Method for transconductance linearization for DC-coupled...

Details Method for transconductance linearization for DC-coupled... Method for transconductance linearization for DC-coupled...

2007-08-07

2007-08-07

Nguyen, Khai M. (Department: 2819)

Pulse or digital communications

Transceivers

C455S076000, C455S192200, C455S326000, C455S333000, C330S261000, C330S285000, C330S295000, C330S296000

Reexamination Certificate

active

11599247

ABSTRACT:
A Class AB voltage-to-current converter includes a plurality of DC coupled transconductance stages that produce a linearized output and a biasing circuit. The biasing circuit generates a primary bias voltage that is greater than a generated secondary bias voltage. As such, the first transconductance stage becomes active before the second transconductance stage with respect to the magnitude of a differential input voltage, thereby allowing the transconductance of the secondary transconductance stage to be added (or subtracted) from the transconductance of the primary stage to improve the overall transconductance of the Class AB voltage-to-current converter. As each of the plurality of transconductance stages is biased differently from the others, the various transconductance stages are biased on to differing amounts based upon the biasing signals as well as the input signal.

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