A Broadband SIW Cavity-Backed Slot Antenna Array Using L-shaped Slot Elements

A technology for slot antennas and antenna arrays, which is applied in directions such as antenna arrays, antenna arrays, and slot antennas that are energized separately, can solve problems such as limited processing accuracy and impracticality, achieve low cross-polarization levels, reduce influence, and facilitate integrated effect

Active Publication Date: 2020-09-11
SOUTHEAST UNIV
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Problems solved by technology

However, because the millimeter-wave vehicle-mounted radar system has relatively strict specifications for its antenna array, and is limited by factors such as processing accuracy, many methods to improve antenna performance are not practical.

Method used

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  • A Broadband SIW Cavity-Backed Slot Antenna Array Using L-shaped Slot Elements
  • A Broadband SIW Cavity-Backed Slot Antenna Array Using L-shaped Slot Elements
  • A Broadband SIW Cavity-Backed Slot Antenna Array Using L-shaped Slot Elements

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Embodiment Construction

[0030] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0031] A wide-band substrate integrated waveguide cavity-backed slot antenna array using L-shaped slot units disclosed in the embodiment of the present invention mainly includes several SIW cavity-backed slot antenna units and a parallel-fed power dividing network. connected to the WR10 test structure. The SIW cavity-backed slot antenna unit is a double-layer structure, including the upper SIW cavity-backed slot radiation layer and the lower SIW feed layer; the L-shaped slot is set on the upper su...

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Abstract

The invention discloses a broadband substrate integrated waveguide (SIW) back cavity slot antenna array adopting an L-shaped slot unit. The antenna array comprises a parallel feed type power divisionnetwork and a plurality of SIW back cavity slot antenna units, each antenna unit is mainly composed of an SIW rectangular resonant cavity and two pairs of L-shaped slot pairs rotationally symmetricalrelative to the center of the resonant cavity, and two L-shaped slots of each of L-shaped slot pairs are arranged face to face. By designing the positions of metalized through holes and metalized blind holes, each antenna unit forms a rectangular SIW isolation cavity with an open long side in a dielectric bonding layer, and the influence of an electromagnetic field leaked in the bonding layer on an antenna array directional diagram and gain is remarkably reduced. The antenna array realized by the invention has the characteristics of wide directional diagram bandwidth, flat in-band gain, narrowbeams in both an azimuth plane and a pitch plane, and low cross polarization electrical level.

Description

technical field [0001] The invention relates to a broadband cavity-backed slot antenna array based on a substrate integrated waveguide (Substrate Integrated Waveguide, SIW) technology and adopting a novel L-shaped slot unit, belonging to the technical field of antennas. Background technique [0002] With the increasing demand for driving safety and automatic driving, the application prospect of millimeter wave vehicle radar is very broad. As a key component of the millimeter-wave vehicle radar system, the performance of the antenna array directly affects the detection range, detection angle, anti-interference ability and resolution of the radar system. [0003] In recent years, the industry's research on millimeter-wave vehicle-mounted radar has become increasingly in-depth, and the antenna array of its radar system has also begun to develop in the direction of multi-function, broadband, and high gain. However, because the millimeter-wave vehicle-mounted radar system has re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q21/06H01Q21/00H01Q13/18H01Q1/50H01Q1/38H01Q1/32
Inventor 王海明谢家豪无奇余晨洪伟
Owner SOUTHEAST UNIV
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