Patents
Patents for H03D 1 - Demodulation of amplitude-modulated oscillations (4,890)
04/2005
04/21/2005DE102004019882B4 Empfänger zum Empfangen eines Amplitudentastungssignals Receiver for receiving a Amplitudentastungssignals
04/20/2005EP1076925B1 Rectifier circuit
04/20/2005CN1198429C Quadrature demodulator, quadrature demodulating method
04/14/2005WO2005034502A2 Approximator apparatus, and associated method for approximating an n-dimensional euclidean norm
04/14/2005WO2005034367A2 Ultra-wideband correlating receiver
04/14/2005WO2005018087A3 Procedure for estimating a frequency shift parameter of an oscillator
04/14/2005US20050078773 Method and apparatus for accurately detecting validity of a received signal
04/14/2005US20050077923 Voltage trimming circuit
04/13/2005EP1523146A2 Method for synchronization of a circuit on reception of a modulated signal
04/07/2005DE10346972A1 Eine Begrenzerschaltung verwendende Strom-Spannungs-Umwandlungsschaltung A limiter circuit used current-voltage conversion circuit
04/06/2005CN1604461A Synchronous detection method and device
03/2005
03/31/2005US20050069062 Ultra-wideband correlating receiver
03/31/2005US20050069061 Cross-correlation signal detector
03/31/2005US20050069059 Ultra-wideband correlating receiver
03/31/2005US20050069058 Approximator apparatus, and associated method, for approximating an N-dimensional euclidean norm
03/31/2005US20050069057 Soft bits normalization apparatus, method, and system
03/31/2005US20050069054 Method and apparatus for providing channel state information
03/31/2005US20050068096 Apparatus for continuous phase quadrature amplitude modulation and demodulation
03/30/2005CN1602011A Method and apparatus for providing channel state information
03/29/2005US6873664 Method and apparatus for detecting an interleaved code
03/17/2005US20050057302 Temperature compensated, high efficiency, controlled input impedance diode detector
03/16/2005EP1515430A1 Mixer for the conversion of radio frequency signals into baseband signals
03/16/2005EP1514344A1 Quadratic nyquist slope filter
03/09/2005CN1591618A Current-voltage transforming circuit employing limiter circuit
03/03/2005WO2005020482A2 Thermal-mechanical signal processing
03/03/2005WO2005020434A2 Shell type actuator
03/03/2005US20050047526 Synchronous detection method and device
03/03/2005US20050046448 Current-voltage transforming circuit employing limiter circuit
03/02/2005EP1509999A1 Demodulator using digital circuitry
02/2005
02/24/2005WO2005018087A2 Procedure for estimating a frequency shift parameter of an oscillator
02/23/2005CN1585396A Method and apparatus for reducing impulse noise of multicarrier modulated signal
02/17/2005US20050035788 Clamped comparator
02/17/2005DE102004036880A1 Verringerung des Impulsrauschens bei einem MCM-Signal Reduction of the impulse noise in a MCM signal
02/10/2005US20050031023 Systems and methods for parallel signal cancellation
02/10/2005US20050030067 Universal gates for ICs and transformation of netlists for their implementation
02/09/2005CN1578115A Carrier detecting circuit and infrared communication device using same
02/09/2005CN1189001C Phase interpolation receiver for angle modulated RF signals
02/03/2005WO2005011106A2 A low-power wide dynamic range envelope detector system and method
02/02/2005CN1187889C Device for demodulating amplitude-modulated signal
01/2005
01/27/2005US20050017770 Chopper comparator circuit
01/26/2005EP1316143B1 Receiver circuit especially for mobile radiotelephony
01/25/2005CA2305134C Down/up-conversion apparatus and method
01/13/2005WO2005004338A2 Reduced complexity sliding window based equalizer
01/13/2005CA2530518A1 Reduced complexity sliding window based equalizer
01/11/2005US6842490 Viterbi decoder with adaptive traceback
01/06/2005US20050003786 Carrier detecting circuit and infrared communication device using same
01/06/2005US20050002423 Technique for determining performance characteristics of electronic systems
01/05/2005CN1183727C Radio receiver and method for preloading an average dc-offset into a channel filter
12/2004
12/29/2004WO2004095082A3 Method and apparatus for reducing interference in an optical data stream using data­independent equalization
12/29/2004WO2004077667A3 Coherent am demodulator using a weighted lsb/usb sum for interference mitigation
