Improved network analysis of coupled antenna diversity performance

被引：14

作者：

Morris, ML ^{[1
]}

Jensen, MA ^{[1
]}

机构：

[1] Brigham Young Univ, Dept Elect & Comp Engn, Provo, UT 84602 USA

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2005年 / 4卷 / 04期

基金：

美国国家科学基金会;

关键词：

antenna diversity; impedance matching; mutual coupling; noise figure;

D O I：

10.1109/TWC.2005.852135

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a new framework for the analysis of mutually coupled diversity antennas based on network theory. The network model incorporates,the matching network between the antennas and front-end amplifiers and uses a realistic model for the amplifier noise. The resulting analysis includes the impact of the coupled-antenna radiation patterns and impedance characteristics in determining the branch signal-to-noise ratios (SNRs). Application of the formulation to coupled dipole antennas characterized using full wave electromagnetic analysis illustrates that a matching network providing a minimum amplifier noise figure achieves significantly better diversity performance than one providing maximum power transfer.

引用

页码：1928 / 1934

页数：7

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