| Patents for H03D 1 - Demodulation of amplitude-modulated oscillations (4,890) |
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| 01/23/1996 | US5487177 FM receiver comprising a circuit arrangement for determining the field strength of FM transmitters |
| 01/10/1996 | EP0691057A1 I/q quadraphase modulator circuit |
| 01/02/1996 | US5481227 Oscillator, synthesizer tuner circuit and AM synchronous detect circuit employing the oscillator |
| 12/20/1995 | EP0697114A4 Data recording system incorporating flaw detection circuitry |
| 12/19/1995 | US5477199 Digital quadrature amplitude and vestigial sideband modulation decoding method and apparatus |
| 12/05/1995 | US5473529 Circuit arrangement for rectifying an AC voltage signal with a plurality of differential amplifier stages |
| 11/29/1995 | EP0684697A1 Receiver for double sideband modulated signals |
| 11/28/1995 | US5471169 Circuit for sinking current with near-ground voltage compliance |
| 11/15/1995 | CN1111857A Radio receiver |
| 11/14/1995 | US5467399 Coherent signal generation in digital radio receiver |
| 11/07/1995 | US5465415 Even order term mixer |
| 11/07/1995 | US5465414 Automatic determination of the presence of a microwave signal and whether the signal is CW or pulsed |
| 10/26/1995 | DE4444870C1 Demodulator for complex-valued vestigial sideband signal |
| 10/24/1995 | US5461340 Amplitude demodulator for radio receivers to compensate for field strength influence |
| 10/24/1995 | US5461305 Preprocessing circuit for measuring signal envelope flatness degree in a reproducer |
| 10/19/1995 | WO1995028042A1 Heterodyne receiver having low intermediate frequency |
| 10/17/1995 | US5459432 Use of a chopper and a sigma-delta modulator for downconverting and digitizing an analog signal including information modulated by a carrier |
| 10/12/1995 | WO1995027330A1 Synchronous detector and methods for synchronous detection |
| 10/12/1995 | WO1995022884A3 Wideband square-law detector having a triangular frequency characteristic as well as a transmission system and a receiver including such a detector |
| 10/12/1995 | CA2186853A1 Synchronous detector and methods for synchronous detection |
| 10/03/1995 | US5455536 Demodulator circuit and demodulating method employing bit error rate monitor |
| 09/28/1995 | WO1995026105A1 Phase detector in a carrier recovery network for a vestigial sideband signal |
| 09/28/1995 | WO1995026101A1 Carrier recovery system for a vestigial sideband signal |
| 09/28/1995 | WO1995026075A1 Blind equalizer for a vestigial sideband signal |
| 09/28/1995 | WO1995026074A1 Carrier independent timing recovery system for a vestigial sideband modulated signal |
| 09/27/1995 | EP0673565A1 Generation of a coherent signal using an adaptive filter for cancelling and synchronous detection in a digital radio receiver. |
| 09/26/1995 | CA2054995C System and method for compensation of in-phase and quadrature phase and gain imbalance |
| 09/05/1995 | US5448770 Temperature-coefficient controlled radio frequency signal detecting circuitry |
| 08/31/1995 | WO1995022884A2 Wideband square-law detector having a triangular frequency characteristic as well as a transmission system and a receiver including such a detector |
| 08/30/1995 | EP0669721A2 Oscillator, synthesizer tuner circuit and AM synchronous detect circuit employing the oscillator |
| 08/22/1995 | US5444744 Phase locked loop for synchronizing with carrier wave |
| 08/08/1995 | US5440588 Method and apparatus for estimating maximum likelihood sequence in digital communication receiver with reduced real time calculations |
| 08/08/1995 | US5440586 Receiver having reduced influence of oscillator radiation and parasitic crosstalk effects on gain control |
| 08/02/1995 | EP0665639A1 Synchronous logarithmic amplifier |
| 07/27/1995 | WO1995020284A1 I/q quadraphase modulator circuit |
| 07/19/1995 | EP0497801B1 A phase locked loop for producing a reference carrier for a coherent detector |
| 07/06/1995 | WO1995018508A1 Circuit for the acquisition of a carrier signal by applying a substitute pilot to a synchronous demodulator |
| 06/27/1995 | US5428307 Closed-loop peak detector topology |
| 06/21/1995 | CN1104006A Temperature coefficient controlled radio frequency signal detecting circuitry |
| 06/01/1995 | DE4340012A1 Digital stereo signal demodulator with cordic demodulator |
| 05/31/1995 | EP0573409B1 Interpolative analog/digital converter for band-pass signals |
| 05/23/1995 | US5418815 Receiver adaptively operable for multiple signal transmission systems |
| 05/18/1995 | WO1995013655A1 Method and apparatus for detecting an input signal level |
| 04/27/1995 | DE4340722C1 Device for suppressing a residual carrier produced during modulation at the transmitting end |
