Ka-Band Antenna With High Circular Polarization Purity and Wide AR Beamwidth

被引：31
|
作者：
Al-Saedi, Hussam [1 ,2 ]
Abdel-Wahab, Wael M. [3 ,4 ]
Gigoyan, Suren [4 ]
Mittra, Raj [5 ,6 ]
Safavi-Naeini, Safieddin
机构：
[1] Univ Technol Baghdad, Dept Commun Engn, Baghdad, Iraq
[2] Univ Waterloo, Dept Elect & Comp Engn, Waterloo, ON 10066, Canada
[3] C COM Satellite Syst Inc, R&D, Ottawa, ON K1B 3V7, Canada
[4] Univ Waterloo, Dept Elect & Comp Engn, Waterloo, ON N2L 3G1, Canada
[5] Univ Cent Florida, Dept Elect & Comp Sci, Orlando, FL 32816 USA
[6] King Abdullah Univ, Jeddah 23955, Saudi Arabia
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2018年 / 17卷 / 09期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Circularly polarized antenna; high-polarization purity; Ka-band antenna array; wide axial-ratio (AR) angular beamwidth antenna;
D O I：
10.1109/LAWP.2018.2864172
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：
This letter presents the design of a wideband circularly polarized antenna, operating at Ka band. The proposed antenna comprises a circular microstrip patch antenna that is coupled to a microstrip feedline through a modified L-shaped aperture slot. The antenna radiates a wideband right-hand circularly polarized wave with high polarization purity and a wide axial ratio (AR) angular beamwidth. A 4 x 4 antenna subarray has been designed, fabricated, and measured to validate the proposed concept. The array exhibits a reflection coefficient S-11 < - 10 dB over the frequency band 27-31 GHz. Moreover, the 4 x 4 antenna subarray yields a high level of polarization purity, as well as a flat measured AR <= 1.15 dB over the frequency range 27.55-30.45 GHz (10% bandwidth).
引用
收藏
页码：1697 / 1701
页数：5
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