Title :
A Dual-Band Polarization Reconfigurable Antenna for WLAN Systems
Author :
Pei-Yuan Qin ; Guo, Y. Jay ; Can Ding
Author_Institution :
ICT Centre, CSIRO, Marsfield, NSW, Australia
Abstract :
A new microstrip dual-band polarization reconfigurable antenna is presented for wireless local area network (WLAN) systems operating at 2.4 and 5.8 GHz. The antenna consists of a square microstrip patch that is aperture coupled to a microstrip line located along the diagonal line of the patch. The dual-band operation is realized by employing the TM10 and TM30 modes of the patch antenna. Four shorting posts are inserted into the patch to adjust the frequency ratio of the two modes. The center of each edge of the patch is connected to ground via a PIN diode for polarization switching. By switching between the different states of PIN diodes, the proposed antenna can radiate either horizontal, vertical, or 45° linear polarization in the two frequency bands. Measured results on reflection coefficients and radiation patterns agree well with numerical simulations.
Keywords :
antenna radiation patterns; microstrip antennas; microstrip lines; microwave antennas; multifrequency antennas; p-i-n diodes; polarisation; wireless LAN; 45 degree linear polarization; PIN diode; antenna radiation patterns; frequency 2.4 GHz; frequency 5.8 GHz; microstrip dual-band polarization reconfigurable antenna; microstrip line; microwave antennas; polarization switching; reflection coefficients; shorting posts; square microstrip patch; wireless LAN; wireless local area network; Antenna measurements; Antenna radiation patterns; Dual band; Microstrip; Microstrip antennas; Resonant frequency; Aperture-coupled; dual-band antennas; microstrip antennas; polarization diversity; reconfigurable antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2013.2279219
