Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Reexamination Certificate
2006-12-06
2010-06-15
Nguyen, Tony T (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
C455S114100, C455S152100
Reexamination Certificate
active
07738852
ABSTRACT:
Disclosed is a mixer comprising: a switching circuit, having a first pair of differential signal nodes and a second pair of differential signal nodes, for switching according to a local oscillation signal; an amplifying stage circuit, for receiving an input signal and amplifying the input signal; a load circuit, for serving as the loading of the mixer and generating an output signal of the mixer; a common-mode feedback circuit, for receiving the output signal and generating a feedback signal according to the output signal; a first current source, for receiving the feedback signal and generating a first current according to the feedback signal; and a second current source, for receiving the feedback signal and generating a second current according to the feedback signal.
REFERENCES:
patent: 3241078 (1966-03-01), Jones
patent: 5675392 (1997-10-01), Nayebi
patent: 5901350 (1999-05-01), Stoichita
patent: 6255889 (2001-07-01), Branson
patent: 6438365 (2002-08-01), Balteanu
patent: 6850753 (2005-02-01), Zhang et al.
patent: 6865382 (2005-03-01), Behzad
patent: 6889037 (2005-05-01), Darabl
patent: 2006/0229046 (2006-10-01), Bult et al.
patent: 330354 (1998-04-01), None
patent: 484257 (2002-04-01), None
patent: 589783 (2004-06-01), None
Tang, “Design of S-GHz CMOS RF Receiver Front-End Circuits,” Chapter 5, Doctorate Dissertation, Dept. of EECS, National Taiwan University, Taiwan, 2002. pp. 93-114.
Lee and Choi, “Current-Reuse Bleeding Mixer,” Electronic Letters, Apr. 13, 2000, vol. 36, No. 8, IEE 2000, pp. 696-697.
“A 1.9GHz Wide-Band IF Double Conversion CMOS Integrated Receiver for Cordless Telephone Applications”(Rudell et al) 1997. Retrieved from the Internet on the Apr. 4, 2007 via: http://kabuki.eecs.berkeley.edu/%7Ejrudell/papers/isscc/.
Gilbert, Barrie: The Micromixer: A Highly Linear Variant of the Gilbert Mixer Using a Bisymmetric Class-AB Input Stage, In: Solid-State Circuits, IEEE Journal, vol. 32, No. 9, pp. 1412 to 1423, Sep. 1997.
Lin Ying-Hsi
Lin Ying-Yao
Hsu Winston
Nguyen Tony T
Realtek Semiconductor Corp.
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