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Multisection vialess microstrip‐line balun with backside aperture and floating patches
Author(s) -
Sun S.,
Zhu L.,
Wei L.,
Peng H.,
Ang K. S.
Publication year - 2007
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.22104
Subject(s) - balun , microstrip , aperture (computer memory) , microwave , electrical impedance , engineering , electrical engineering , optics , line (geometry) , mode (computer interface) , acoustics , electronic engineering , physics , telecommunications , computer science , antenna (radio) , geometry , mathematics , operating system
A novel multisection vialess balun without any via‐hole is presented based on the microstrip structure. It consists of three cascaded quarter‐wave (λ/4) edge‐coupled line sections. In the middle section, a backside aperture is constituted to increase even‐mode impedance of a coupled line while two unequal patches are formed inside the aperture to reduce its relevant odd‐mode impedance. This balun is then designed and measured to show its good balance performance in amplitude and phase. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 253–254, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22104