CN115173884A - Automatic gain control MISO radio frequency signal switch network - Google Patents
Automatic gain control MISO radio frequency signal switch network Download PDFInfo
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- CN115173884A CN115173884A CN202210680322.XA CN202210680322A CN115173884A CN 115173884 A CN115173884 A CN 115173884A CN 202210680322 A CN202210680322 A CN 202210680322A CN 115173884 A CN115173884 A CN 115173884A
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- 235000015429 Mirabilis expansa Nutrition 0.000 title claims description 19
- 244000294411 Mirabilis expansa Species 0.000 title claims description 19
- 235000013536 miso Nutrition 0.000 title claims description 19
- 230000003321 amplification Effects 0.000 claims abstract description 11
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 11
- 238000003780 insertion Methods 0.000 abstract description 5
- 230000037431 insertion Effects 0.000 abstract description 5
- 238000002955 isolation Methods 0.000 abstract description 5
- 230000003750 conditioning effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000014207 opsonization Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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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
- H04B1/02—Transmitters
- H04B1/04—Circuits
-
- 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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/0416—Circuits with power amplifiers having gain or transmission power control
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
The application discloses a radio frequency signal switch network of MISO (Single input Single output) of automatic gain control, which comprises a multi-way switch network and an automatic gain amplification module; the multi-way switch network is connected with the automatic gain amplification module. The multi-channel switch network realizes multi-channel input and single-channel output of radio frequency signals, and meanwhile, automatic gain control of the radio frequency signals is realized through the variable gain amplifier. The device has the characteristics of small volume, high isolation, small insertion loss, multiple input channels, automatic gain adjustment of intermediate frequency signals and the like, and is particularly suitable for signal switching and conditioning in the field of microwave radio frequency.
Description
Technical Field
The application relates to the field of microwave radio frequency, in particular to an automatic gain control MISO radio frequency signal switch network.
Background
The microwave switch network is commonly used in various systems in the microwave field, such as automatic testing, radio frequency integration, channel switching and the like, is also a central pivot for radio frequency signal transmission and distribution, and can realize flexible switching of signals of various channels by means of different configurations of the switch system. Meanwhile, when the multi-path radio frequency signals are oriented, the amplitudes of the signals are greatly different, and the signals are still inconvenient to process at the back end after being switched, so that the signals with different amplitudes need to be conditioned to be suitable for being butted with the same processing back end.
In order to solve the above problems, a variety of methods are adopted in a conventional microwave switch network, such as designing an application-specific integrated chip implementation, constructing a ready-made switch chip, and designing a MIMO switch matrix. The designed special integrated chip has small volume and strong specificity, but the cost is too high; the ready-made microwave switch module has more cable connections and large volume; the MIMO switch matrix is used for a switching scenario from a multi-input mode to a multi-output mode, and is complex to implement and has a large number of channels.
On the other hand, to realize the gain control of the radio frequency signal, the available methods include a radio frequency fixed gain amplifier, a radio frequency adjustable gain amplifier, etc., wherein the former method has a fixed gain and a narrow signal amplitude range; one of the radio frequency adjustable gain amplifiers achieves gain control through external control and needs participation of external signals.
Therefore, in the prior art, the microwave switch network cannot realize the synchronization advantages of simple structure and strong applicability.
Disclosure of Invention
The present application aims to provide a radio frequency signal switch network of MISO for automatic gain control in the microwave radio frequency field, which is used to solve the problem of complex structure of the microwave switch network in the prior art.
The application provides a radio frequency signal switch network of an automatic gain control MISO, which comprises a multi-way switch network and an automatic gain amplification module;
the multi-way switch network is connected with the automatic gain amplification module.
Optionally, the multi-way switch network includes two SP8T microwave switches and one SPDT switch;
and the two paths of SP8T microwave switches are respectively connected with the SPDT switch.
Optionally, the SP8T microwave switch is an integrated chip HMC253A;
the SPDT switch is an integrated chip HMC284A.
