A compact and low-profile metamaterial ring antenna with vertical polarization

被引：148

作者：

Qureshi, F ^{[1
]}

Antoniades, MA ^{[1
]}

Eleftheriades, GV ^{[1
]}

机构：

[1] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2005年 / 4卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

metamaterials; negative refractive index; small antennas; vertical polarization;

D O I：

10.1109/LAWP.2005.857041

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 compact (lambda(0)/11 footprint) and low-profile (lambda(0)/28 height) metamaterial ring antenna is proposed using two metamaterial unit cells. Each constituent unit cell consists of negative-refractive-index (NRI) microstrip transmission lines (TL) designed to incur a zero insertion phase at the antenna design frequency. This allows the inductive posts to ground, which act as the main radiating elements, to be fed in phase. Hence, the antenna operates as two closely spaced monopoles that are fed in phase through a compact feed network. An embedded matching network ensures good VSWR performance. The theoretical performance of the antenna is verified by full-wave simulations and experimental data obtained from a fabricated prototype at 1.77 GHz. The antenna offers a 120 MHz -10 dB bandwidth and a measured efficiency exceeding 50%.

引用

页码：333 / 336

页数：4

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