Broadband cavity-backed planar slot array antenna based on dielectric integrated waveguide

A technology of dielectric integrated waveguide and slot array antenna, which is applied in the direction of slot antenna, antenna, antenna array, etc., can solve the problems of gain influence, etc., and achieve the effect of easy integration, good radiation gain characteristics, and simple structure

Active Publication Date: 2021-04-20
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Although this method can increase the bandwidth, its gain has been affected to a certain extent

Method used

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  • Broadband cavity-backed planar slot array antenna based on dielectric integrated waveguide
  • Broadband cavity-backed planar slot array antenna based on dielectric integrated waveguide
  • Broadband cavity-backed planar slot array antenna based on dielectric integrated waveguide

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Embodiment Construction

[0026] figure 1 The invention relates to a broadband cavity-backed planar slot array antenna structure based on a dielectric integrated waveguide. The antenna is composed of a radiating structure and a feeding structure; among them, the radiating structure is composed of 2 or 4 radiating units, and each radiating unit realizes the radiation of electromagnetic waves by opening a slot in the upper metal plate of the dielectric integrated waveguide; the feeding The structure adopts a microstrip power divider with equal amplitude and same phase to provide the same radio frequency energy to the radiation unit; the antenna structure includes from top to bottom: the first layer of metal sheet (1), the first layer of dielectric board (2), the second layer of Two layers of metal sheets (3), and metal holes (4); the first layer of metal sheets (1) of the radiating unit is provided with left-right symmetrical "亣"-shaped slots and inverted "eight"-shaped gaps Groove (8); the "亣" shaped g...

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Abstract

The invention discloses a broadband cavity-backed planar slot array antenna based on a dielectric integrated waveguide, and belongs to the technical field of antennas. The antenna is composed of a radiation structure and a feed structure. The radiation structure is composed of two or four radiation units, and each radiation unit achieves radiation of electromagnetic waves by forming slot grooves in an upper-layer metal plate of a dielectric integrated waveguide. And the feed structure adopts an equal-amplitude same-phase microstrip line power divider. In order to improve the impedance bandwidth and the radiation gain, the radiation unit is provided with a left-right symmetrical V-shaped slot and an inverted V-shaped slot. The working frequency of the antenna provided by the invention is 9.0 GHz. The relative bandwidth of the 2-unit array antenna is 25.6%, and the gain of the 2-unit array antenna is 10.1 dBi. The relative bandwidth of the 4-unit array antenna is 31.3%, and the gain of the 4-unit array antenna is 12.9 dBi. The antenna has the advantages in performance such as frequency band and gain, and is expected to be widely applied to wireless communication and radar systems.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to a broadband cavity-backed planar slot array antenna based on a dielectric integrated waveguide. Background technique [0002] With the rapid growth of communication requirements, the demand for high-quality wireless communication systems is becoming more and more intense, which drives the development of a new generation of wireless communication systems. In recent years, in order to meet the needs of wireless communication systems, low-profile broadband array antennas have attracted attention. Early traditional waveguide slot antennas have the advantages of high power capacity and low insertion loss and can be applied, but they have the disadvantages of large size, high cost and low flexibility, which limit their further promotion. On the other hand, the microstrip line is made by traditional PCB technology, which has small volume and low profile, but it has high ohmic loss and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/10H01Q1/36H01Q1/50H01Q1/38H01Q21/00
Inventor 王敏莫东升莫雨鑫邓集杰杨汇锋单坤洋黎靖宇刘忠源
Owner CHONGQING UNIV OF POSTS & TELECOMM
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