Low-noise, high-linearity analog multiplier

Details Low-noise, high-linearity analog multiplier Low-noise, high-linearity analog multiplier

2006-08-08

2006-08-08

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

Combining of plural signals

Reexamination Certificate

active

07088169

ABSTRACT:
An analog multiplier for multiplying a first analog voltage signal at a first frequency by a second analog voltage signal at a second frequency, comprising a first stage for converting the first analog voltage signal into a first and a second current signals, and a second stage comprising a first and a second cross-coupled current-switching pairs, driven by the second voltage signal, the first and second current-switching pairs having respective current inputs for receiving the first and the second current signals, respectively. Parasitic capacitances are inherently associated with each current input of the current-switching pairs. A compensation circuit is coupled to the current inputs of the current-switching pairs for compensating the parasitic capacitances.

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