Wideband and compact quasi‐Yagi antenna integrated with balun of microstrip to slotline transitions. Issue 2 (1st January 2013)

• Record Type: Journal Article
• Authors: Nguyen, P. T.; Abbosh, A.; Crozier, S.
• Is Part Of: Electronics letters. Volume 49:Issue 2(2013)
• Page Start: 88
• Page End: 89
• Publication Date: 2013-01-01
• Subjects: antenna feeds -- baluns -- coplanar waveguides -- microstrip antenna arrays -- microwave imaging -- slot antenna arrays -- slot lines -- ultra wideband antennas -- Yagi antenna arrays; wideband quasiYagi antenna -- compact quasiYagi antenna -- microstrip‐to‐slotline transition -- microstrip‐to‐coplanar stripline balun -- antenna design -- circular array -- microwave imaging system -- antenna feeding structure -- ultra‐wideband balun -- fractional bandwidth -- front‐to‐back ratio; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2012.3192
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : 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.