Title :
Dual-band circularly polarized monopole antenna
Author :
Wu, Jin-Wei ; Jou, Christina F. ; Wang, Chien-Jen
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu
Abstract :
This paper proposes a dual-band circular polarization (CP) monopole antenna. This antenna can generate a broadband impedance-bandwidth from 2.17 to 8.47 GHz, and excite a left-hand circular polarization (LHCP) at 2.48 GHz and right-hand circular polarization (RHCP) at 3.90 GHz. The measured 3-dB axial ratio (AR) bandwidths are about 140 MHz from 2.41 to 2.55 GHz approximately 5.6% with respect to the center frequency at 2.48 GHz and 900 MHz from 3.45 to 4.35 GHz approximately 23.1% with respect to the center frequency at 3.90 GHz.
Keywords :
UHF antennas; broadband antennas; electromagnetic wave polarisation; microwave antennas; monopole antennas; multifrequency antennas; broadband impedance-bandwidth; dual-band circularly polarized monopole antenna; frequency 140 MHz; frequency 2.17 GHz to 8.47 GHz; frequency 900 MHz; Antenna measurements; Bandwidth; Broadband antennas; Dual band; Frequency; Impedance; Patch antennas; Polarization; Slot antennas; Spirals;
Conference_Titel :
Antenna Technology, 2009. iWAT 2009. IEEE International Workshop on
Conference_Location :
Santa Monica, CA
Print_ISBN :
978-1-4244-4395-6
Electronic_ISBN :
978-1-4244-4396-3
DOI :
10.1109/IWAT.2009.4906867
