Design of low profile antipodal Vivaldi antenna for ultra-wideband near-field imaging

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Abstract

In this paper, the design of a low profile circularly tapered antipodal Vivaldi antenna for array-based UWB nearfield imaging is presented. The proposed circular termination at the end of radiating flare and optimization of the feeding transition result in extension of the operational bandwidth and improvement of antenna impulse response. The antenna design with dimensions of 45×48.5 mm achieves satisfactory impedance matching and radiation across the frequency band from 2.7 to 35 GHz with more than 170% fractional bandwidth. Both SMA and 2.4 mm connectors are tested with the manufactured antenna in order to confirm its UWB performances.

Original languageEnglish
Title of host publicationEuCAP 2010 - The 4th European Conference on Antennas and Propagation
StatePublished - 2010
Externally publishedYes
Event4th European Conference on Antennas and Propagation, EuCAP 2010 - Barcelona, Spain
Duration: 12 Apr 201016 Apr 2010

Publication series

NameEuCAP 2010 - The 4th European Conference on Antennas and Propagation

Conference

Conference4th European Conference on Antennas and Propagation, EuCAP 2010
Country/TerritorySpain
CityBarcelona
Period12/04/1016/04/10

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