CN113922829A - Multi-functional transmission subassembly of multifrequency simultaneously - Google Patents
Multi-functional transmission subassembly of multifrequency simultaneously Download PDFInfo
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- CN113922829A CN113922829A CN202111157488.5A CN202111157488A CN113922829A CN 113922829 A CN113922829 A CN 113922829A CN 202111157488 A CN202111157488 A CN 202111157488A CN 113922829 A CN113922829 A CN 113922829A
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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
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Abstract
The invention relates to a simultaneous multi-frequency multifunctional transmitting component, which comprises 8 transmitting channels, wherein each channel comprises two transmitting link components with different frequency bands, one transmitting link component is used for generating and saturated transmitting radio frequency signals of a frequency band A, the other transmitting link component is used for generating and linearly transmitting one or more radio frequency signals of a frequency band B, and the transmitting signals of the two links are combined into one path through a duplexer and then fed into an antenna. The assembly can be applied to the integrated design of miniaturized, multifunctional and highly integrated radars.
Description
Technical Field
The invention relates to the technical field of design of T/R components in an active phased array radar, in particular to a T/R component transmitting technology.
Background
Modern phased array radars develop towards high integration and multifunctional integration, and integrate multiple functions such as communication, interference, investigation and the like from traditional active and passive detection. The T/R assembly is used as a core component of the radar, and the functional integration level of the T/R assembly is higher and higher. In order to simplify the design of the array surface and improve the integration degree of functions, the traditional T/R component with single function does not meet the development requirement of the modern radar.
The reports of the multifunctional transmitting component appear in recent years, and most of the reports adopt a mode of time-sharing multifunction or common-frequency simultaneous multifunction (a multifunctional transmitting power amplifier CN 203399064U). Time-sharing versatility is limited in many applications, such as radar that cannot be interrupted and plugged into other transmission tasks while performing communication functions. To this end, it is highly desirable to develop a multi-functional module that can transmit simultaneously. The same frequency and multiple functions are simultaneously realized, the method is suitable for transmitting signals with the same frequency and different powers, and the use scene is limited because the problem of intermodulation of the signals with the same frequency cannot be solved.
Disclosure of Invention
The invention provides a simultaneous multi-frequency multifunctional transmitting component which can realize simultaneous transmission of two or more different frequency signals. The technical scheme adopted by the invention is as follows:
a simultaneous multi-frequency multifunctional transmitting component comprises a digital control unit, a power supply unit and a radio frequency transmitting unit. The radio frequency transmitting unit comprises eight-channel radio frequency transmitting channels, wherein each transmitting channel comprises a saturated transmitting link with a frequency band A, a linear transmitting link with a frequency band B and a duplexer; the saturated transmitting link comprises a DAC-A, a driver amplifier and a power amplifier, and the linear transmitting link comprises a DAC-B, a linear LDMOS driver amplifier and a linear LDMOS power amplifier; the two transmitting chains with different frequency bands are combined into one path by the duplexer to form a transmitting channel.
Further, the DAC-B of each channel linear transmission chain can generate one radio frequency signal, or generate a plurality of radio frequency signals through digital predistortion.
Furthermore, each channel linear transmitting link uses LDMOS driver amplifier and LDMOS power amplifier, and the driver amplifier and the power amplifier work in a linear region.
Furthermore, each channel saturated transmission link can generate a radio frequency signal with a frequency of F1, while the linear transmission link can generate radio frequency signals with frequencies of F2-Fn, and the radio frequency signals of the two transmission links are respectively fed into the two sub-ports of the duplexer and are simultaneously output through the combined port.
The simultaneous multi-frequency multifunctional transmitting component provided by the invention can simultaneously transmit various radio frequency signals during working and simultaneously complete the functions of active detection, communication, identification and the like.
Drawings
Fig. 1 is a composition diagram of a simultaneous multifunctional transmitting module.
Fig. 2 is a schematic block diagram of a transmission channel in the rf transmission unit.
Wherein: the digital radio frequency transmitter comprises a digital control unit 1, a radio frequency transmitting unit 2, a power supply unit 3, a saturated transmitting link 4, a linear transmitting link 5 and a duplexer 6.
Detailed Description
The invention provides a simultaneous multi-frequency multifunctional transmitting assembly which comprises a digital control unit, a power supply unit and an eight-channel radio frequency transmitting unit. Each path of transmitting channel of the eight-channel radio frequency transmitting unit consists of two transmitting links, wherein one transmitting link is a saturated transmitting link, works in a frequency band A, consists of one DAC, one drive amplifier and one power amplifier, realizes signal saturated transmission and is used for active detection of a radar; the other one is a linear transmitting link, works in a frequency band B, consists of one DAC, one driver amplifier and one linear LDMOS power amplifier, and is used for radar communication, identification and other functions. The linear LDMOS driver amplifier and the power amplifier selected by the linear transmission link are benefited, the link can realize the linear transmission of multi-tone signals, namely, the link can realize the transmission of one or more radio frequency signals according to actual requirements, and the transmission intermodulation or stray can be controlled to be at an ideal level. The two transmitting links are combined into one path at the output end by a duplexer, and the same antenna is used for radiation, so that the compact design of the array surface is facilitated.
The invention is further explained below with reference to the figures and examples.
The simultaneous multi-frequency multifunctional transmitting component provided by the invention comprises three units, namely a digital control unit 1, an eight-channel radio frequency transmitting unit 2 and a power supply unit 3. The radio frequency transmitting unit comprises 8 independent transmitting channels, each transmitting channel consists of 2 independent transmitting links, one of the transmitting links is a saturated signal transmitting link 4, and the saturated signal transmitting link works in a frequency band A to generate a single tone signal; the other is a linear signal transmitting link 5, which operates in the frequency band B to generate a multi-tone signal.
