Design considerations on the minimum size of broadband antennas for UWB applications

被引：13

作者：

Saitou, Akira ^{[1
]}

Aoki, Kazuhiro ^{[2
]}

Honjo, Kazuhiko ^{[2
]}

Watanabe, Koichi ^{[1
]}

机构：

[1] YKC Corp, Reliabil Dept, Tokyo 2080023, Japan

[2] Univ Electrocommun, Informat & Commun Engn Dept, Tokyo 1828585, Japan

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2008年 / 56卷 / 01期

关键词：

antenna theory; differential geometry; impedance matching; microwave antennas; resins;

D O I：

10.1109/TMTT.2007.912006

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：

The practical realization of Chu's minimum-sized antenna is investigated using self-complementary antennas. Rigorous bandwidth formulas for broadband antennas are derived for broadband antennas based on Chu's fundamental mode equivalent circuit. By comparing input impedances and radiation patterns, the fabricated self-complementary antenna used for Japan's ultra-wideband higher band (7.25-10.25 GHz) is found approximated by the minimum-sized antenna. Using the rigorous bandwidth formulas above, the fabricated antenna is shown to be smaller than the minimum-sized antenna. This breakthrough is achieved by using a more complicated matching circuit for broadband antennas instead of the single-stage inductor used in bandwidth estimation with the Q factor.

引用

页码：15 / 21

页数：7

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