Lin Teng1 and Jie Liu This email address is being protected from spambots. You need JavaScript enabled to view it.1

1Shenyang Normal University, Shenyang 110034, P.R. China


 

Received: November 9, 2017
Accepted: January 12, 2018
Publication Date: September 1, 2018

Download Citation: ||https://doi.org/10.6180/jase.201809_21(3).0012  

ABSTRACT


Traditionally, more pulse energy is distributed in the relatively low frequency range than that in the high frequency range for a short pulse excitation. However, obtaining a well low-frequency performance for the relatively limited spatial volume of antenna is very difficult. The design of traditional transverse electric magnetic (TEM) wave antenna is irregular. Therefore, we propose a new TEM horn antenna based on plexiglass antenna cap in this paper. We determine the structure of new model through analyzing feed-in structure and the radiation characteristics. Then we use 3-dimension electromagnetic field simulator to build up antenna model and finish related structural parameters optimization. Through simulation, we realize the smaller feed-in reflection of fast pulse. This model has better time-frequency characteristic. Finally, we make antenna experiments, which shows that the new horn antenna has good time domain fidelity and feed-in reflection properties. It is suitable for ultra-wide band antenna.


Keywords: Transverse Electric Magnetic Wave Antenna, Plexiglass Antenna Cap, 3-dimension Electromagnetic Field Simulator


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