Title :
Broadband characteristics of a dome-dipole antenna
Author :
Zhao, Jing ; Chen, Chi-Chih ; Psychoudakis, Dimitris ; Volakis, John L.
Author_Institution :
Electr. & Comput. Eng. Dept., Ohio State Univ., Columbus, OH, USA
Abstract :
In this paper a dome-dipole antenna for ultra wideband operation is presensted. The antenna is a 3D generalization of the wideband flare dipole. For wideband impedance matching, the outer surface of the dome dipole was exponentially tapered. This design also led to a more uniform radiation pattern over larger bandwidth. Additionally, a 24" wide and 20" tall prototype of the dome-dipole antenna was fabricated and demonstrated to deliver an operational bandwidth from 180 MHz to at least 14 GHz with greater than 0 dB performance. Of importance is that the calculated E-plane patterns have a consistent main beam over a 140:1 bandwidth.
Keywords :
UHF antennas; VHF antennas; antenna radiation patterns; dipole antennas; impedance matching; microwave antennas; ultra wideband antennas; 3D generalization; E-plane pattern; antenna radiation pattern; broadband characteristic; dome-dipole antenna; frequency 180 MHz to 14 GHz; ultra wideband antenna; wideband flare dipole; wideband impedance matching; Antenna measurements; Bandwidth; Broadband antennas; Dipole antennas; Frequency measurement; Gain;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-4967-5
DOI :
10.1109/APS.2010.5561683
