Dual-band multi-polarization common-caliber waveguide slot antenna

A waveguide slot antenna and vertically polarized antenna technology is applied in slot antennas, antennas, and devices that make antennas work in different frequency bands at the same time, which can solve the problems of low antenna efficiency, high cross-polarization, and low isolation, and achieve High power capacity, low cross-polarization, weight reduction effect
CN104577347AActive Publication Date: 2015-04-29CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
Publication Date
2015-04-29

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Abstract

The invention relates to a dual-band multi-polarization common-caliber waveguide slot antenna which comprises an L-band vertical polarization antenna, a C-band vertical polarization antenna and a C-band horizontal polarization antenna, which are equal in length and are waveguide slot antennas. The C-band vertical polarization antenna and the C-band horizontal polarization antenna form a C-band dual-polarization antenna array which is positioned at the upper part, and the L-band vertical polarization antenna is positioned at the lower part; the L-band vertical polarization antenna, the C-band vertical polarization antenna and the C-band horizontal polarization antenna feed at an antenna waveguide tube center through a coaxial connector, and the coaxial connector and a waveguide tube form a 3dB power divider. The exciting effect on the L-band vertical polarization antenna, the C-band vertical polarization antenna and the C-band horizontal polarization antenna is realized. The dual-band multi-polarization common-caliber waveguide slot antenna realizes sharing of a plurality of waveguide slot antennas on the same physical caliber area. Compared with a dual-band multi-polarization micro-strip common-caliber antenna, the antenna has the advantages of being high in efficiency, high in polarization isolation, low in cross polarization and high in power capacity.
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Description

technical field

[0001] The invention belongs to the technical field of antennas, in particular to a dual-band multi-polarization common-aperture antenna, in particular to a dual-frequency band multi-polarization common-aperture antenna composed of three metal radiation waveguides. The invention can be used for both reception and transmission of radio waves. In military terms, it can be used as a terminal antenna for phased array radar systems. In civilian use, it can be used as a spaceborne radar antenna, weather radar antenna, etc. Background technique

[0002] With the rapid development of applications and demands, on the one hand, there are more and more electronic devices working at various frequencies; , Efficiency and other electrical performance indicators have put forward more and more stringent requirements, especially in the radar system, the antenna occupies a large proportion, so it is necessary to reduce the weight, compress the profile, improve the antenna ef...

Claims

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