Title :
A Novel Reduced-Height Broadband Monopole
Author :
Palud, Sébastien ; Colombel, Franck ; Himdi, Mohamed ; Meins, Cyrille Le
Author_Institution :
IETR, Univ. of Rennes 1, Rennes
Abstract :
This paper presents a broadband omnidirectional vertically polarized antenna of only a one eighth wavelength associated to the lowest frequency. This antenna is composed of a conical monopole with metallic parasitic elements, a capacitive disk and a dielectric substrate placed above a square ground plane. This structure provides broadband performances and omnidirectional radiation patterns over the whole bandwidth. Simulations and experiments demonstrate that this structure exhibits a 2.9:1 impedance bandwidth with VSWR below 2:1 and very good radiation patterns and gains in spite of a height extremely reduced.
Keywords :
antenna radiation patterns; broadband antennas; dielectric materials; electromagnetic wave polarisation; monopole antennas; broadband omnidirectional vertically polarized antenna; capacitive disk; dielectric substrate; metallic parasitic elements; omnidirectional radiation patterns; reduced-height broadband monopole; square ground plane; Antenna radiation patterns; Bandwidth; Broadband antennas; Dielectric substrates; Feeds; Frequency; Impedance; Polarization; Resonance; Three dimensional displays;
Conference_Titel :
Antenna Technology: Small Antennas and Novel Metamaterials, 2008. iWAT 2008. International Workshop on
Conference_Location :
Chiba
Print_ISBN :
978-1-4244-1522-9
DOI :
10.1109/IWAT.2008.4511320
