CN111323758A - Radar and confrontation dual-mode duplex multifunctional frequency conversion assembly - Google Patents
Radar and confrontation dual-mode duplex multifunctional frequency conversion assembly Download PDFInfo
- Publication number
- CN111323758A CN111323758A CN201911387030.1A CN201911387030A CN111323758A CN 111323758 A CN111323758 A CN 111323758A CN 201911387030 A CN201911387030 A CN 201911387030A CN 111323758 A CN111323758 A CN 111323758A
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- circuit
- switch
- radar
- frequency signal
- 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/36—Means for anti-jamming, e.g. ECCM, i.e. electronic counter-counter measures
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
The invention discloses a radar and countermeasure dual-mode duplex multifunctional frequency conversion component. The frequency conversion component comprises a time delay circuit, a switch matrix, a down-conversion circuit and a transmitting drive circuit; in a receiving state working mode, a radio frequency signal is input by a delay circuit, is transmitted to a down-conversion circuit by a switch matrix after numerical control delay and gain compensation, and outputs a radar intermediate frequency signal and an electronic countermeasure intermediate frequency signal; in a transmitting state working mode, a radio frequency signal is input by a transmitting driving circuit, is transmitted to a delay circuit by a switch matrix after being subjected to numerical control phase shifting and driving amplification, and is output as a transmitting intermediate frequency signal after being subjected to numerical control delay and gain compensation; in a self-checking state working mode, a radio frequency signal is input by the transmitting drive circuit, is transmitted to the down-conversion circuit by the switch matrix after being subjected to numerical control phase shifting and drive amplification, and outputs a radar intermediate frequency signal and an electronic countermeasure intermediate frequency signal. The invention has simple structure and high integration level, has three functions of receiving, transmitting and self-checking, and improves the universality and the utilization efficiency of the assembly.
Description
Technical Field
The invention relates to the technical field of radar and countermeasure, in particular to a multifunctional frequency conversion component for dual-mode duplexing of radar and countermeasure.
Background
The frequency conversion component can convert a high-frequency signal at the front end of the radio frequency into an intermediate-frequency signal which can be processed by a rear-end digital receiver, or convert a digital baseband signal into a radio-frequency signal and transmit the radio-frequency signal to the front end of the radio frequency for emission, and the frequency conversion component is a key device in a radar and countermeasure system. With the increasing demands for integration, miniaturization and multifunction of microwave systems, the demands for generalization and miniaturization of frequency conversion components are also increasing. The radar system and the electronic countermeasure system have large difference on the requirements of intermediate frequency signals, and the requirements are as follows: (1) the bandwidth difference is that the working bandwidth of the radar system is narrow and is far smaller than the bandwidth of an electronic countermeasure system; (2) the center frequency points are different, and the radar intermediate frequency is lower than the electronic countermeasure system intermediate frequency; (3) the gain difference, the intermediate frequency gain and the dynamic range of the radar system are higher than those of the electronic countermeasure system.
Due to the inconsistency of the radar and the electronic countermeasure system for the requirements of the intermediate frequency signals, the frequency conversion component which supports the radar and the countermeasure system at the same time at present has the following problems: (1) a time-sharing working mode is adopted, the channel gain bandwidth and the like are adjusted according to specific requirements, and the duality is not achieved; (2) and two independent frequency conversion channels are adopted, so that a complete frequency conversion function is realized, and the complexity of the assembly is high.
Disclosure of Invention
The invention aims to provide a radar and dual-mode duplex resisting multifunctional frequency conversion component with a simple circuit structure, and the function of simultaneously outputting intermediate frequencies of two modes is realized.
The technical solution for realizing the purpose of the invention is as follows: a radar and confrontation dual-mode duplex multifunctional frequency conversion assembly comprises a delay circuit, a down-conversion circuit, a transmission driving circuit and a switch matrix;
the delay circuit is used for performing signal delay and gain compensation;
the down-conversion circuit is used for performing down-conversion on the radio-frequency signals from the switch matrix and outputting radar intermediate-frequency signals and electronic countermeasure intermediate-frequency signals;
the emission driving circuit is used for carrying out numerical control phase shifting and driving amplification processing on an external excitation signal;
and the switch matrix controls the on-off state of each port according to the working state of the assembly.
