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

被引：35

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

页码：1697 / 1701

页数：5

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