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Merged quasi‐lumped branch‐line couplers for miniature balanced microwave attenuators
Author(s) -
Gardner P.,
Nagi H. S.
Publication year - 1996
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/(sici)1098-2760(19961205)13:5<264::aid-mop6>3.0.co;2-e
Subject(s) - microwave , monolithic microwave integrated circuit , electrical engineering , engineering , electronic engineering , hybrid coupler , power dividers and directional couplers , telecommunications , cmos , amplifier
Novel balanced shunt variable attenuators with quasi‐lumped branch‐line couplers are introduced. The inner branches of the two couplers are merged, and parasitic capacitances in the control devices are absorbed into the couplers, saving space. An HMIC example is described. The technique is attractive in MMIC design, where saving space reduces costs. © 1996 John Wiley & Sons, Inc.