An Ultra-Wideband Pulse Radiating Antenna Using a Planar Asymptotic Conical Feed Arm

Abstract

The invention relates to an ultra-wideband pulse radiation antenna using a plane asymptotic conical feed arm, belonging to the field of electronic science and technology. Including metal floor, semi-paraboloid, closed inverted M-shaped bracket, printed board structure feed arm, feed arm end bracket and metal floor of radio frequency cable socket; the semi-parabolic surface is located on the metal floor; the closed inverted M-shaped bracket is located Above the metal floor; the printed board structure feed arm is located in the V-shaped groove of the closed inverted M-shaped bracket; the feed arm end bracket is located between the printed board structure feed arm end and the edge of the semi-parabolic surface, The end of the structural feed arm is fixed on a semi-parabolic surface; the radio frequency cable socket is placed on the lower surface of the metal floor. The antenna designed by the invention can realize the impedance bandwidth of 40 frequency multipliers without impedance transformation balun, has simple feeding structure and stable performance, and meets the requirements of the ultra-wideband pulse radiation antenna on impedance bandwidth and radiation performance.

Description

technical field [0001] The invention belongs to the field of electronic science and technology, and particularly provides an ultra-wideband pulse radiation antenna using a plane asymptotic conical feeding arm. It can be used for mobile platforms such as vehicle and ship. Background technique [0002] The traditional reflector antenna converts the TEM spherical wave emitted by the feed source into a plane wave, so as to have a higher gain in the far region. The working principle of the ultra-wideband pulse radiation antenna is different from that of the traditional reflector antenna: for the high-frequency component of the pulse signal, a large-diameter reflector is used to obtain high-gain radiation; for the low-frequency component of the pulse signal, the feed arm and the The magnetic dipole loop composed of paraboloids and the electric dipoles formed by the feed arm form a combined oscillator. When the combined oscillator reaches a certain condition, it presents a cardioi...

AI Technical Summary

Problems solved by technology

[0005] The existing reflector UWB pulse antenna has a large input impedance. In order to solve the problem that the traditional UWB pulse radiation antenna has too much impedance and the aperture efficiency deteriorates with the change of frequency, the present invention proposes a new type of planar asymptotic conical The feed arm form, its characteristic impedance is half of the traditional feed arm, about 100 ohms. In order to directly match the 50 ohm pulse source, it is further improved into a semi-parabolic ultra-wideband pulse antenna by using the mirror image principle. This design saves The traditional ultra-wideband impedance transformation balun structure is greatly reduced, which greatly reduces the design complexity and manufacturing difficulty of the antenna

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