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Broadband low-profile miniaturized AMC cavity monopole antenna

A monopole antenna, low-profile technology, applied to antennas, resonant antennas, devices that make antennas work in different frequency bands at the same time, etc., can solve the problems of complex design or processing, narrow bandwidth, and inability to meet the requirements of antenna broadband, etc. To achieve the effect of simple processing and design, widening bandwidth, and realizing light weight

Active Publication Date: 2022-04-19
XIDIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The bandwidth of the traditional AMC structure is narrow, generally about 10%, which cannot meet the broadband requirements of the antenna. Many new AMC structures can widen the bandwidth of the AMC, but the design or processing is complicated

Method used

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  • Broadband low-profile miniaturized AMC cavity monopole antenna
  • Broadband low-profile miniaturized AMC cavity monopole antenna
  • Broadband low-profile miniaturized AMC cavity monopole antenna

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Embodiment Construction

[0052] 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. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0053] A kind of broadband low-profile miniaturized AMC cavity monopole antenna proposed by the present invention includes five parts: monopole antenna, parasitic structure, broadband AMC structure, metal cavity and feeding coaxial line; said monopole antenna The whole is in the shape of a square ring, with one corner cut flat on the outside, installed on the side wall of the cavity, and placed flush with th...

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Abstract

The broadband low-profile miniaturized AMC cavity monopole antenna comprises a monopole antenna body, parasitic structures, a broadband AMC structure and a metal cavity, the monopole antenna body is installed on the side wall of the cavity, the parasitic structures are located on the two sides of the monopole antenna body and are flush with the opening face of the cavity, and the broadband AMC structure is a square patch type AMC structure with an air layer. The dielectric substrate is located between the monopole antenna and the bottom surface of the cavity, a square array is printed on the dielectric substrate, and an air layer is arranged between the dielectric substrate and the bottom surface of the cavity. According to the invention, the monopole and the parasitic structure are placed on the side wall of the cavity, so that wide beam coverage in the broadband of the antenna is realized, the space of the cavity is effectively utilized, and miniaturization and light weight of the antenna are realized; moreover, based on the broadband AMC structure, the profile of the antenna is reduced by 40% under the condition of keeping 32% bandwidth of the cavity monopole antenna, and the whole antenna has good impedance and radiation characteristics in a small-size cavity.

Description

technical field [0001] The invention relates to the field of cavity antennas in a cavity with a broadband low profile and a small size, in particular to a broadband low profile miniaturized cavity monopole antenna based on an AMC (artificial magnetic conductor) structure. Background technique [0002] In broadband detection and positioning, the antenna is required to have a wide beam, medium gain, and suitable pattern coverage, and at the same time, it is hoped that the antenna will be miniaturized and lightweight under the requirements of electrical performance. The cavity antenna has become a new antenna form choice because of its advantages such as high gain, stable pattern, and small backlobe radiation. According to the form of the excitation source, cavity antennas can be divided into dipole cavity antennas, monopole cavity antennas, helical cavity antennas, and slot cavity antennas. The cavity size of the cavity antenna is usually larger, around one wavelength. Howev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q9/30H01Q1/36H01Q5/50
CPCH01Q9/30H01Q1/36H01Q5/50
Inventor 雷娟黄磊侯雅静汪俊孔玉吴松陈士举
Owner XIDIAN UNIV
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