12/09/2004WO2004107561A1 Voltage to current converter
12/07/2004US6828853 Wide dynamic range demodulator for smart cards or contactless tickets
12/02/2004US20040243655 Direct RF sampling for cable applications and other broadband signals
12/01/2004CN2660786Y Diode RF detection circuit
12/01/2004CN1178402C Demodulating method capable of maintaining specular purity
11/2004
11/30/2004US6826241 Apparatus and method for filtering maximum-length-code signals in a spread spectrum communication system
11/30/2004US6825715 Temperature compensated, high efficiency diode detector
11/25/2004US20040234011 Apparatus and method for substantially eliminating a near-channel interfering amplitude modulated signal
11/25/2004US20040232950 Voltage to current converter
11/25/2004DE102004019882A1 Empfänger zum Empfangen eines Amplitudentastungssignals Receiver for receiving a Amplitudentastungssignals
11/24/2004EP1479159A2 Digital phase locked loop
11/24/2004EP1219022B1 Apparatus and method for substantially eliminating a near-channel interfering amplitude modulated signal
11/23/2004US6823181 Universal platform for software defined radio
11/23/2004US6823026 Apparatus and method for baseband detection
11/23/2004US6823025 Amplitude modulation detector
11/18/2004WO2004100537A1 Carrier recovery based demodulation
11/18/2004WO2004100369A2 Temperature compensated, high efficiency diode detector
11/17/2004EP0951751B1 Synchronous demodulator
11/16/2004US6819181 Method and structure for integrated circuit interference isolation enhancement
11/04/2004WO2004095082A2 Method and apparatus for reducing interference in an optical data stream using data­independent equalization
11/04/2004US20040217807 Temperature compensated, high efficiency diode detector
11/03/2004EP1001543B1 Sequential decoder, and receiver using sequential decoder
10/2004
10/28/2004US20040214542 Receiver for receiving amplitude shift keying signal
10/28/2004US20040213358 Radio receiver for receiving both VSB and QAM digital HDTV signals
10/27/2004EP1471633A2 Radio receiver and radio signal processing method
10/21/2004US20040208323 Stereodecoder
10/21/2004US20040208266 Method and apparatus for reducing interference in an optical data stream using data-independent equalization
10/21/2004US20040207435 Signal sorting device and method
10/13/2004CN1171379C Up/down conversion apparatus and method
10/12/2004US6803815 Amplitude modulation demodulation circuit
10/07/2004US20040196097 Am detection circuit
10/06/2004EP1464111A1 Multiple analog and digital downconversion
09/2004
09/29/2004EP0910913B1 Method and apparatus for compensating for a varying d.c. offset in a sampled signal
09/28/2004US6798253 Signal sorting device and method
09/23/2004WO2004073159A3 Systems and methods for parallel signal cancellation
09/23/2004US20040184551 Apparatus and method for sampling timing compensation in multi-carrier system
09/14/2004US6792254 Method of comparing the amplitudes of two electric signals
09/10/2004WO2004077667A2 Coherent am demodulator using a weighted lsb/usb sum for interference mitigation
09/10/2004WO2004063851A3 Method and apparatus for compressing header information for short data burst messaging
09/08/2004CN1166052C Static viterbi detector for channels utilizing code having time varying constraints
09/01/2004CN1526196A Reduced soft output information packet selection
08/2004
08/31/2004US6785349 Correlation based method of determining frame boundaries of data frames that are periodically extended
08/26/2004WO2004073159A2 Systems and methods for parallel signal cancellation
08/26/2004US20040165680 Coherent AM demodulator using a weighted LSB/USB sum for interference mitigation
08/19/2004US20040160924 Systems and methods for parallel signal cancellation
08/18/2004EP1447905A1 Power detecting circuit and demodulator comprising it
08/17/2004US6778618 Methods and devices for minimizing interblock interference in discrete multi-tone devices
08/17/2004US6778615 Method and apparatus for block noncoherent decoding
08/10/2004US6775809 Technique for determining performance characteristics of electronic systems
08/05/2004WO2004036811A3 Method and apparatus for interference suppression with efficient matrix inversion in a ds-cdma system
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