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Wideband Yagi aerial for half-mould substrate integrated waveguide feed

A technology of half-mode substrate integration and Yagi antenna, which is applied to the structural form of antenna, electrical components, and radiation elements, etc., can solve the problems of large volume and large loss of feeding structure, achieve good repeatability, increase gain, and simple design Effect

Inactive Publication Date: 2010-02-24
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Space Yagi array antennas are widely used in broadband communication systems. Due to their large size, they have gradually developed into printed Yagi array antennas. However, the feeding structure of millimeter-wave printed Yagi antennas has a large loss

Method used

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  • Wideband Yagi aerial for half-mould substrate integrated waveguide feed
  • Wideband Yagi aerial for half-mould substrate integrated waveguide feed
  • Wideband Yagi aerial for half-mould substrate integrated waveguide feed

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Embodiment Construction

[0020] The half-mode substrate integrated waveguide-fed broadband Yagi antenna of the present invention is realized on the microwave dielectric substrate through the printed circuit board technology. The half-mode substrate integrated waveguide structure is used as the feed structure to realize the transition from the coaxial line to the Yagi array antenna.

[0021] The broadband printed Yagi array antenna consists of a dielectric substrate, two layers of metal coatings covered on the upper and lower surfaces of the dielectric substrate and a row of metallized through holes; the metal coating on the upper surface includes 50 ohm microstrip lines, microstrip gradient lines, The upper metal surface, director, antenna element and parallel lines of the half-mode substrate integrated waveguide; the lower surface metal coating contains the ground surface metal layer of the half-mode substrate integrated waveguide and microstrip line, which is cross-symmetrical with the upper surface ...

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Abstract

The invention discloses a wideband Yagi aerial for half-mould substrate integrated waveguide feed, comprising a dielectric substrate which is provided with a metal coating on both sides. The structurecomprises a half-mould substrate integrated waveguide, a Yagi aerial, a micro-strip gradual-change transition wire and a 50 Ohm micro-strip output wire. The half-mould substrate integrated waveguidecomprises a metallic through hole, an upper metal coating and a lower metal coating. The Yagi aerial comprises a wave director, a cross feed source matrix of upper and lower surfaces, and parallel wires. For measuring conveniently, the micro-strip gradual-change transition wire is connected between the half-mould substrate integrated waveguide and the 50 Ohm micro-strip output wire. The half-mouldsubstrate integrated waveguide structure is used as the feeding structure of aerial, so the 180 DEG balanced line structure with a current phase difference of upper and lower metal surfaces is formedand can be directly connected to the Yagi aerial. For improving the plus, four wave directors are used to form a printed antenna structure, with wideband, high plus, low cost and low outline.

Description

technical field [0001] The invention is a broadband Yagi antenna design technology based on a novel feeding structure. The designed antenna has a working bandwidth of 22GHz-30GHz and a gain of 10dB. It includes two parts: a half-mode substrate integrated waveguide and a broadband Yagi antenna structure. By cascading the half-mode substrate integrated waveguide with the Yagi antenna, the waveguide structure feeds the Yagi antenna structure, forming a broadband antenna with simple feeding structure and wide operating bandwidth. The antenna design is based on planar printed circuit technology, which is small in size and suitable for planar high integration. Background technique [0002] With the rapid development of communication technology, broadband communication systems with many advantages such as low complexity, low cost, and wide operating bandwidth have been extensively researched and applied. The millimeter wave is an important and relatively late development of the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q19/30H01Q13/08
Inventor 洪伟翟国华蒯振起
Owner SOUTHEAST UNIV
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