Further, the multifunctional frequency conversion assembly comprises three working states of receiving, transmitting and self-checking:
in a receiving state working mode, a radio frequency signal RF1 is input by a delay circuit, is transmitted to a down-conversion circuit by a switch matrix after numerical control delay and gain compensation, and simultaneously outputs two paths of intermediate frequency signals of a radar intermediate frequency signal and an electronic countermeasure intermediate frequency signal;
in a transmitting state working mode, a radio frequency signal RF2 is input by a transmitting drive circuit, is transmitted to a delay circuit by a switch matrix after being subjected to numerical control phase shifting and drive amplification, and is output as a transmitting intermediate frequency signal after being subjected to numerical control delay and gain compensation;
in a self-checking state working mode, a radio frequency signal RF2 is input by a transmitting drive circuit, is transmitted to a down-conversion circuit by a switch matrix after being subjected to numerical control phase shifting and drive amplification, and simultaneously outputs two paths of intermediate frequency signals of a radar intermediate frequency signal and an electronic countermeasure intermediate frequency signal.
Furthermore, the delay circuit comprises a first bidirectional amplifier, a first delayer, a second bidirectional amplifier, a second delayer and a third signal amplifier which are connected in sequence, and in a receiving state working mode, a received signal is subjected to delay and gain compensation and then transmitted to a switch matrix, and then is converted into an intermediate frequency signal by a down-conversion circuit and then output; and in the transmitting state working mode, outputting a transmitting intermediate frequency signal after carrying out numerical control delay and gain compensation on the radio frequency signal from the switch matrix.
Further, the down-conversion circuit comprises an electronic impedance down-conversion circuit, a power divider and a radar down-conversion circuit; the down-conversion circuit receives radio frequency signals from the switch matrix, the radio frequency signals are firstly converted into intermediate frequency signals IF through the electronic countermeasure down-conversion circuit, the intermediate frequency signals IF are divided into two paths through the power divider, one path is directly output as electronic countermeasure intermediate frequency signals IF _ EW, and the other path is down-converted into Radar intermediate frequency signals IF _ Radar through the Radar down-conversion circuit and is output.
Furthermore, the transmission driving circuit comprises an equalizer, an amplifier and a phase shifter which are connected in sequence, receives an external excitation signal, and performs numerical control phase shifting and driving amplification processing.
Furthermore, the switch matrix comprises a first radio frequency switch, a second radio frequency switch, a third radio frequency switch and a fixed attenuator, wherein the first radio frequency switch, the second radio frequency switch and the third radio frequency switch are respectively connected with the delay circuit, the down-conversion circuit and the transmission driving circuit;
the switch matrix controls the interconnection state among the ports according to different working states:
under the working mode of a receiving state, the port 1 of the first radio frequency switch is communicated with the port 2 of the third radio frequency switch, and a radio frequency signal RF3 from the delay circuit passes through the first radio frequency switch and the third radio frequency switch and then is transmitted to a down-conversion circuit as a radio frequency signal RF5 to realize a receiving function;
under the working mode of the self-checking state, the port 2 of the second radio frequency switch is conducted with the port 1 of the third radio frequency switch, and a radio frequency signal RF4 from the emission driving circuit passes through the second radio frequency switch and the third radio frequency switch and then is transmitted to the down-conversion circuit as a radio frequency signal RF5, so that the self-checking function is realized;
under the working mode of a transmitting state, the port 2 of the first radio frequency switch is communicated with the port 1 of the second radio frequency switch, and a radio frequency signal RF4 from the transmitting driving circuit passes through the second radio frequency switch, the fixed attenuator and the first radio frequency switch and then is transmitted to the delay circuit as a radio frequency signal RF3, so that the transmitting function is realized.
Compared with the prior art, the invention has the following remarkable advantages: (1) double-mode duplexing: the composite material can be used as a down-conversion component to be simultaneously (dualduplexed) applied to a radar system and an electronic countermeasure system (dual mode), and has the same index as that of the frequency conversion component of a discrete frequency conversion channel, and simultaneously, the complexity of a microwave complete machine system is reduced; (2) integration and multifunction: the three functions of receiving, transmitting and self-checking are integrated by utilizing the internal switch matrix of the component, so that the universality and the utilization efficiency of the component are improved; (3) the structure is simple: the radar down-conversion circuit multiplexes an electronic countermeasure down-conversion circuit, and the self-checking working state multiplexes a transmitting drive circuit, so that the utilization rate of an internal circuit is finally improved, the complexity of the assembly is reduced, and the size of the assembly is reduced.
