High-gain tapered slot antenna loaded with metal cylindrical lens

Abstract

The invention discloses a high-gain tapered slot antenna loaded with a metal cylindrical lens. The high-gain tapered slot antenna comprises a dielectric substrate. The front surface of the dielectricsubstrate is provided with two metal patches. A horn-shaped opening is formed between the two metal patches. The two ends of the horn-shaped opening are located on a pair of opposite side edges of thedielectric substrate respectively. The smallest end of the horn-shaped opening is a slot line end. The largest end of the horn-shaped opening is a radiation tail end. An intermediate slit width change region formed between the slot line end and the radiation tail end is a radiation section. The slot line end is provided with a microstrip feed structure. The radiation section is provided with a metal cylindrical lens structure composed of a plurality of metal cylinder units at a position close to the radiation tail end. The metal cylindrical lens structure of the antenna can improve the phasedistribution at the radiation tail end of the antenna, thereby suppressing the main lobe splitting of the tapered slot antenna in a high-frequency band, and improving the gain and overall radiation performance of the antenna.

Description

technical field [0001] The invention belongs to the technical field of antenna manufacturing, in particular to a high-gain tapered slot line antenna loaded by a metal cylindrical lens. Background technique [0002] With the development requirements of large capacity and high speed in modern wireless communication systems, antennas, as an indispensable front-end device in wireless communication systems, are also required to have characteristics such as ultra-wideband, high gain, and stable radiation. The tapered slot line antenna is a commonly used ultra-wideband antenna, which has the advantages of wide impedance frequency band, good time-domain characteristics, high gain, and easy planar integration. and other fields have great application potential. However, when the tapered slot line antenna works in the high-frequency part of the impedance band, the effective aperture is large, the phase distribution of the electromagnetic field on the aperture surface is uneven, and th...

AI Technical Summary

Problems solved by technology

However, when the tapered slot line antenna works in the high-frequency part of the impedance band, the effective aperture is large, the phase distribution of the electromagnetic field on the aperture surface is uneven, and the main lobe of the antenna pattern will be depressed, which leads to the tapered slot line antenna in the main lobe. The gain in the radiation direction is significantly reduced, deteriorating the radiation performance of the antenna

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