Comparative study on different feeding techniques of rectangular patch antenna

2016 Thirteenth International Conference on Wireless and Optical Communications Networks (WOCN) Pub Date : 2016-07-21 DOI:10.1109/WOCN.2016.7759032

S. Chakravarthy, N. Sarveshwaran, S. Sriharini, M. Shanmugapriya

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引用次数: 26

Abstract

A microstrip patch antenna is a planar directional antenna in which a metal patch is placed on top of a dielectric substrate which in turn is placed on top of a metal ground plane. The power transfer between a source and antenna is done through a feed line. In general, the characteristic impedance of a transmission line is 50 ohms. By maximum power transfer theorem, the patch antenna should be fed at a point where input impedance is 50 ohms for maximum input power. There are several feeding techniques for patch antenna to match this condition. In this paper, a comparative study between inset feed, co-axial feed, aperture feed and proximity feed of a rectangular micro-strip patch antenna is done on the basis of S11 parameter, VSWR, directivity, beamwidth, bandwidth and radiation pattern. Design for each feeding technique is simulated and studied using the CST microwave studio software. The resonant frequency of the four antennas studied in this paper is 2 GHz. The fabricated inset fed patch antenna has been tested. It has acceptable return loss and comparable radiation performance with that of the simulated antenna.

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矩形贴片天线不同馈电方式的比较研究

微带贴片天线是一种平面定向天线，其中金属贴片放置在介电基片的顶部，而介电基片又放置在金属接平面的顶部。电源和天线之间的功率传输是通过馈线完成的。一般来说，传输线的特性阻抗为50欧姆。根据最大功率传输定理，对于最大输入功率，贴片天线应在输入阻抗为50欧姆处馈电。有几种贴片天线馈电技术可以满足这种条件。本文在S11参数、驻波比、指向性、波束宽度、带宽和辐射方向图的基础上，对矩形微带贴片天线的插入馈电、同轴馈电、孔径馈电和邻近馈电进行了比较研究。利用CST微波工作室软件对各进料工艺的设计进行了仿真研究。本文所研究的四根天线的谐振频率均为2ghz。对自制的插入式馈电贴片天线进行了测试。它具有可接受的回波损耗和与模拟天线相当的辐射性能。

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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2016 Thirteenth International Conference on Wireless and Optical Communications Networks (WOCN)

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