Design of a Wideband Antipodal Vivaldi Antenna with an Asymmetric Parasitic Patch

An antipodal Vivaldi antenna with a compact parasitic patch to overcome radiation performance degradations in the high-frequency band is proposed. For this purpose, a double asymmetric trapezoidal parasitic patch is designed and added to the aperture of an antipodal Vivaldi antenna. The patch is des...

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Bibliographic Details
Published inJournal of Electromagnetic Engineering and Science Vol. 18; no. 1; pp. 29 - 34
Main Authors Bang, Jihoon, Lee, Juneseok, Choi, Jaehoon
Format Journal Article
LanguageEnglish
Published 한국전자파학회JEES 01.01.2018
The Korean Institute of Electromagnetic Engineering and Science
한국전자파학회
Subjects
Antipodal Vivaldi Antenna
High Gain
Parasitic Antenna
Ultra-Wideband Antenna
전자/정보통신공학
Antipodal Vivaldi Antenna
Parasitic Antenna
High Gain
Ultra-Wideband Antenna
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Summary:An antipodal Vivaldi antenna with a compact parasitic patch to overcome radiation performance degradations in the high-frequency band is proposed. For this purpose, a double asymmetric trapezoidal parasitic patch is designed and added to the aperture of an antipodal Vivaldi antenna. The patch is designed to efficiently focus the beam toward the end-fire direction at high frequencies by utilizing field coupling between the main radiating patch and the inserted parasitic patch. As a result, this technique considerably improves the gain and stability of radiation patterns at high frequencies. The proposed antenna has a peak gain greater than 9 dBi over the frequency range of 6–26.5 GHz.
ISSN:2671-7255
2234-8409
2671-7263
2234-8395
DOI:10.26866/jees.2018.18.1.29