amplifier, automatically converting the control level of a single-pole three-throw switch in a rear-stage circuit according to reference levels set by radio frequency signals with different powers, selecting different rear-end signal processing links, completing the signal processing function of the front-end receiving assembly, and finally realizing the self-adaptive distribution of the receiving front end. The invention can realize self-adaptive link distribution according to the radio frequency input power, and has the advantages of self-adaptive realization, large dynamic range, high detection sensitivity and the like.
Description
Technical Field
The invention belongs to the technical field of microwave measurement, and particularly relates to a power self-adaptive link distribution front-end receiving assembly.
Background
The microwave front-end receiving component plays an extremely important role in the field of microwave detection, and has the advantages of low noise coefficient, large dynamic range, wide working frequency band and self-adaptive link distribution, which are several important directions of the development of the microwave front-end at present. The existing front-end receiving assembly usually adopts a single-path radio frequency link to receive signals, and does not have a link distribution function in a self-adaptive manner according to the power of the received radio frequency signals.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a power self-adaptive link distribution front-end receiving component. The detector mainly comprises a front-end radio frequency circuit module, a detection signal operation circuit module, a radio frequency signal amplifying circuit module and an output power adjusting circuit module. The method comprises the steps of detecting signals of a radio frequency receiving front end by using a large dynamic detector to obtain a power-related level signal, amplifying the level signal by using an operational amplifier, automatically converting the control level of a single-pole three-throw switch in a rear-stage circuit according to reference levels set by radio frequency signals with different powers, selecting different rear-end signal processing links, completing the signal processing function of the front-end receiving assembly, and finally realizing the self-adaptive distribution of the receiving front end. The invention can realize self-adaptive link distribution according to the radio frequency input power, and has the advantages of self-adaptive realization, large dynamic range, high detection sensitivity and the like.
A power adaptive link allocation front-end receive assembly, characterized by: the detector comprises a front-end radio frequency circuit module, a detection signal operation circuit module, a radio frequency signal amplifying circuit module and an output power adjusting circuit module;
the front-end radio frequency circuit module receives an input radio frequency signal, the input radio frequency signal sequentially passes through the filter, the limiter and the directional coupler and is divided into two paths, wherein one path of radio frequency signal passing through the direct end of the coupler is output to the 3 paths of radio frequency signal amplifying circuit module after passing through the numerical control attenuator, the low noise coefficient amplifier and the single-pole three-throw switch, and the other path of radio frequency signal passing through the coupling port of the coupler is output to the detection signal operation circuit module after passing through the amplifier and the attenuator;
the detection signal operation circuit module amplifies and attenuates the radio frequency signal passing through the coupling port of the directional coupler of the front-end radio frequency circuit module to adjust the power, and then passes through the large dynamic detector and the operational amplifier, and then passes through the first comparator and the second comparator respectively, and different control signals are obtained through comparison with two different reference voltages, so as to control the switching of the single-pole three-throw switch in the front-end radio frequency circuit module;
the 3-path radio frequency signal amplifying circuit module comprises a low-power signal processing circuit, a medium-power signal processing circuit and a high-power signal processing circuit, wherein the low-power signal processing circuit receives radio frequency signals with the processing power range of-100 dBm to-50 dBm, the medium-power signal processing circuit receives radio frequency signals with the processing power range of-50 dBm to-0 dBm, and the high-power signal processing circuit receives radio frequency signals with the processing power range of 0dBm to +20 dBm;
the output power adjusting circuit module is used for outputting three paths of signals output by the received radio frequency signal amplifying circuit module through a single-pole three-throw switch, selecting one path from the three paths of signals to output, and then realizing the function of linear gain amplification of low-power signals and saturated output of medium-power signals and high-power signals through the power equalizer and the attenuator.
Specifically, the low-power signal processing circuit is composed of a first amplifier (1), a second amplifier (2), a first numerical control attenuator (3), a second numerical control attenuator (4), a third amplifier (5), a fourth amplifier (6) and a third numerical control attenuator (7).
Specifically, the medium power signal processing circuit is composed of a first amplifier (8), a first numerical control attenuator (9), a second amplifier (10), a third amplifier (11), a fourth amplifier (12) and a second numerical control attenuator (13).
Specifically, the high-power signal processing circuit is composed of a first amplifier (14) and a first numerical control attenuator (15).
