New Estimation Method for the Operational Low Frequency End of Antipodal Vivaldi Antennas

Hien Ba CHU  Hiroshi SHIRAI  Chien Dao NGOC  

IEICE TRANSACTIONS on Electronics   Vol.E99-C   No.8   pp.947-955
Publication Date: 2016/08/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E99.C.947
Type of Manuscript: PAPER
Category: Electromagnetic Theory
tapered slot antennas,  antipodal Vivaldi antennas,  ultra wideband,  

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A simple approach is presented for designing an antipodal Vivaldi antenna in this paper. A new and better estimation of the low frequency end of the operational range is shown. Final dimensions of the antenna parameters are determined by using the High Frequency Structure Simulator (HFSS). The proposed antenna has a simple configuration but exhibits low return loss, good radiation characteristics, and high and flat gain in the operating ultra wideband frequency range (3.1-10.6 GHz). Lastly, the fabrication has been done along with the specification to confirm the properties by measurements.