Radio-frequency mixer arrangement

Details Radio-frequency mixer arrangement Radio-frequency mixer arrangement

2007-05-15

2007-05-15

Nguyen, Long (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

Combining of plural signals

C327S359000

Reexamination Certificate

active

10981345

ABSTRACT:
The present invention relates to a radio-frequency mixer arrangement in which a differential amplifier is connected to an input on a multiplier. The differential amplifier is arranged together with at least one capacitance in the feedback path of an operational amplifier. The at least one capacitance performs the function of an antialiasing filter. The feedback operational amplifier with the design described results in a highly linear output signal given low output noise and a low current requirement. The mixer proposed is particularly suitable for use in vector modulators or polar modulators in transmission paths in mobile radios.

REFERENCES:
patent: 5630228 (1997-05-01), Mittel
patent: 2004/0174199 (2004-09-01), Simon
patent: 101 32 802 (2002-11-01), None
patent: 10132802 (2002-11-01), None

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