The beneficial effects of the invention are as follows: (1) The detection signal operation circuit module obtains level signals corresponding to different powers by using a large dynamic detector, performs signal amplification by using an operational amplifier, and then automatically switches a radio frequency receiving link according to different reference levels set by radio frequency signals with different powers, so that the self-adaptive distribution of the radio frequency link can be realized, and the good effect of the self-adaptive distribution link is realized; (2) After the radio frequency signal passes through the directional coupler, the large dynamic detector can be ensured to work in a linear amplification interval by adjusting the values of the amplifier and the attenuator, and meanwhile, the precision of power detection can be improved by adjusting the logarithmic slope of the operational amplifier, adjusting and controlling the logarithmic slope of the operational amplifier and adopting a voltage stabilizer combined with a voltage divider circuit of a multistage resistor; (3) The digital control attenuator in the front-end radio frequency circuit module can be used for adjusting the power of the radio frequency signal, the attenuator is used for reducing the power entering the first-stage low-noise amplifier, the total linear dynamic range of the input assembly is expanded while the attenuator is ensured to work in a linear working interval, the highest expansion dynamic range can reach 120dB, and the dynamic range is large; (4) Amplitude adjustment is carried out through a numerical control attenuator, an amplifier and a power equalizer of the 3-path radio frequency signal amplifying circuit module, and meanwhile matching among links is adjusted, so that excellent flatness index can be obtained; (5) The front-end radio frequency circuit module can meet the broadband performance requirement of the receiving front-end component through selection of the directional coupler, the amplifier and the detector in the front-end radio frequency circuit module and the detection operation circuit module, and has the effect of good broadband.
Drawings
Fig. 1 is a schematic diagram of a power adaptive link allocation front-end receive component of the present invention;
FIG. 2 is a schematic diagram of a front-end RF circuit module;
FIG. 3 is a schematic diagram of a detection signal operation circuit;
FIG. 4 is a schematic diagram of a low power signal processing circuit;
FIG. 5 is a schematic diagram of a medium power signal processing circuit;
FIG. 6 is a schematic diagram of a high power signal processing circuit;
fig. 7 is a schematic diagram of an output power adjustment circuit module.
Detailed Description
The invention will be further illustrated with reference to the following figures and examples, which include but are not limited to the following examples.
As shown in fig. 1, the invention provides a power adaptive link distribution front end receiving assembly, which mainly comprises a front end radio frequency circuit module, a detection signal operation circuit module, a radio frequency signal amplifying circuit module and an output power adjusting circuit module.
1. Front-end radio frequency circuit module
As shown in fig. 2, the front-end radio frequency circuit module receives an input radio frequency signal, and selects a radio frequency working bandwidth through a pre-filter. In order to ensure that the working broadband of the component is generally reversely arranged, a corresponding broadband filter can be selected according to the radio frequency bandwidth of a specific input signal to realize the operation.
Then, the limiter ensures that the power of the radio frequency input signal is smaller than a threshold value (the common limiting power is set to 15 dBm) to protect a rear-stage low-noise amplifier from being damaged caused by directly receiving a high-power signal, then the radio frequency signal is divided into two paths through a directional coupler, one path is the video signal passing through the direct end of the directional coupler, the dynamic expansion of the power is firstly carried out through a numerical control attenuator, the low noise coefficient is ensured while the radio frequency signal is amplified through a low-noise coefficient amplifier, and finally the signal is output to a 3-path radio frequency signal amplifying circuit module after passing through a single-pole three-throw switch; the other path of signals, namely radio frequency signals passing through the coupling end of the coupler, enter the detection signal operation circuit module.
2. Wave detection signal operation circuit module
As shown in FIG. 3, after receiving the RF signal through the coupling port of the directional coupler of the front end RF circuit module, the detection signal operation circuit module outputs the RF signal to the large dynamic detector of the detection signal operation circuit module after gain compensation through the amplifier and the attenuator, the large dynamic detector is in a linear working state by adjusting the value of the attenuator, so that the detection sensitivity is high, an output voltage is obtained after passing through the large dynamic detector, the voltage is related to the input power, then the voltage is amplified in a voltage range through an operational amplifier, for example, the gain slope of the detector is set to be 70mV/dB, then the signal is amplified through the operational amplifier, and then the first comparator and the reference level 1 are compared to obtain a control signal 1, the second comparator and the reference level 2 are compared to obtain a control signal 2, and the two groups of control signals are combined to form a certain control signal to control the switching of the single-pole three-throw switch in the front end RF circuit module. The reference voltage is set by detecting the output voltage of the power corresponding to the detector, and the reference level set in this embodiment corresponds to the detected output voltage corresponding to-50 dBm and 0dB, and then the voltage obtained by the voltage stabilizer is divided by the multi-stage resistor network to reach the corresponding value.
3. Radio frequency signal amplifying circuit module
The radio frequency signal amplifying circuit module comprises a low-power signal processing circuit, a medium-power signal processing circuit and a high-power signal processing circuit, and the signal amplifying and the numerical control processing are respectively carried out through cascade connection of a plurality of stages of amplifiers and numerical control attenuators. As shown in fig. 4, a specific implementation manner of the low-power signal processing circuit is as follows: the first amplifier 1, the second amplifier 2, the first numerical control attenuator 3, the second numerical control attenuator 4, the third amplifier 5, the fourth amplifier 6 and the third numerical control attenuator 7 are formed, so that signals with processing power ranging from-100 dBm to-50 dBm can be received, and the function of linearly amplifying low-power signals is realized.
