An aperture coupled patch antenna system with MEMS-based reconfigurable polarization

Author

Weily, Andrew R. ; Guo, Y. Jay

Author_Institution

CSIRO ICT Centre, Epping

fYear

2007

fDate

17-19 Oct. 2007

Firstpage

325

Lastpage

328

Abstract

An aperture coupled patch antenna suitable for IEEE 802.11b/g WLAN applications is described. The antenna system enables the polarization of the device to be dynamically reconfigured, where the reconfiguration is actuated by an RF microelectromechanical system (MEMS) single-pole double-throw (SPDT) switch. An equivalent circuit model of the RF MEMS switch is used in the electromagnetic simulations of the antenna. This enables an accurate analysis of the antenna cross-polarization, which is highly dependent on the switch isolation. Theoretical results are given for the return loss, radiation patterns and gain of the antenna in both vertical and horizontal polarization states.

Keywords

antenna radiation patterns; aperture-coupled antennas; electromagnetic wave polarisation; equivalent circuits; microstrip antennas; microswitches; wireless LAN; IEEE 802.11b; IEEE 802.11g; MEMS-based reconfigurable polarization; RF microelectromechanical system switch; SPDT switch; WLAN application; antenna cross-polarization; aperture coupled patch antenna system; electromagnetic simulation; equivalent circuit model; horizontal polarization; radiation pattern; single-pole double-throw switch; vertical polarization; wireless local area network; Apertures; Coupling circuits; Electromagnetic modeling; Electromagnetic wave polarization; Equivalent circuits; Micromechanical devices; Patch antennas; Radiofrequency microelectromechanical systems; Switches; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Information Technologies, 2007. ISCIT '07. International Symposium on

Conference_Location

Sydney,. NSW

Print_ISBN

978-1-4244-0976-1

Electronic_ISBN

978-1-4244-0977-8

Type

conf

DOI

10.1109/ISCIT.2007.4392039

Filename

4392039