CN111884601A - Broadband precise temperature-adjustable complementary amplifier and broadband precise temperature compensation method - Google Patents
Broadband precise temperature-adjustable complementary amplifier and broadband precise temperature compensation method Download PDFInfo
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- CN111884601A CN111884601A CN202010775676.3A CN202010775676A CN111884601A CN 111884601 A CN111884601 A CN 111884601A CN 202010775676 A CN202010775676 A CN 202010775676A CN 111884601 A CN111884601 A CN 111884601A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
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Abstract
The invention relates to the technical field of beacon machines, in particular to a broadband precise temperature-adjustable compensation amplifier and a broadband precise temperature compensation method, wherein an MCU temperature compensation input port is connected with a T-DET output port, the MCU temperature compensation output port is connected with a D-ATT 5bit IO port and an A-ATT DA port, an MCU microwave output port is connected with a D-ATT microwave input port, a D-ATT microwave output port is connected with an A-ATT microwave input port, an A-ATT microwave output port is connected with an ADP-2 microwave input port, an ADP-2 detection output port is communicated with an RF-DET microwave input port, and an RF-DET direct current output port is communicated with an AD input port of an MCU. The amplifier and the method provided by the invention can realize temperature compensation of the amplitude of the radio frequency channel, the precision of the amplitude of the radio frequency channel is adjustable, and the amplification and attenuation functions can be adjusted at will.
Description
Technical Field
The invention relates to the technical field of beacon machines, in particular to a broadband precise temperature-adjustable supplementary amplifier and a broadband precise temperature compensation method.
Background
There are temperature compensation amplifiers on the market, digital or analog voltage controlled AGC (automatic gain compensation amplifier), but there is no precision amplifier that combines a digital and analog voltage controlled attenuator to realize 0.1DB stepping, and there is no precision amplifier that satisfies both temperature compensation and AGC automatic gain control.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a broadband precise temperature-adjustable compensation amplifier and a broadband precise temperature compensation method, wherein the broadband precise temperature-adjustable compensation amplifier can realize temperature compensation of the amplitude of a radio frequency channel, can precisely adjust the amplitude of the radio frequency channel, and can randomly adjust the amplification and attenuation functions.
The invention is realized by the following technical scheme:
a broadband precise temperature-adjustable supplementary amplifier, which comprises an MCU, a D-ATT and an A-ATT, the temperature compensation input port of the MCU is connected with the output port of the T-DET, the temperature compensation output port of the MCU is respectively connected with a 5-bit IO port of the D-ATT and a DA port of the A-ATT, the microwave output port of the MCU is connected with the microwave input port of the D-ATT, the microwave output port of the D-ATT is connected with the microwave input port of the A-ATT through AMP1, the microwave output port of the A-ATT is connected with the microwave input port of the ADP-2 through AMP2, the ADP-2 is provided with a microwave output port and a detection output port, the output port of the ADP-2 is communicated with the microwave input port of the RF-DET, and the direct current output port of the RF-DET is communicated with the AD detection input port of the MCU.
The broadband precise temperature compensation method comprises the following steps:
firstly, initializing and setting an MCU (micro control unit), and electrifying the MCU to enable values of D-ATT and A-ATT to be in a default state;
secondly, the MCU reads the value of the T-DET, and automatically sets the state values of the D-ATT and the A-ATT according to the truth table of the relation between the current temperature and the attenuation value and the temperature stored in the MCU to realize temperature compensation;
thirdly, microwave signals output by the MCU enter the power divider after passing through the D-ATT numerical control attenuator, the AMP1 amplifier, the A-ATT analog voltage control attenuator and the AMP2 amplifier;
step four, the MCU compares the received direct current voltage signal value with the threshold voltage set by the upper computer, and rapidly adjusts the attenuation values of the D-ATT and the A-ATT so as to enable the detection voltage to be equal to the threshold voltage, and finally, the AGC function is realized;
and fourthly, the MCU realizes the AGC automatic gain control function according to the received direct current voltage signal value and an output threshold set by the upper computer.
Furthermore, the MCU can also set amplification amplitude or attenuation amplitude at will for instructions sent by the upper computer, so that the amplification and attenuation functions of the equipment are realized.
Further, D-ATT is a 5Bit digital attenuator, step 1DB and adjustable range 31 DB.
Further, A-ATT is an analog voltage-controlled attenuator, the step is 0.1DB, and the adjustable range is 10 DB.
Advantageous effects of the invention
The broadband precise temperature-adjustable supplementary amplifier and the broadband precise temperature compensation method have the following advantages:
1. the precise adjustment of the amplitude of the radio frequency channel is realized (step 0.1DB, adjustable range 30 DB).
