Low voltage mixer with improved gain and linearity

Details Low voltage mixer with improved gain and linearity Low voltage mixer with improved gain and linearity

2009-04-28

2010-10-19

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

Combining of plural signals

C327S355000, C455S326000

Reexamination Certificate

active

07816970

ABSTRACT:
A frequency mixing apparatus with improved voltage gain and linearity is provided. The frequency mixing apparatus includes a transconductor, a separator, and a switching unit. A voltage gain of the transconductor is controllable, and the transconductor converts a Radio Frequency (RF) signal into a current signal under control of a self bias. The separator transfers the current signal to the switching unit. The switching unit outputs a signal having a frequency corresponding to one of a sum and a difference of a frequency of the RF signal and a frequency of a Local Oscillation (LO) signal by performing a switching operation according to the LO signal.

REFERENCES:
patent: 6205325 (2001-03-01), Groe
patent: 7016664 (2006-03-01), Souetinov
patent: 7254380 (2007-08-01), Kuei-Ann et al.
patent: 7342432 (2008-03-01), Kim et al.
patent: 7356317 (2008-04-01), Xu et al.
patent: 2005/0124311 (2005-06-01), Mahmoudi et al.

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