A Novel Broadband Eighth-Wave Conical Antenna

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...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2008-07, Vol.56 (7), p.2112-2116
Main Authors: Palud, S., Colombel, F., Himdi, M., Le Meins, C.
Format: Article
Language:English
Subjects:
Antenna radiation patterns
Antennas
Applied sciences
Bandwidth
Broadband
Broadband antenna
Broadband antennas
conical monopolar antenna
Dielectric substrates
Dielectrics
Exact sciences and technology
Feeds
Frequency
Gain
Ground plane
Impedance matching
omnidirectional radiation patterns
Polarization
Radiocommunications
Shape
Simulation
Telecommunications
Telecommunications and information theory
Three dimensional displays
Wavelengths
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Description
Summary: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.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2008.924775