The digital control unit 1 receives the baseband data sent by the optical fiber, processes the baseband data and sends the processed baseband data to each DAC (digital-to-analog converter) in the radio frequency transmitting unit 2. The saturated transmitting link 4 generates radio frequency signals by a DAC-A analog-to-digital converter, and the radio frequency signals are sent to a driver amplifier, then sent to a power amplifier and finally sent to a duplexer 6. The DAC-B analog-to-digital converter of the linear transmission chain 5 can generate various radio frequency (polyphonic) or one (single tone) signal according to the requirement, and when generating the polyphonic signal, the mutual interference of the polyphonic signals is reduced through digital predistortion. The multi-tone signal is sent to the linear LDMOS driver for amplification, and then sent to the linear LDMOS power amplifier for linear amplification, the signal mutual interference can be controlled at an ideal level (generally within 50 dB), and the amplified signal is sent to the duplexer 6.
The duplexer 6 combines the transmitting signals of the two transmitting links, and sends the combined signals to the antenna unit through the radio frequency connector, so that the same antenna unit can complete various signal radiation.
Claims (4)
1. The utility model provides a multi-functional transmission subassembly of multifrequency simultaneously which characterized in that: comprises a digital control unit and an eight-channel radio frequency transmitting channel; each transmitting channel comprises a saturated transmitting link with the frequency band of A, a linear transmitting link with the frequency band of B and a duplexer; the saturated transmitting link comprises a DAC-A, a driver amplifier and a power amplifier, and the linear transmitting link comprises a DAC-B, a linear LDMOS driver amplifier and a linear LDMOS power amplifier; the two transmitting chains with different frequency bands are combined into one path by the duplexer to form a transmitting channel.
2. The simultaneous multi-frequency transmission assembly of claim 1, wherein: the DAC-B of each channel linear transmitting chain can generate one radio frequency signal or generate a plurality of radio frequency signals through digital predistortion.
3. The simultaneous multi-frequency transmission assembly of claim 1, wherein: each channel linear transmitting link uses LDMOS driver amplifier and LDMOS power amplifier, and the driver amplifier and the power amplifier work in a linear region.
4. The simultaneous multi-frequency transmission assembly of claim 1, wherein: each channel saturated transmission link can generate a radio frequency signal with the frequency of F1, meanwhile, the linear transmission link can generate radio frequency signals with the frequencies of F2-Fn, and the radio frequency signals of the two transmission links are respectively fed into the two sub-ports of the duplexer and are simultaneously output through the combined port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111157488.5A CN113922829A (en) | 2021-09-30 | 2021-09-30 | Multi-functional transmission subassembly of multifrequency simultaneously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111157488.5A CN113922829A (en) | 2021-09-30 | 2021-09-30 | Multi-functional transmission subassembly of multifrequency simultaneously |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113922829A true CN113922829A (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111157488.5A Pending CN113922829A (en) | 2021-09-30 | 2021-09-30 | Multi-functional transmission subassembly of multifrequency simultaneously |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6567653B1 (en) * | 2000-04-12 | 2003-05-20 | Ericsson Inc. | Dual-mode communications transmitter |
| US20030156060A1 (en) * | 2000-04-07 | 2003-08-21 | Revankar Udayshankar Kashinathrao | Transmit/receiver module for active phased array antenna |
| US20130107984A1 (en) * | 2011-10-28 | 2013-05-02 | TrellisWare Technologies, Inc. (020945) | Method and system for controlling the peak-to-average power ratio of orthogonal frequency-domain signals |
| CN111103569A (en) * | 2019-12-19 | 2020-05-05 | 南京吉凯微波技术有限公司 | Satellite-borne active phased array four-channel microwave TR component capable of self-heating |
| CN211376930U (en) * | 2020-03-11 | 2020-08-28 | 南京威翔科技有限公司 | S-band dual-circular-polarization active phased array antenna |
| CN113422613A (en) * | 2021-05-11 | 2021-09-21 | 翱捷科技股份有限公司 | High-efficiency multimode radio frequency transmitter |
-
2021
- 2021-09-30 CN CN202111157488.5A patent/CN113922829A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030156060A1 (en) * | 2000-04-07 | 2003-08-21 | Revankar Udayshankar Kashinathrao | Transmit/receiver module for active phased array antenna |
| US6567653B1 (en) * | 2000-04-12 | 2003-05-20 | Ericsson Inc. | Dual-mode communications transmitter |
| US20130107984A1 (en) * | 2011-10-28 | 2013-05-02 | TrellisWare Technologies, Inc. (020945) | Method and system for controlling the peak-to-average power ratio of orthogonal frequency-domain signals |
| CN111103569A (en) * | 2019-12-19 | 2020-05-05 | 南京吉凯微波技术有限公司 | Satellite-borne active phased array four-channel microwave TR component capable of self-heating |
| CN211376930U (en) * | 2020-03-11 | 2020-08-28 | 南京威翔科技有限公司 | S-band dual-circular-polarization active phased array antenna |
| CN113422613A (en) * | 2021-05-11 | 2021-09-21 | 翱捷科技股份有限公司 | High-efficiency multimode radio frequency transmitter |
Non-Patent Citations (1)
| Title |
|---|
| 宋云，王维，朱小定，童颖飞，张英浩: "雷达数字T /Ｒ 组件自动测试系统校准方法的研究", 《雷达与对抗》 * |
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Application publication date: 20220111 |