Pulse antenna with accessing delay line and gradual-change slot line in tree-form

Abstract

The invention discloses a pulse antenna with accessing a delay line and a gradual-change slot line in a tree-form, which is a pulse antenna delaying a tailing pulse. An edge of a gap between two radiation pasters (1) is expanded to form a horn-shaped opening; the maximum position of a tail end opening of the radiation pasters (1) is an antenna radiation tail end (7), and the other end of the gap opening is an open circuit end of the slot line (8); one end of a microstrip (3) is a feed end (9), and the other end of the microstrip (3) is a transition section (10) from the microstrip to the slot line; an access line (4) and the delay line (5) are arranged in a back zone of a base board (2) of the two pasters (1); each branch of the zone access line (4) converges into a convergent point (12), tail ends of the branches pass through a metalized through-hole (13) and are connected with the antenna radiation tail end (7); and one end of the delay line (5) is connected with the convergent point (12), and the other end is the open circuit. According to the antenna, an arise time of the tailing pulse can be delayed in the condition of a small size.

Description

technical field [0001] The invention relates to a pulse antenna, in particular to a tree-shaped access delay line tapered slot line pulse antenna, which belongs to the technical 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 remaining unradiated pulse current at the antenna radiation end. The remaining pulse current will return along the original path in the antenna, and continue to radiate electromagnetic energy in the process thereafter, thus forming a tailing pulse. When the pulse antenna is used in ground penetrating radar, these tailing pulses overlap with the signal from the target in the time domain, thereby causing interference to the target signal, so measures are usually taken to reduce the influence of the tailing pulse ...

AI Technical Summary

Problems solved by technology

The main problems of these loading methods are: the loaded resistance will cause the reduction of the radiation efficiency of the pulse antenna, and when the antenna operating frequency band is high and the antenna size is small, it is more difficult to solve the tailing pulse problem

Moreover, 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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