Mixer stage and method for mixing two signals having...

Details Mixer stage and method for mixing two signals having... Mixer stage and method for mixing two signals having...

2006-01-24

2009-12-15

Cox, Cassandra (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

Combining of plural signals

C327S359000

Reexamination Certificate

active

07633328

ABSTRACT:
A mixer stage is provided that includes an oscillator, a first input, a second input, a first output, a second output, a set of four controllable amplifier elements, and a first current source. The mixer stage further includes at least one second current source in addition to the first current source, the first current source and the at least one second current source can each be switched on and off by an associated switching input that is connected to an associated oscillator output. Pairs of amplifier elements of the set of four together with at least one of the at least two current sources in its switched-on state form a differential amplifier for an input signal present at the first input and the second input. A method for mixing frequencies is also provided.

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