| Patents for H03D 1 - Demodulation of amplitude-modulated oscillations (4,890) |
|---|
| 03/23/1994 | EP0588444A1 Modulation system capable of accurately compensating for nonlinearities of an amplifier connected thereto |
| 03/22/1994 | US5296820 Coherent demodulator preceded by non-coherent demodulator and automatic frequency control circuit |
| 03/10/1994 | DE4229623A1 Signal demodulator for IR remote control signals - provides pulsed switch signal fed to timing stage for delayed output signal. |
| 03/01/1994 | US5291525 Symmetrically balanced phase and amplitude base band processor for a quadrature receiver |
| 02/17/1994 | WO1993021689A3 Demodulating logarithmic amplifier |
| 02/16/1994 | EP0583027A1 Circuit for determining the field strength of FM transmitters |
| 02/16/1994 | EP0375717B1 A controlled oscillator |
| 02/09/1994 | EP0582176A1 Even order term mixer |
| 02/01/1994 | US5283533 Amplifier signal level detector for a mobile communication system |
| 01/25/1994 | US5282227 Communication signal detection and acquisition |
| 01/06/1994 | WO1994000919A1 Synchronous tracking am receiver |
| 12/15/1993 | EP0574273A1 A receiver compriser a combined AM-FM demodulator |
| 12/15/1993 | EP0573409A1 Interpolative analog/digital converter for band-pass signals. |
| 11/24/1993 | EP0570508A1 Am-fm combined stereo receiver |
| 11/16/1993 | US5263196 Method and apparatus for compensation of imbalance in zero-if downconverters |
| 11/16/1993 | US5263055 Apparatus and method for reducing harmonic interference generated by a clock signal |
| 11/03/1993 | EP0568056A1 Arrangement for correction of synchronous demodulator quadrature phase errors |
| 10/28/1993 | WO1993021689A2 Demodulating logarithmic amplifier |
| 10/27/1993 | EP0566622A1 Phase-sensitive rectifier |
| 10/13/1993 | EP0564850A1 A symmetrically balanced phase and amplitude base band processor for a quadrature receiver |
| 10/07/1993 | CA2090739A1 A symmetrically balanced phase and amplitude base band processor for a quadrature receiver |
| 09/28/1993 | US5249203 Phase and gain error control system for use in an i/q direct conversion receiver |
| 09/27/1993 | WO1993019518A1 Phase compensation method and apparatus |
| 09/21/1993 | US5247254 Data recording system incorporating flaw detection circuitry |
| 09/16/1993 | WO1993018414A1 Data recording system incorporating flaw detection circuitry |
| 09/16/1993 | DE4207823A1 Synchronous receiver for LW and MW - uses phase locked reference frequency to synchronise receiver frequency synthesiser |
| 09/01/1993 | EP0557867A2 Double phase locked loop circuit |
| 08/24/1993 | US5239699 Am-fm combined stereo receiver |
| 08/05/1993 | DE4214350C1 Detector circuit for rectification of HF signals - uses operation amplifier with counter coupling branches for suppression of temp. drift and small signal distortions |
| 07/20/1993 | US5230099 System for controlling phase and gain errors in an i/q direct conversion receiver |
| 07/20/1993 | US5230011 Receiver |
| 06/23/1993 | CN1021392C Diode-triode mixture detector |
| 06/10/1993 | WO1993011605A1 Digital demodulator for preamble-less burst communications |
| 06/09/1993 | EP0545342A1 Superheterodyne receiver |
| 05/25/1993 | CA1318358C2 Digital radio frequency receiver |
| 05/19/1993 | EP0541668A1 Quadrature distortion cancellation system |
| 05/18/1993 | US5212825 Synthetic heterodyne demodulator circuit |
| 05/12/1993 | EP0540906A1 Phase-sensitive rectifying device with integrating effect |
| 04/13/1993 | US5203030 Satellite transmission capturing method for gps receiver |
| 04/06/1993 | US5200715 Waveform modulation and demodulation methods and apparatus |
| 03/31/1993 | EP0216803B1 Digital zero-if selectivity section |
| 03/30/1993 | CA1315344C Log-polar signal processing |
| 03/03/1993 | EP0529618A1 Demodulating device |
| 03/03/1993 | EP0529183A2 Car radio |
| 02/24/1993 | EP0528689A2 Detector |
| 02/04/1993 | WO1993002507A1 Am receiver |
| 02/03/1993 | EP0348416B1 Zener diode detector circuit |
| 01/20/1993 | EP0524008A1 Transmitter with nonlinearity correction circuits |
| 01/20/1993 | EP0523779A1 Direct conversion receiver |
| 01/20/1993 | EP0523778A1 Direct conversion receiver |
| 01/13/1993 | EP0522310A2 Control apparatus for an FM receiver having plural antennas |
