High gain slot array antenna based on left-hand material

Abstract

The invention discloses a high-gain gap array antenna based on a left-handed material, which is characterized in that the antenna has a multilayer structure and comprises three metal layers of a gap radiating layer (1), a feeding layer (2) and a reflecting layer (3); two air layers are formed among three metal layers; a coaxial joint (4) is used for feeding; the gap radiating layer (1) is formed by etching ringent resonant ring gaps (6) and rectangular narrow strip gaps (5) on the metal layer; the gaps form a periodic array as an antenna radiation unit; the feeding layer (2) comprises a T-shaped power splitting system (8) and a plurality of metal conduction bands (9); an input port of the T-shaped power splitting system in a coaxial feeding point (7) is connected with an inner conductor of the coaxial joint (4); each output port of the T-shaped power splitting system is connected with each metal conduction band (9) respectively; the metal conduction band is positioned right below each row of the ringent resonant ring; the gap radiating layer (1) and the reflecting layer (3) act as underground metal; the underground metal and the metal conduction bands (9) form a stripline transmission line. The high-gain gap array antenna has the advantages of high gain, simple manufacture and low cost.

Description

technical field [0001] The invention relates to a high-gain slot array antenna based on left-handed materials, which belongs to the field of antennas in radio equipment. Background technique [0002] High-gain directional antennas are required in many fields such as wireless communication, remote sensing and telemetry, and a large number of high-gain directional antennas have been developed, such as parabolic antennas, angular reflection antennas, and microstrip array antennas. People are constantly developing new types of directional antennas, hoping to achieve high gain while reducing antenna size, processing difficulty and cost, and improving performance indicators such as antenna operating frequency bandwidth and radiation efficiency, so as to meet the requirements of high performance in a large number of engineering applications. gain directional antenna requirements. [0003] Left-handed materials are a research hotspot in international physics and electromagnetism in...

AI Technical Summary

Problems solved by technology

However, in the above antenna, the left-hand material is made as an independent structure and added to the antenna structure, resulting in an increase in the thickness, weight and size of the antenna

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