The design of shared aperture antennas consisting of differently sized elements

被引：46

作者：

Coman, CI ^{[1
]}

Lager, LE ^{[1
]}

Ligthart, LP ^{[1
]}

机构：

[1] Delft Univ Technol, IRCTR, NL-2600 GA Delft, Netherlands

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2006年 / 54卷 / 02期

关键词：

mode-matching methods; shared aperture; sparse array antennas;

D O I：

10.1109/TAP.2005.863382

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：

A consistent strategy for the design of finite array antennas consisting of differently sized radiating elements is discussed. In view of increasing the total bandwidth of the antenna system, while maintaining a low mutual coupling between the elementary radiators, sparse subarrays, operating at adjacent frequency ranges, are interleaved on a common (shared) aperture. The sparse architectures are designed using a combinatorial method that ensures an acceptable behavior in the side-lobes region in conjunction with a narrow beamwidth. The effect of the mutual coupling between identical and differently sized elements is accurately evaluated and is accounted for in predicting the performance of each individual radiator. The concept is illustrated by designing a shared aperture antenna consisting of two interwoven subarrays that jointly cover a fractional bandwidth of 14% in the X-band. Cavity-backed, stacked-patches antennas with coaxial feeding are used as elementary radiators.

引用

页码：376 / 383

页数：8

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