| 04/25/1995 | US5410368 Carrier acquisition by applying substitute pilot to a synchronous demodulator during a start up interval |
| 04/19/1995 | EP0648391A1 Synchronous tracking am receiver. |
| 04/05/1995 | EP0647031A1 Circuit for correcting phase-shift and amplitudes |
| 04/04/1995 | US5404585 Power detector that employs a feedback circuit to enable class B operation of a detector transistor |
| 03/30/1995 | DE4332658A1 Circuit arrangement for demodulating a signal |
| 03/23/1995 | DE4420376A1 Modulator Modulator |
| 03/16/1995 | DE4409474A1 Amplitude demodulator |
| 03/15/1995 | EP0643494A1 Radio receiver |
| 03/15/1995 | EP0643475A1 Amplitude demodulator |
| 02/28/1995 | US5394118 Digital circuit for the extraction of the phase and envelope signals of a single sideband signal |
| 02/22/1995 | EP0639890A1 Directional detector for power level control |
| 02/21/1995 | US5392464 In a data transmission system |
| 02/15/1995 | EP0638995A1 A DC coupled amplifier FED by an RF detector |
| 02/15/1995 | EP0638991A1 Method and apparatus for sampling of electrical signals |
| 02/02/1995 | DE4325713A1 Method and circuit arrangement for demodulation and threshold value discrimination of keyed CW signals |
| 02/01/1995 | EP0636288A1 Demodulating logarithmic amplifier |
| 01/25/1995 | CN1097915A High frequency receiving apparatus |
| 01/03/1995 | US5379456 Multiplying saw phase shift envelope detector |
| 12/27/1994 | US5376974 Phase-locked looped synchronous video detector circuit |
| 12/27/1994 | US5376891 Phase-sensitive rectifier arrangement with integration effect |
| 12/22/1994 | WO1994029949A1 Terrestrial and satellite television reception tuner |
| 12/14/1994 | EP0629040A1 Method and apparatus for IF demodulation of a high frequency input signal |
| 12/06/1994 | US5371902 Method and apparatus for recovering baseband signals from in-phase and quadrature-phase signal components having phase error therebetween |
| 11/29/1994 | US5369670 Method and apparatus for demodulation of a signal transmitted over a fading channel using phase estimation |
| 11/17/1994 | EP0624802A2 Alternating voltage signals rectifying circuit |
| 11/09/1994 | EP0624009A1 Automatic offset control circuit for digital receiver |
| 11/09/1994 | EP0614582A4 Digital demodulator for preamble-less burst communications. |
| 11/01/1994 | US5361407 Double superheterodyne receiver with independent frequency calibration of two local oscillators |
| 11/01/1994 | US5361036 Complex digital demodulator employing Chebychev-approximation derived synthetic sinusoid generation |
| 10/18/1994 | US5357574 Coherent signal generation in digital radio receiver |
| 10/11/1994 | US5355533 Method and circuit for radio frequency signal detection and interference suppression |
| 09/28/1994 | EP0617519A2 Circuit for deriving at least one quality indication of a received signal |
| 09/14/1994 | EP0614582A1 Digital demodulator for preamble-less burst communications |
| 09/14/1994 | CN1092222A Demodulator circuit and demodulating method |
| 09/06/1994 | US5345185 Logarithmic amplifier gain stage |
| 09/01/1994 | DE4404888A1 Synchronization detector circuit |
| 08/23/1994 | US5341431 AM stereo detection and audio processing apparatus |
| 08/16/1994 | US5339040 AM demodulation receiver using digital signal processor |
| 08/10/1994 | EP0609717A2 Carrier detector |
| 07/12/1994 | US5329250 Double phase locked loop circuit |
| 06/23/1994 | WO1994014246A1 Generation of a coherent signal using an adaptive filter for cancelling and synchronous detection in a digital radio receiver |
| 06/23/1994 | CA2151715A1 Coherent signal generation in digital radio receiver |
| 06/07/1994 | US5319804 Transmitter with nonlinearity correction circuits |
| 06/01/1994 | EP0599686A1 Digital circuit for extracting phase and envelope signals from a single side band signal |
| 06/01/1994 | EP0599665A2 Detecting circuit and detection method |
| 05/24/1994 | US5315620 Arrangement for correction of synchronous demodulator quadrature phase errors |
| 05/21/1994 | CA2103315A1 Digital circuit for the extraction of the phase and envelope signals of a single sideband signal |
| 05/11/1994 | WO1994010757A1 Homodyne receiver and process for direct conversion |
| 05/11/1994 | WO1994010756A1 Homodyne receiver and process for correcting the converted receiving signal |
| 05/11/1994 | EP0595976A1 Am receiver |
| 05/04/1994 | EP0595278A1 Homodyne receiver and method for correcting the converted signals |
| 05/04/1994 | EP0595277A1 Homodyne receiver and method of direct conversion |
| 04/26/1994 | US5306968 Rectifier circuit not using clock signal |
| 04/19/1994 | US5305086 Two step demodulation synchronous detector |
| 03/29/1994 | US5299232 Phase compensation method and apparatus |
| 03/29/1994 | US5298811 Synchronous logarithmic amplifier |