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)
12/1991
12/27/1991EP0249623B1 Enhanced quadrature notch filter
12/24/1991US5075582 Integratable bandpass filter circuit
12/18/1991EP0461922A2 Integration circuit
12/16/1991CA2044501A1 Linear phase low pass filter
12/12/1991WO1991019353A1 Solid state mutually coupled inductors
12/10/1991US5072298 Auto-tuning circuit for an active filter used in video signal processing
12/10/1991US5072200 Combination of active and passive filters
12/10/1991US5071660 Scavenging oxygen from the interior of a container
12/10/1991CA1293033C Matching circuit
12/03/1991US5070305 Device for converting unbalanced analog electric signals into fully differential signals
11/1991
11/28/1991WO1991018427A1 Attenuator including a switchable gain stage
11/28/1991WO1991018341A1 Adaptive threshold suppression of impulse noise
11/21/1991EP0456921A1 Attenuator
11/14/1991WO1991017602A1 Delay circuit
11/14/1991DE4015019A1 Audio circuit with electronically controlled transmission - has feedback amplifier followed by voltage divider with controlled tap-off switching
11/13/1991EP0456321A2 Circuit with controlled transfer characteristic
11/06/1991EP0455298A1 Electrically controllable oscillator circuit and electrically controllable filter arrangement comprising said circuit
11/06/1991EP0455156A2 Circuit for generating an analog output signal, phase shifted by 90 degrees relative to an input signal
11/05/1991US5063356 Balanced filter circuit having a controllable balanced current multiplier
11/05/1991US5063311 Programmable time delay circuit for digital logic circuits
11/05/1991US5063309 High frequency continuous time filter
10/1991
10/24/1991DE4012265A1 Schaltungsanordnung fuer einen ausgangstankkreis einer mit frequenzumtastung betriebenen sender-endstufe Circuit arrangement for an output tank circuit powered by a frequency shift keying transmitter-power amplifier
10/23/1991EP0453158A2 Switched-current integrator circuit
10/23/1991EP0452776A2 A delay line providing an adjustable delay
10/23/1991EP0452452A1 Loop filter for a frequency synthesizer.
10/18/1991WO1991016762A1 Circuit for an output resonant cavity in a frequency-shift transmitter output stage
10/17/1991DE4110340A1 Digital multiplexer-controlled delay generator - uses groups of current-switching elements to vary propagation delay in connection input voltage to load
10/16/1991EP0451909A2 Predistortion linearizer for microwave power amplifiers
10/16/1991CN1055436A Integrated circuit for analog system
10/15/1991US5057722 Delay circuit having stable delay time
10/09/1991EP0450866A2 Semiconductor capacitor circuit
10/09/1991EP0450863A2 Integrated circuit for analog system
10/04/1991CA2039421A1 Semiconductor capacitor circuit
10/02/1991EP0449319A2 Circuit for reducing microphony
10/01/1991US5053650 Monolithic semiconductor integrated circuit device having current adjusting circuit
09/1991
09/30/1991CA2039363A1 Method and a circuit for reducing microphony
09/25/1991EP0448264A2 Phase shifting circuits
09/24/1991US5051628 Integrated filter circuit
09/24/1991CA1289619C Reactance circuit
09/18/1991EP0446275A1 Single input to differential output amplifier
09/17/1991US5049841 Electronically reconfigurable digital pad attenuator using segmented field effect transistors
09/17/1991US5049831 Single-ended input to differential output amplifier with integral two-pole filter
09/17/1991US5049764 Active bypass for inhibiting high-frequency supply voltage variations in integrated circuits
09/17/1991CA1289199C Phase shift circuit
09/11/1991CN1013912B Single input to differential output amplifier
09/10/1991US5048055 Multi-data rate selectable equalizer
09/10/1991US5047866 Comb filter type luminance/chrominance signal separation circuit
09/04/1991EP0445057A2 Multi-data rate selectable equalizer
09/04/1991EP0444838A2 Video signal reproducing apparatus
