Open AccessWideband and compact quasi‐Yagi antenna integrated with balun of microstrip to slotline transitions
Author(s) -
Nguyen P. T.,
Abbosh A.,
Crozier S.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2012.3192
Subject(s) - balun , microstrip antenna , wideband , stripline , return loss , dipole antenna , microstrip , patch antenna , coaxial antenna , antenna (radio) , antenna measurement , physics , acoustics , electronic engineering , electrical engineering , optics , engineering
A wideband quasi‐Yagi antenna utilising a microstrip‐to‐coplanar stripline balun is presented. The antenna is designed to be compact, directional and wideband so that it can be used to form a circular array for a microwave imaging system. The feeding structure of the antenna includes an ultra‐wideband balun that is formed using a pair of microstrip to slotline transitions. The simulated and measured results of the proposed antenna indicate more than 70% fractional bandwidth with more than 10 dB return loss, more than 18 dB front‐to‐back ratio and around 4 dBi gain.