As shown in fig. 5, a specific implementation manner of the medium power signal processing circuit is as follows: the device is composed of a first amplifier 8, a first numerical control attenuator 9, a second amplifier 10, a third amplifier 11, a fourth amplifier 12 and a second numerical control attenuator 13, so that signals with processing power ranging from-50 dBm to 0dBm can be received, and the function of saturated output of medium-power signals is realized.
As shown in fig. 6, a specific implementation of the high-power signal processing circuit is as follows: the first amplifier 14 and the first digitally controlled attenuator 15 are configured so that a signal having a processing power in the range of 0 to +20dBm can be received, thereby realizing a function of power-compressing a high-power signal.
4. Output power adjusting circuit module
As shown in fig. 7, the output power adjusting circuit module receives three signals (output signals of the small, medium and high power signal processing circuits) output by the radio frequency signal amplifying circuit module, selects one signal from the three signals through a single-pole three-throw switch, then performs power flatness correction according to an expected index through the power equalizer, and then performs amplitude correction through the attenuator to obtain radio frequency signals with different powers set according to requirements and outputs the radio frequency signals.
Claims (4)
1. A power adaptive link allocation front-end receive assembly, characterized by: the detector comprises a front-end radio frequency circuit module, a detection signal operation circuit module, a 3-path radio frequency signal amplifying circuit module and an output power adjusting circuit module;
the front-end radio frequency circuit module receives an input radio frequency signal, the input radio frequency signal sequentially passes through the filter, the limiter and the directional coupler and is divided into two paths, wherein one path of radio frequency signal passing through the direct end of the coupler is output to the 3 paths of radio frequency signal amplifying circuit module after passing through the numerical control attenuator, the low noise coefficient amplifier and the single-pole three-throw switch, and the other path of radio frequency signal passing through the coupling port of the coupler is output to the detection signal operation circuit module after passing through the amplifier and the attenuator;
the detection signal operation circuit module amplifies and attenuates the radio frequency signal passing through the coupling port of the directional coupler of the front-end radio frequency circuit module to adjust the power, and then passes through the large dynamic detector and the operational amplifier, and then passes through the first comparator and the second comparator respectively, and different control signals are obtained through comparison with two different reference voltages, so as to control the switching of the single-pole three-throw switch in the front-end radio frequency circuit module;
the 3-path radio frequency signal amplifying circuit module comprises a low-power signal processing circuit, a medium-power signal processing circuit and a high-power signal processing circuit, wherein the signal amplifying and the numerical control processing are respectively carried out through cascading of a plurality of stages of amplifiers and numerical control attenuators, the low-power signal processing circuit receives radio frequency signals with the processing power range of-100 dBm to-50 dBm, the medium-power signal processing circuit receives radio frequency signals with the processing power range of-50 dBm to 0dBm, and the high-power signal processing circuit receives radio frequency signals with the processing power range of 0dBm to +20 dBm;
the output power adjusting circuit module receives three paths of signals output by the radio frequency signal amplifying circuit module, one path of signals is selected to be output from the three paths of signals through a single-pole three-throw switch, and then the signals pass through the power equalizer and the attenuator, so that the function of linear gain amplification of low-power signals and saturated output of medium-power signals and high-power signals is finally realized.
2. The power adaptive link allocation front-end receive assembly according to claim 1, wherein: the low-power signal processing circuit is composed of a first amplifier (1), a second amplifier (2), a first numerical control attenuator (3), a second numerical control attenuator (4), a third amplifier (5), a fourth amplifier (6) and a third numerical control attenuator (7).
3. The power adaptive link allocation front-end receive assembly according to claim 1, wherein: the medium power signal processing circuit is composed of a first amplifier (8), a first numerical control attenuator (9), a second amplifier (10), a third amplifier (11), a fourth amplifier (12) and a second numerical control attenuator (13).
4. The power adaptive link allocation front-end receive assembly according to claim 1, wherein: the high-power signal processing circuit is composed of a first amplifier (14) and a first numerical control attenuator (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310479315.8A CN116582144A (en) | 2023-04-28 | 2023-04-28 | Power self-adaptive link distribution front-end receiving assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310479315.8A CN116582144A (en) | 2023-04-28 | 2023-04-28 | Power self-adaptive link distribution front-end receiving assembly |
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| CN116582144A true CN116582144A (en) | 2023-08-11 |
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| CN202310479315.8A Pending CN116582144A (en) | 2023-04-28 | 2023-04-28 | Power self-adaptive link distribution front-end receiving assembly |
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- 2023-04-28 CN CN202310479315.8A patent/CN116582144A/en active Pending
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