Broadband Electrically Small Circularly Polarized Directive Antenna

被引：22

作者：

Son Xuat Ta ^{[1
,2
]}

Ikmo Park ^{[3
]}

Ziolkowski, Richard W. ^{[4
,5
]}

机构：

[1] Ton Duc Thang Univ, Div Computat Phys, Inst Computat Sci, Ho Chi Minh City 700000, Vietnam

[2] Ton Duc Thang Univ, Fac Elect & Elect Engn, Ho Chi Minh City 700000, Vietnam

[3] Ajou Univ, Dept Elect & Comp Engn, Suwon 16499, South Korea

[4] Univ Technol Sydney, Global Big Data Technol Ctr, Ultimo, NSW 2007, Australia

[5] Univ Arizona, Dept Elect & Comp Engn, Tucson, AZ 85721 USA

来源：

IEEE ACCESS | 2017年 / 5卷

基金：

新加坡国家研究基金会;

关键词：

Broadband; circular polarization; crossed dipole; directive radiation; near-field resonant parasitic reflector; small antenna; SMALL HUYGENS SOURCE; ARRAYS; DESIGN;

D O I：

10.1109/ACCESS.2017.2730236

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

A broadband electrically small antenna with directive circularly polarized radiation is presented. It is composed of a compact single-feed crossed dipole driver, which is backed by a near-field resonant parasitic (NFRP) reflector to achieve the directive radiation pattern. The NFRP reflector is designed to generate extra resonances and minimum axial ratio (AR) points in the antenna system. These features are combined with those resulting from the driver to broaden the operational bandwidth. The proposed antenna was fabricated and measured. The antenna prototype, with a low profile (0.066 lambda(o) at 1.45 GHz) and an electrically small size (ka = 0.71 at 1.45 GHz), has a measured |S-11| < -10 dB bandwidth of 25.66% (1.362-1.763 GHz) and a 3-dB AR bandwidth of 10.56% (1.390-1.545 GHz). Additionally, the measurements resulted in a broadside gain of 2.31 +/- 0.4 dBic and an average radiation efficiency of 80% within the operational bandwidth.

引用

页码：14657 / 14663

页数：7

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