Drawings
Fig. 1 is a block diagram of a radar and dual-mode duplex-resistant multifunctional frequency conversion component according to the present invention.
Fig. 2 is a block diagram of the delay circuit of the present invention.
Fig. 3 is a block diagram of a down-conversion circuit according to the present invention.
Fig. 4 is a block diagram of the structure of the emission driving circuit in the present invention.
Fig. 5 is a block diagram of the switch matrix circuit of the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
With reference to fig. 1, the multifunctional frequency conversion module for dual-mode duplexing of radar and countermeasure of the present invention includes a delay circuit 1, a down-conversion circuit 2, a transmission driving circuit 3 and a switch matrix 4;
the delay circuit 1 is used for signal delay and gain compensation;
the down-conversion circuit 2 is used for performing down-conversion on the radio-frequency signals from the switch matrix 4 and outputting radar intermediate-frequency signals and electronic countermeasure intermediate-frequency signals;
the emission driving circuit 3 is used for carrying out numerical control phase shifting and driving amplification processing on an external excitation signal;
and the switch matrix 4 controls the on-off state of each port according to the working state of the assembly.
A radar and confrontation dual-mode duplex multifunctional frequency conversion assembly comprises three working states of receiving, transmitting and self-checking;
in a receiving state working mode, a radio frequency signal RF1 is input by a delay circuit 1, is transmitted to a down-conversion circuit 2 by a switch matrix 4 after numerical control delay and gain compensation, and simultaneously outputs two paths of intermediate frequency signals of a radar intermediate frequency signal and an electronic countermeasure intermediate frequency signal;
in the working mode of a transmitting state, a radio frequency signal RF2 is input by a transmitting drive circuit 3, is transmitted to a delay circuit 1 by a switch matrix 4 after numerical control phase shifting and drive amplification, and outputs a transmitting intermediate frequency signal after numerical control delay and gain compensation;
in the self-checking state working mode, a radio frequency signal RF2 is input by a transmitting drive circuit 3, is transmitted to a down-conversion circuit 2 by a switch matrix 4 after numerical control phase shifting and drive amplification, and simultaneously outputs two paths of intermediate frequency signals of a radar intermediate frequency signal and an electronic countermeasure intermediate frequency signal.
Furthermore, the delay circuit 1 is a two-port circuit, one end of the delay circuit is an external radio frequency interface, the front end component is connected in a butt joint mode, and the other end of the delay circuit is connected with the switch matrix 4 in a butt joint mode. The circuit completes the functions of signal delay and gain compensation, consists of a first bidirectional amplifier (U1), a first delayer (D1), a second bidirectional amplifier (U2), a second delayer (D2) and a third signal amplifier (U3) which are connected in sequence, and has the characteristic of reciprocity. The insertion loss of the delayers is large, in order to reduce the noise coefficient of the circuit and prevent the signal to noise ratio from being deteriorated greatly, the front and the back of each delayer are connected with two-way amplifiers in a symmetrical distribution shape, as shown in figure 2. In the receiving state, the external RF signal RF1 is amplified and delayed to be converted into RF3, and then transmitted to the switch matrix 4; in the transmitting state, the RF signal RF3 from the switch matrix 4 is digitally delayed and amplified by the driver to output RF 1.
Further, the down-conversion circuit 2 down-converts the radio frequency signal RF5 from the switch matrix 4, and outputs two paths of intermediate frequency signals IF _ EW (Radar intermediate frequency signal, wideband, high frequency) and IF _ Radar (electronic countermeasure intermediate frequency signal, narrowband, low frequency). In order to simplify the frequency conversion circuit and realize the function of dual-mode duplex, the radar down-conversion circuit multiplexes an electronic countermeasure down-conversion circuit, as shown in fig. 3. The electronic countermeasure down-conversion circuit consists of a preselected filter group (for filtering false intermediate frequency and image signals), a pre-amplifier (for reducing noise coefficient), a numerical control attenuator (for expanding dynamic range), and a mixing filter (which can be one-stage or multi-stage mixing according to requirements). The RF5 is converted into an intermediate frequency signal IF through an electronic countermeasure down-conversion circuit, and then is divided into two paths through a power divider U7, wherein one path is used as an electronic countermeasure intermediate frequency IF _ EW for output, and the other path is down-converted again, filtered, amplified and subjected to numerical control attenuation and then is used as a Radar intermediate frequency IF _ Radar for output.
