Tree-shaped access different-plane delay line pair Vivaldi impulse antenna

Abstract

The invention discloses a tree-shaped access different-plane delay line pair Vivaldi impulse antenna. The antenna consists of antipodal radiating pasters (1), a microstrip feeder (2), tree-shaped access lines (3), delay lines (4) and a medium substrate (5), wherein the two antipodal radiating pasters (1) are positioned on two surfaces of the medium substrate (5) respectively, edges (6) of the two pasters (1) are open so as to form a flared opening, and an antenna radiation tail end (7) is formed at the maximum opening positions at the tail ends of the radiating pasters (1); an antenna transmission section (8) is arranged along another direction of the opening; one end of the microstrip feeder (2) is a feeding end (11) and the other end of the microstrip feeder (2) is connected with the transmission section (8); the tree-shaped access line (3) and the delay line (4) of each paster (1) are arranged on the rear side of the medium substrate (5); branches of each area access line (3) are converged at a convergent point (13), and tail ends of the branches are connected with the tail end (7) through metallized via holes (12); and one end of each of the delay lines (4) is connected with the convergent point (13) and the other end of each of the delay lines (4) is open-circuit. The antenna can delay the occurrence time of trailing pulse.

Description

technical field [0001] The patent of the present invention relates to a pulse antenna, especially a tree-shaped access delay line antipodal Vivaldi pulse antenna, which belongs to the field of pulse antenna manufacture. Background technique [0002] When the pulse antenna radiates a pulse signal, during the period when the pulse current flows from the antenna input terminal to the antenna end, if the pulse antenna cannot radiate all the electromagnetic energy, there will be residual pulse current at the antenna end. In the following process, the remaining pulse current will return along the original path in the antenna and continue to radiate electromagnetic energy, so there will be a tailing pulse in the radiation pulse waveform of the antenna. These tailing pulses overlap in time with the signal from the target, thereby interfering with the target signal. It is therefore usually necessary to take corresponding measures to reduce the amplitude of the trailing pulses in the...

AI Technical Summary

Problems solved by technology

But the common resistive loading makes the radiation efficiency of the Antipodal Vivaldi antenna relatively low

At the same time, the size of the radiation end of the antipodal Vivaldi antenna is relatively large, and the distribution range of the terminal current is large. A small amount of resistance loading placed between the feed point and the radiation end cannot effectively absorb the remaining pulse current at the antenna end, thus affecting the drag Limited improvement in tail pulse adverse effects

In addition, when the working frequency band of the antenna is high, the size of the antenna is small, and it is difficult to set up multiple long connections

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