液晶媒质电控扫描天线

liquid crystal medium of electronic scanning antennas

相较于机械扫描天线而言,电扫描天线,因其波束可控制、扫描速度快等优点,正逐渐取代机械扫描天线。传统漏波天线是一种常见的频率扫描天线,通过复合左右手传输线理论可有效解决传统漏波天线的缺陷。本文介绍了电扫天线的优势、传统漏扫天线存在的问题,鉴于此,通过研究超常媒质电控扫描天线发展现状、漏波天线辐射原理、复合左右手传输线理论,提出液晶可控波导传输线的可行性。

Compared with mechanically scanned antennas,electrically scanned antennas are gradually replacing mechanically scanned antennas because of their advantages such as beam control and fast scanning speed.The traditional leak-weak antenna is a common frequency scanning antenna.The shortcomings of the traditional leak antenna can be effectively solved by the theory of composite left-right hand transmission line.In this paper,the advantages of the scanning antenna and the problem of the traditional scanning antenna are introduced,in view of this,the feasibility of the liquid crystal controllable waveguide transmission line is proposed by studying the development status of the electronically controlled scanning antenna with super normal medium,the radiation principle of the leaking antenna and the theory of the composite left-right transmission line.