Further, as shown in fig. 4, the transmission driving circuit 3 outputs a radio frequency RF4 to the switch matrix 4 after an input signal is an external excitation signal RF2 and is amplified, equalized and phase-shifted. The transmit driver circuit includes an equalizer U4, an amplifier U5, and a phase shifter U6. The equalizer U4 is used for carrying out amplitude equalization on the broadband signal and ensuring the flatness of the output signal; the amplifier U5 amplifies the radio frequency signal to prevent the signal-to-noise ratio from deteriorating; the phase shifter U6 shifts the phase of the rf signal to ensure phase consistency among the components.
Further, as shown in fig. 5, the switch matrix 4 includes a first rf switch S1, a second rf switch S2, a third rf switch S3 and a fixed attenuator U8, and is a three-port circuit, and is respectively connected to the delay circuit 1, the down-converter circuit 2 and the transmission driver circuit 3. The switch matrix 4 controls the interconnection state between the ports according to different working states:
in the receiving state working mode, the port 1 of the first RF switch S1 is connected to the port 2 of the third RF switch S3, and the RF signal RF3 from the delay circuit 1 passes through the first RF switch S1 and the third RF switch S3 and then is transmitted to the down-conversion circuit 2 as the RF signal RF5, so as to implement the receiving function;
in the self-checking state working mode, the port 2 of the second radio frequency switch S2 is connected with the port 1 of the third radio frequency switch S3, and the radio frequency signal RF4 from the emission driving circuit 3 passes through the second radio frequency switch S2 and the third radio frequency switch S3 and then is transmitted to the down-conversion circuit 2 as the radio frequency signal RF5, so that the self-checking function is realized;
in the transmitting state operating mode, the port 2 of the first RF switch S1 is connected to the port 1 of the second RF switch S2, and the RF signal RF4 from the transmission driving circuit 3 passes through the second RF switch S2, the fixed attenuator U8 and the first RF switch S1 and then is transmitted to the delay circuit 1 as the RF signal RF3, so as to implement the transmission driving function.
The down-conversion component can be simultaneously (dualduplexing) applied to a radar system and an electronic countermeasure system (dual mode), and has the same index as that of the frequency conversion component of a discrete frequency conversion channel, and simultaneously reduces the complexity of a microwave complete machine system; the three functions of receiving, transmitting and self-checking are integrated by utilizing the internal switch matrix of the component, so that the universality and the utilization efficiency of the component are improved; the radar down-conversion circuit multiplexes an electronic countermeasure down-conversion circuit, and the self-checking working state multiplexes a transmitting drive circuit, so that the utilization rate of an internal circuit is finally improved, the complexity of the assembly is reduced, and the size of the assembly is reduced.
Claims (6)
1. A radar and countermeasure dual-mode duplex multifunctional frequency conversion component is characterized by comprising a time delay circuit (1), a down conversion circuit (2), a transmission driving circuit (3) and a switch matrix (4);
the delay circuit (1) is used for carrying out signal delay and gain compensation;
the down-conversion circuit (2) is used for down-converting the radio frequency signals from the switch matrix (4) and outputting radar intermediate frequency signals and electronic countermeasure intermediate frequency signals;
the emission driving circuit (3) is used for carrying out numerical control phase shifting and driving amplification processing on an external excitation signal;
and the switch matrix (4) controls the on-off state of each port according to the working state of the assembly.
2. The dual-mode duplex radar and countermeasure multifunctional frequency conversion assembly according to claim 1, wherein the multifunctional frequency conversion assembly comprises three working states of receiving, transmitting and self-checking:
in a receiving state working mode, a radio frequency signal RF1 is input by a delay circuit (1), is transmitted to a down-conversion circuit (2) by a switch matrix (4) after numerical control delay and gain compensation, and simultaneously outputs two paths of intermediate frequency signals of a radar intermediate frequency signal and an electronic countermeasure intermediate frequency signal;
in a transmitting state working mode, a radio frequency signal RF2 is input by a transmitting drive circuit (3), is transmitted to a delay circuit (1) by a switch matrix (4) after being subjected to numerical control phase shifting and drive amplification, and is output as a transmitting intermediate frequency signal after being subjected to numerical control delay and gain compensation;
in a self-checking state working mode, a radio frequency signal RF2 is input by a transmitting drive circuit (3), is transmitted to a down-conversion circuit (2) by a switch matrix (4) after being subjected to numerical control phase shifting and drive amplification, and simultaneously outputs two paths of intermediate frequency signals of a radar intermediate frequency signal and an electronic countermeasure intermediate frequency signal.
