Patents
Sitemap › H03 - Basic electronic circuitry › H03H - Impedance networks, e.g. resonant circuits; Resonators › H03H 11 - Networks using active elements
Patents for H03H 11 - Networks using active elements (9,098)
12/1995
12/12/1995CA2060117C Predistorter for linearization of electronic and optical signals
12/06/1995EP0685936A2 Adaptive antenna matching
12/06/1995EP0685935A1 Filter arrangement
12/05/1995US5473278 Filter circuit including a switch circuit inserted between input terminal and RC filter
11/1995
11/30/1995WO1995032547A1 Impedance circuit for a miniature hearing aid
11/28/1995US5471168 Quality factor tuning system for a tunable filter and current rectifier used therein
11/16/1995WO1995031038A1 A quasi-passive switched-capacitor (sc) delay line
11/15/1995CN1111793A Active filter control apparatus
11/08/1995CN1111417A Circuit for semiconductor
11/07/1995CA2058369C Current sink
11/02/1995WO1995029532A1 Impedance emulator
11/02/1995EP0680143A2 CMOS termination resistance circuit
10/1995
10/31/1995US5463475 Semiconductor delay line driven by an input signal-derived reference signal
10/31/1995US5463349 Programmable operation transconductance amplifier
10/31/1995US5463346 Fast response low-pass filter
10/31/1995US5463343 Adjustable delay circuit of the current intensity having delay as a hyperbolic function
10/31/1995US5463342 Method and apparatus for enhancing signal-to-noise ratio and improving sensitivity and signal detector employing same
10/31/1995US5463309 Variable voltage to current conversion circuit
10/25/1995EP0678979A2 Coupler communication systems which utilize more than one frequency band
10/25/1995EP0678978A2 Circuit with adjustable frequency response
10/25/1995EP0420974B1 Tunable resonance amplifier
10/25/1995CN1110885A Bridge-tap equalizer method and apparatus
10/24/1995US5461336 Filter circuit
10/24/1995US5461335 Delay circuit manufacturable by semiconductor elements
10/24/1995US5461265 High-frequency variable impedance circuit having improved linearity of operating characteristics
10/18/1995EP0677924A1 Adjustable delay circuit
10/18/1995EP0677922A2 Fast response low-pass filter
10/18/1995CA2146292A1 Fast response low-pass filter
10/17/1995US5459791 Audio frequency filter
10/17/1995US5459440 Automatic impedance matching with potential monitoring means
10/17/1995US5459311 Fiber-optic system with delay line for large dynamic range and low pulse width distortion of initial data bits
10/14/1995CA2146196A1 Adjustable delay circuit
10/12/1995WO1995027344A1 An electronic filter
10/11/1995EP0676862A1 Direct-current impressing circuit
10/05/1995WO1995024089A3 A termination network and a control circuit
10/05/1995DE19511370A1 Analogue variable attenuator with FET switch and three current sources
10/04/1995EP0675595A1 Fully integrated ramp generator with relatively long time constant
10/04/1995CN1109657A Audio amplifier
10/03/1995US5455523 Method and apparatus for non-linear transmission line termination
09/1995
09/28/1995WO1995026076A1 Connecting arrangement
09/27/1995CN1109228A Attenuator circuit apparatus
09/26/1995US5453710 Quasi-passive switched-capacitor (SC) delay line
09/19/1995US5451915 Active filter resonator and system and negative resistance generator usable therein
09/19/1995US5451894 Digital full range rotating phase shifter
09/19/1995US5451852 Control system having signal tracking window filters
09/14/1995WO1995024712A2 Adjustable resistance device with control circuit
09/13/1995EP0671633A2 Testing variably controllable delay units
09/13/1995CN1108445A Analog filter circuit and semiconductor integrated circuit device using the same
09/08/1995WO1995024089A2 A termination network and a control circuit
09/08/1995CA2181678A1 A termination network and a control circuit
09/05/1995US5448207 Attenuator circuit apparatus
