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Modified Compact Antipodal Vivaldi Antenna for 4–50-GHz UWB Application

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3 Author(s)
Jian Bai ; Dept. of Electr. & Comput. Eng., Univ. of Delaware, Newark, DE, USA ; Shouyuan Shi ; Prather, D.W.

A novel way capable of improving low-frequency performance of Vivaldi antennas is presented in this paper. Traditional Vivaldi antennas are modified via introducing the loading structure, i.e., circular-shape-load or slot-load, to match the termination. This modified antenna has been demonstrated to have the impedance bandwidth of over 25:1. It also exhibits symmetric radiation patterns in both the E- and H-plane in addition to the gain varying from 3 to 12 dBi in the measurement bandwidth of 4-50 GHz.

Published in:

Microwave Theory and Techniques, IEEE Transactions on  (Volume:59 ,  Issue: 4 )

Date of Publication:

April 2011

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