A receiver with a balanced I/Q transformer is described. In an exemplary design, the receiver includes an LNA that amplifies a received RF signal and provides a single-ended RF signal to the balanced I/Q transformer. The balanced I/Q transformer includes at least one primary coil and first and second secondary coils. The first secondary coil is magnetically coupled to the at least one primary coil and provides a first differential RF signal to a first mixer. The second secondary coil is magnetically coupled to the at least one primary coil and provides a second differential RF signal to a second mixer. The first and second mixers downconvert the first and second differential RF signals with I and Q LO signals, respectively, and provide differential I and Q downconverted signals. The primary and secondary coils may be fabricated on two conductive layers of an integrated circuit.
申请公布号
WO2010132870(A1)
申请公布日期
2010.11.18
申请号
WO2010US35079
申请日期
2010.05.17
申请人
QUALCOMM INCORPORATED;CHANG, LI-CHUNG;BHAGAT, MAULIN P.;LEE, HANIL;SRIDHARA, RAVI
发明人
CHANG, LI-CHUNG;BHAGAT, MAULIN P.;LEE, HANIL;SRIDHARA, RAVI