Time-domain ultra-wideband tem horn antenna for ground penetrating radar
A technology of ground penetrating radar and horn antenna, applied in the field of radar, can solve the problems of large size, limited bandwidth, low center frequency, etc., and achieve the effects of extending the current distribution path, good waveform fidelity, and good broadband characteristics
Active Publication Date: 2021-12-24
INST OF ELECTRONICS CHINESE ACAD OF SCI
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Problems solved by technology
At present, ground penetrating radar antennas are mainly butterfly antennas. This kind of antenna has narrow bandwidth, low center frequency, limited transmission energy, and low efficiency. , has a relatively low signal-to-noise ratio, and at the same time has a large size, which is not conducive to the engineering application of radar systems
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[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0040] It should be noted that, in the drawings or descriptions of the specification, similar or identical parts all use the same figure numbers. Implementations not shown or described in the accompanying drawings are forms known to those of ordinary skill in the art. Additionally, while illustrations of parameters including particular values may be provided herein, it should be understood that the parameters need not be exactly equal to the corresponding values, but rather may approximate the corresponding values within acceptable error margins or design constraints. In addition, the directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only re...
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The invention provides a time-domain ultra-wideband TEM horn antenna for ground-penetrating radar, comprising: a radiating arm, which includes an upper radiating arm and a lower radiating arm symmetrically arranged with the upper radiating arm; the upper and lower radiating arms The profile is parabolic or exponential function curve; a plurality of extension surfaces are respectively set at one end of the upper radiating arm and the lower radiating arm; a feed balun is set at the other end of the upper radiating arm and the lower radiating arm , for coaxial feed. The time-domain ultra-wideband TEM horn antenna for ground penetrating radar provided by the present invention has a small overall size, high gain, good waveform fidelity, good broadband characteristics, and ultra-wideband characteristics, which meet the requirements of the system for detection distance and accuracy. requirements.
Description
technical field [0001] The invention relates to the technical field of radar, in particular to a time-domain ultra-wideband TEM horn antenna for ground-penetrating radar. Background technique [0002] Ground Penetrating Radar (GPR) is a fast, efficient and non-destructive physical method for detection. Ground penetrating radar uses one transmitting antenna to transmit high-frequency electromagnetic waves, and the other antenna receives reflected waves from the interface of the underground target medium, and then analyzes and processes the acquired data to obtain the distribution status of underground targets. Among them, the radar antenna is the most critical component in the ground penetrating radar system. The performance of the antenna greatly affects the performance of the ground penetrating radar and the depth and detection accuracy of target detection. At present, ground penetrating radar antennas are mainly butterfly antennas. This kind of antenna has narrow bandwidt...
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IPC IPC(8): H01Q13/02H01Q1/36H01Q1/50
CPCH01Q1/36H01Q1/50H01Q13/02
Inventor 叶盛波尹德张经纬纪奕才刘小军
Owner INST OF ELECTRONICS CHINESE ACAD OF SCI