Patents
Sitemap › H03 - Basic electronic circuitry › H03D - Demodulation or transference of modulation from one carrier to another › H03D 1 - Demodulation of amplitude-modulated oscillations
Patents for H03D 1 - Demodulation of amplitude-modulated oscillations (4,890)
02/1992
02/26/1992EP0472510A2 Logarithmic amplifier/detector delay compensation
02/20/1992WO1992003015A1 Quadrature distortion cancellation system
02/20/1992CA2086239A1 Method and apparatus for canceling quadrature distortion as for video signals have in-phase and quadrature phase components
02/19/1992EP0471412A2 Receivers for frequency modulated transmissions
02/12/1992CN1058686A Quadrature distortion cancellation system
01/1992
01/23/1992WO1992001337A1 Radio receivers
12/1991
12/27/1991EP0462495A2 Simplified interpolative analog-digital converter for bandpass signals
12/18/1991EP0461720A1 Electronic arrangement for receiving a modulated carrier signal
12/17/1991US5073904 Digital signal processing type demodulation method and demodulation circuit
12/17/1991US5073898 Communication device
12/17/1991CA1293302C Gain and phase correction in a dual branch receiver
12/10/1991CA1293027C Method of, and demodulator for, digitally demodulating an ssbsignal
12/03/1991US5070303 Logarithmic amplifier/detector delay compensation
11/1991
11/27/1991EP0458452A2 Quadrature demodulator
10/1991
10/15/1991US5057786 Quadrature amplitude modulation wave demodulator provided with band-pass filters for fixed equalizer
10/10/1991DE4110743A1 HF signal direct demodulation for car-phone - has low pass filters in multiplier paths for better signal rejection
10/08/1991CA1290403C Quadrature receiver
10/02/1991EP0448835A1 Phase splitter
10/02/1991DE4009729A1 Converter for digital radio receiver system - uses phase locked loop controlled by DC voltage to provide reference mixer signal
09/1991
09/17/1991US5049829 Logarithmic amplifier with sequentially limiting amplifier stages
09/17/1991CA1289203C Synchronous demodulator with digital signal output
09/11/1991EP0445664A2 Circuit arrangement for detecting identification signals
09/11/1991EP0445522A2 Satellite transmission capturing method for GPS receiver
09/10/1991US5048059 Log-polar signal processing
07/1991
07/30/1991CA1287125C High signal to noise ratio amplitude detector
07/11/1991DE3943072A1 Ein interpolativer a/d umsetzer fuer bandpasssignale An interpolative a / d converter for bandpass signals
07/09/1991US5030846 Zener diode detector circuit
06/1991
06/28/1991WO1991010283A1 Interpolative analog/digital converter for band-pass signals
06/28/1991CA2072568A1 Interpolative analog/digital converter for band-pass signals
06/26/1991EP0434293A2 Method and device for the detection of an FM or PM modulated signal
06/19/1991CN1012925B Circuit arrangement for linearly amplifying and demodulating am-modulated signal, and integrated semiconductor for said circuit arrangement
05/1991
05/29/1991EP0259419B1 Double digital demodulator
05/21/1991US5018016 Detecting circuit which reduces buzz in a sound signal
05/21/1991US5018015 Adaptive keyed synchronous detector
05/16/1991WO1991007016A1 A phase locked loop for producing a reference carrier for a coherent detector
05/16/1991DE3937259A1 Single-double sideband filtering and demodulating - converting signal with or without carrier into LF range from IF plane
05/14/1991US5015963 Synchronous demodulator
04/1991
04/03/1991EP0420128A2 Detection circuit for amplitude modulated signals
03/1991
03/26/1991US5003272 Circuit arrangement for synchronizing a frequency-controllable oscillator
03/07/1991DE3929197A1 Rectifier circuit with high dynamics - prevents dynamics limitation by adding several rectifier branches
03/05/1991CA1281080C Digital zero-if selectivity section
02/1991
02/26/1991US4996448 Low power peak detector/buffer with fast charge-up time
02/20/1991EP0413475A2 Analogue/digital phase locked loop
02/20/1991EP0413472A2 Switched capacitor pilot phase or magnitude detector
02/19/1991US4994769 SSB modulation and demodulation apparatus
02/12/1991CA1280178C Temperature stabilized rf detector
