Ultra Wideband Teardrop Dipole Antenna

Abstract

The invention discloses an ultra-wideband teardrop-shaped dipole antenna, wherein metal radiation arms are symmetrically printed on the front face of an insulating medium plate; an interval is preset between the metal radiation arms; the two metal radiation arms adjacent to the interval are equipped with input ports respectively, and the input ports are taken as separate feed ends; a balance output end of an impedance converter is electrically connected to the feed ends of the two metal radiation arms respectively; an input end of the impedance converter is connected to one end of a coaxial connector; the other end of the coaxial connector is connected to a sender or a receiver of an ultra-wideband through-way radar; a metal shielding chamber is located right above the insulating medium plate; and the metal shielding chamber is filled with a wave-absorbing material. The antenna disclosed by the invention is characterized by a large working bandwidth, good time-domain radiation features, a small antenna volume, a compact structure and a smooth outline, etc. The antenna has the advantages that the feeding mode is simple; processing and maintenance are easy; and engineering demands of an ultra-wideband portable miniaturized radar system can be satisfied.

Description

technical field [0001] The invention belongs to the technical field of ultra-wideband through-wall radar antennas, and in particular relates to an ultra-wideband teardrop-shaped dipole antenna. Background technique [0002] Ultra-wideband penetrating wall radar is a new type of real-time imaging radar system that can detect and locate targets through partition walls. It can perform non-invasive imaging and tracking detection of people and internal structures in the object, and has the advantages of not damaging the detected wall, high detection resolution and high work efficiency. In recent years, with the continuous advancement of urbanization, my country's urban infrastructure construction, urban housing construction, industrial and energy base construction, and transportation facility construction have also developed rapidly. The use of ultra-wideband radar detection technology to investigate engineering hidden dangers has begun to gain widespread application. [0003] T...

AI Technical Summary

Problems solved by technology

Although the impedance-loaded butterfly antenna has good dielectric coupling characteristics and time-domain radiation waveform, its radiation efficiency is poor, which affects the actual detection range of the radar; the horn antenna and the Vivaldi antenna have poor near-ground coupling and have a large lateral The vertical size is not conducive to the miniaturization and integration of the system, and affects the application of the through-wall radar system in actual engineering

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