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)
07/1998
07/08/1998EP0852154A1 Device for filtering cardiac activity signals
07/07/1998US5778308 Adaptive antenna matching
07/07/1998US5777463 Device for auto-adapting to the impedance of a supply line
07/02/1998WO1998028842A1 Digitally controlled programmable attenuator
07/01/1998EP0851586A1 Integrated circuit including an asymmetrizer
07/01/1998EP0851578A2 Filter circuit
06/1998
06/25/1998DE19732142A1 Variable delay circuit
06/24/1998EP0849878A2 Improvements in or relating to integrated circuits
06/24/1998EP0849877A1 Microwave active notch filter and operating method with photonic bandgap crystal feedback loop
06/24/1998EP0849823A1 Glass antenna system with an impedance matching network
06/24/1998EP0849820A2 Tunable microwave network using microelectromechanical switches
06/24/1998CN1185869A Circuit arrangement with afilter quadripole
06/23/1998US5771262 Apparatus in a data telecommunication network
06/23/1998US5770960 Process tolerant delay circuit
06/16/1998US5768177 Controlled delay circuit for use in synchronized semiconductor memory
06/16/1998US5767756 Active quadrature power splitter
06/16/1998US5767719 Delay circuit using capacitor and transistor
06/11/1998WO1998025341A1 Filter circuit
06/10/1998EP0847137A1 Biquadratic basic cell for programmable analog time-continuous filter
06/09/1998US5764178 Delay characteristic compensation circuit for memory device
06/09/1998US5764100 Filter
06/02/1998US5760642 Filter circuit using a junction capacitor of a semiconductor
06/02/1998US5760641 Controllable filter arrangement
05/1998
05/26/1998US5758193 Interface for connecting terminal device mainframe to plural kinds of switch units having different numbers of switches therein
05/26/1998US5757921 Radio communication apparatus having common oscillator applied for PLL, conversion and scramble/descramble circuits
05/26/1998US5757232 High-impedance circuit having reduced stray capacitance
05/26/1998US5757220 Digitally controlled programmable attenuator
05/22/1998WO1998021743A1 Increasing the dynamic range of image sensors
05/13/1998EP0559684B1 Universal filter
05/12/1998US5751192 Integrated circuit and method for generating a transimpedance function
05/12/1998US5751185 Low pass filter circuit utilizing transistors as inductive elements
05/12/1998US5751184 Low electrical power consumption filter circuit
05/07/1998WO1998019395A1 Delay time control circuit
05/05/1998US5748000 Error correction method for transmission measurements in vector network analyzers
04/1998
04/29/1998CN1180458A Frequency-dependent resistor
04/28/1998US5745581 Tracking filter for periodic signals
04/28/1998US5745001 Active filter circuit apparatus
04/28/1998CA2027806C Carbon desorption heater
04/22/1998EP0837560A2 A circuit arrangement for generating signals with different phases
04/21/1998US5742204 Digitally programmable differential attenuator with tracking common mode reference
04/21/1998US5742199 Filter circuit and electronic apparatus
04/21/1998US5742093 Frequency compensator
04/14/1998US5740096 Filter circuit for communication
04/14/1998US5740090 Filter, repetitive control system and learning control system both provided with such filter
04/08/1998EP0834990A1 Digital programmable phase shifter and analog-digital converter using such a phase shifter
04/07/1998US5737461 Methods and filter for isolating upstream ingress noise in a bi-directional cable system
04/07/1998US5737368 Matched filter
04/07/1998US5736883 Wide range phase shift with single adjustment
04/07/1998US5736840 Phase shifter and communication system using the phase shifter
04/07/1998US5736801 Filter circuit and control circuit for controlling a rotor
04/02/1998WO1998013894A1 Miniature active conversion between slotline and coplanar waveguide
04/02/1998CA2266588A1 Miniature active conversion between slotline and coplanar waveguide
03/1998
03/31/1998US5734299 Microwave VCO having reduced supply voltage
03/31/1998US5734295 Quadrature demodulator having active filters formed with emitter follower output stages
03/31/1998US5734294 Large swing wide band high order programmable active filters
03/31/1998US5734284 RC circuit
03/24/1998US5731740 Circuit bias via transformer
03/24/1998US5731737 Method and apparatus for reducing clock switching noise in continuous time filters
03/18/1998EP0829962A2 Circuit for determining and storing a signal mean value
03/18/1998EP0829960A2 Improvements in or relating to electronic filters
03/18/1998EP0829959A2 Filter circuit
03/18/1998EP0829135A1 Phase shifter for use in a quadrature clock generator
03/18/1998CN1176528A Integrated circuit and method for generating transimpedance function
03/12/1998WO1998010527A1 Transistor ratio controlled cmos transmission line equalizer
03/12/1998WO1998010512A1 Resistorless operational transconductance amplifier circuit
03/11/1998EP0828344A2 Integrated circuit and method for generating a transimpedance function
03/10/1998US5726941 Semiconductor integrated circuit
03/10/1998US5726613 Active inductor
03/10/1998US5726600 NPN bipolar circuit topology for a tunable transconductance cell and positive current source
03/10/1998US5726599 Device for multiplying a capacitance by a variable coefficient to adjust a filter cut-off frequency
03/10/1998US5726582 Control circuit for keeping constant the impedance of a termination network
03/05/1998WO1998004037A3 Electronic circuit comprising complementary transconductors for filters and oscillators
03/04/1998EP0827275A1 Frequency-dependent resistor
03/04/1998EP0332636B1 A signal-shaping network
03/04/1998CN1175127A Device for stabilizing limiting frequency by using mutual conductance
03/04/1998CN1037651C Frequency and Q adjustable non-symmetric active trap
03/03/1998US5724006 Circuit arrangement with controllable transmission characteristics
02/1998
02/25/1998EP0825712A2 Electronically tuned matching networks using adjustable inductance elements and resonant tank circuits
02/25/1998EP0824795A2 Circuit arrangement with a filter quadripole
02/25/1998EP0824788A1 Isolating circuit for telephone apparatus
02/24/1998US5721505 Delay circuit manufacturable by semiconductor elements
02/24/1998CA2131296C Impedance generator for a telephone line interface circuit
02/17/1998US5719518 Variable electronic resistor having parallel phase-inverted variable semiconductor channels with common control input and current-to-voltage converters
02/11/1998CN1173078A Filter Circuit
02/10/1998US5717324 Intermediate potential generation circuit
02/10/1998US5717323 Resistance reference circuit
02/04/1998EP0822554A2 Method and apparatus for adaptively processing the readback signal in a read channel device for digital storage
02/04/1998CN1172565A Coupling arrangement in terminating circuit
02/04/1998CN1172559A 调谐电路 Tuning circuit
02/04/1998CN1172558A Tuning circuit
02/03/1998US5714911 Quadrature oscillator having amplitude control means based on a trigonometric identity
01/1998
01/29/1998WO1998004038A1 A method and device for continuous-time filtering in digital cmos process
01/29/1998WO1998004037A2 Electronic circuit comprising complementary transconductors for filters and oscillators
01/29/1998CA2260915A1 A method and device for continuous-time filtering in digital cmos process
01/28/1998EP0821478A2 Electrical muting circuit
01/28/1998EP0821477A2 Digitally controllable attenuator circuit for audio
01/28/1998EP0821473A1 A microwave VCO having reduced supply voltage
01/27/1998US5712592 RF plasma power supply combining technique for increased stability
01/15/1998WO1998001952A1 Phase locked loop with improved phase-frequency detection
01/14/1998EP0818885A2 Filter circuit
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