Single-antenna high-isolation linear frequency modulation continuous wave radar antenna system
An antenna system, linear frequency modulation technology, applied in the direction of antenna, antenna coupling, antenna components, etc., to achieve the effect of improving isolation and strong environmental adaptability
Pending Publication Date: 2020-10-16
BEIJING YOUHANG ELECTROMECHANICAL TECH
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Problems solved by technology
[0006] The purpose of the present invention is to provide a single-antenna high-isolation linear frequency modulation continuous wave radar antenna system to solve technical problems such as linear frequency modulation continuous wave radar transceiver isolation and miniaturization
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[0022] Concrete structure of the present invention sees Picture 1-1 , 1-2 , 1-3, 1-4, 1-5, 2-1, 2-2, 3, 4 and 5. A single-antenna high-isolation linear frequency modulation continuous wave radar antenna system includes an antenna circuit board, a frequency conversion circuit board, an intermediate frequency circuit board, a multi-region board-level shielding cavity, a metal shielding shell, a radio frequency connector plug, and a power supply interface. The antenna circuit board is composed of two symmetrical antenna surfaces, and the central joint is interconnected with the frequency conversion circuit board; the frequency conversion circuit board not only has radio frequency interconnection with the antenna circuit board, but also has radio frequency interconnection and electrical interconnection with the intermediate frequency circuit board, and leaves There are two external interconnected RF connectors; the intermediate frequency circuit board provides the weight voltage ...
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The invention discloses a single-antenna high-isolation linear frequency modulation continuous wave radar antenna system, which comprises an antenna circuit board, a frequency conversion circuit board, an intermediate frequency circuit board, a multi-region board-level shielding cavity, a metal shielding shell, a radio frequency connector plug and a power supply interface, the antenna circuit board is composed of two symmetrical antenna surfaces, and the central joint is interconnected with the frequency conversion circuit board; the frequency conversion circuit board has radio frequency interconnection and electrical interconnection with the antenna circuit board and also has radio frequency interconnection and electrical interconnection with the intermediate frequency circuit board, andtwo external interconnection radio frequency connectors are reserved. The intermediate frequency circuit board provides a weight voltage for the frequency conversion circuit through analog signal operation. The power supply interface supplies power to the antenna system. The linear frequency modulation continuous wave radar speed measurement and distance measurement equipment can be miniaturized,and the measurement performance is improved.
Description
technical field [0001] The invention relates to a single-antenna high-isolation linear frequency modulation continuous wave radar antenna system, in particular to an improved radar antenna technology applied to the occasion of linear frequency modulation continuous wave radar speed measurement and distance measurement. Background technique [0002] Due to the continuous transmission of LFM continuous wave radar, the receiver will be interfered by the direct wave signal of the transmitter, so the transmission and reception isolation problem of this system radar is the first and urgent problem to be solved. [0003] In order to improve the isolation, the traditional linear frequency modulation continuous wave radar usually adopts the dual-antenna method with separate transmitting and receiving antennas. When the distance between the transmitting and receiving antennas is far enough, and corresponding absorbing and shielding measures are taken, the problem of transmitting and re...
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IPC IPC(8): H01Q1/52H01Q1/42H01Q1/48H01Q1/50H01Q23/00
CPCH01Q1/52H01Q23/00H01Q1/48H01Q1/50H01Q1/422
Inventor 胡运德闫科红
Owner BEIJING YOUHANG ELECTROMECHANICAL TECH