CN112737621A - Down-conversion module for investigation and interference integrated equipment - Google Patents
Down-conversion module for investigation and interference integrated equipment Download PDFInfo
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- CN112737621A CN112737621A CN202011539581.8A CN202011539581A CN112737621A CN 112737621 A CN112737621 A CN 112737621A CN 202011539581 A CN202011539581 A CN 202011539581A CN 112737621 A CN112737621 A CN 112737621A
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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
- H04B1/26—Circuits for superheterodyne receivers
Abstract
The invention discloses a down-conversion module for detecting interference integrated equipment, which comprises an F1 down-conversion module, an F2 down-conversion module and an F3 down-conversion module, wherein 3 channels of each wave band down-conversion have consistent performance, and the circuit structures of all the channels are basically consistent, and the difference is that a receiving channel 1 of each wave band down-conversion has radio frequency front-end transmitting signal input at a receiving and transmitting switch and 3 paths of detection signal output with different powers; and the receiving channels 2 and 3 are the same, no radio frequency front end transmitting signal is input at the receiving and transmitting switch, and only 1 channel of detection signal is output. The invention has the beneficial effects that: the radio frequency receiving channel circuit structure is consistent, and the phase consistency among 3 receiving channels of each wave band down-conversion can be ensured.
Description
Technical Field
The invention relates to the field of microwave radio frequency, in particular to a down-conversion module for detecting interference integrated equipment.
Background
With the continuous enhancement of military requirements and the rapid development of commercial wireless communication technologies, the down-conversion module is used as the core of a system receiver and plays a crucial role in millimeter wave communication, radar and electronic warfare. The requirements of the existing application requirements on the technical indexes of the down-conversion module are more strict, and by combining the specific use condition of the product, one of the indexes of the product, namely the working frequency range is 0.8GHz-12GHz, because the bandwidth of a received signal is too large, a receiver cannot directly receive and process signals of a wide frequency band, therefore, the signals need to be subjected to segmented frequency conversion processing in the design, and the down-conversion module is functionally divided into three main modules, namely F1: 0.8GHz-2GHz band down-conversion module (3 channels), F2: 2GHz-6GHz band down-conversion module (3 channels), F3: 6GHz-12GHz band down-conversion module (3 channels).
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a down conversion module for detecting interference integration equipment to solve the problem of phase consistency between receiving channels in a wide frequency band.
In order to achieve the purpose, the invention adopts the following technical scheme: a down-conversion module for detecting interference integrated equipment comprises three wide-band signals, and the function of down-conversion is carried out on the signals of nine paths in total, which is mainly composed of F1: 0.8GHz-2GHz band down-conversion (three channels), F2: 2GHz-6GHz band down-conversion (three channels), F3: 6GHz-12GHz band down-conversion (three channels). Preferably, the circuits of 3 receiving channels of the 0.8-2GHz down-conversion are basically consistent, a radio frequency signal is firstly subjected to a receiving and sending switch and then subjected to filtering amplification and then is divided into two paths, wherein one path of signal is used for detection amplification output, the receiving channel 1 is provided with three paths of amplified signals with different powers for output, the circuit structures of the receiving channels 2 and 3 are the same, and the power is divided into two paths of amplified signals for output; and the other path of signal is subjected to numerical control attenuation and amplification, then is subjected to frequency mixing with a local oscillator signal provided by the local oscillator power division amplifying circuit, and finally the obtained frequency mixing signal is filtered, amplified and output.
Preferably, 3 receiving channel circuits of 2-6GHz down-conversion are basically consistent, a radio frequency signal is firstly subjected to a receiving and transmitting switch and then subjected to filtering amplification and then is divided into two paths, wherein one path of signal is used for detection amplification output, a receiving channel 1 is provided with 3 paths of amplification signal output with different powers, the receiving channels 2 and 3 have the same circuit structure, and the power is divided into two paths of amplification signal output; and the other path of signal is subjected to numerical control attenuation and amplification, then is subjected to frequency mixing with a local oscillator signal provided by the local oscillator power division amplifying circuit, and finally the obtained frequency mixing signal is filtered, amplified and output.
