Antenna with switchable linear polarization for 60 GHz

Author

Hsin-Chia Lu ; Siang-Yu Siao ; Shih-Keng Chuang ; Pei-Zong Rao ; Wei-Shin Tung

Author_Institution

Dept. of Electr. Eng. & Grad. Inst. Of Commun. Eng., Nat. Taiwan Univ., Taipei, Taiwan

fYear

2014

fDate

6-11 July 2014

Firstpage

277

Lastpage

278

Abstract

An antenna with switchable linear polarization is presented. This antenna has two input ports. One for RHCP and one for LHCP. The linear combination of both circular polarization waves with equal amplitude will result in a linear polarization while the phase difference between them controls the direction of linear polarization. With 2-bit phase shifter at 0°, 90°, 180° and 270°, this antenna can synthesis linear polarization at 0°, 45°, 90° and 135°. The measured -10dB input matching bandwidth is about 61~66GHz. Measured antenna gain when switched to x- and y-polarization are about 7 and 8 dB respectively.

Keywords

electromagnetic wave polarisation; microwave antennas; microwave phase shifters; LHCP; RHCP; antenna; circular polarization wave; frequency 61 GHz to 66 GHz; gain -10 dB; input matching bandwidth; phase difference; phase shifter; switchable linear polarization; word length 2 bit; x-polarization; y-polarization; Antenna measurements; Couplers; Metals; Patch antennas; Polarization; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE

Conference_Location

Memphis, TN

ISSN

1522-3965

Print_ISBN

978-1-4799-3538-3

Type

conf

DOI

10.1109/APS.2014.6904470

Filename

6904470