Low flicker noise current-folded mixer

Details Low flicker noise current-folded mixer Low flicker noise current-folded mixer

2007-08-07

2007-08-07

Nguyen, Simon (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C455S310000, C455S317000, C455S319000, C455S323000

Reexamination Certificate

active

10898510

ABSTRACT:
The current-folded mixer of this invention comprises an input stage and a switching stage. The input stage receives a radio frequency input RF and generates a modulated bias current to the switching stage. The switching stage has a switching pair, connected to a common node, to receive an input signal and said modulated bias current to generate an output signal in accordance with the input signal and the modulated bias current. The current-folded mixer uses a capacitor to separate the bias current of the input stage and the switching stage and an inductor in the switching stage to supply bias current.

REFERENCES:
patent: 6704559 (2004-03-01), Hageraats
patent: 6871057 (2005-03-01), Ugajin et al.
patent: 7107035 (2006-09-01), Otaka
patent: 2002/0004376 (2002-01-01), Lee et al.
patent: 2004/0227559 (2004-11-01), Erba et al.
patent: 2004/0259519 (2004-12-01), Su
patent: 2005/0064838 (2005-03-01), Oh et al.

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