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Implementation method and structure of wideband high-gain wide beam oblique polarization horn antenna

A technology of a horn antenna and an implementation method, which is applied in the directions of waveguide horns, antennas, electrical components, etc., can solve the problems of large aperture size and limited application range of radial mode antennas, and achieve the effect of aperture size compression.

Active Publication Date: 2019-04-23
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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Problems solved by technology

The large aperture size of the radial mode horn antenna limits its application range

Method used

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  • Implementation method and structure of wideband high-gain wide beam oblique polarization horn antenna
  • Implementation method and structure of wideband high-gain wide beam oblique polarization horn antenna

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] A method for realizing a broadband high-gain wide-beam obliquely polarized horn antenna, comprising the following process:

[0019] The E-plane double-ridge waveguide is used to excite the four-ridge horn to obtain wide beam characteristics, and the E-plane radial field distribution is formed on the four-ridge horn mouth surface; the broadband characteristics of the double-ridge waveguide and the four-ridge waveguide realize the broadband of the antenna. This combination design The advantage of the method is that the physical size of the antenna is effectively compressed.

[0020] A semicircular metal sheet is placed on the four-ridge horn waveguide mouth to shape the wide beam of the antenna; to ensure that the antenna has a radiation characteristic similar to that of the radial mode horn antenna, so that the beam of the antenna is consistent within the frequen...

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Abstract

The invention relates to the technical fields of electromagnetic fields and microwaves, in particular to an implementation method of a wideband high-gain wide beam oblique polarization horn antenna. The method includes the following steps of: using an E-surface dual-ridged guided wave to excite a four-ridged horn to obtain a wide beam, and forming E-surface radial field distribution at the four-ridged horn mouth surface; arranging a semi-circular metal piece at the four-ridged horn mouth surface to perform shaping of the antenna wide beam; arranging an oblique polarizer at the antenna mouth surface to achieve polarization torsion. The method of E-surface dual-ridged guided wave exciting the four-ridged horn and the semi-circular metal piece performing shaping in a direction map is employedto achieve the miniaturization problem of the radial mode horn to allow the horn antenna radiation direction map to be close to the radial mode horn, reduce the mouth diameter for 40% and allow the bandwidth to be 3:1. The gain is not smaller than 3dB in the range from -45 degrees to 45 degrees on the azimuth plane. The present invention further discloses a structure of a wideband high-gain widebeam oblique polarization horn antenna.

Description

technical field [0001] The invention relates to the field of electromagnetic field and microwave technology, in particular to a method and structure for realizing a wide-band high-gain wide-beam obliquely polarized horn antenna. Background technique [0002] Broadband, high-gain, and wide-beam obliquely polarized horn antennas are currently mostly implemented with radial mode horns and oblique polarizers. The radial mode horn is an antenna form composed of an E-plane narrow-aperture waveguide and a radial waveguide. The diameter of the radial section of the radial mode horn is usually larger than 2 wavelengths. The large aperture size of the radial modulus horn antenna restricts its application range. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a realization method and structure of a wide-band high-gain wide-beam obliquely polarized horn antenna for the above-mentioned existing problems. [0004] The techn...

Claims

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Application Information

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IPC IPC(8): H01Q13/02H01Q15/24H01Q19/08
CPCH01Q13/0275H01Q15/242H01Q19/08
Inventor 何清明何亚东鞠靖煜李智于伟
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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