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Class Information
Number: 327/346
Name: Miscellaneous active electrical nonlinear devices, circuits, and systems > Specific input to output function > Exponential
Description: Subject matter wherein the output signal is proportional to an input signal that is raised to a particular algebraic power.










Sub-classes under this class:

Class Number Class Name Patents
327/349 Square function 83
327/347 Square root 34


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8305133 Implementing a piecewise-polynomial-continuous function in a translinear circuit Nov. 6, 2012
8130215 Logarithmic amplifier Mar. 6, 2012
7994840 RMS detector with automatic gain control Aug. 9, 2011
7969223 Temperature compensation for logarithmic circuits Jun. 28, 2011
7902901 RF squarer Mar. 8, 2011
7791400 Square-function circuit Sep. 7, 2010
7777551 Multiplier circuit Aug. 17, 2010
7546332 Apparatus and methods for implementation of mathematical functions Jun. 9, 2009
7545197 Anti-logarithmic amplifier designs Jun. 9, 2009
7514980 Exponential function generator and variable gain amplifier using the same Apr. 7, 2009
7382174 A-AB transconductor Jun. 3, 2008
7375602 Methods for propagating a non sinusoidal signal without distortion in dispersive lossy media May. 20, 2008
7352231 Method and circuit for perturbing removable singularities in coupled translinear loops Apr. 1, 2008
7268608 Wideband squaring cell Sep. 11, 2007
7180358 CMOS exponential function generating circuit with temperature compensation technique Feb. 20, 2007
6930531 Circuit and method to compensate for RMR variations and for shunt resistance across RMR in an open loop current bias architecture Aug. 16, 2005
6930532 Exponential conversion circuit and variable gain circuit Aug. 16, 2005
6882185 Exponential current generator and method Apr. 19, 2005
6879204 Exponential conversion circuit Apr. 12, 2005
6873210 Single-ended-to-differential converter with common-mode voltage control Mar. 29, 2005
6777999 Exponential conversion circuit and variable gain circuit Aug. 17, 2004
6771111 Precision analog exponentiation circuit and method Aug. 3, 2004
6750715 Logarithmic IF amplifier with dynamic large signal bias circuit Jun. 15, 2004
6734736 Low power variable gain amplifier May. 11, 2004
6727756 Single-ended-to-differential converter with common-mode voltage control Apr. 27, 2004
6570447 Programmable logarithmic gain adjustment for open-loop amplifiers May. 27, 2003
6549057 RMS-to-DC converter with balanced multi-tanh triplet squaring cells Apr. 15, 2003
6404245 Compact cubic function generator Jun. 11, 2002
6369618 Temperature and process independent exponential voltage-to-current converter circuit Apr. 9, 2002
6215292 Method and device for generating an output current Apr. 10, 2001
6212369 Merged variable gain mixers Apr. 3, 2001
6204719 RMS-to-DC converter with balanced multi-tanh triplet squaring cells Mar. 20, 2001
6160427 Compact cubic function generator Dec. 12, 2000
6084471 Soft-limiting control circuit for variable gain amplifiers Jul. 4, 2000
5999053 Current steering variable gain amplifier with linearizer Dec. 7, 1999
5952867 Exponentiator circuit and method for generating decibel steps of programmable current gain Sep. 14, 1999
5754013 Apparatus for providing a nonlinear output in response to a linear input by using linear approximation and for use in a lighting control system May. 19, 1998
5744993 Read channel for at least partially offsetting nonlinear signal effects associated with the use of magneto-resistive heads Apr. 28, 1998
5714902 Polynomial function generation circuit Feb. 3, 1998
5703524 Piece-wise linear approximation of a dB linear programmable gain amplifier Dec. 30, 1997
5686852 Circuit arrangement for forming the square root of an input signal Nov. 11, 1997
5572166 Linear-in-decibel variable gain amplifier Nov. 5, 1996
5557227 Economical generation of exponential and pseudo-exponential decay functions in digital hardware Sep. 17, 1996
5537071 Method and circuit for dividing an input signal into amplitude segment signals and for non-linearly processing the amplitude segment signals on the basis of the value of each amplitude segment Jul. 16, 1996
5534813 Anti-logarithmic converter with temperature compensation Jul. 9, 1996
5506536 Differential amplifier with exponential gain characteristic Apr. 9, 1996
5488289 Voltage to current converter having feedback for providing an exponential current output Jan. 30, 1996
5461337 System for providing linear time position variations in write precompensation circuit for use in disk drive systems Oct. 24, 1995
5442311 System and method for controlling a gain circuit Aug. 15, 1995
5436587 Charge pump circuit with exponetral multiplication Jul. 25, 1995

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