Preferably, 3 receiving channel circuits of 6-12GHz down-conversion are basically consistent, a radio frequency signal is firstly subjected to a receiving and transmitting switch and then subjected to filtering amplification and then divided into 2 paths of power, wherein one path of signal is used for detecting, amplifying and outputting, a receiving channel 1 is provided with 3 paths of amplified signals with different powers for outputting, the receiving channels 2 and 3 have the same circuit structure, and the power is divided into two paths of amplified signals for outputting; and the other path of signal is subjected to numerical control attenuation and amplification, then is subjected to frequency mixing with a local oscillator signal provided by the local oscillator power division amplifying circuit, and finally the obtained frequency mixing signal is filtered, amplified and output.
Preferably, the local oscillator power division amplifying circuit divides each local oscillator signal into 3 channels of signals by a power division-amplification-power division structure for the local oscillator signals of the three band down-conversion respectively, and the signals are supplied to the 3 channels of receiving channels of the each band down-conversion respectively.
Preferably, in order to ensure the consistency of the performance of the 3 channels of each band down-conversion, the circuit structures of each channel are basically consistent, and the difference is that the receiving channel 1 of each band down-conversion has an input of a radio frequency front end transmitting signal at a transceiving switch, and in addition, has 3 paths of detection signals with different powers to output; and the receiving channels 2 and 3 have no radio frequency front end transmitting signal input at the transceiving switch, and only have 1-path detection signal output. The scheme has the advantages that the radio frequency receiving channel circuit structures are consistent, and the phase consistency among 3 receiving channels of down-conversion of each wave band can be ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a block diagram of the receiving channel 1 of the F1 down conversion module of the present invention;
FIG. 3 is a block diagram of the receiver channel 2 of the down conversion module of F1 according to the present invention;
FIG. 4 is a block diagram of the receiver channel 1 of the down conversion module of F2 according to the present invention;
FIG. 5 is a block diagram of the receiver channel 2 of the F2 down conversion module of the present invention;
FIG. 6 is a block diagram of the receiver channel 1 of the down conversion module of F3 according to the present invention;
FIG. 7 is a block diagram of the receiver channel 2 of the F3 down conversion module of the present invention;
[ description of reference ]
11. An F1 down-conversion module; 12. an F2 down-conversion module; 13. f3 down conversion module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a down-conversion module for detecting an interference-integrating device includes F1: 0.8GHz-2GHz band down-conversion module (3 channels), F2: 2GHz-6GHz band down-conversion module (3 channels), F3: 6GHz-12GHz band down-conversion module (3 channels).
As an exemplary illustration, a down conversion module for detecting an interference integration apparatus, please refer to fig. 2-7, as shown in fig. 2 and fig. 3: the F1 down-conversion module 0.8-2GHz down-conversion channel generates a 3-4.2GHz signal by mixing a 0.8-2GHz signal with a 5GHz local oscillator signal, generates a 0.3-1.5GHz signal by mixing a 3-4.2GHz signal with a 4.5GHz local oscillator signal, and outputs a 0.5-1.5GHz signal through a primary band-pass filter to realize frequency conversion output.
As shown in fig. 4 and 5, the 2-6GHz down-conversion generates a 0.5-1.5GHz signal by mixing the 2-6GHz signal with the 6.5/5.5/4.5/3.5/2.5GHz local oscillation signal, and performs spurious suppression on the 2-6GHz signal and the coarse sampling local oscillation signal at the mixing output port to realize frequency conversion output.
