Sequentially rotated loop and spiral antenna arrays with a coplanar C-figured feedline

被引：0

作者：

Hirose, Kazuhide ^{[1
]}

Tsubouchi, Susumu ^{[1
]}

Ito, Naonoshin ^{[1
]}

Urushibata, Yuya ^{[1
]}

Nakano, Hisamatsu ^{[2
]}

机构：

[1] Shibaura Inst Technol, Coll Engn, Dept Informat & Commun Engn, Tokyo, Japan

[2] Hosei Univ, Grad Sch Sci & Engn, Sci & Engn, Tokyo, Japan

来源：

ELECTRONICS LETTERS | 2023年 / 59卷 / 22期

关键词：

antenna arrays; antennas; DESIGN;

D O I：

10.1049/ell2.13029

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：

Using the moment method, two array antennas are investigated to reveal the effects of different radiation elements on the array characteristics. Each array comprises four elements sequentially rotated by 90 degrees and excited by a coplanar C-figured feedline above the ground plane. It is found that a loop element array has a 3 dB axial ratio bandwidth of 30%, 3.3 times as wide as that of an isolated loop without an array environment. In contrast, a spiral element array shows a 3 dB gain drop bandwidth of 62% (72% for the axial ratio bandwidth, wider than that of an isolated spiral by a factor of 3.0). Almost the same factors of 3.0 and 3.3 for the spiral and loop element arrays are then compared with those in similar studies. It is found that factors are classified into three groups by feedline types. The simulated results are verified by experimental work. Using the moment method, two array antennas are investigated to reveal the effects of different radiation elements on the array characteristics. Each array comprises four elements sequentially rotated by 90 degrees and excited by a coplanar C-figured feedline above the ground plane.image

引用

页数：3

共 16 条

[1] A Ka-Band High-Gain Circularly Polarized Microstrip Antenna Array [J].