Broadband substrate integrated waveguide double-slit antenna

A substrate-integrated waveguide and double-slot antenna technology, applied in slot antennas, antennas, antenna arrays, etc., can solve problems that need to be improved, increase the working bandwidth of radar antennas, etc., and achieve easy chip integration, low processing cost, and convenient production Effect

Inactive Publication Date: 2019-11-08
HUIZHOU DESAY SV INTELLIGENT TRANSPORTATION TECH INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the prior art, in order to improve the working bandwidth of the radar antenna, the traditional broadband substrate integrated waveguide is mostly used for design, and the solution of the traditional broadband substrate integrated waveguide analysis antenna is to use short-circuit pins for impedance matching, and to design multi-mode working Single-slot substrate integrated waveguide slot antenna array, which increases the working bandwidth of radar antenna to a certain extent, but still needs to be improved

Method used

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  • Broadband substrate integrated waveguide double-slit antenna

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Embodiment Construction

[0023] In order to facilitate the understanding of those skilled in the art, the present invention will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0024] Such as figure 1 As shown, a broadband substrate integrated waveguide double-slot antenna, the double-slot antenna includes a line array structure composed of m×2 radiators (2, 3) connected in series, and each 2 radiators (2, 3) is One column constitutes a radiation unit 1, and each radiation unit 1 includes two radiators (2, 3) of a long oscillator 2 and a short oscillator 3, both of which are substrate-integrated waveguide slot oscillators. Two adjacent radiating units 1 are connected through the substrate integrated waveguide feeder 4, and the lengths of the radiating bodies (2, 3) at corresponding positions in the linear array structure gradually decrease from the middle to both sides, and each phase The distance from the radiator (2, 3) at the corresponding...

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Abstract

The invention relates to a broadband substrate integrated waveguide double-slit antenna suitable for a 77 GHz and 79 GHz onboard millimeter wave radar and comprising a linear array structure composedof m*2 radiators connected in series, wherein every two radiators are arranged in one column to form a radiation unit; the sizes of the radiators at respective corresponding positions in the linear array gradually decrease from the middle to both sides, and m is a natural number greater than zero. The sidelobe level of the broadband substrate integrated waveguide double-slit antenna of the invention is easy to control. The broadband substrate integrated waveguide double-slit antenna has a large working bandwidth range, has good gain and direction consistency in the working bandwidth, and is convenient to process and low in cost.

Description

technical field [0001] The invention relates to the technical field of radar antennas, in particular to a broadband substrate integrated waveguide double-slot antenna. Background technique [0002] As one of the most important sensors in automotive ADAS systems, millimeter-wave radar has the characteristics of strong ability to penetrate fog, smoke, and dust, and can work around the clock. In pursuit of high vehicle safety, radar has been widely used. [0003] The bandwidth of 24GHz automotive millimeter-wave radar is usually less than 200MHz, the accuracy is only 75cm, and the target separation ability is only 1.5m. The ultra-wideband 24GHz millimeter-wave radar that appeared later has a bandwidth of up to 7GHz and an accuracy of 2.2 cm; but it has an obvious disadvantage, that is, the maximum detection distance of a typical 24GHz ultra-wideband millimeter-wave radar is about 30 meters. [0004] Under the premise of ensuring the range measurement of millimeter-wave radar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/32H01Q1/36H01Q1/50H01Q13/10H01Q21/00H01Q21/06H01Q21/08
CPCH01Q1/3233H01Q1/36H01Q1/50H01Q13/10H01Q21/0006H01Q21/064H01Q21/08
Inventor 李权孙靖虎王昆鹏曾迪翟晓敏
Owner HUIZHOU DESAY SV INTELLIGENT TRANSPORTATION TECH INST CO LTD
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