A Broadband Cavity Backed Planar Slot Array Antenna Based on Dielectric Integrated Waveguide

A dielectric integrated waveguide and slot array antenna technology, applied in the direction of slot antenna, antenna, antenna array, etc., can solve the problem of gain influence, and achieve the effect of easy integration, good radiation gain characteristics, and low profile characteristics

Active Publication Date: 2022-05-10
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

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  • A Broadband Cavity Backed Planar Slot Array Antenna Based on Dielectric Integrated Waveguide
  • A Broadband Cavity Backed Planar Slot Array Antenna Based on Dielectric Integrated Waveguide
  • A 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, which belongs to the technical field of antennas. The antenna is composed of a radiating structure and a feeding structure. The radiating structure is composed of 2 or 4 radiating units, and each radiating unit realizes the radiation of electromagnetic waves by opening slots on the upper metal plate of the dielectric integrated waveguide. The feed structure adopts microstrip line power divider with equal amplitude and same phase. In order to improve the impedance bandwidth and radiation gain, the radiation unit is provided with left-right symmetrical "亣"-shaped slots and inverted "eight"-shaped slots. The operating frequency of the antenna of the present invention is 9.0GHz. The 2-element array antenna achieves a relative bandwidth of 25.6%, and a gain of 10.1dBi. The 4-element array antenna achieves a relative bandwidth of 31.3%, and a gain of 12.9dBi. The invention has advantages in performance such as frequency band and gain, and is expected to be widely used in 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 Patents(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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