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International Journal of Antennas and Propagation
Volume 2012, Article ID 341206, 9 pages
http://dx.doi.org/10.1155/2012/341206
Research Article

Design of an Impulse Radiating Antenna Using a Curved TEM-Wire Fed Parabola

1Department of Electronic Engineering, Sogang University, 1 Sinsu-dong, Mapo-gu, Seoul, Republic of Korea
2R&D Department 2, Hanwha Corporation Gumi Plant, 258 Gongdan-dong, Gumi-si, Gyungsangbuk-do, Republic of Korea

Received 18 April 2012; Accepted 25 June 2012

Academic Editor: Hon Tat Hui

Copyright © 2012 Donghyun Lee et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A design procedure for a TEM-wire fed parabolic antenna is given for impulse radiation, which is suitable for low cost fabrication. A simple wire-type TEM horn and a parabolic reflector are used to achieve ultra-wide bandwidth and high directivity at the same time. Equations for parametric curves of a TEM-wire horn are presented and are used to investigate the relation among their shapes, bandwidth, and directivity. It is also found that wire separation near the focal point limits the high frequency directivity.