


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.
Subclasses under this class:
Patents under this class:
Patent Number 
Title Of Patent 
Date Issued 
8305133 
Implementing a piecewisepolynomialcontinuous 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 
Squarefunction circuit 
Sep. 7, 2010 
7777551 
Multiplier circuit 
Aug. 17, 2010 
7546332 
Apparatus and methods for implementation of mathematical functions 
Jun. 9, 2009 
7545197 
Antilogarithmic amplifier designs 
Jun. 9, 2009 
7514980 
Exponential function generator and variable gain amplifier using the same 
Apr. 7, 2009 
7382174 
AAB 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 
Singleendedtodifferential converter with commonmode 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 
Singleendedtodifferential converter with commonmode voltage control 
Apr. 27, 2004 
6570447 
Programmable logarithmic gain adjustment for openloop amplifiers 
May. 27, 2003 
6549057 
RMStoDC converter with balanced multitanh triplet squaring cells 
Apr. 15, 2003 
6404245 
Compact cubic function generator 
Jun. 11, 2002 
6369618 
Temperature and process independent exponential voltagetocurrent 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 
RMStoDC converter with balanced multitanh triplet squaring cells 
Mar. 20, 2001 
6160427 
Compact cubic function generator 
Dec. 12, 2000 
6084471 
Softlimiting 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 magnetoresistive heads 
Apr. 28, 1998 
5714902 
Polynomial function generation circuit 
Feb. 3, 1998 
5703524 
Piecewise 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 
Linearindecibel variable gain amplifier 
Nov. 5, 1996 
5557227 
Economical generation of exponential and pseudoexponential decay functions in digital hardware 
Sep. 17, 1996 
5537071 
Method and circuit for dividing an input signal into amplitude segment signals and for nonlinearly processing the amplitude segment signals on the basis of the value of each amplitude segment 
Jul. 16, 1996 
5534813 
Antilogarithmic 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 