| 01/12/1993 | US5179731 Frequency conversion circuit |
| 01/12/1993 | US5179728 Spurious product and local oscillator radiation suppression system for use in superheterodyne radio receivers |
| 01/05/1993 | US5177611 Method and apparatus for canceling quadrature distortion as for video signals having in-phase and quadrature phase components |
| 12/22/1992 | US5173705 Telecommunications device using electromagnetic waves |
| 11/11/1992 | EP0346435B1 High-speed analog multiplier - absolute value detector |
| 11/04/1992 | EP0323996B1 Oscillator network and quadrature network for radio receiver |
| 10/27/1992 | US5159710 Zero IF receiver employing, in quadrature related signal paths, amplifiers having substantially sinh-1 transfer characteristics |
| 10/20/1992 | US5157343 Electronic arrangement for receiving a modulated carrier signal |
| 09/29/1992 | US5151666 Oscillation stoppage detection circuit |
| 09/22/1992 | US5150128 In-phase and quadrature conversion error compensator |
| 09/22/1992 | CA1307831C Zero if receiver |
| 09/02/1992 | EP0501740A2 Phase and gain error control system for use in an I/Q direct conversion receiver |
| 09/02/1992 | EP0501460A1 Synchronous detector |
| 08/18/1992 | US5140703 Modulation distortion analyzer |
| 08/12/1992 | EP0498004A1 Integratable demodulator circuit |
| 08/12/1992 | EP0497801A1 A phase locked loop for producing a reference carrier for a coherent detector. |
| 08/07/1992 | WO1992014312A1 Am-fm combined stereo receiver |
| 08/07/1992 | WO1992014311A1 Am-fm combined stereo receiver |
| 07/29/1992 | EP0496621A2 System for controlling phase and gain errors in an I/Q direct conversion receiver |
| 07/23/1992 | WO1992012433A1 Phase-sensitive rectifier |
| 07/09/1992 | WO1992011542A1 Media flaw detection apparatus for a magnetic disc drive |
| 07/07/1992 | US5128626 Coherently demodulating arrangement including quasi-coherent demodulator for PSK signals |
| 07/07/1992 | CA1304786C Digital radio frequency receiver |
| 06/30/1992 | US5126683 Detection circuit for amplitude modulated signals |
| 06/17/1992 | EP0490275A2 System and method for compensation of in-phase and quadrature phase and gain imbalance |
| 06/17/1992 | DE4040788A1 Phase-responsive rectifier circuit for AM carrier signal - with sampling of original signal and phase-shifted signal to provide stepped DC output voltage |
| 06/16/1992 | US5122879 Television synchronous receiver with phase shifter for reducing interference from a lower adjacent channel |
| 06/16/1992 | US5122809 Microwave electric power receiver |
| 06/16/1992 | US5122765 Direct microwave modulation and demodulation device |
| 06/09/1992 | US5121057 Media flaw detection apparatus for a magnetic disk drive with squaring and summing of in-phase and quadrature-phase detected signals |
| 05/20/1992 | EP0486365A1 Device for telecommunications by electromagnetic waves |
| 05/20/1992 | EP0486095A1 Digital receiver |
| 05/19/1992 | US5115409 Multiple-input four-quadrant multiplier |
| 05/19/1992 | US5115201 Digital demodulator |
| 05/17/1992 | CA2055581A1 Electromagnetic wave telecommunication device |
| 05/13/1992 | CN1061122A Diode-triode mixture detector |
| 05/05/1992 | US5111202 Extended dynamic range quadrature detector with parallel channel arrangement |
| 04/28/1992 | US5109542 AM-FM combined stereo receiver |
| 04/21/1992 | CA1299249C Receiver comprising parallel signal paths |
| 04/14/1992 | US5105273 Video intermediate frequency signal processing circuit |
| 04/14/1992 | US5105195 System and method for compensation of in-phase and quadrature phase and gain imbalance |
| 04/08/1992 | EP0478821A1 Device for synchrodyne demodulation of amplitude modulated signals |
| 03/24/1992 | US5097837 Ultrasonic system |
| 03/24/1992 | CA1297951C Circuit arrangement for linearly amplifying and demodulating an am-modulated audio signal, and integrated semiconductor element for said circuit arrangement |
| 03/17/1992 | US5097222 Digital analog signal demodulator |
| 03/11/1992 | CN1015862B Oscillator frequency control arrangement for stereo decoder |
| 03/11/1992 | CN1015854B Automatic intermediate frequency tangent lock control circuit |
| 03/03/1992 | US5093930 Directly mixing synchronous am receiver |
| 03/03/1992 | CA1296776C Automatic if tangent lock control circuit |