09/05/1995US5448196 Phase shift circuit
08/1995
08/30/1995EP0669712A1 Control of frequency and/or phase characteristic in an (audio) amplifier
08/29/1995US5446415 Intermediate frequency amplifier circuit
08/29/1995US5446413 Impedance circuit for a miniature hearing aid
08/23/1995EP0667992A1 Load current fundamental filter with one cycle response
08/23/1995EP0667952A1 Compound electronic filter for flowmeters
08/22/1995US5444414 Low voltage filter transconductance cell
08/17/1995WO1995022200A1 Voltage controlled phase shifter with unlimited range
08/17/1995WO1995022198A1 Low noise wide band amplifier
08/16/1995EP0667677A1 Device for multiplying a capacitance by a variable coefficient for adjusting a filter cut-off frequency and filter comprising same
08/16/1995EP0667057A1 Active impedance termination
08/16/1995EP0667054A1 Harmonic controller for an active power line conditioner
08/15/1995US5442808 System and device transmitting information by changing a substrate temperature
08/15/1995US5442352 Linear attenuator for current-mode digital-to-analog converter (DAC) or the like
08/10/1995WO1995021488A1 Filtering
08/09/1995EP0666645A1 Circuit with gain control
08/08/1995US5440280 Digital microwave multi-bit attenuator
08/08/1995US5440264 Frequency tuning system for tuning a center frequency of an analog bandpass filter
08/03/1995WO1995020812A1 Tracking filter for periodic signals
08/02/1995EP0665646A1 Filter circuit
08/02/1995EP0665640A1 Transconductance floating resistor circuit
08/02/1995EP0664937A1 Line driver with adaptive output impedance
08/01/1995US5438304 Automatically tuned notch filter for providing bandpass and band reject signals
08/01/1995US5438301 Modem having a phase corrector and a voltage controlled oscillator implemented using a multi-stage ring oscillator
08/01/1995US5438288 High differential output impedance setter
07/1995
07/25/1995US5436882 Method and device for improving digital audio sound
07/25/1995US5436550 AC-DC converter having saw-tooth wave generating circuit in active filter
07/25/1995US5435188 Electronic filter for flowmeters with compound controls
07/19/1995EP0663729A1 Linear attenuator for current-mode digital-to-analog converter (DAC) or the like
07/19/1995EP0663723A1 Filter circuit
07/19/1995EP0663722A1 Area-efficient current-input filter, virtual ground circuit used in same, and method therefor
07/19/1995EP0663719A2 Analog filter circuit and semiconductor integrated circuit device using the same
07/18/1995US5434867 Audio amplifier arrangement having a volume dependent tone control
07/18/1995US5434535 RC filter for low and very low frequency applications
07/12/1995CN2203512Y Nonlinear Zener safety grid
07/11/1995US5432430 Phase shifting circuit and method for generating several output signals of different phases
07/05/1995EP0661806A1 Voltage controlled capacitance
07/04/1995US5430413 Semiconductor device
07/04/1995US5430337 Transconductor stage
07/04/1995CA2026345C Auto-tuning circuit for an active filter used in video signal processing
06/1995
06/28/1995EP0660514A1 Non-integral delay circuit
06/28/1995EP0660513A2 An electronic circuit to replace a light emitting diode and a light dependent resistor
06/28/1995EP0660512A1 Phase shifter amplifier and its application in a recombiner circuit
06/28/1995EP0659311A1 Bridge-tap equalizer method and apparatus
06/20/1995US5426393 Tunable filter network having DC accuracy
06/14/1995EP0657071A1 Monolithically integrated, tunable resonant circuit and circuitry made thereof
06/14/1995DE4443954A1 Equaliser improving noise characteristic of semiconductor component
06/13/1995US5425106 Integrated circuit for audio enhancement system
06/13/1995US5424710 Power coupler for coupling power from a transmission line to a node thereon
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