Development and analysis of a folded shorted-patch antenna with reduced size

被引：81

作者：

Li, RL ^{[1
]}

DeJean, G ^{[1
]}

Tentzeris, MM ^{[1
]}

Laskar, J ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2004年 / 52卷 / 02期

基金：

美国国家科学基金会;

关键词：

antenna theory; microstrip antennas; small antennas;

D O I：

10.1109/TAP.2004.823884

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 length of a wall-shorted rectangular patch antenna can be reduced from similar to lambda(0)/4 to similar to lambda(0)/8 by a simple folding operation, which results in a stacked shorted-patch (S-P) structure with a resonant frequency that can be controlled by modifying the distance between the stacked (lower and upper) shorted-patches. A theoretical analysis based on a simple transmission-line model is presented and compared with numerical simulations, showing good agreement if the height of the folded patch is much smaller than the patch length. The physical insight of the variation of the resonant frequency for this reduced-size antenna can be understood by considering the antenna as a shorted patch loaded with a capacitor. An experimental verification is carried out for a 15 rum x 15 mm x 6 mm folded S-P antenna prototype designed for the 2.4 GHz ISM band that can achieve a 10-dB return loss bandwidth of 4% and results in a nearly omni-directional radiation pattern.

引用

页码：555 / 562

页数：8

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