Design of a shaped omni directional circular waveguide antenna

Author

Verma, Pawan Kumar ; Kumar, Raj ; Singh, Mahakar

Author_Institution

Defence Electron. Applic. Lab., Dehradun, India

fYear

2009

fDate

14-16 Dec. 2009

Firstpage

1

Lastpage

3

Abstract

This paper describes the design, simulation and optimization of a shaped omni-directional circular waveguide antenna at 38 GHz. The proposed antenna consists of a rectangular waveguide, rectangular to circular transition, circular waveguide, metallic cone and a dielectric holder. The designed antenna has been simulated on ANSOFT HFSS EM Simulator using proper boundary conditions. Circular waveguide is excited by TM₀₁ mode to properly generate the required pattern. The radiation pattern of circular waveguide has been modified using metallic cone. The antenna has omni pattern in azimuth plane and -10 to +45 degree coverage in elevation plane. The proposed antenna has the advantage to be robust, low cost and easy to fabricate being in waveguide configurations. Simulated VSWR less than 1.4 has been achieved for frequency range 37-40 GHz. The Omni gain of antenna is greater than 0 dBi over the frequency band.

Keywords

amplification; antenna radiation patterns; circular waveguides; rectangular waveguides; waveguide antennas; ANSOFT HFSS EM Simulator; dielectric holder; frequency 37 GHz to 40 GHz; metallic cone; radiation pattern; rectangular waveguide; shaped omni directional circular waveguide antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Electromagnetics Conference (AEMC), 2009

Conference_Location

Kolkata

Print_ISBN

978-1-4244-4818-0

Electronic_ISBN

978-1-4244-4819-7

Type

conf

DOI

10.1109/AEMC.2009.5430672

Filename

5430672