Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Amplitude control
Reexamination Certificate
2005-02-23
2008-11-18
Wells, Kenneth B. (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Amplitude control
C333S08100R
Reexamination Certificate
active
07453307
ABSTRACT:
A process independent voltage controlled logarithmic attenuator has an attenuator control stage block having a first input coupled to a controlled input and a second input coupled to an offset generator. An attenuator transistor is coupled to the attenuator controlled stage block. An output of the attenuator controlled stage block is both slope and maximum voltage definable for a process independent design.
REFERENCES:
patent: 5339272 (1994-08-01), Tedrow et al.
patent: 5880618 (1999-03-01), Koen
patent: 6906588 (2005-06-01), Mouret et al.
Chan Wilson Wai-Sum
Ho Ka-Wai
Ko Isacc Terasuth
Tsui Hau-Yiu
Moy Jeffrey D.
Supertex Inc.
Weiss & Moy P.C.
Wells Kenneth B.
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