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

fYear

2014

fDate

3-9 Aug. 2014

Firstpage

695

Lastpage

698

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/APWC.2014.6905579

Filename

6905579