PASSIVE MIXER AND FOUR-PHASE CLOCKING METHOD AND APPARATUS
摘要
According to one embodiment, a radio frequency receiver comprises a quadrature mixer configured to convert radio frequency signals to baseband signals or intermediate frequency signals. The quadrature mixer comprises an in-phase passive mixer and a quadrature-phase passive mixer. Each passive mixer comprises a mixer core having a plurality of mixer input switch transistors and a plurality of output switch transistors connected to the mixer input switch transistors. Clock circuitry generates a plurality of quadrature pulsed clock signals and delayed versions of the quadrature pulsed clock signals. The quadrature pulsed clock signals and the delayed versions of the quadrature pulsed clock signals drive the mixer input switch transistors and the output switch transistors.
申请公布号
WO2009130209(A3)
申请公布日期
2010.06.03
申请号
WO2009EP54725
申请日期
2009.04.21
申请人
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL);MU, FENGHAO;TILLMAN, FREDRIK