Bipolar feed source device and antenna

A dual-polarization and feed technology, which is applied to antennas, electrical components, waveguide horns, etc., can solve the problem that dual-polarized feeds cannot satisfy low voltage standing wave ratio and high cross-polarization discrimination rate at the same time. Requirements for low voltage standing wave ratio and high cross-polarization discrimination rate, and the effect of small mouth masking

Inactive Publication Date: 2009-10-21
MOBILE ANTENNA TECH SHENZHEN
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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a dual-polarization feed device, which aims to solve the problem that the existing dual-polarization feed cannot simultaneously satisfy low voltage standing wave ratio and high cross-polarization discrimination rate

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] The dual-polarization feed device provided by the embodiment of the present invention adopts a waveguide-type polarization rotator, and combines the circular-moment transition unit to place the feed waveguides of the two input ports on the same plane, thereby realizing a smaller-sized excitation cavity and Smaller orifice-face occlusion meets the requirements of low voltage standing wave ratio and high cross-polarization discrimination rate at the same time.

[0024] The dual-polarization feed device provided by the embodiment of the present invention is mainly used in microwave communicatio...

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Abstract

The invention is applicable to the field of an antenna and provides a bipolar feed source device and an antenna. The bipolar feed source device comprises a feed source horn, a round waveguide, a round-rectangle transition unit, a polarization rotating joint and a second input port that are connected sequentially, a pin unit arranged on the central axis line of the round waveguide and a first input port which is electrically connected with the round waveguide feed; the polarization rotating joint is a wave guide with a sharp angle in the polarization direction; the polarization rotating joint arranges the feed waveguide of the first input port and the feed waveguide of the second input port in the same plane by the round-rectangle transition unit. The bipolar feed source device adopts the waveguide-type polarization rotating joint, arranges the feed waveguides of two input ports in the same plane by the round-rectangle transition unit, realizes the excitation chamber of small size and small hole surface shielding and meets the requirements of low voltage standing wave ratio and high cross polarization discrimination rate simultaneously.

Description

technical field [0001] The invention belongs to the field of antennas, in particular to a dual-polarization feed device and an antenna. Background technique [0002] In order to meet the requirements of frequency reuse, the feed-forward dual-polarization feed device must have a cross-polarization discrimination rate better than -30dB. The waveguides are perpendicular to each other, and one of the waveguides must have a wider side that will greatly shield the radiation port of the antenna, which will adversely affect the gain and pattern of the antenna. Therefore, the dual-polarized feed device generally adopts a polarization-rotating structure, so that the feed waveguides of the two ports are placed on the same plane, thereby reducing the shielding of the antenna face; at the same time, a suitable feed horn can also effectively Reduce the shielding area of ​​the feed source and optimize the radiation pattern. [0003] The dual orthogonalizer used in the existing dual-polar...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/02H01Q19/13
Inventor 赵李刚
Owner MOBILE ANTENNA TECH SHENZHEN
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