Radiation characteristics of linearly tapered slot antennas

Digest on Antennas and Propagation Society International Symposium Pub Date : 1989-06-26 DOI:10.1109/APS.1989.134956

D. Schaubert

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引用次数: 7

Abstract

The linearly tapered slot antenna (LTSA) is an endfire radiator formed by a tapered slotline that is usually supported on a thin, low- epsilon /sub r/ substrate. K.S. Yngvesson et al. (1985) have studied the radiation characteristics of LTSAs that are optimized for use in the focal plane of imaging/multiple-beam systems having f/D in the range of 1 to 2. In the present work, the author presents the results of an experimental investigation of the radiation properties of antennas with wider beamwidths. Some data on narrow-beamwidth antennas are included. Particular emphasis is placed on polarization in the intercardinal planes, where high levels of cross-polarization are observed. The study was conducted by fabricating four antennas on 30-mil Duroid ( epsilon /sub r/=2.2). In addition, two antennas were fabricated from 3-mil shim stock and supported by a styrofoam bridge to create antennas with air dielectric. It is concluded that the LTSA has many advantageous characteristics, and it is compatible with printed-circuit feed networks. However, designers should be aware of its polarization properties, which could adversely affect system performance.<>

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线性锥形缝隙天线的辐射特性

线性锥形槽天线(LTSA)是一种末端辐射器，由一个锥形槽线组成，通常支撑在一个薄的，低epsilon /sub - r/基板上。K.S. Yngvesson等人(1985)研究了ltsa的辐射特性，该ltsa被优化用于f/D范围为1到2的成像/多光束系统的焦平面。在本工作中，作者介绍了宽波束天线辐射特性的实验研究结果。本文还包括了窄波束宽度天线的一些数据。特别强调的是在柱面间的偏振，在那里观察到高水平的交叉偏振。该研究通过在30毫米Duroid (epsilon /sub r/=2.2)上制作4个天线进行。此外，两个天线由3毫米厚的垫片制成，并由泡沫聚苯乙烯桥架支撑，以形成空气介质的天线。结果表明，LTSA具有许多优点，与印刷电路馈电网络兼容。然而，设计人员应该意识到它的极化特性，这可能会对系统性能产生不利影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Digest on Antennas and Propagation Society International Symposium

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