3. The radar and countermeasure dual-mode duplex multifunctional frequency conversion assembly according to claim 1 or 2, wherein the delay circuit (1) comprises a first bidirectional amplifier (U1), a first delay (D1), a second bidirectional amplifier (U2), a second delay (D2) and a third signal amplifier (U3) which are connected in sequence, and in a receiving state working mode, a received signal is transmitted to the switch matrix (4) after being subjected to delay and gain compensation, and then is converted into an intermediate frequency signal by the down-conversion circuit (2) and then is output; and in the transmitting state working mode, the radio frequency signal from the switch matrix (4) is subjected to numerical control delay and gain compensation, and then a transmitting intermediate frequency signal is output.
4. The dual radar and countermeasure dual mode duplex multifunctional frequency conversion assembly according to claim 1 or 2, characterized in that the down conversion circuit (2) comprises an electronic countermeasure down conversion circuit, a power divider (U7) and a radar down conversion circuit; the down-conversion circuit (2) receives radio frequency signals from the switch matrix (4), the radio frequency signals are firstly converted into intermediate frequency signals IF through the electronic countermeasure down-conversion circuit, the intermediate frequency signals IF are subjected to power division through the power divider (U7), one path of signals are directly output as electronic countermeasure intermediate frequency signals IF _ EW, and the other path of signals are subjected to down-conversion through the Radar down-conversion circuit to be output as Radar intermediate frequency signals IF _ Radar.
5. The dual-mode duplex multifunctional frequency conversion assembly for radar and countermeasure according to claim 1 or 2, wherein the transmission driving circuit (3) comprises an equalizer (U4), an amplifier (U5) and a phase shifter (U6) which are connected in sequence, and receives an external excitation signal, and performs numerical control phase shifting and driving amplification processing.
6. The radar and countermeasure dual mode duplex multifunctional frequency conversion assembly according to claim 1 or 2, wherein the switch matrix (4) comprises a first radio frequency switch (S1), a second radio frequency switch (S2), a third radio frequency switch (S3) and a fixed attenuator (U8), and the first radio frequency switch (S1), the second radio frequency switch (S2) and the third radio frequency switch (S3) are respectively connected with the delay circuit (1), the down-conversion circuit (2) and the transmission driving circuit (3);
the switch matrix (4) controls the interconnection state among the ports according to different working states:
in a receiving state working mode, a port 1 of the first radio frequency switch (S1) is connected with a port 2 of the third radio frequency switch (S3), and a radio frequency signal RF3 from the delay circuit (1) passes through the first radio frequency switch (S1) and the third radio frequency switch (S3) and then is transmitted to the down-conversion circuit (2) as a radio frequency signal RF5 to realize a receiving function;
under the working mode of the self-checking state, a port 2 of the second radio frequency switch (S2) is conducted with a port 1 of the third radio frequency switch (S3), and a radio frequency signal RF4 from the emission driving circuit (3) passes through the second radio frequency switch (S2) and the third radio frequency switch (S3) and then is transmitted to the down-conversion circuit (2) as a radio frequency signal RF5, so that the self-checking function is realized;
in the transmitting state working mode, the port 2 of the first radio frequency switch (S1) is connected with the port 1 of the second radio frequency switch (S2), and the radio frequency signal RF4 from the transmitting driving circuit (3) passes through the second radio frequency switch (S2), the fixed attenuator (U8) and the first radio frequency switch (S1) and then is transmitted to the delay circuit (1) as the radio frequency signal RF3, so that the transmitting function is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387030.1A CN111323758B (en) | 2019-12-30 | 2019-12-30 | Multifunctional frequency conversion assembly for radar and countermeasure dual-mode duplex |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387030.1A CN111323758B (en) | 2019-12-30 | 2019-12-30 | Multifunctional frequency conversion assembly for radar and countermeasure dual-mode duplex |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111323758A true CN111323758A (en) | 2020-06-23 |
| CN111323758B CN111323758B (en) | 2023-06-09 |
