Anti-symmetric Vivaldi ground penetrating radar antenna

A ground-penetrating radar, anti-symmetric technology, applied in the direction of antenna support/installation device, radiation element structure, etc., can solve the problems of low frequency, large antenna size, insufficient resolution, etc., and achieve high antenna gain and low echo Loss, good directivity effect

Inactive Publication Date: 2015-08-19
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the large size of the antenna, low frequency, insufficient resolution, and the lack of ultra-bandwidth requirements of step-frequency ground-penetrating radar, such products cannot be directly applied to the field of non-destructive testing of grouting behind the shield tunnel wall

Method used

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  • Anti-symmetric Vivaldi ground penetrating radar antenna
  • Anti-symmetric Vivaldi ground penetrating radar antenna
  • Anti-symmetric Vivaldi ground penetrating radar antenna

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0028] like figure 1 , figure 2 As shown, a kind of anti-symmetrical Vivaldi ground-penetrating radar antenna includes a double-sided printed circuit board and a microstrip line 1 located on the printed circuit board. The printed circuit board is a dielectric substrate 8 with a metal conductive layer on both sides, and the printed circuit board The upper and lower surfaces of the board are respectively provided with a copper sheet in the shape of a lung lobe as two antenna poles, namely figure 1 , figure 2 In the upper surface pole 6 and the lower surface pole 7, the inner area o...

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Abstract

The invention relates to an anti-symmetric Vivaldi ground penetrating radar antenna. The anti-symmetric Vivaldi ground penetrating radar antenna comprises a double-surface printed circuit board and a microstrip line arranged on the printed circuit board, the upper surface and the lower surface of the printed circuit board are respectively provided with a lung-lobe-shaped antenna pole in an etched manner, the two antenna poles are arranged in symmetry, an edge of each antenna pole comprises a straight line, a first index gradient curve, a semi-elliptical curve, and a second index gradient curve connected in sequence, end parts of the antenna poles formed by the straight lines and the second index gradient curves are connected with the microstrip line to form a closed loop, and the central frequency of 450 MHz, 470 MHz, or 500 MHz is provided. Compared with the prior art, the anti-symmetric Vivaldi ground penetrating radar antenna is advantaged by ultra wide band and high antenna gain etc., the requirements of the detection distance and the resolution can be satisfied, and the anti-symmetric Vivaldi ground penetrating radar antenna is applicable to nondestructive tests of shield tunnels.

Description

technical field [0001] The invention relates to the design field of ground radar antennas, in particular to an antisymmetric Vivaldi ground penetrating radar antenna. Background technique [0002] In recent years, the in-depth development of urban functions has gradually turned into large-scale and deep-level development and utilization of underground space. Vigorously developing urban underground space and rail transit systems is the most effective way to solve "urban diseases" in my country. The shield method is a construction method that uses shield machines to dig tunnels below the ground. With the completion and operation of a large number of shield tunnels, due to the influence of construction conditions, construction quality, geological conditions, protection area construction and other factors, some structural diseases have appeared in shield tunnels. How to control the increasing number of tunnel diseases And taking corresponding measures to ensure operational safe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/22
Inventor 谢雄耀王志高洪概覃辉曾昆
Owner TONGJI UNIV
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