Design and implementation of micromachined lumped quadrature (90) hybrids
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abstract
To reduce the chip size of a quadrature hybrid at frequencies below K-band, lumped components have been employed to replace the transmission line segments. Systematic analysis and design technique has been developed. For the first time, X-band lumped quadrature hybrids with low insertion loss and wide bandwidth have been fabricated using a micromachined process technology. Approximately, two order of magnitude area reduction has been achieved by this approach compared with distributed designs.
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2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157)