A Broadband Endfire Antenna Based on Surface Wave Guide and High Impedance Surface

A high-impedance surface and end-fire antenna technology, which is applied in the direction of separately powered antenna array, antenna grounding device, antenna grounding switch structure connection, etc., can solve the problems of high antenna design complexity, broadband implementation obstacles, etc., and achieve good radiation buff effect

Active Publication Date: 2019-10-08
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

However, the high design complexity and wideband implementation of this antenna have become obstacles in its practical application

Method used

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  • A Broadband Endfire Antenna Based on Surface Wave Guide and High Impedance Surface
  • A Broadband Endfire Antenna Based on Surface Wave Guide and High Impedance Surface
  • A Broadband Endfire Antenna Based on Surface Wave Guide and High Impedance Surface

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Embodiment Construction

[0030] The technical solution of the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0031] This embodiment provides a broadband end-fire planar antenna based on surface wave guides and high-impedance surfaces, and its side view is as follows figure 1As shown, it is possible to achieve a wide impedance bandwidth (center relative bandwidth is 33.5%) while ensuring good far-field end-fire performance, including the first dielectric substrate 1, the second dielectric substrate 2, the surface wave waveguide part, the high impedance The surface part and the surface wave exciter part, the first dielectric substrate 1 is arranged above the second dielectric substrate 2, the surface wave waveguide part includes an upper rectangular patch array 3 and a lower rectangular patch array 4, the upper layer The rectang...

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Abstract

The present invention relates to the technical field of microwave antennas, in particular to a broadband end-fire antenna based on surface wave guides and high-impedance surfaces, including a first dielectric substrate, a second dielectric substrate, a surface-wave waveguide part, a high-impedance surface part, and a surface-wave excitation device part. The planar end-fire antenna of the present invention realizes the end-fire effect by using the conduction and suppression functions of the surface wave waveguide and the high-impedance surface respectively for surface waves, and has characteristics such as good radiation gain, front-to-back ratio, and gain flatness; the present invention can stimulate The two resonant modes in the surface wave waveguide adopt a high-impedance surface with wide stopband characteristics to realize the broadband function of the end-fire antenna, and the relative center bandwidth reaches 33.5%; the invention realizes the end-fire radiation performance of the panel antenna And broadband impedance bandwidth function, simple structure, easy implementation and integration, can effectively enhance the performance of antennas in applications such as radar, communication, remote sensing and telemetry, and electronic countermeasures.

Description

technical field [0001] The invention relates to the technical field of microwave antennas, in particular to a broadband end-fire antenna based on surface wave guides and high-impedance surfaces. Background technique [0002] Due to the advantages of strong directivity and high gain, flat-panel end-fire antennas have shown good performance and played an important role in contemporary military and civilian applications. Traditional flat-panel end-fire antennas mainly include flat-panel dipole arrays, Yagi dipole arrays, log-periodic dipole arrays, Vivaldi antennas, and other designs. These designs are either because of their narrow impedance bandwidth or because of their The flatness of the radiation gain within the bandwidth is poor, and it is often subject to many restrictions in practical applications. Therefore, widening the impedance bandwidth of the antenna and ensuring the flatness of the gain within the bandwidth is a difficult point in the research and design of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q21/06
Inventor 程友峰丁霄廖成
Owner SOUTHWEST JIAOTONG UNIV
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