2. Temperature compensation of the amplitude of the radio frequency channel is realized, and the amplitude of an output signal is kept stable and unchanged when the temperature is between 40 ℃ below zero and 85 ℃.
3. The function of arbitrary adjustable amplification and attenuation of input signals is realized.
4. An AGC function is implemented (automatic gain compensation causes the signal amplitude output to be a desired constant value).
Drawings
FIG. 1 is a schematic diagram of the operation of the present invention;
FIG. 2 is a flow chart of the present invention;
Detailed Description
A broadband precise temperature-adjustable supplementary amplifier, which comprises an MCU, a D-ATT and an A-ATT, the temperature compensation input port of the MCU is connected with the output port of the T-DET, the temperature compensation output port of the MCU is respectively connected with a 5-bit IO port of the D-ATT and a DA port of the A-ATT, the microwave output port of the MCU is connected with the microwave input port of the D-ATT, the microwave output port of the D-ATT is connected with the microwave input port of the A-ATT through AMP1, the microwave output port of the A-ATT is connected with the microwave input port of the ADP-2 through AMP2, the ADP-2 is provided with a microwave output port and a detection output port, the output port of the ADP-2 is communicated with the microwave input port of the RF-DET, and the direct current output port of the RF-DET is communicated with the AD detection input port of the MCU.
The broadband precise temperature compensation method comprises the following steps:
firstly, initializing and setting an MCU (micro control unit), and electrifying the MCU to enable values of D-ATT and A-ATT to be in a default state;
secondly, the MCU reads the value of the T-DET, and automatically sets the state values of the D-ATT and the A-ATT according to the truth table of the relation between the current temperature and the attenuation value and the temperature stored in the MCU to realize temperature compensation;
thirdly, microwave signals output by the MCU enter the power divider after passing through the D-ATT numerical control attenuator, the AMP1 amplifier, the A-ATT analog voltage control attenuator and the AMP2 amplifier;
fourthly, dividing the microwave signal after attenuation and compensation into two paths after entering a power divider, outputting one path, and entering the other path into an RF-DET for detection to change into a direct-current voltage signal and enter an MCU (microprogrammed control Unit);
and fourthly, the MCU compares the received direct current voltage signal value with the threshold voltage set by the upper computer, and rapidly adjusts the attenuation values of the D-ATT and the A-ATT to enable the detection voltage to be equal to the threshold voltage, even if the amplitude of the output microwave signal is kept at a fixed amplitude, the AGC automatic gain control function is finally realized.
Furthermore, the MCU can also set amplification amplitude or attenuation amplitude at will for instructions sent by the upper computer, so that the amplification and attenuation functions of the equipment are realized.
Further, D-ATT is a 5Bit digital attenuator, step 1DB and adjustable range 31 DB.
Further, A-ATT is an analog voltage-controlled attenuator, the step is 0.1DB, and the adjustable range is 10 DB.
The invention protects a broadband precise temperature-adjustable amplifier and a broadband precise temperature compensation method.A MCU (microprogrammed control unit) performs initialization setting after being electrified to enable values of D-ATT and A-ATT to be in a default state and to be continuously adjustable, and a DA (digital-to-analog) port of the MCU controls a voltage control pin of an attenuator to realize a value of 0.1DB step and a value of 10DB adjustable range.
The MCU reads the value of the T-DET (temperature detection chip), and automatically sets the state values of the D-ATT and the A-ATT according to the truth table of the relation between the current temperature and the attenuation value and the temperature of the A-ATT attenuator stored in the MCU, thereby realizing the temperature compensation function.
Microwave signals of 0.5-3 GHZ pass through a D-ATT numerical control attenuator, an AMP1 amplifier (gain 20DB), an A-ATT analog voltage control attenuator, an AMP2 amplifier (gain 20DB), then are output by one path of a power divider, the other path of the AMP2 amplifier enters an RF-DET (radio frequency signal detector) for detection, output direct current voltage signals enter an MCU (micro control unit), and the MCU realizes the AGC automatic gain control function according to the values and an output threshold set by an upper computer.
The MCU can also optionally set the amplification amplitude or the attenuation amplitude for the instruction sent by the upper computer, so as to realize the amplification and attenuation functions of the equipment. A DA port of the MCU outputs precise voltage to control the A-ATT attenuator, and the 0.1DB stepping precise attenuation function is realized, so that the qualitative tracking of the beacon signal is realized, and the automatic switching of the tracking bandwidth is realized.
In summary, the wideband precise temperature-adjustable complementary amplifier and the wideband precise temperature compensation method protected by the invention can realize temperature compensation of the amplitude of the radio frequency channel, can precisely adjust the amplitude of the radio frequency channel, and can arbitrarily adjust the amplification and attenuation functions.
Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The wide-band precise temperature-adjustable supplementary amplifier is characterized by comprising an MCU, a D-ATT and an A-ATT, the temperature compensation input port of the MCU is connected with the output port of the T-DET, the temperature compensation output port of the MCU is respectively connected with a 5-bit IO port of the D-ATT and a DA port of the A-ATT, the microwave output port of the MCU is connected with the microwave input port of the D-ATT, the microwave output port of the D-ATT is connected with the microwave input port of the A-ATT through AMP1, the microwave output port of the A-ATT is connected with the microwave input port of the ADP-2 through AMP2, the ADP-2 is provided with a microwave output port and a detection output port, the output port of the ADP-2 is communicated with the microwave input port of the RF-DET, and the direct current output port of the RF-DET is communicated with the AD detection input port of the MCU.
2. The broadband precise temperature compensation method is characterized by comprising the following steps of:
firstly, initializing and setting an MCU (micro control unit), and electrifying the MCU to enable values of D-ATT and A-ATT to be in a default state;
secondly, the MCU reads the value of the T-DET, and automatically sets the state values of the D-ATT and the A-ATT according to the truth table of the relation between the current temperature and the attenuation value and the temperature stored in the MCU to realize temperature compensation;
thirdly, microwave signals output by the MCU enter the power divider after passing through the D-ATT numerical control attenuator, the AMP1 amplifier, the A-ATT analog voltage control attenuator and the AMP2 amplifier;
fourthly, dividing the microwave signal after attenuation and compensation into two paths after entering a power divider, outputting one path, and entering the other path into an RF-DET for detection to change into a direct-current voltage signal and enter an MCU (microprogrammed control Unit);
and fourthly, the MCU compares the received direct current voltage signal value with the threshold voltage set by the upper computer, and rapidly adjusts the attenuation values of the D-ATT and the A-ATT so as to enable the detection voltage to be equal to the threshold voltage, and finally, the AGC function is realized.
3. The broadband precise temperature compensation method according to claim 2, wherein the MCU sets the amplification amplitude or the attenuation amplitude at will for the instruction sent by the upper computer, so as to realize the amplification and attenuation functions of the device.
4. A method for wideband precision temperature compensation according to any of claims 2-3, wherein D-ATT is 5Bit digital attenuator, step 1DB, adjustable range 31 DB.
5. The method for wideband precision temperature compensation according to any of claims 2-3, wherein the A-ATT is an analog voltage controlled attenuator, step 0.1DB, adjustable range 10 DB.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010775676.3A CN111884601A (en) | 2020-08-05 | 2020-08-05 | Broadband precise temperature-adjustable complementary amplifier and broadband precise temperature compensation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010775676.3A CN111884601A (en) | 2020-08-05 | 2020-08-05 | Broadband precise temperature-adjustable complementary amplifier and broadband precise temperature compensation method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5438683A (en) * | 1992-03-02 | 1995-08-01 | Novatel Communications, Ltd. | Automatic level control circuit for dual mode analog/digital cellular telephone |
| KR20030048969A (en) * | 2001-12-13 | 2003-06-25 | 엘지전자 주식회사 | Automation gain control circuit and method for transmitter in base station |
| KR20090120820A (en) * | 2008-05-20 | 2009-11-25 | 엘지이노텍 주식회사 | AC system |
| CN102802253A (en) * | 2012-07-17 | 2012-11-28 | 武汉虹信通信技术有限责任公司 | Device for controlling power stability of different peak-to-average ratio signals and different timeslot signals |
| CN108809271A (en) * | 2017-05-02 | 2018-11-13 | 北京普源精电科技有限公司 | A kind of alc circuit and radio-frequency signal source |
-
2020
- 2020-08-05 CN CN202010775676.3A patent/CN111884601A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5438683A (en) * | 1992-03-02 | 1995-08-01 | Novatel Communications, Ltd. | Automatic level control circuit for dual mode analog/digital cellular telephone |
| KR20030048969A (en) * | 2001-12-13 | 2003-06-25 | 엘지전자 주식회사 | Automation gain control circuit and method for transmitter in base station |
| KR20090120820A (en) * | 2008-05-20 | 2009-11-25 | 엘지이노텍 주식회사 | AC system |
| CN102802253A (en) * | 2012-07-17 | 2012-11-28 | 武汉虹信通信技术有限责任公司 | Device for controlling power stability of different peak-to-average ratio signals and different timeslot signals |
| CN108809271A (en) * | 2017-05-02 | 2018-11-13 | 北京普源精电科技有限公司 | A kind of alc circuit and radio-frequency signal source |
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