Title :
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
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;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6904470