Optionally, the automatic gain amplifying module includes a variable gain amplifier, a radio frequency detector, a DAC, and a coupler;
the output of the DAC is connected with the input of the radio frequency detector, the output of the radio frequency detector is connected with the variable gain amplifier, and the coupler is respectively connected with the variable gain amplifier and the radio frequency detector.
Optionally, the variable gain amplifier employs an ADL5330 chip, the radio frequency detector employs an AD8318 chip, and the DAC employs a DAC8820 chip.
Optionally, the radio frequency input of the radio frequency signal switch network of the MISO with automatic gain control adopts an integrated LRM radio frequency interface.
Optionally, the output of the radio frequency signal switch network of the MISO with automatic gain control is an SMP interface.
The radio frequency input of the module is an integrated LRM radio frequency interface, and the module has the characteristics of small size and high integration level; the output is a small single-ended SMP interface. The automatic gain control circuit can provide a preset automatic gain control point, and is also provided with an external input voltage interface for adjusting the automatic gain control voltage point.
Drawings
FIG. 1 is a block diagram provided by an embodiment of the present application;
fig. 2 is a structural diagram of a switch network provided in the embodiment of the present application;
fig. 3 is a structural diagram of an automatic gain amplification module according to an embodiment of the present disclosure;
FIG. 4 is a graph of gain voltage of a variable gain amplifier according to an embodiment of the present application;
FIG. 5 is a power-voltage diagram of a radio frequency detector according to an embodiment of the present application;
FIG. 6 is a graph of VOUT versus VSET for the RF detector provided in the embodiments of the present application;
fig. 7 is a corresponding curve diagram of the setting voltage and the input power interval provided in the embodiment of the present application;
Detailed Description
For better understanding of the technical solutions of the present invention, the following detailed description of the present application is made with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 7, fig. 1 is an electrical schematic block diagram of an embodiment of the present application, which is connected to a line according to fig. 1.
The purpose of the application is realized by the following technical scheme: the automatic gain control circuit comprises a multi-way switch network and an automatic gain amplification module.
The multi-way switch network is connected with the automatic gain amplification module.
The Multi-Input Single Output (Multi-Input Single Output) of the radio frequency signal is realized through a Multi-switch network, and meanwhile, the automatic gain control of the radio frequency signal is realized through a variable gain amplifier.
The multi-way switch network comprises two SP8T microwave switches and one SPDT switch, and the two SP8T microwave switches are respectively connected with the SPDT switch. The block diagram is shown in fig. 2.
Wherein the SP8T switch is integrated chip HMC253A, and operating frequency range DC ~ 3GHz, the size is only 4 x 4mm, and the insertion loss is 1.6dB, and the channel isolation can reach 43dB, and the switch switching time is less than 100ns, and integrated 3.
The SPDT switch is an integrated chip HMC284A, the working frequency range is DC-3.5 GHz, the size is only 5 x 3mm, the insertion loss is 0.6dB, the channel isolation can reach 45dB, and the switching time of the switch is less than 20ns; the frequency range of the switch network formed by the method can reach DC-3 GHz, the channel isolation can reach 43dB, the switching time of the switch is less than 100ns, and the insertion loss is about 2.2 dB.
The automatic gain amplification module comprises a variable gain amplifier, a radio frequency detector, a DAC and a coupler;
the output of the DAC is connected with the input of the radio frequency detector, the output of the radio frequency detector is connected with the variable gain amplifier, and the coupler is respectively connected with the variable gain amplifier and the radio frequency detector.
The variable gain amplifier adopts an ADL5330 chip, the radio frequency detector adopts an AD8318 chip, and the DAC adopts a DAC8820 chip.
