Modified TEM horn antenna for wideband applications

Author

Karshenas, F. ; Mallahzadeh, A.R. ; Imani, A.

Author_Institution

Fac. of Eng., Shahed Univ., Tehran

fYear

2009

fDate

15-18 Feb. 2009

Firstpage

1

Lastpage

5

Abstract

This paper presents a novel method to enhance the pattern characteristics of the TEM horn antenna for 2-19 GHz frequency band. The conventional TEM horn antenna introduces some fluctuations in the main lobe radiation pattern over the center frequencies, which are 10-15 GHz. This motivated us to propose a new method to remove the aforementioned impact by carving an arc shape to the open end of exponentially tapered plates. The associated curvature of this arc is optimized to completely remove the aforementioned fluctuation. The simulation results show that the improved TEM horn antenna structure exhibits low VSWR as well as good radiation pattern over 2-19 GHz frequency band.

Keywords

UHF antennas; antenna radiation patterns; broadband antennas; horn antennas; microwave antennas; associated curvature; exponentially tapered plate; frequency 2 GHz to 19 GHz; lobe radiation pattern; transverse electromagnetic horn antenna; wideband application; Antenna radiation patterns; Broadband antennas; Electromagnetic waveguides; Electronic equipment testing; Fluctuations; Frequency; Horn antennas; Radar antennas; Waveguide components; Waveguide transitions; TEM horn antenna; pattern fluctuation; wideband antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antenna Technology and Applied Electromagnetics and the Canadian Radio Science Meeting, 2009. ANTEM/URSI 2009. 13th International Symposium on

Conference_Location

Toronto, ON

Print_ISBN

978-1-4244-2979-0

Electronic_ISBN

978-1-4244-2980-6

Type

conf

DOI

10.1109/ANTEMURSI.2009.4805077

Filename

4805077