Title :
Polarization switchable flat antenna for WLAN applications
Author :
Phongcharoenpanich, Chuwong ; Boonying, Komkris
Author_Institution :
Fac. of Eng., King Mongkut´s Inst. of Technol. Ladkrabang, Bangkok, Thailand
Abstract :
Polarization switchable flat antenna for WLAN applications operated at the center frequency of 2.45 GHz. The proposed antenna consists of the square flat structure, three switches (six P-I-N diodes), transmission-line phase shifters of 0 and 90 degrees. The antenna can be switched between 5 different states: vertical, horizontal and slant polarizations for linear polarization (LP), left-handed circular polarization (LHCP) and right-handed circular polarization (RHCP) by controlling the DC bias of 5 V and the current of 16 mA for the P-I-N diodes. The simulated and measured results show that the proposed antenna can cover the impedance bandwidth from 2.400 GHz to 2.484 GHz and good axial ratio for the circular polarization.
Keywords :
p-i-n diodes; polarisation; switches; transmission lines; wireless LAN; DC bias; LHCP; P-I-N diodes; RHCP; WLAN applications; frequency 2.400 GHz to 2.484 GHz; frequency 2.484 GHz; horizontal polarizations; impedance bandwidth; left-handed circular polarization; linear polarization; polarization switchable flat antenna; right-handed circular polarization; slant polarizations; square flat structure; switches; transmission-line phase shifters; Antenna measurements; Frequency measurement; Phase measurement; Polarization; Probes; Semiconductor device measurement; Switches;
Conference_Titel :
Antennas and Propagation in Wireless Communications (APWC), 2014 IEEE-APS Topical Conference on
Conference_Location :
Palm Beach
Print_ISBN :
978-1-4673-5690-9
DOI :
10.1109/APWC.2014.6905579
