Title :
Dual wideband printed dipole antenna with integrated balun
Author :
Lindberg, P. ; Öjefors, E. ; Barna, Z. ; Thornell-Pers, A. ; Rydberg, A.
Author_Institution :
Signals & Syst. Group, Uppsala Univ.
fDate :
6/1/2007 12:00:00 AM
Abstract :
A printed dipole antenna with integrated balun is presented. The radiating structure is a two-element dipole with resonances at 900 and 1700 MHz, with the balun providing one extra resonance at each band. By co-designing the radiating element with a Marchand balun modified for dual-band operation, an antenna covering the cellular bands 824-960 and 1710-2170 MHz has been achieved. Measurements on a fabricated antenna on low-cost FR-4 substrate show antenna efficiencies of >80 and >70% in the lower and upper band respectively. Despite the use of a dual-element radiator, the radiation pattern that is close to omni-directional H-plane is obtained
Keywords :
UHF antennas; antenna radiation patterns; baluns; broadband antennas; cellular radio; dipole antenna arrays; multifrequency antennas; 1710 to 2170 MHz; 824 to 960 MHz; antenna efficiencies; dual wideband printed dipole antenna; integrated balun; radiating structure; radiation pattern; two-element dipole;
Journal_Title :
Microwaves, Antennas & Propagation, IET
DOI :
10.1049/iet-map:20050286
