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.
https://hal-supelec.archives-ouvertes.fr/hal-00360766
Contributor : Sébastien Palud
<>
Submitted on : Wednesday, February 11, 2009 - 7:33:21 PM
Last modification on : Friday, November 16, 2018 - 1:29:43 AM
