Pulse antenna for communicating delay lines and gradient slot line by tree access

Abstract

The invention relates to a pulse antenna for communicating delay lines and a gradient slot line by tree access. The pulse antenna comprises gradient slot line radiating patches (1), medium substrates (2), a microstrip feeder line (3), tree access lines (4) and communicating delay lines (5), wherein the edge of a gap between two gradient slot line radiating patches (1) is opened to form a flared opening; the largest opened positions at the tail ends of the gradient slot line radiating patches (1) are radiating tail ends (7) of the antenna; the other end of the opening of the gap is an open end of a slot line (8); one end of the microstrip feeder line (3) is a feed end (9), and the other end of the microstrip feeder line (3) is a transition section (10) from a microstrip to the slot line; the tree access lines (4) and the communicating delay lines (5) are positioned at the areas of the back surfaces of the medium substrates (2) of the two patches; the branch of the tree access line (4) at each area converges into a convergent point (12); the two convergent points (12) are connected by the communicating delay lines (5); and the tail ends of the branches of the tree access line (4) are connected with the radiating tail ends (7) of the antenna by metallized via holes (13). In the antenna, the occurrence time of tailing pulse can be delayed under the small-sized condition.

Description

technical field [0001] The invention relates to a pulse antenna, in particular to a tree access connected 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 subsequent process, so a tailing pulse will be generated in the antenna radiation waveform. 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 ...

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

In addition, from the feed end of the antenna, the antenna is an open circuit, which is not conducive to the radiation of transient pulse energy

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