CN218998025U - Broadband high-dynamic automatic gain control circuit - Google Patents
Broadband high-dynamic automatic gain control circuit Download PDFInfo
- Publication number
- CN218998025U CN218998025U CN202222938173.0U CN202222938173U CN218998025U CN 218998025 U CN218998025 U CN 218998025U CN 202222938173 U CN202222938173 U CN 202222938173U CN 218998025 U CN218998025 U CN 218998025U
- Authority
- CN
- China
- Prior art keywords
- unit
- control unit
- voltage
- output end
- automatic gain
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Control Of Amplification And Gain Control (AREA)
Abstract
The utility model relates to a broadband high-dynamic automatic gain control circuit, which comprises an amplifying unit, a branching unit, a signal detection and control unit, a level control unit, a monitoring unit and a power supply unit, wherein the amplifying unit is connected with the branching unit; the corresponding input end of the amplifying unit is connected with the signal input port, and the corresponding output end of the amplifying unit is connected with the input end of the branching unit; the corresponding output end of the branching unit is connected with the signal detection and control unit; the output end of the signal detection and control unit is connected with the corresponding input end of the amplifying unit; the corresponding output end of the branching unit is connected with the input end of the level control unit; the input end of the level control unit is connected with the output end of the monitoring unit, and the output end of the level control unit is connected with the final output port; the power supply unit supplies power to the control circuit. The broadband high-dynamic automatic gain control and the frequency range of the utility model can be automatically adjusted according to actual use.
Description
Technical Field
The utility model relates to a high-dynamic high-output power automatic gain control circuit, belonging to the fields of microwave communication, radar systems and satellite communication.
Background
In satellite communication and radar systems, the current automatic gain control amplifier is limited in that the dynamic range is low, the adaptive frequency range is narrow, automatic gain control cannot be realized on the received signals with high dynamic range and the signals with different required frequency bands, and stable radio frequency signals are output.
Disclosure of Invention
The utility model solves the technical problem of providing a broadband high-dynamic automatic gain control and a frequency range which can be automatically adjusted according to actual use.
The technical scheme adopted by the utility model is as follows:
the broadband high-dynamic automatic gain control circuit is characterized by comprising an amplifying unit, a branching unit, a signal detection and control unit, a level control unit, a monitoring unit and a power supply unit;
the corresponding input end of the amplifying unit is connected with the signal input port, and the corresponding output end of the amplifying unit is connected with the input end of the branching unit; the corresponding output end of the branching unit is connected with the signal detection and control unit; the output end of the signal detection and control unit is connected with the corresponding input end of the amplifying unit; the corresponding output end of the branching unit is connected with the input end of the level control unit; the input end of the level control unit is connected with the output end of the monitoring unit, and the output end of the level control unit is connected with the final output port;
the power supply unit supplies power to the control circuit.
Preferably, the amplifying unit includes a first amplifier, a first voltage-controlled attenuator, a second amplifier, a second voltage-controlled attenuator, a third amplifier and a third voltage-controlled attenuator which are sequentially connected, and the voltage-controlled end is respectively connected with the first voltage-controlled attenuator, the second voltage-controlled attenuator and the third voltage-controlled attenuator.
Preferably, the branching unit is composed of a power divider.
Preferably, the signal detection and control unit comprises a detector and an operational amplifier; the signal output end of the branching unit is connected with the signal input end of the detector, the signal output end of the detector is connected with the input end of the operational amplifier, the output end of the operational amplifier regulates voltage output, and the threshold setting end is connected with the detector.
Preferably, the level control unit is composed of a numerical control attenuator and a peripheral circuit.
Preferably, the monitoring unit is composed of a single chip microcomputer.
Preferably, the power supply unit consists of a voltage regulator, a filter inductor and a filter capacitor; the external power supply entering module filters power supply ripples carried by the external power supply through the combination of the filter inductor 1, the filter capacitor 1 and the filter capacitor 2, so that the external power supply is ensured not to cause interference to the circuit; then converting the external direct current voltage into the direct current voltage required by the circuit through a voltage regulator; then, the direct-current voltage generated by the voltage regulator is subjected to ripple filtering through the combination of the filter inductor 2, the filter capacitor 3 and the filter capacitor 4, so that the voltage regulator is ensured not to cause interference to the circuit; the input port of the power supply unit is connected with external power supply of the module; the output port of the power supply unit is connected with the amplifying unit, the level control unit, the monitoring unit and the signal detection and control unit.
