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COMMON-GATE COMMON-SOURCE TRANSCONDUCTANCE STAGE FOR RF DOWNCONVERSION MIXER
COMMON-GATE COMMON-SOURCE TRANSCONDUCTANCE STAGE FOR RF DOWNCONVERSION MIXER
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机译:射频下变频混频器的共门共源跨导级
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摘要
In an embodiment, a wireless device receiver chain includes a mixer with a common-gate common-source (CGCS) input stage. Differential signals from an off-chip matching network may be input to the CGCS input stage of the mixer, which downconverts the signals to baseband or some intermediate frequency. The input stage includes a pair of NMOS transistors in a common-gate configuration and a pair of PMOS transistors in a common-source configuration. A potential advantage of the CGCS input stage over the existing CGO transconductance stage configuration is that by adding a common-source stage through the PMOS differential-pair, the transconductance gain is decoupled from the high Q matching network.
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