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http://dx.doi.org/10.5515/KJKIEES.2012.23.2.159

Performance Evaluation of Antipodal Vivaldi Antenna in the Time- and Frequency-Domains for IR-UWB Systems Application  

Koh, Young-Mok (Department of Electronic Engineering, Kwangwoon University)
Kim, Keun-Yong (Department of Electronic Engineering, Kwangwoon University)
Ra, Keuk-Hwan (Department of Electronic Engineering, Kwangwoon University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.23, no.2, 2012 , pp. 159-168 More about this Journal
Abstract
In this paper, we designed the antipodal vivaldi antenna for IR-UWB systems application and evaluated IR-UWB antenna performance for the ultra wideband impulse signal transmission in the time- and frequency-domain. The designed antipodal vivaldi antenna was fabricated using FR-4 substrate which thickness 1.6 mm, dielectric constant ${\epsilon}_r=4.7$ and $tan{\delta}=0.002$. We measured the return loss, far filed radiation pattern at the anechoic chamber in the frequency-domain. We also performed the pulse fidelity analysis in the time-domain using nano-second impulse signal transmission and demonstrated the feasibility of ultra wideband signal stable transmission in the UWB band. The designed and fabricated antipodal vivaldi antenna could be emitting and receiving the IR-UWB signal while preserving low pulse distortion and good radiation pattern in time- and frequency-domain.
Keywords
Vivaldi Antenna; Antipodal Vivaldi Antenna; IR-UWB Antenna; Travelling Antenna; Pulse Fidelity;
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