The utility model has the beneficial effects that:
the utility model is realized by cascading the three-level high-gain signal amplifier and the three-level large-dynamic voltage-controlled attenuator, when the external input signal is smaller, the voltage-controlled attenuator hardly attenuates, the gain of the amplifier is completely released, thereby obtaining high gain and ensuring that the input signal can be output to +5dBm when the input signal is-70 dBm. When the external input signal is higher, the attenuation value of the three-stage voltage-controlled attenuator is automatically adjusted by the detector to reach a larger attenuation value, so that lower gain is obtained, and the output to +5dBm can be ensured when the input signal level is +10dBm. The signal output level can be adjusted through the level control unit, so that different use requirements are met.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of an amplification unit of the present utility model;
FIG. 3 is a schematic diagram of a signal detection and control unit according to the present utility model;
fig. 4 is a schematic diagram of a power supply unit of the present utility model.
Detailed Description
As shown in figures 1-4, the broadband high-dynamic automatic gain control circuit consists of an amplifying unit, a branching unit, a signal detection and control unit, a level control unit, a monitoring unit and a power supply unit. The corresponding output end of the amplifying unit is connected with the input end of the branching unit; the corresponding output end of the branching unit is connected with the signal detection and control unit; the output end of the signal detection and control unit is connected with the corresponding input end of the amplifying unit; the corresponding output end of the branching unit is connected with the input end of the level control unit; the input end of the level control unit is connected with the monitoring unit, and the output end of the level control unit is connected with the final output port.
In a preferred embodiment, the amplifying unit is composed of a first amplifier, a first voltage-controlled attenuator, a second amplifier, a second voltage-controlled attenuator, a third amplifier and a third voltage-controlled attenuator;
in a preferred embodiment, the branching unit consists of a power divider; the signal detection and control unit consists of a detector and an operational amplifier;
in a preferred embodiment, the level control unit consists of a numerical control attenuator and a peripheral circuit;
in a preferred embodiment, the monitoring unit consists of a single-chip microcomputer;
in the preferred embodiment, the power supply unit consists of a voltage regulator, a filter inductor and a filter capacitor, and the external power supply entering module filters power supply ripples carried by the external power supply through the combination of the filter inductor 1 and the filter capacitor 2, so that the external power supply is ensured not to cause interference to the circuit; then converting the external direct current voltage into the direct current voltage required by the circuit through a voltage regulator; then, the direct-current voltage generated by the voltage regulator is subjected to ripple filtering through the combination of the filter inductor 2 and the filter capacitor 3 and the filter capacitor 4, so that the voltage regulator is ensured not to cause interference to the circuit; the input port of the power supply unit is connected with external power supply of the module; the output port of the power supply unit is connected with the amplifying unit, the level control unit, the monitoring unit and the signal detection and control unit.
In the example, the power range of the receivable signal is-70 dBm to +10dBm, and the frequency range is 700MHz to 1700MHz; the signal level of the circuit output is always stable output level of +5dBm within the range of-70 dBm to +10dBm input signal, the signal level of the stable output can be regulated by a level control unit according to the actual use requirement, and the regulated dynamic range is 30dB. The signal input is within the range of-70 dBm to +10dBm, the signal passes through the amplifying unit, the branching unit and the signal detecting and controlling unit, the threshold voltage of the signal detecting and controlling unit is set by setting the peripheral circuit of the detector, when the signal level is within the range of-70 dBm to +10dBm, the detector outputs a dynamic voltage value to the voltage-controlled end of the voltage-controlled attenuator of the amplifying unit until the signal level input to the detector reaches the threshold value, at the moment, the detector outputs a fixed voltage value to the voltage-controlled end of the voltage-controlled attenuator of the amplifying unit, so that the stable output level of the circuit is maintained, when the level of the externally received signal changes again, the balance is broken, the detector outputs a dynamic voltage to the voltage-controlled end of the voltage-controlled attenuator of the amplifying unit again until the signal level input to the detector reaches the threshold value, and a balance state is built again;
the utility model is realized by cascading the three-level high-gain signal amplifier and the three-level large-dynamic voltage-controlled attenuator, when the external input signal is smaller, the voltage-controlled attenuator hardly attenuates, the gain of the amplifier is completely released, thereby obtaining high gain and ensuring that the input signal can be output to +5dBm when the input signal is-70 dBm. When the external input signal is higher, the attenuation value of the three-stage voltage-controlled attenuator is automatically adjusted by the detector to reach a larger attenuation value, so that lower gain is obtained, and the output to +5dBm can be ensured when the input signal level is +10dBm. The signal output level can be adjusted through the level control unit, so that different use requirements are met.
