X-Band Circularly Polarized Electronically Steerable Parasitic Array Radiator of DRA

被引：33

作者：

Movahedinia, Reza ^{[1
]}

Sebak, Abdel-Razik ^{[1
]}

Chaharmir, Mohammad Reza ^{[2
]}

Nikkhah, Mohammad Ranjbar ^{[3
]}

Kishk, Ahmed A. ^{[1
]}

机构：

[1] Concordia Univ, Dept Elect & Comp Engn, Montreal, PQ H3G 1M8, Canada

[2] Commun Res Ctr Canada, Ottawa, ON K2H 8S2, Canada

[3] Univ Wisconsin, Dept Elect & Comp Engn, Madison, WI 53706 USA

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2018年 / 66卷 / 02期

关键词：

Circular polarization; dielectric resonator antennas (DRAs); parasitic antenna; reconfigurable antennas; sequential rotation technique; varactors; DIELECTRIC RESONATOR ANTENNA; PATCH ANTENNA; PHASED-ARRAY; MICROSTRIP ANTENNA; ESPAR;

D O I：

10.1109/TAP.2017.2780895

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：

In this paper, an X-band electronically steerable parasitic array radiator (ESPAR) of circularly polarized dielectric resonator antennas (CP-DRAs) is proposed. The array consists of one driven CP-DRA coupled to four parasitic CP-DRAs. The parasitic elements are placed adopting a sequential rotation approach and are terminated by tunable varactors to steer the beam into the desired direction. The proposed CP-ESPAR technique eliminates the need of expensive phase shifters, which significantly reduces cost and fabrication complexity. For performance evaluation, a prototype of the proposed antenna is designed, fabricated, and measured. It is observed that the proposed antenna has a monotonic CP beam scanning from -22 degrees to 22 degrees operating at 10.5 GHz. In addition, the peak value of the realized gain is 6.6 dBic with 0.9 dB variation within the entire scanning range.

引用

页码：721 / 728

页数：8

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