09/03/1991US5045822 Active power splitter
09/03/1991US5045731 Ultraminiature 180 degree phase shifter
09/03/1991US5045713 Multi-feedback circuit apparatus
09/03/1991CA1288486C Implementation and control of filters
08/1991
08/28/1991EP0443732A2 Load circuit for differential driver
08/27/1991US5043610 Electrical coupling circuit for passing a varying signal and blocking a direct component thereof
08/21/1991EP0442492A2 Active filter
08/20/1991US5041745 Failsafe bandpass filter/decoder
08/14/1991EP0441716A1 Voltage controlled resistor
08/14/1991EP0441378A2 Frequency and/or phase characteristic control circuit
08/13/1991US5039960 Wideband feedforward gallium arsenide AGC circuit
08/13/1991US5039893 Signal delay device
08/13/1991US5039891 Planar broadband FET balun
08/13/1991US5039890 Integratable filter circuit
08/08/1991DE4003417A1 Verfahren zum abgleich analoger schaltungsteile innerhalb einer integrierten schaltung Method of adjustment-analog circuit components within an integrated circuit
08/06/1991WO1991011857A1 Device for equalizing analog circuit parts in an integrated circuit
08/06/1991US5038328 Band pass filter
08/06/1991US5038113 Nonlinearity generator using FET source-to-drain conductive path
08/06/1991US5038060 Active very-high frequency circuit of the all-pass type utilizing an RC network whose capacitance is the gate-source capacitance of a FET
07/1991
07/31/1991EP0439230A2 Active bypass for inhibiting high-frequency supply voltage variations in integrated circuits
07/31/1991EP0438911A1 Integrated filter circuit
07/24/1991EP0437970A2 Analog filter
07/17/1991CN2081172U Impedance transformer
07/16/1991US5032801 High performance attenuator configuration
07/11/1991WO1991010286A1 Phase shifter
07/09/1991US5030927 Reactance control circuit with a DC amplifier for minimizing a variation of a reference reactance value
07/09/1991US5030848 Precision voltage divider
07/04/1991DE4041298A1 Band pass filter circuit with operational amplifier - has signal attenuator between external input terminal and amplifier non-inverting input terminal
07/03/1991EP0435472A2 Active filter
07/02/1991US5029284 Precision switchable bus terminator circuit
07/02/1991US5028884 Leapfrog filter having adjustable center frequency and quality factor
06/1991
06/19/1991EP0432895A2 Phase splitter arrangement
06/19/1991EP0432851A2 Variable bi-phase modulator circuits and variable resistors
06/13/1991WO1991008533A1 Terminal, data processor, switching unit, interface, and keyboard the latter three connected to the former two
06/12/1991EP0431900A2 Filter circuit
06/12/1991CN1012875B Impedance converter
06/11/1991US5023568 Combined current differencing and operational amplifier circuit
06/11/1991US5023491 Filter circuit arrangements with automatic adjustment of cut-off frequencies
06/06/1991DE3939906A1 Frequency filter of first or higher order - has circuit structure of analog components and delay of seperational amplifiers of constant group transition time
06/05/1991EP0429896A2 Tunable resonance amplifier or oscillator
06/04/1991US5021756 Transversal and recursive filters useable in a diplexer
05/1991
05/30/1991WO1991007822A1 Loop filter for a frequency synthesizer
05/28/1991US5020100 Telephone line loop current regulator
05/15/1991EP0427105A1 A circuit for processing the signal generated by an electromagnetic rotation sensor
05/14/1991US5015965 Predistortion equalizer with resistive combiners and dividers
05/07/1991US5014228 Method and apparatus for calibrating linear delay lines
04/1991
04/30/1991US5012384 Load circuit for a differential driver
04/30/1991US5012201 Variable impedance circuit
04/30/1991US5012141 Signal delay device using CMOS supply voltage control
04/23/1991US5010305 Microwave integrated circuit
04/16/1991US5008565 High-impedance FET circuit
1 ... 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 ... 91