Title :
Planar Dual-Band Circular Polarization Monopole Antenna for Wireless Local Area Networks
Author :
Jui-Han Lu ; Chong-Wei Liou
Author_Institution :
Dept. of Electron. Commun. Eng., Nat. Kaohsiung Marine Univ., Kaohsiung, Taiwan
Abstract :
A novel planar dual-band circular polarization (CP) monopole antenna is proposed. By introducing an inverted L-shaped strip-sleeve shorted to the ground plane, the proposed dual-band CP antenna design easily achieves impedance bandwidths (RL ≥10 dB) approximating 1932/339 MHz and 3-dB axial-ratio bandwidths approximating 250/360 MHz in 2.4/5.2-GHz wireless local area networks (WLANs), respectively. Across all bandwidths, the measured peak gain and radiation efficiency approximate 2.4/2.8 dBic and 97%/65% in 2.4/5.2-GHz WLANs, respectively, with highly bidirectional patterns in the xz- and yz-planes.
Keywords :
UHF antennas; antenna radiation patterns; directive antennas; electromagnetic wave polarisation; microstrip antennas; monopole antennas; multifrequency antennas; planar inverted-F antennas; wireless LAN; WLAN; antenna radiation efficiency; bidirectional pattern; dual-band CP antenna design; frequency 2.4 GHz; frequency 5.2 GHz; ground plane; inverted L-shaped strip-sleeve; planar dual-band circular polarization monopole antenna; wireless local area networks; xz-plane; yz-plane; Antenna measurements; Antennas; Bandwidth; Dual band; Polarization; Wireless LAN; Circular polarization; monopole antenna; strip-sleeve;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2368137
