Broadband substrate integrated waveguide circularly polarized antenna

A technology of substrate integrated waveguide and circularly polarized antenna, which is applied in the field of communication, can solve the problem of low antenna unit gain and achieve the effects of fewer structural parameters, simple and convenient processing, and simple structure

Inactive Publication Date: 2014-01-08
XIDIAN UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 3. The gain of the antenna unit is low, and the maximum gain in the zenith direction is 6.63dBi

Method used

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  • Broadband substrate integrated waveguide circularly polarized antenna
  • Broadband substrate integrated waveguide circularly polarized antenna
  • Broadband substrate integrated waveguide circularly polarized antenna

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Embodiment Construction

[0025] The present invention is described in further detail below in conjunction with accompanying drawing:

[0026] Firstly, the antenna technical solution is described. Its structural top view is as figure 1 As shown, the antenna includes a dielectric substrate, a substrate-integrated waveguide cavity structure, a diamond-shaped annular slot, a coaxial feed port and a metallized via hole. In the substrate-integrated waveguide structure, the distance between the center of the diamond-shaped part of the via hole and the diamond-shaped gap is s1, the side length of the diamond-shaped part of the substrate-integrated waveguide is lr, the width of the rectangular-shaped part of the substrate-integrated waveguide is W, and the length is L. All metallized via holes The diameter and via spacing are d and p respectively, the side length of the diamond-shaped gap is ls, the width is ws, the width of the short-circuit part of the diamond-shaped gap is g2, the distance between the coax...

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Abstract

The invention discloses a broadband substrate integrated waveguide circularly polarized antenna. The broadband substrate integrated waveguide circularly polarized antenna comprises a substrate, wherein the substrate is provided with an upper metal layer and a lower metal layer, a rhombus annular structure is etched on the upper metal layer, part of the annular structure is grounded to form short circuit, a metallization via hole running through the upper metal layer and the lower metal layer is formed in the annular structure, a plurality of metallization via holes running through the upper metal layer and the lower metal layer are formed on the periphery of a seam, the metallization via holes are sequentially arrayed to form a substrate integrated waveguide cavity body, the final substrate integrated waveguide cavity body is constructed by a rectangular area and a rhombus area, and a coaxial feed structure is arranged in a proper position of the rectangular area of the substrate integrated waveguide cavity body. The broadband substrate integrated waveguide circularly polarized antenna has the advantages of high gain, wide broadband, good radiation characteristic, simple design, easiness in machining, low cost and the like. Compared with an existing substrate integrated waveguide circularly polarized antenna, the gain of the antenna disclosed by the invention is obviously improved, and the circularly polarized bandwidth is remarkably improved.

Description

Technical field: [0001] The invention belongs to the communication field, and relates to a high-gain circularly polarized antenna based on substrate integrated waveguide technology, in particular to a broadband substrate integrated waveguide circularly polarized antenna. Background technique: [0002] The antenna plays an important role in transmitting and receiving electromagnetic waves in the wireless communication system. In addition to effectively radiating or receiving electromagnetic waves, it is also responsible for converting high-frequency current (guided wave energy) into wireless electromagnetic waves or converting wireless electromagnetic waves into high-frequency currents. (guided wave energy) work. Undoubtedly, the antenna plays the most basic and indispensable role, and its performance will directly affect the quality of the entire communication system. [0003] With the development of communication technology, linear polarization is far from meeting the work...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/10H01Q1/38H01Q21/24
Inventor 樊芳芳王玮张天龄雷娟鄢泽洪
Owner XIDIAN UNIV
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