Microwave antenna system

A microwave antenna and metal wire technology, which is applied to antennas, electrical components, etc., can solve the problems of high cost, far field value of microwave antennas, unsatisfactory half-power bandwidth parameters, and difficulty in manufacturing large-scale CNC machine tools. Good results for gain, far-field maximum and half-power bandwidth
CN103296481AActive Publication Date: 2013-09-11KUANG CHI INST OF ADVANCED TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
KUANG CHI INST OF ADVANCED TECH
Publication Date
2013-09-11

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Abstract

The invention discloses a microwave antenna system which comprises metamaterial, a feed source and a cone, wherein an open hole is formed in the middle of the metamaterial, the feed source is installed in the center of the open hole, and the cone and the feed source are installed coaxially. The metamaterial is composed of first to Nth metamaterial slice layers and a reflection plate which is tightly attached to the Nth metamaterial slice layer. Electromagnetic waves radiated by the feed source are reflected to the metamaterial through the conical surface of the cone, and the metamaterial radiates the electromagnetic waves in the form of plane waves. Each metamaterial slice layer comprises a substrate and a plurality of man-made metal microstructures which are periodically arranged on each substrate. According to the microwave antenna system, the metamaterial is adopted for modulating the electromagnetic waves so that the electromagnetic waves can be radiated in the form of the plane electromagnetic waves, and therefore overall gain of the microwave antenna system is improved. Meanwhile, as for the microwave antenna system, the position of the feed source, the position of the reflection cone and the position of the metamaterial are arranged reasonably, and therefore the far-field maximum value and the half-power bandwidth of the microwave antenna system are shown very well.
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Description

technical field

[0001] The present invention relates to the technical field of wireless communication, in particular to a microwave antenna system. Background technique

[0002] Existing microwave antennas usually consist of a metal paraboloid and a radiation source located at the focus of the metal parabola. The function of the metal parabola is to reflect external electromagnetic waves to the radiation source or to reflect electromagnetic waves emitted by the radiation source. The area of ​​the metal paraboloid and the machining accuracy of the metal paraboloid directly determine the parameters of the microwave antenna, such as gain and directivity.

[0003] However, the existing microwave antenna has the following disadvantages: the metal paraboloid is difficult to manufacture and the cost is high. Metal paraboloids are usually formed by mold casting or processed by CNC machine tools. The technological process of the first method includes: making a paraboloid mold, cast...

Claims

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