Squaring cells and multipliers using summed exponentials

Details Squaring cells and multipliers using summed exponentials Squaring cells and multipliers using summed exponentials

2005-03-01

2005-03-01

Nguyen, Minh (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

Exponential

C327S356000

Reexamination Certificate

active

06861890

ABSTRACT:
A squaring cell combines first and second exponential currents to approximate square law behavior. The exponential currents can be generated by current stacks having pairs of series-connected junctions. The exponential currents can be altered to change the shape of the exponential currents to better approximation true square law behavior. A multiplier combines four exponential currents to approximate a multiplication function. The exponential currents in the multiplier can be generated by current stacks that are cross-connected so as to generate two output currents, the difference of which represents the multiplication of two input signals.

REFERENCES:
patent: 4047235 (1977-09-01), Davis
patent: 4156283 (1979-05-01), Gilbert
patent: 5077541 (1991-12-01), Gilbert
patent: 5107150 (1992-04-01), Kimura
patent: 5298811 (1994-03-01), Gilbert
patent: 5432478 (1995-07-01), Gilbert
patent: 5684431 (1997-11-01), Gilbert et al.
patent: 5714911 (1998-02-01), Gilbert
patent: 5909136 (1999-06-01), Kimura
patent: 5952867 (1999-09-01), Choi
patent: 6052349 (2000-04-01), Okamoto
patent: 0 665 639 (1995-08-01), None
Gilbert, Barrie; Wideband Negative-Current Mirror;Electronics Letters; vol. 11, No. 6, Mar. 20, 1975; pp. 126-127.
Gilbert, Barrie;Current-mode Circuits From A Translinear Viewpoint: A Tutorial; Analogue IC design: the current mode approach; Peter Peregrinus, Ltd., London, United Kingdom; 1990 (pp. 11-91).

Affiliated with

Also associated with

Rating

Squaring cells and multipliers using summed exponentials does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Squaring cells and multipliers using summed exponentials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Squaring cells and multipliers using summed exponentials will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3445925