Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Reexamination Certificate
2007-06-26
2007-06-26
Urban, Edward F. (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
C455S326000, C455S333000, C327S113000, C327S116000
Reexamination Certificate
active
10860837
ABSTRACT:
A mixer circuit (50) includes a first switching mixer (20A) with a first desired signal input (RF+ and RF−), a first switching signal input (LO+& LO−), and a first output (IF+ and IF−), a second switching mixer (20B), and a third switching mixer (20C) with corresponding desired signal inputs, switching signal inputs, and outputs. An overall input signal to the mixer circuit is fed to an input port (56) of the first switching mixer, an output from an output port (57) of the first switching mixer is fed to an input port (58) of the second switching mixer, the output from an output port (59) of the second switching mixer is fed to an input port (60) of the third switching mixer, and an overall output of the mixer circuit can be an output from an output port (62) of the third switching mixer.
REFERENCES:
patent: 5303417 (1994-04-01), Laws
patent: 6125272 (2000-09-01), Bautista et al.
patent: 6144846 (2000-11-01), Durec
patent: 6603964 (2003-08-01), Rowley et al.
patent: 7113755 (2006-09-01), Abdelli
patent: 2003/0104799 (2003-06-01), Hayek et al.
patent: 2003/0157918 (2003-08-01), Gamliel
patent: 2003/0169089 (2003-09-01), Manku et al.
patent: 2004/0121751 (2004-06-01), Shen
Jackson Blane J
Motorola Inc.
Urban Edward F.
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