Irregular TEM‐horn with lens made of an artificial dielectric

Abstract

This article presents design of TEM‐horn with nonuniform law of wave resistance variation along longitudinal axis, in aperture of which an artificial dielectric lens is located. Characteristics of developed antenna in ultra wide frequency band, obtained during mathematical modeling and confirmed by results of experimental study, are presented.

Ultrawideband TEM horn with inhomogeneous dielectric medium

“…This assumption is not completely correct, but it gives us simple law of material distribution. The similar approach was proposed in paper, 13 either. In the following subsections we present two obtained distribution formulas.…”

High power balanced TEM horn antenna for ultra wide band radiator

“…13 A time and frequency model approach for analysis of UWB antennas in general has been reported in Duroc et al 14 Design of TEM horn along with its optimization for GPR applications is reported in Jamali and Marklein 15 and Tan et al 16 Effect of aperture matching through addition of cylindrical sections at the TEM horn aperture is discussed for 0.5-7 GHz frequency range in Singh and Sarkar. 17 A half TEM horn antenna for 5 ns rise time pulse is reported by Umbarkar et al 18 TEM horn antenna used for near field microwave imaging in the frequency range of 3-10 GHz is reported in Reza et al 19 A modified TEM horn antenna with segmented structure for oil well monitoring in frequency range of 1.4-11 GHz is reported in Oloumi et al 20 A novel ultra-wideband combined antenna for a frequency band of 0.18-30 GHz, which is a combination of TEM horn and magnetic dipole has been discussed in Mehrdadian et al 21 An irregular TEM horn with artificial dielectric for 1-10 GHz frequency band is reported in Ashikhmin et al 22 A compact high-power UWB antenna with exponential taper is discussed in Yadav and Chittora. 23 In most of the literature available on TEM horn antennas, either frequency domain results or time domain results are discussed for high-power systems.…”