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

Volume

56

Issue

7

fYear

2008

fDate

7/1/2008 12:00:00 AM

Firstpage

2112

Lastpage

2116

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;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2008.924775

Filename

4558312