Journal of Applied Science and Engineering

Published by Tamkang University Press

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A New TEM Horn Antenna Designing Based on Plexiglass Antenna Cap

 2018

 Volume 21, Issue 3

Lin Teng and Jie Liu

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

Received: November 9, 2017
Accepted: January 12, 2018
Publication Date: August 16, 2018

上傳圖片

The structure of TEM.

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

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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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