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

Volume

63

Issue

9

fYear

2015

Firstpage

4152

Lastpage

4155

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;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2015.2443173

Filename

7120943