Switched capacitor mixer circuit to attain high gain and...

Details Switched capacitor mixer circuit to attain high gain and... Switched capacitor mixer circuit to attain high gain and...

2005-10-18

2005-10-18

Vo, Nguyen T. (Department: 2685)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C327S113000

Reexamination Certificate

active

06957057

ABSTRACT:
By implementing the sampling process at an AC ground node, rather than at a signal side, and adding a gated transistor (610and620) in the signal path, the present invention reduces the interdependency between gain and linearity in a switched capacitor mixer circuit, supplies higher power without sacrificing area and simplifies the implementation of the RF switch. Charge boosting circuitry (630) allows a reduction in the effective size of a series switch (610and620) that follows a transconductance element (115).

REFERENCES:
patent: 5483696 (1996-01-01), Wheatley et al.
patent: 5805988 (1998-09-01), Clayton et al.
patent: 6275687 (2001-08-01), Lloyd
patent: 6529721 (2003-03-01), Tiller
patent: 6665527 (2003-12-01), Schiltz

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