As shown in fig. 6 and 7, the 6-12GHz down-conversion generates a 0.5-1.5GHz signal by mixing a 6-12GHz signal with a 12.5/11.5/10.5/9.5/8.5/7.5GHz local oscillation signal, and for each receiving fine acquisition channel of the 2-6GHz and 6-12GHz down-conversion, a SAW filter is selected to improve an out-of-band rejection degree, thereby realizing frequency conversion output.
The invention solves the requirements of wide frequency band and stable phase of the system through the embodiment, can realize frequency conversion processing of 0.8GHz-12GHz signal frequency division bands, and has good stability of down-converted intermediate frequency output.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (4)
1. A down conversion module for detecting interference integrated equipment is characterized in that: in order to realize the function of down-converting three wide-band signals, namely a total nine-path signal, the frequency converter is mainly composed of an F1: 0.8GHz-2GHz band down-conversion (three channels), F2: 2GHz-6GHz band down-conversion (three channels), F3: 6GHz-12GHz band down-conversion (three channels).
2. The down-conversion module for the jamming-detection-integrated apparatus according to claim 1, wherein: in order to ensure the consistency of the performance of the three channels of the down-conversion of each wave band, the circuit structure of each channel is basically consistent.
3. A down-conversion module for a jammer detection integrated device according to claim 1 or 2, characterized in that: in order to improve the requirement of the isolation between channels, cavity isolation is added in the module packaging design.
4. The down-conversion module of claim 1, wherein the down-conversion module comprises: the receiving channel 1 of each band down-conversion has radio frequency front end transmitting signal input at the receiving and transmitting switch, and has three paths of detection signal output with different power, the receiving channels 2 and 3 have the same circuit structure, no radio frequency front end transmitting signal input is at the receiving and transmitting switch, and only one path of detection signal output is at the same time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011539581.8A CN112737621A (en) | 2020-12-23 | 2020-12-23 | Down-conversion module for investigation and interference integrated equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011539581.8A CN112737621A (en) | 2020-12-23 | 2020-12-23 | Down-conversion module for investigation and interference integrated equipment |
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| CN112737621A true CN112737621A (en) | 2021-04-30 |
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| CN202011539581.8A Pending CN112737621A (en) | 2020-12-23 | 2020-12-23 | Down-conversion module for investigation and interference integrated equipment |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956975A (en) * | 2014-05-21 | 2014-07-30 | 北京遥测技术研究所 | Multi-channel phase matching type down-conversion link |
| CN204886942U (en) * | 2015-07-17 | 2015-12-16 | 安徽四创电子股份有限公司 | Integration X wave band transceiver module |
| CN105281675A (en) * | 2015-11-20 | 2016-01-27 | 中国电子科技集团公司第三十八研究所 | Down-conversion module with ultra-wide and large instantaneous bandwidth and frequency conversion method thereof |
| CN109861708A (en) * | 2018-10-24 | 2019-06-07 | 上海无线电设备研究所 | A kind of eight channel receiver of Ku wave band of subminaturization high-isolation |
-
2020
- 2020-12-23 CN CN202011539581.8A patent/CN112737621A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103956975A (en) * | 2014-05-21 | 2014-07-30 | 北京遥测技术研究所 | Multi-channel phase matching type down-conversion link |
| CN204886942U (en) * | 2015-07-17 | 2015-12-16 | 安徽四创电子股份有限公司 | Integration X wave band transceiver module |
| CN105281675A (en) * | 2015-11-20 | 2016-01-27 | 中国电子科技集团公司第三十八研究所 | Down-conversion module with ultra-wide and large instantaneous bandwidth and frequency conversion method thereof |
| CN109861708A (en) * | 2018-10-24 | 2019-06-07 | 上海无线电设备研究所 | A kind of eight channel receiver of Ku wave band of subminaturization high-isolation |
Non-Patent Citations (1)
| Title |
|---|
| 杜清府: "太阳射电观测系统多通道变频电路一致性补偿方法与实现", 《中国科学: 技术科学》 * |
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Application publication date: 20210430 |