Title :
A polarization reconfigurable microstrip patch antenna using PIN diodes
Author :
Taeho Song ; Youngki Lee ; Deukhyeon Ga ; Jaehoon Choi
Author_Institution :
Dept. of Electron. & Comput. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
A microstrip patch antenna with reconfigurable polarization states among right-hand circular polarization (RHCP), left-hand circular polarization (LHCP) and two linear polarizations (LP) is proposed. The proposed antenna has stacked structure consists of a radiator with a ring-slot and a cross slot, four PIN diodes and a single feed line. The polarization state can be determined by switching the PIN diodes ON and OFF. To improve the impedance matching characteristic, the cross slot is used. The proposed antenna has 40 MHz 10 dB return loss bandwidth and more than 8 MHz 3 dB axial ratio bandwidth in the circularly polarized state.
Keywords :
antenna feeds; antenna radiation patterns; electromagnetic wave polarisation; impedance matching; microstrip antennas; p-i-n diodes; slot antennas; LHCP; LP; PIN diode; RHCP; axial ratio bandwidth; cross slot radiator; frequency 40 MHz; impedance matching characteristics; left-hand circular polarization; linear polarization; loss 10 dB; polarization reconfigurable microstrip patch antenna; return loss bandwidth; right-hand circular polarization; ring-slot radiator; single feed line; stacked structure antenna; Feeds; Microstrip; Microstrip antennas; PIN photodiodes; Patch antennas; Polarization; PIN diodes; circular polarization; linear polarization; patch antenna; reconfigurable polarization;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2012 Asia-Pacific
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-4577-1330-9
Electronic_ISBN :
978-1-4577-1331-6
DOI :
10.1109/APMC.2012.6421682