02/06/1991EP0411207A2 Digital receiver operating at sub-nyquist sampling rate
02/01/1991CA2004248A1 Digital receiver operating at sub-nyquist sampling rate
01/1991
01/30/1991CN1011458B Controlled oscillator
01/29/1991US4988951 Quadrature phase demodulator capable of operating under a wide input dynamic range
01/15/1991US4985688 Modulation system capable of accurately compensating for nonlinearities of an amplifier connected thereto
01/15/1991US4985685 Detector circuit including current attenuating circuit and capacitor
01/15/1991CA1279110C Temperature stabilized rf detector
01/01/1991US4982193 Analogue to digital conversion: method and apparatus therefor
12/1990
12/13/1990DE4018614A1 Frequency converter for quadrature modulator or demodulator
12/12/1990EP0401771A2 Circuit arrangement for frequency conversion
11/1990
11/27/1990US4973914 Digitized synchronous demodulator
11/20/1990US4972512 Circuit for linearly amplifying and demodulating an AM-modulated signal, and integrated semiconductor element for such circuit
11/13/1990US4970474 Analog/digital phase locked loop
10/1990
10/31/1990EP0395368A2 Quadrature phase demodulator capable of operating under a wide input dynamic range
10/03/1990CA2013424A1 Microwave electric power receiver
10/02/1990US4961184 Integrate and hold amplifier
09/1990
09/27/1990DE3909947A1 AM detector circuit having a coupling coil
09/06/1990DE3906723A1 Circuit arrangement for processing audio signals
09/04/1990US4955039 Quadrature receiver
08/1990
08/29/1990EP0384615A1 Biasing circuitry for a diode detector
08/28/1990US4953182 Gain and phase correction in a dual branch receiver
08/15/1990CN1009238B Tv signal frequency transforming circuit
08/09/1990WO1990009060A1 Integrate and hold amplifier
08/07/1990US4947408 Digital carrier demodulator employing components working beyond normal limits
08/07/1990US4947141 Oscillator network for radio receiver
07/1990
07/31/1990US4945313 Synchronous demodulator having automatically tuned band-pass filter
07/26/1990DE3908765C1 Circuit for forming current differences and the use of this circuit
07/24/1990US4944010 Stereo demodulator and a demodulating method thereof
07/17/1990US4942365 Synchronous phase and/or frequency detection system
07/11/1990EP0377519A2 Modulation system capable of accurately compensating for nonlinearities of an amplifier connected thereto
07/04/1990EP0375717A1 A controlled oscillator
07/04/1990CN1008677B Direct hybrid synchrodyne receiver
06/1990
06/27/1990EP0375497A1 Device for the direct modulation or demodulation of ultra-high frequencies
06/27/1990EP0374996A1 FM-receiver
06/20/1990CA2005755A1 Direct microwave modulation and demodulation device
06/12/1990US4933974 Switched capacitor pilot phase and magnitude detector
06/12/1990US4933972 Stereo multiplex demodulator
06/06/1990EP0371548A1 Directly mixing synchronous AM receiver
06/06/1990EP0371447A2 Detector circuit
05/1990
05/29/1990US4929905 Synchronous demodulation circuit for a carrier-modulated television signal
05/23/1990DE3938643A1 Reconstructing lost DC components of IF signals - applying correction signal to each fault-laden IF signal and generating corrected signal
05/22/1990CA1269452A1 Controlled oscillator
05/22/1990CA1269451A1 Oscillator frequency control arrangement for a stereo decoder
05/15/1990US4926443 Correction circuit for a digital quadrature-signal pair
05/02/1990EP0366264A2 High signal to noise ratio amplitude detector
04/1990
04/11/1990EP0363226A2 Coherent demodulating arrangement for use in digital radio communications system
04/10/1990CA1267698A1 Circuitry for multiplying a pcm signal by a sinusoid
04/05/1990WO1990003699A1 Log-polar signal processing
04/04/1990EP0361947A2 Synchronous sampling system
04/03/1990US4914677 Digital lock-in amplifier
03/1990
03/28/1990EP0360770A1 Log-polar signal processing
03/28/1990EP0359839A1 Synchronous Demodulator
03/28/1990EP0256076B1 Analogue to digital conversion: method and apparatus therefor
03/07/1990EP0356556A1 Multi-input four quadrant multiplier
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