Patents
Sitemap › H03 - Basic electronic circuitry › H03L - Automatic control, starting, synchronisation, or stabilisation of generators of electronic oscillations or pulses › H03L 7 - Automatic control of frequency or phase; Synchronisation
Patents for H03L 7 - Automatic control of frequency or phase; Synchronisation (37,643)
08/1991
08/13/1991US5039955 Circuit for generating a stable control signal
08/13/1991US5039889 Phase comparison circuit
08/07/1991WO1991012666A1 Phase-locked circuit and frequency multiplier obtained
08/07/1991EP0440449A2 Fast-switching frequency synthesizer
08/07/1991EP0440405A1 Channel selecting circuit
08/07/1991EP0440389A2 Tuned ring oscillator and clock generation circuit provided therewith
08/07/1991CN1053717A Method and arrangement for frequency synthesis
08/06/1991US5038120 Frequency modulated phase locked loop with fractional divider and jitter compensation
08/06/1991US5038117 Multiple-modulator fractional-N divider
08/06/1991US5038116 Oscillator synchronizing circuit stabilized against loss of sync signals
08/06/1991US5038115 Method and apparatus for frequency independent phase tracking of input signals in receiving systems and the like
08/03/1991WO1991011852A1 Fast-switching frequency synthesizer
07/1991
07/31/1991EP0438867A2 Multiple-modulator fractional-N divider
07/31/1991EP0438620A1 Method and circuit arrangement for the minimization of an a.c. component in the phase detector output signal of a phase locked loop
07/30/1991US5036529 Digital auto-phase-controlled retiming circuit
07/30/1991US5036299 Method and apparatus for reducing microwave oscillator output noise
07/30/1991US5036298 Clock recovery circuit without jitter peaking
07/30/1991US5036297 High-speed digital PLL device
07/30/1991US5036295 Frequency synthesizer allowing rapid frequency switching
07/30/1991US5036294 Phase locked loop having low-frequency jitter compensation
07/30/1991US5036293 Oscillator for use with video signal time scaling apparatus
07/30/1991US5036216 Video dot clock generator
07/24/1991EP0438309A2 Interpolating phase-locked loop frequency synthesizer
07/24/1991EP0438260A2 Capacitor precharge for reduced synthesizer lock time
07/24/1991EP0438039A1 A method and arrangement for frequency synthesis
07/24/1991CN1053334A Phase-locked loop having variable bandwidth
07/23/1991US5034748 Narrow band automatic phase control tracking circuitry
07/23/1991US5034706 Voltage-controlled variable oscillator, in particular for phase-lock loops
07/23/1991US5034703 Frequency synthesizer
07/23/1991CA2019297A1 Multiple-modulator fractional-n divider
07/23/1991CA1286736C Voltage controlled oscillator with high speed current switching
07/20/1991CA2033747A1 Capacitor precharge for reduced synthesizer lock time
07/17/1991EP0316340A4 Data input circuit with digital phase locked loop
07/16/1991WO1991011055A1 A method and arrangement for frequency synthesis
07/16/1991US5032800 Tunable oscillator with noise degeneration
07/16/1991CA1286372C Precise phase start-up voltage controlled oscillator with accurate duty cycle
07/10/1991EP0436246A1 Character generator comprising a startstop oscillator
07/09/1991US5031230 Frequency, phase and modulation control system which is especially useful in simulcast transmission systems
07/09/1991US5030927 Reactance control circuit with a DC amplifier for minimizing a variation of a reference reactance value
07/03/1991EP0435552A2 A phase locked loop with reduced frequency/phase lock time
07/02/1991US5028887 Direct digital synthesizer driven phase lock loop frequency synthesizer with hard limiter
07/02/1991US5028885 Phase-locked loop signal generation system with control maintenance
06/1991
06/26/1991EP0434527A1 Microwave synthesizer with a fractional divider
06/26/1991EP0434109A1 Voltage-controlled oscillator
06/26/1991EP0434066A2 Frequency agile microwave signal generator
06/26/1991EP0433416A1 Device with a multiplicity of independent, identical oscillators operating synchronously
06/25/1991US5027429 Frequency modulator utilizing frequency synthesizer
06/25/1991US5027373 N-pi phase/frequency detector
06/25/1991US5027087 Fast-switching frequency synthesizer
