A dual reflector antenna for omnidirectional coverage

Author

Orefice, M. ; Pirinoli, P.

Author_Institution

Dipartimento di Elettronica, Politecnico di Torino, Italy

fYear

1993

fDate

June 28 1993-July 2 1993

Firstpage

274

Abstract

A new type of omnidirectional antenna is presented, consisting of a parabolic reflector and a conical reflector, arranged to radiate, with a proper choice of the feed, vertical polarization in the horizontal plane. The main characteristics of this antenna are the following: a radiated field which is vertically polarized; very low losses; a higher bandwidth with respect to an array; good matching at several frequencies (for a feed diameter ranging from 1 to 2 /spl lambda/), in a relatively wide bandwidth; the possibility of obtaining a prescribed power density distribution in the elevation angle by appropriately shaping the conical reflector; and ease of manufacture.<>

Keywords

antenna radiation patterns; electromagnetic wave polarisation; impedance matching; reflector antennas; bandwidth; characteristics; conical reflector; dual reflector antenna; losses; matching; omnidirectional antenna; parabolic reflector; power density distribution; vertical polarization; Antenna accessories; Antenna arrays; Antenna feeds; Bandwidth; Coaxial components; Dipole antennas; Directive antennas; Frequency; Polarization; Reflector antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1993. AP-S. Digest

Conference_Location

Ann Arbor, MI, USA

Print_ISBN

0-7803-1246-5

Type

conf

DOI

10.1109/APS.1993.385351

Filename

385351