Title :
A Novel Broadband Eighth-Wave Conical Antenna
Author :
Palud, Sébastien ; Colombel, Franck ; Himdi, Mohamed ; Meins, Cyrille Le
Author_Institution :
Inst. of Electron. & Telecommun. of Rennes, Rennes Univ., Rennes
fDate :
7/1/2008 12:00:00 AM
Abstract :
A novel antenna is composed of a conical monopole with metallic parasitic elements and a capacitive disk placed above a ground plane. A dielectric substrate is used in order to optimize the performances. This antenna provides broadband characteristics and omnidirectional radiation patterns over the whole bandwidth with a height limited to a one eighth wavelength associated to the lowest frequency. 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 gain in spite of a size extremely reduced.
Keywords :
antenna radiation patterns; broadband antennas; conical antennas; impedance matching; monopole antennas; broadband eighth-wave conical monopole antenna; capacitive disk; dielectric substrate; impedance matching; metallic parasitic element; omnidirectional radiation pattern; Antenna radiation patterns; Bandwidth; Broadband antennas; Dielectric substrates; Feeds; Frequency; Impedance matching; Polarization; Shape; Three dimensional displays; Broadband antenna; conical monopolar antenna; impedance matching; omnidirectional radiation patterns;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2008.924775
