Title :
A novel circular polarized antenna for minimally invasive devices
Author :
Jui-Han Lu ; Hao-Shiang Huang ; Yuan-Chih Lin
Author_Institution :
Dept. of Electron. Commun. Eng., Nat. Kaohsiung Marine Univ., Kaohsiung, Taiwan
Abstract :
A novel planar dual-spiral monopole antenna with circular polarization (CP) operation is proposed. Dual asymmetrical strip-sleeves are utilized and shorted at the ground plane, the proposed CP design for 2.45 GHz band can easily be achieved and provides the impedance bandwidth (RL ≥10 dB) of about 240 MHz and the 3 dB axial-ratio (AR) bandwidth of about 130 MHz. The measured peak gain and radiation efficiency are about 9.1 dBic and 81 % across the operating bands, respectively.
Keywords :
UHF antennas; antenna radiation patterns; electromagnetic wave polarisation; monopole antennas; planar antennas; spiral antennas; wireless LAN; AR bandwidth; CP operation; WLAN; antenna radiation efficiency; axial-ratio bandwidth; circular polarization operation; circular polarized antenna; dual asymmetrical strip-sleeve; frequency 2.45 GHz; impedance bandwidth; minimally invasive device; peak gain; planar dual spiral monopole antenna; wireless local area network; Antenna measurements; Bandwidth; Broadband antennas; Spirals; Wireless LAN; circular polarization; dual-spiral; strip-sleeves;
Conference_Titel :
Antennas and Propagation (APCAP), 2014 3rd Asia-Pacific Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4799-4355-5
DOI :
10.1109/APCAP.2014.6992446