Specifically, the automatic gain amplifying module part adopts a gain controllable amplifier, and the periphery of the gain controllable amplifier is combined with a radio frequency detector and a DAC (digital-to-analog converter) to realize automatic gain control on the input signal, wherein the automatic gain control range is-34 dB to +22dB, and the block diagram is shown in figure 3. The variable gain amplifier is an ADL5330 chip, the working frequency range is 10 MHz-3 GHz, the variable gain range is-34 dB- +22dB (56 dB), and the gain voltage curve is shown in figure 4. The radio frequency detector selects AD8318, the working frequency range is 1 MHz-8 GHz, the detection output is negative detection (the typical value of the curve of the input power and the output voltage is shown in figure 5), the control function can be realized by using an internal amplifier through a VSET interface, as shown in figure 2, the AD8318 receives the radio frequency signal output by a rear-end amplifier, a VSET port is set by a DAC, the AD8318 adjusts the output VOUT to be a set value related to VSET (as shown in figure 6) by using the internal amplifier according to the VSET set value, and outputs the set value to a control port of a variable gain amplifier, so that the function of automatic gain control is realized. DAC8820 chip and 16bit parallel interface are selected for the DAC, REF195 chip is selected for the voltage reference, the output is +5V, and the voltage resolution is about 0.07mv.
The application is a module with a volume of 160 x 50 x 30mm; the radio frequency input of the connector adopts an LRM interface, is a hybrid high-low frequency connector and has the characteristics of high integration level and small size; the output is a single small SMP interface.
When the variable gain amplifier works, the output voltage of the DAC is set through the control bit of the DAC (which can be realized through an external dial switch) according to the amplitude range of an external input signal, so that the purpose of controlling the output voltage of the AD8318 is achieved, the gain of the variable gain amplifier is realized, and an output intermediate frequency signal is kept in a fixed range (as shown in figure 7); then according to input channel, stir the channel dial switch and carry out the channel switching, the module still contains channel switch pilot lamp, possesses very audio-visual channel instruction function. The DAC interface and the switch switching interface can be realized through an external system interface and a module, so that other systems can be conveniently embedded into the DAC interface and the switch switching interface, and any design change is not needed.
The application designs and realizes an automatic gain control MISO radio frequency signal switch network, which not only realizes the distribution of multi-input radio frequency signals, but also outputs the radio frequency signals in a uniform amplitude range through automatic gain control on different input signals. The application designs and realizes the MISO radio frequency signal switch network of automatic gain control, and realizes switch switching and automatic gain control of multiple paths of radio frequency signals with different amplitudes through a closed-loop method, so that a single channel is automatically switched and output under the condition of not manually switching input ports, output signals are always kept in a set amplitude range, and acquisition and processing of subsequent signals are facilitated.
This application has realized the small advantage of module volume through the chip design (160 x 50 x 30mm), and the isolation is high (is superior to 43 dB), and this application is direct to be connected on the circuit through the chip, does not adopt the cable to carry out the module and connects, consequently has the advantage that the insertion loss is little (be superior to 2.3 dB), and the gain range is wide (can reach 58 dB), and input channel is many (can reach 16 passageways), characteristics such as intermediate frequency signal automatic gain adjusts, characteristics such as specially adapted microwave radio frequency field's signal switching and opsonization.
Although the embodiments of the present application have been described in detail with reference to the accompanying drawings, it should not be construed as limiting the scope of the present application, and various modifications and alterations can be made by those skilled in the art without inventive efforts.
Claims (7)
1. An automatic gain controlled MISO radio frequency signal switching network, characterized in that said automatic gain controlled MISO radio frequency signal switching network comprises a multiple switch network and an automatic gain amplification module;
the multi-way switch network is connected with the automatic gain amplification module.
2. The radio frequency signal switching network of automatic gain controlled MISO of claim 1, characterized in that said multiple switching network comprises two SP8T microwave switches and one SPDT switch;
and the two paths of SP8T microwave switches are respectively connected with the SPDT switch.
3. The radio frequency signal switching network of automatic gain controlled MISO of claim 2,
the SP8T microwave switch is an integrated chip HMC253A;
the SPDT switch is an integrated chip HMC284A.
4. The radio frequency signal switching network of the automatic gain controlled MISO of claim 1, characterized in that the automatic gain amplification module comprises a variable gain amplifier, a radio frequency detector, a DAC and a coupler;
the output of the DAC is connected with the input of the radio frequency detector, the output of the radio frequency detector is connected with the variable gain amplifier, and the coupler is respectively connected with the variable gain amplifier and the radio frequency detector.
