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Planar ultra-wideband ground penetrating radar antenna

A ground-penetrating radar and ultra-wideband technology, which is applied in antennas, resonant antennas, electrical short antennas, etc., can solve the problems of insufficient radar performance and insufficient effective working bandwidth of ordinary dipole antennas, and achieve increased bandwidth, expanded bandwidth, and improved The effect of detection accuracy

Active Publication Date: 2022-04-19
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the technical problems existing in the prior art, the present invention provides a planar ultra-wideband ground-penetrating radar antenna to solve the technical problem that ordinary dipole antennas usually have insufficient effective working bandwidth and cause insufficient radar performance

Method used

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  • Planar ultra-wideband ground penetrating radar antenna
  • Planar ultra-wideband ground penetrating radar antenna

Examples

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Embodiment

[0045] as attached Figure 1-2 As shown, this embodiment provides a planar ultra-wideband GPR antenna, an SMA radio frequency coaxial connector 1, a balun transformer 2, two stub units 3 and a dielectric substrate 4; the two stub units 3 are symmetrically arranged on the dielectric substrate 4, and are respectively located on both sides of the short-axis centerline of the dielectric substrate 4; a feeding gap is provided between the two branch units, and the feeding center coincides with the center of the dielectric substrate 4.

[0046] Both the SMA RF coaxial connector 1 and the balun transformer 2 are located at the feeding gap; the input end of the SMA RF coaxial connector 1 is connected to the signal source, and the output end of the SMA RF coaxial connector 1 is connected to the balun transformer 2 The input terminal is connected, and the output terminal of the balun transformer 2 is respectively connected with two branch units 3; in this embodiment, the balun transforme...

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Abstract

The invention discloses a planar ultra-wideband ground penetrating radar antenna, which comprises two branch units, the two branch units are symmetrically arranged on the upper surface of a dielectric substrate, and a feed gap is arranged between the two branch units; the feed structure is arranged at the feed gap, and the output end of the feed structure is connected with the two branch units respectively; the branch unit comprises two first branches, two second branches and a third branch which are arranged on the upper surface of the dielectric substrate; wherein the two first branches are arranged in parallel at an interval; the two second branches are arranged in parallel at an interval and are both located between the two first branches; the third branch knot is arranged between the two second branch knots; the lengths of the first branch knot, the second branch knot and the third branch knot are sequentially increased; the branch knots with different lengths are utilized to form a plurality of resonance points, so that the bandwidth is effectively expanded, the ultra wide band is realized, effective radiation of signals in a borehole radar system is ensured, and the performance of the radar system is improved.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a planar ultra-wideband ground-penetrating radar antenna. Background technique [0002] Borehole radar is a branch of ground penetrating radar. Its principle is to use the receiving antenna to receive the electromagnetic wave radiated by the transmitting antenna from the detection target, so as to receive the signal to analyze the underground situation; because of its high-resolution imaging capability, long detection distance and The structure is simple and widely used; now, drilling radar technology has been widely used in oil detection, geological survey and mineral deposit detection and other fields. [0003] As an important part of the ground penetrating radar system to send and receive signals, the antenna plays a key role in the detection performance of the entire system; for example, the effective working bandwidth of the antenna must be wide enough, the directional char...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q5/25H01Q5/50H01Q9/28G01V3/12
CPCH01Q1/50H01Q1/38H01Q5/25H01Q5/50H01Q9/285G01V3/12
Inventor 张安学王亚飞刘昌斌王力师振盛
Owner XI AN JIAOTONG UNIV
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