Connected Delay Line Tapered Slot Line Impulse Antenna

Abstract

The invention relates to a pulse antenna for communicating delay lines and a gradient slot line, in particular to a loading pulse antenna of the delay lines. The pulse antenna comprises gradient slot line radiating patches (1), medium substrates (2), a microstrip feeder line (3), the delay lines (4) and a communicating line (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 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 delay lines (4) are positioned at the areas of the back surfaces of the substrates (2) of the two radiating patches (1); one end of the delay line (4) at each area converges into a convergent point (12); the two convergent points (12) are connected by the communicating line (5); the other ends of the delay lines are connected with the radiating tail ends (7) by metallized via holes (13). In the antenna, the occurrence time of tailing pulse can be delayed, and the adverse influence on the radiation efficiency of the antenna can be reduced.

Description

technical field [0001] The invention relates to a pulse antenna, in particular to a 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 to reduce th...

AI Technical Summary

Problems solved by technology

The main problem of these loading methods is: the loaded resistance will cause the reduction of the radiation efficiency of the pulse antenna. 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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