Title :
Polarization Reconfigurable Eccentric Annular Ring Slot Antenna Design
Author :
Sim, Chow-Yen-Desmond ; Yan-Jie Liao ; Hen-Lun Lin
Author_Institution :
Dept. of Electr. Eng., Feng Chia Univ., Taichung, Taiwan
Abstract :
A microstrip-fed reconfigurable eccentric annular ring slot (EARS) antenna with switchable polarization is proposed. To generate orthogonal circular polarization (CP) radiations, two identical perturbation slots (PSs) are loaded below the eccentric ring-shaped slot. By incorporating a PIN diode switch across each PS, the proposed antenna can switch between left-hand CP (LHCP), right-hand CP (RHCP), and linear polarization (LP). All three polarizations have shown good impedance bandwidth and broad CP bandwidth that can cover the WLAN 2.4 GHz operating band (2400-2480 MHz). Furthermore, desirable gains of 2.49- 2.82 dBi and 2.94-3.24 dBic are also exhibited at LP and LHCP/RHCP, respectively.
Keywords :
antenna radiation patterns; electromagnetic wave polarisation; loop antennas; metamaterial antennas; metamaterials; microstrip antennas; p-i-n diodes; slot antennas; wireless LAN; LHCP; PIN diode switch; RHCP; WLAN; bandwidth 2400 MHz to 2480 MHz; broad CP bandwidth; eccentric ring shaped slot; frequency 2.4 GHz; impedance bandwidth; left-hand CP; linear polarization; microstrip fed reconfigurable EARS antenna; orthogonal circular polarization radiator; perturbation slot; polarization reconfigurable eccentric annular ring slot antenna design; right-hand CP; switchable polarization; Antenna measurements; Bandwidth; Ear; Microstrip antennas; PIN photodiodes; Switches; Annular ring slot antenna (ARSA); annular ring slot antenna; microstrip-fed; reconfigurable antenna; switchable polarization agile;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2015.2443173