5. The radio frequency signal switching network of an automatic gain controlled MISO of claim 4,
the variable gain amplifier adopts an ADL5330 chip, the radio frequency detector adopts an AD8318 chip, and the DAC adopts a DAC8820 chip.
6. The radio frequency signal switching network of an automatic gain controlled MISO of claim 1,
and the radio frequency input of the radio frequency signal switch network of the MISO with automatic gain control adopts an integrated LRM radio frequency interface.
7. The radio frequency signal switching network of automatic gain controlled MISO of claim 1, characterized in that the radio frequency signal switching network output of automatic gain controlled MISO is SMP interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210680322.XA CN115173884A (en) | 2022-06-16 | 2022-06-16 | Automatic gain control MISO radio frequency signal switch network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210680322.XA CN115173884A (en) | 2022-06-16 | 2022-06-16 | Automatic gain control MISO radio frequency signal switch network |
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| CN115173884A true CN115173884A (en) | 2022-10-11 |
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| CN202210680322.XA Pending CN115173884A (en) | 2022-06-16 | 2022-06-16 | Automatic gain control MISO radio frequency signal switch network |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0884088A (en) * | 1994-09-12 | 1996-03-26 | Matsushita Commun Ind Co Ltd | Automatic gain controller |
| CN202308327U (en) * | 2011-11-14 | 2012-07-04 | 蓝宝汽车部件（苏州）有限公司 | Automobile antenna adopting diversity technology |
| US20120319775A1 (en) * | 2011-06-15 | 2012-12-20 | Ricoh Company, Ltd. | Automatic gain control apparatus and method |
| CN102868369A (en) * | 2011-07-05 | 2013-01-09 | 杭州中科微电子有限公司 | Radio frequency automatic gain control amplifier |
| CN103647907A (en) * | 2013-08-15 | 2014-03-19 | 中国航天空气动力技术研究院 | Unmanned aerial vehicle multiplex video switching device |
| CN209879494U (en) * | 2019-01-07 | 2019-12-31 | 四川锦江电子科技有限公司 | Multi-channel data operation acquisition device |
| CN216216781U (en) * | 2021-10-12 | 2022-04-05 | 欣禾电子(上海)有限公司 | Radio frequency modulation circuit |
| CN216565121U (en) * | 2021-06-29 | 2022-05-17 | 成都九洲迪飞科技有限责任公司 | S-band and X-band receiving channel gain self-adaptive adjusting system |
-
2022
- 2022-06-16 CN CN202210680322.XA patent/CN115173884A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0884088A (en) * | 1994-09-12 | 1996-03-26 | Matsushita Commun Ind Co Ltd | Automatic gain controller |
| US20120319775A1 (en) * | 2011-06-15 | 2012-12-20 | Ricoh Company, Ltd. | Automatic gain control apparatus and method |
| CN102868369A (en) * | 2011-07-05 | 2013-01-09 | 杭州中科微电子有限公司 | Radio frequency automatic gain control amplifier |
| CN202308327U (en) * | 2011-11-14 | 2012-07-04 | 蓝宝汽车部件（苏州）有限公司 | Automobile antenna adopting diversity technology |
| CN103647907A (en) * | 2013-08-15 | 2014-03-19 | 中国航天空气动力技术研究院 | Unmanned aerial vehicle multiplex video switching device |
| CN209879494U (en) * | 2019-01-07 | 2019-12-31 | 四川锦江电子科技有限公司 | Multi-channel data operation acquisition device |
| CN216565121U (en) * | 2021-06-29 | 2022-05-17 | 成都九洲迪飞科技有限责任公司 | S-band and X-band receiving channel gain self-adaptive adjusting system |
| CN216216781U (en) * | 2021-10-12 | 2022-04-05 | 欣禾电子(上海)有限公司 | Radio frequency modulation circuit |
Non-Patent Citations (1)
| Title |
|---|
| ANALOG DEVICE: "《AN-1507 APPLICATION NOTE》", pages: 1 * |
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Application publication date: 20221011 |