A Four-Arm Circularly Polarized High-Ga n High-Tilt Beam Curl Antenna for Beam Steering Applications

被引：32

作者：

Zhou, Hengyi ^{[1
]}

Pal, Arpan ^{[1
]}

Mehta, Amit ^{[1
]}

Mirshekar-Syahkal, Dariush ^{[2
]}

Nakano, Hisamatsu ^{[3
]}

机构：

[1] Swansea Univ, Coll Engn, Swansea SA1 8EN, W Glam, Wales

[2] Essex Univ, Dept Comp Sci & Elect Engn, Colchester CO4 3SQ, Essex, England

[3] Hosei Univ, Dept Sci & Engn, Tokyo 1848584, Japan

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2018年 / 17卷 / 06期

基金：

日本学术振兴会;

关键词：

Beam steering; circular polarization; curl antenna; tilted beam; ARCHIMEDEAN SPIRAL ANTENNA; SQUARE-LOOP ANTENNA; CONDUCTING PLANE; PATCH ANTENNA; ARRAY; REFLECTOR; FEED;

D O I：

10.1109/LAWP.2018.2830121

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 novel circularly polarized (CP) beam-steering four-arm curl antenna with four feed points is presented. The antenna provides steerable high-gain high-tilt right-handed CP (RHCP) beams for satellite communications. The antenna operates over a test frequency band of 1500-1670 MHz and covers the entire Li band. The four arms are arranged symmetrically with respect to the center of the antenna, and each arm is fed by a coaxial line. When one of the four feed points is excited and the remaining feed points are either open-circuited or terminated to 50 Omega impedance, the antenna generates an RHCP tilted beam of 49 degrees in the elevation plane. At a test frequency of 1575 MHz, the antenna provides a gain of 8.12 dBic. The antenna can switch the tilted beam in the four different space quadrants in the azimuth plane by exciting one feed point at a time. It is found that over the test hand, the antenna provides a total efficiency of more than 89% and a gain of greater than 8 dBic.

引用

页码：1034 / 1038

页数：5