Claims (7)
1. The broadband high-dynamic automatic gain control circuit is characterized by comprising an amplifying unit, a branching unit, a signal detection and control unit, a level control unit, a monitoring unit and a power supply unit;
the corresponding input end of the amplifying unit is connected with the signal input port, and the corresponding output end of the amplifying unit is connected with the input end of the branching unit; the corresponding output end of the branching unit is connected with the signal detection and control unit; the output end of the signal detection and control unit is connected with the corresponding input end of the amplifying unit; the corresponding output end of the branching unit is connected with the input end of the level control unit; the input end of the level control unit is connected with the output end of the monitoring unit, and the output end of the level control unit is connected with the final output port;
the power supply unit supplies power to the control circuit.
2. The broadband high dynamic automatic gain control circuit according to claim 1, wherein the amplifying unit comprises a first amplifier, a first voltage-controlled attenuator, a second amplifier, a second voltage-controlled attenuator, a third amplifier and a third voltage-controlled attenuator which are sequentially connected, and the voltage-controlled tuning terminal is respectively connected with the first voltage-controlled attenuator, the second voltage-controlled attenuator and the third voltage-controlled attenuator.
3. The broadband high dynamic automatic gain control circuit according to claim 1, wherein said branching unit is comprised of a power divider.
4. The broadband high dynamic automatic gain control circuit according to claim 1, wherein said signal detection and control unit comprises a detector and an operational amplifier; the signal output end of the branching unit is connected with the signal input end of the detector, the signal output end of the detector is connected with the input end of the operational amplifier, the output end of the operational amplifier regulates voltage output, and the threshold setting end is connected with the detector.
5. The broadband high dynamic automatic gain control circuit according to claim 1, wherein the level control unit is composed of a digitally controlled attenuator and a peripheral circuit.
6. The broadband high-dynamic automatic gain control circuit according to claim 1, wherein the monitoring unit is composed of a single chip microcomputer.
7. The broadband high dynamic automatic gain control circuit according to claim 1, wherein said power supply unit
The filter consists of a voltage regulator, a filter inductor and a filter capacitor; the input port of the power supply unit is connected with external power supply of the module;
the output port of the power supply unit is connected with the amplifying unit, the level control unit, the monitoring unit and the signal detection and control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222938173.0U CN218998025U (en) | 2022-11-04 | 2022-11-04 | Broadband high-dynamic automatic gain control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222938173.0U CN218998025U (en) | 2022-11-04 | 2022-11-04 | Broadband high-dynamic automatic gain control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218998025U true CN218998025U (en) | 2023-05-09 |
Family
ID=86193790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222938173.0U Active CN218998025U (en) | 2022-11-04 | 2022-11-04 | Broadband high-dynamic automatic gain control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218998025U (en) |
-
2022
- 2022-11-04 CN CN202222938173.0U patent/CN218998025U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4811422A (en) | Reduction of undesired harmonic components | |
| US6765439B2 (en) | Impedance matching for a power amplifier system | |
| US7639998B1 (en) | RF receiver utilizing dynamic power management | |
| CN102064841B (en) | Amplitude shift keying (ASK)/on-off keying (OOK) radio frequency (RF) receiving circuit | |
| CN104092471B (en) | A kind of high dynamically high-gain broadband receiver | |
| CN204046583U (en) | High dynamically high-gain broadband receiver | |
| CN102547931B (en) | Device and method for realizing energy saving of miniature repeater | |
| CN112564726B (en) | Receiver broadband large dynamic automatic gain control circuit | |
| CN214851148U (en) | S-band power amplification assembly | |
| JP2000286652A (en) | Controller | |
| KR100641186B1 (en) | Rf matching apparatus for mobile communication device | |
| CN210327549U (en) | Satellite-borne Ka frequency band direct detection radiometer receiver | |
| CN218998025U (en) | Broadband high-dynamic automatic gain control circuit | |
| CN109120289B (en) | Short-wave radio frequency front-end processing module and method | |
| JPH0449298B2 (en) | ||
| CN103051300B (en) | Gain-device switching-on/off adjusting method and device in automatic gain control system | |
| CN210629431U (en) | Output power amplifier | |
| CN216649672U (en) | 1.8GHz attenuation filtering and amplifying circuit | |
| CN218998078U (en) | Broadband high-output power noise source | |
| CN221202557U (en) | Radio frequency circuit and electronic equipment thereof | |
| KR20160036381A (en) | Automatic level compensating circuit with adjustable output change | |
| CN210111982U (en) | UHF frequency channel airborne receiving radio frequency circuit | |
| CN110289822A (en) | A kind of broadband Larger Dynamic auto-gain circuit | |
| KR100303309B1 (en) | Linearity improvement device of amplifier through current control in mobile communication terminal | |
| CN212627820U (en) | High-dynamic millimeter wave AGC module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |