Transferred-impedance filtering in RF receivers

Details Transferred-impedance filtering in RF receivers Transferred-impedance filtering in RF receivers

2006-03-17

2009-06-02

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

C330S302000

Reexamination Certificate

active

07541863

ABSTRACT:
The specification and drawings present a new method and apparatus for using transferred-impedance filtering in RF (radio frequency) receivers (e.g., inside of a mobile communication device), wherein said filtering can be done with MOS-switches transferring impedance of a regular RC or RCL circuit to RF frequency filtering inside an RFIC (radio frequency integrated circuit).

REFERENCES:
patent: 6133793 (2000-10-01), Lau et al.
patent: 6831497 (2004-12-01), Koh et al.
patent: 6937644 (2005-08-01), Pan et al.
patent: 6990327 (2006-01-01), Zheng et al.
patent: 7187230 (2007-03-01), Vilhonen
patent: 7266360 (2007-09-01), Kang et al.
patent: 2002/0183016 (2002-12-01), Kemmochi et al.
patent: 2004/0239442 (2004-12-01), Wilcox

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