Title :
Modified TEM horn antenna for wideband applications
Author :
Karshenas, F. ; Mallahzadeh, A.R. ; Imani, A.
Author_Institution :
Fac. of Eng., Shahed Univ., Tehran
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;
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
DOI :
10.1109/ANTEMURSI.2009.4805077
