Short-wave double-layer log-periodic antenna fan-shaped array with rigid structure

Abstract

The invention discloses a short-wave double-layer logarithm periodic antenna fan-shaped array with a rigid structure. The short-wave double-layer logarithm periodic antenna fan-shaped array is characterized by comprising a plurality of double-layer horizontal logarithm periodic antennas supported by the double-layer door-shaped supports, wherein the projections of the double-layer horizontal logarithm periodic antennas on a horizontal plane form the fan-shaped arrays with equal included angles, each double-layer door-shaped support comprises two supporting towers, an upper cross beam and a lower cross beam which are arranged between the two supporting towers, a pair of short-wave horizontal log-periodic antennas is fixed to each cross beam along the length direction of the cross beam, anda fan-shaped inward double-layer log-periodic antenna phased array is formed. The short-wave double-layer logarithm periodic antenna fan-shaped array has the advantages of being full in rigidity, widein frequency band, high in gain, high in power and good in maintainability.

Description

technical field [0001] The invention belongs to the technical field of radio short-wave transmitting (receiving) antennas, in particular to a fan-shaped array of short-wave double-layer logarithmic periodic antennas with a rigid structure. Background technique [0002] At present, the antenna curtain of the existing short-wave logarithmic period antenna generally adopts a flexible vibrator and suspension cable structure, and the support tower usually adopts a guyed tower. The antenna curtain needs to be lowered to the ground during antenna maintenance and testing, making on-site maintenance difficult. [0003] In addition, when the flexible structure logarithmic periodic antenna is used as a radar antenna, due to the influence of the wind, the flexible vibrator, suspension cable and supporting tower wire will have a large shake, which will cause the phase modulation of the transmitted / received signal and degrade the phase noise of the signal. Thus affecting the detection per...

AI Technical Summary

Problems solved by technology

[0002] At present, the antenna curtain of the existing short-wave logarithmic period antenna generally adopts a flexible vibrator and suspension cable structure, and the support tower usually adopts a cable tower. The antenna curtain needs to be lowered to the ground during antenna maintenance and inspection, which makes on-site maintenance difficult.

[0003] In addition, when the flexible structure logarithmic periodic antenna is used as a radar antenna, due to the influence of the wind, the flexible vibrator, suspension cable and supporting tower wire will have a large shake, which will cause the phase modulation of the transmitted / received signal and degrade the phase noise of the signal. Thus affecting the detection performance of the radar system for low-speed targets

So the existing shortwave logarithmic periodic antenna is not perfect enough

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