06/25/1991US5027085 Phase detector for phase-locked loop clock recovery system
06/23/1991CA2032419A1 Fractionary division microwave synthesizer
06/19/1991EP0433120A1 PLL synthesizer circuit
06/19/1991EP0432539A2 Phase locked loop circuit
06/19/1991EP0246269B1 Digital phase-frequency discriminator comprising simplified reset means
06/18/1991US5025461 Method of and circuit arrangement for recovering a bit clock from a received digital communication signal
06/12/1991CN1012872B Circuit for recovering carrier in digital transmission systems
06/11/1991US5023939 FM tuner with band extraction and optimization of a PLL FM demodulator
06/11/1991US5023572 Voltage-controlled oscillator with rapid tuning loop and method for tuning same
06/05/1991EP0430493A2 Signal processor
06/05/1991EP0430343A2 Digital phase locked loop
06/05/1991EP0430291A2 A data transfer system
06/05/1991EP0429912A2 Synchronisation with the edge transition insensitive delay line
06/05/1991EP0429859A2 Frequency generator, which can be digitally frequency modulated
06/05/1991EP0429858A2 Reference frequency generator
06/04/1991US5022058 Timing signal recovery circuit for a data transmission system
06/04/1991US5021754 Fractional-N synthesizer having modulation spur compensation
06/04/1991US5021752 Voltage controlled oscillator (VCO)
06/04/1991US5021749 Switchable capacitor loop filter for phase locked loop
05/1991
05/30/1991WO1991007828A1 Digital circuit for a frequency modulation and carrier synthesis in a digital radio system
05/30/1991WO1991007824A1 Frequency synthesizer
05/30/1991WO1991007822A1 Loop filter for a frequency synthesizer
05/30/1991WO1991007821A1 Multiloop synthesizer with optimal spurious performance
05/29/1991EP0429421A1 A phase-locked loop having a variable bandwidth
05/29/1991EP0429217A2 Frequency synthesiser
05/29/1991EP0428869A1 Phase detector suitable for use in phase lock loop
05/28/1991US5019790 Method for eliminating subharmonic false locking in sampler and frequency multiplier based source locking systems
05/28/1991US5019785 Frequency synthesizing device
05/23/1991DE3938292A1 Tuning circuitry with turnable VCO circuit - has PLL synchronised system, amplifier, and switches widening PLL voltage stroke
05/22/1991EP0427717A1 Phase-locked loop circuit.
05/21/1991US5018170 Variable data rate clock synthesizer
05/21/1991US5018169 High resolution sample clock generator with deglitcher
05/21/1991US5017889 Digital phase-locked loop using a tapped delay line in a phase meter
05/21/1991US5017801 Method and apparatus for converting a gap-infested read-in clock into a gap-free read-out clock
05/21/1991CA1284363C Digital free-running clock synchronizer
05/21/1991CA1284362C High order digital phase locked loop system
05/21/1991CA1284361C Analog phase locked loop
05/16/1991WO1991007016A1 A phase locked loop for producing a reference carrier for a coherent detector
05/16/1991CA2029981A1 Edge transition insensitive delay line apparatus & method
05/15/1991EP0427509A2 Method and apparatus for clock recovery and data retiming for random NRZ data
05/14/1991WO1991007823A1 A phase-locked loop having a variable bandwidth
05/14/1991US5016257 Receiver for bandspread signals, particularly GPS receiver
05/14/1991US5016019 Method and apparatus for processing synthetic aperture aerial signals
05/14/1991US5015971 Frequency agile microwave signal generator
05/14/1991US5015970 Clock recovery phase lock loop having digitally range limited operating window
05/08/1991EP0188503B1 Device for tuning a vco to the carrier frequency of each radar pulse
05/07/1991US5014061 Adaptive multifrequency signal combining system
05/07/1991CA1283957C Pll frequency synthesizer
05/07/1991CA1283956C Clock synchronizing circuit including a voltage controlled oscillator
05/07/1991CA1283955C Method and arrangement for adjusting and regulating the frequency of a signal generator
05/02/1991DE3935829A1 Linearising circuit with frequency correction self-equalisation - generates in certain time intervals calibration mode for control circuit calibration
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