A low-profile, wideband, vertically-polarized antenna with directional radiation patterns in the azimuth plane

Author

Ghaemi, Kasra ; Behdad, Nader

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Wisconsin-Madison, Madison, WI, USA

fYear

2014

fDate

2-5 Dec. 2014

Firstpage

265

Lastpage

266

Abstract

A low-profile, wideband, vertically-polarized antenna with directional radiation characteristics in the azimuth plane is proposed. The antenna is composed of four half-loops with the shape of bent diamond arms that are fed at the center and short circuited to the ground plane at their ends. Two of the loops are fed in phase and the other two are fed out of phase. Then, these two antenna arrays are fed using a proper feed network to obtain a cardioid-shaped radiation pattern over a very large bandwidth (6:1). The antenna has electrical dimensions of 0.77λ_min × 0.77λ_min × 0.09λ_min at its lowest frequency of operation.

Keywords

antenna feeds; antenna radiation patterns; broadband antennas; directive antennas; electromagnetic wave polarisation; monopole antenna arrays; antenna feed network; azimuth plane; cardioid-shaped radiation pattern; directional radiation characteristics; ground plane; low-profile wideband vertically-polarized antenna array; vertical monopole; Antenna arrays; Antenna radiation patterns; Azimuth; Bandwidth; Broadband antennas; Feeds; Gain;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (ISAP), 2014 International Symposium on

Conference_Location

Kaohsiung

Type

conf

DOI

10.1109/ISANP.2014.7026632

Filename

7026632