Family
ID=71171840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911387030.1A Active CN111323758B (en) | 2019-12-30 | 2019-12-30 | Multifunctional frequency conversion assembly for radar and countermeasure dual-mode duplex |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111323758B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066390A1 (en) * | 2022-09-27 | 2024-04-04 | 中兴通讯股份有限公司 | Network time synchronization method and system, and electronic device and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014056379A1 (en) * | 2012-10-10 | 2014-04-17 | 中兴通讯股份有限公司 | Down-conversion device and realizing method thereof and receiver |
| CN204408339U (en) * | 2015-02-16 | 2015-06-17 | 公安部沈阳消防研究所 | A kind of two-way frequency-converter power amplifier |
| CN205945652U (en) * | 2016-08-25 | 2017-02-08 | 成都益为创科技有限公司 | Distributing type converter |
| US20180014300A1 (en) * | 2016-07-06 | 2018-01-11 | Fujitsu Limited | Wireless communication system, base station, and terminal |
| CN108574496A (en) * | 2017-03-08 | 2018-09-25 | 深圳市脉冲星通信科技有限公司 | Track communication base station antenna system |
-
2019
- 2019-12-30 CN CN201911387030.1A patent/CN111323758B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014056379A1 (en) * | 2012-10-10 | 2014-04-17 | 中兴通讯股份有限公司 | Down-conversion device and realizing method thereof and receiver |
| CN204408339U (en) * | 2015-02-16 | 2015-06-17 | 公安部沈阳消防研究所 | A kind of two-way frequency-converter power amplifier |
| US20180014300A1 (en) * | 2016-07-06 | 2018-01-11 | Fujitsu Limited | Wireless communication system, base station, and terminal |
| CN205945652U (en) * | 2016-08-25 | 2017-02-08 | 成都益为创科技有限公司 | Distributing type converter |
| CN108574496A (en) * | 2017-03-08 | 2018-09-25 | 深圳市脉冲星通信科技有限公司 | Track communication base station antenna system |
Non-Patent Citations (2)
| Title |
|---|
| 姚若妍等: "Ku波段收发组件设计分析" * |
| 韦炜等: "基于开关矩阵的多功能变频组件自动测试平台" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024066390A1 (en) * | 2022-09-27 | 2024-04-04 | 中兴通讯股份有限公司 | Network time synchronization method and system, and electronic device and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111323758B (en) | 2023-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20070161357A1 (en) | Multiband antenna switch | |
| EP1710920A1 (en) | Receiving modulated radio signals | |
| CN102347778A (en) | Self-adapting interference cancellation device and debugging method thereof | |
| CN109361406B (en) | FDD full-frequency band transceiver | |
| CN111030725A (en) | Superheterodyne ultrashort wave transceiving channel system | |
| US5933770A (en) | Low distortion tuner-receiver with bridge-type diplexer | |
| CN100355212C (en) | Integral Ku band high balance degree multi-channel receiver | |
| CN111323758B (en) | Multifunctional frequency conversion assembly for radar and countermeasure dual-mode duplex | |
| JPH0378329A (en) | Rf transmitting/receiving circuit of shifting body communication facility | |
| CN103684330A (en) | Medium frequency filter simultaneously applied to wireless receiver and transmitter | |
| CN112803964A (en) | Broadband Ka-band radio frequency front-end system and design method | |
| CN210405279U (en) | Receive front end module | |
| CN111130747B (en) | Wideband receiver compatible with voice channel | |
| JP2002208874A (en) | High frequency circuit | |
| CN107769800A (en) | Communication control processor between a kind of multifrequency point Terahertz star | |
| CN113507290B (en) | Bidirectional multi-polarization mode transceiving system and transceiving method thereof | |
| CN110289872A (en) | Full duplex very high frequency(VHF) data exchange system receiver | |
| CN213484821U (en) | Frequency conversion assembly for electronic warfare and surveillance equipment | |
| CN114337721A (en) | Multi-carrier communication system and method | |
| CN210225409U (en) | TR subassembly of X wave band | |
| CN110912569B (en) | Ultrashort wave broadband transceiver | |
| CN110940969A (en) | Digital T/R assembly for multi-beam DBF phased array system | |
| CN215682495U (en) | Intermodulation test system | |
| CN220457395U (en) | A multifrequency section transceiver for bearing scattering | |
| JPH08195695A (en) | Transmitter-receiver with shared antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 225001 No. 26, South River, Jiangsu, Yangzhou Applicant after: Yangzhou Institute of marine electronic instruments (no.723 Institute of China Shipbuilding Industry Corp.) Address before: 225001 No. 186 East Wuzhou Road, Yangzhou City, Jiangsu Province Applicant before: Yangzhou Institute of marine electronic instruments (no.723 Institute of China Shipbuilding Industry Corp.) |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |