High-efficiency balanced phase-reversal antennas: Principle, bandwidth enhancement, frequency tuning, and beam scanning

2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference Pub Date : 2010-07-05 DOI:10.1109/ANTEM.2010.5552497

N. Yang, C. Caloz, K. Wu

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引用次数: 1

Abstract

Modern wireless systems require low-profile antennas for high integration and low cost. Moreover, balanced antennas with differential configurations have the advantages of easy integration and low cross-polarization. This talk presents a class of novel printed balanced phase-reversal antennas with small lateral footprint and interesting properties. This type of antenna may be regarded as an evolution of Franklin-type antennas [1]. It consists of a plurality of balanced transmission line sections interconnected by phase reversing crossovers having two functions: small dipole radiators and ideal 180° phase shifters. Due to the balanced configuration of the antenna, only the crossovers radiate, and the antenna is subsequently modeled as a serial array of radiation resistances. A six-element coplanar stripline (CPS) array is demonstrated theoretically and experimentally [2], with measured 9.3 dBi of gain for bidirectional radiation and 12.5 dBi of gain for unidirectional radiation with a back reflector.

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高效平衡反相天线:原理、带宽增强、频率调谐和波束扫描

现代无线系统需要低外形的天线，以实现高集成度和低成本。采用差分结构的平衡天线具有易于集成和低交叉极化的优点。本文介绍了一种新型的印刷平衡反相天线，其横向占地面积小，性能有趣。这种天线可以看作是franklin型天线的演变[1]。它由多个平衡的传输线段组成，这些传输线段通过具有两个功能的相位反转交叉器相互连接:小型偶极子散热器和理想的180°移相器。由于天线的平衡配置，只有交叉辐射，天线随后被建模为辐射电阻的串行阵列。理论和实验证明了一种六元共面带状线(CPS)阵列[2]，测量的双向辐射增益为9.3 dBi，带背反射器的单向辐射增益为12.5 dBi。

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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2010 14th International Symposium on Antenna Technology and Applied Electromagnetics & the American Electromagnetics Conference

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