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Design of a compact branch‐line coupler using capacitance loading
Author(s) -
Jing Tao,
Shi XiaoWei,
Guo YuChun,
Chen Lei,
Chen XiaoQun
Publication year - 2009
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.23992
Subject(s) - capacitance , microwave , bandwidth (computing) , line (geometry) , electrical engineering , engineering , electronic engineering , reduction (mathematics) , telecommunications , physics , mathematics , geometry , electrode , quantum mechanics
This article presents a compact branch‐line coupler (BLC) for balanced‐type circuit application. It was designed by utilizing cascading multisection and capacitance‐loading technique for bandwidth increase and size reduction individually. The proposed BLC was simulated and fabricated. Its physical length reduces by 28.7%, while it performs as good as the conventional one. The simulated and the measured results have a good agreement. The method is valid for compact and good performance BLC design. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 198–200, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23992