Broadband substrate integrated waveguide circularly polarized antenna array and manufacturing method thereof

A substrate-integrated waveguide and circularly polarized antenna technology, applied in the field of communication, can solve the problems of increased debugging complexity, low gain of antenna units and arrays, and achieve shortened design and optimization time, reduced volume, and simple and convenient processing Effect

Inactive Publication Date: 2014-01-22
XIDIAN UNIV
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Problems solved by technology

[0009] 2. A row of vias are used for impedance matching debugging near the coaxial feed, which increases the complexity of debugging, and the final bandwidth of the antenna unit is only 6%.
[0011] 4. The gain of the antenna unit is only 6.63dBi, and the gain of the 4-element array is only 10.9dBi, and the gain of the antenna unit and array is relatively low

Method used

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  • Broadband substrate integrated waveguide circularly polarized antenna array and manufacturing method thereof
  • Broadband substrate integrated waveguide circularly polarized antenna array and manufacturing method thereof
  • Broadband substrate integrated waveguide circularly polarized antenna array and manufacturing method thereof

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Embodiment Construction

[0033] The present invention is described in further detail below in conjunction with accompanying drawing:

[0034] The substrate integrated waveguide antenna of the present invention includes an antenna unit and an array.

[0035] First, the technical scheme of the antenna unit is described. Its structural top view is as figure 1As 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 sl, the side length of the rhombus-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 hole spacing are d and p respectively, the side length of the diamond-shaped s...

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Abstract

The invention discloses a substrate integrated waveguide technology-based high-gain circularly polarized antenna array and a manufacturing method of the antenna array. The broadband substrate integrated waveguide circularly polarized antenna array comprises an upper-layer radiation substrate and a lower-layer feed substrate, wherein the radiation substrate comprises a first antenna unit, a second antenna unit, a third antenna unit and a fourth antenna unit, and the first antenna unit, the second antenna unit, the third antenna unit and the fourth antenna unit are symmetrically arranged by taking the center of a circle as an axis; a radial substrate integrated waveguide power distributor which is divided into four parts is distributed on the feed substrate and is used for feeding the four antenna units. The high-gain circularly polarized antenna array disclosed by the invention has the advantages that the gain is high, the broadband is wide, the radiation characteristic is good, the design is simple, the machining is easy and the cost is low; compared with the current substrate integrated waveguide circularly polarized antenna, the antenna provided by the invention has the advantages that the gain is remarkably improved and the circularly polarized bandwidth is remarkably increased.

Description

Technical field: [0001] The invention belongs to the communication field, and relates to a high-gain circularly polarized antenna array based on substrate integrated waveguide technology, in particular to a broadband substrate integrated waveguide circularly polarized antenna array and a preparation method thereof. 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, lin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q21/00H01Q1/38
Inventor 樊芳芳王玮张天龄雷娟鄢泽洪
Owner XIDIAN UNIV
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