Vivaldi antennas for microwave imaging: Theoretical analysis and design considerations

被引：56

作者：

Chiappe, Marco ^{[1
]}

Gragnani, Gian Luigi ^{[1
]}

机构：

[1] Univ Genoa, Dept Biophys & Elect Engn, I-16145 Genoa, Italy

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2006年 / 55卷 / 06期

关键词：

broadband antennas; double-Y balun; frequency-independent antennas; microwave imaging; Vivaldi aerial;

D O I：

10.1109/TIM.2006.884289

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 geometrical and electrical features of the Vivaldi antenna are studied in the light of the frequency-independent antenna theory. A scaling principle is derived for the exponential tapering of the antenna, and a closed-form model for the current distribution is provided. Such theoretical results are in good agreement with several numerical simulations performed by using the NEC2 code. Furthermore, a practical feeding system, based on a double-Y balun, is developed and tested to obtain a more systematic approach to the design of the aforesaid antennas.

引用

页码：1885 / 1891

页数：7

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