Patents
Patents for H03C 1 - Amplitude modulation (2,214)
01/2006
01/12/2006US20060009169 Trasmission device and adjustment method thereof
01/12/2006US20060006955 Contactless IC card system
01/12/2006DE10337084B4 Vorrichtung zur Erzeugung normkonformer Signale Apparatus for generating standard-compliant signals
01/10/2006US6985703 Direct synthesis transmitter
01/05/2006WO2006000885A1 Low current direct conversion transmitter architecture
01/05/2006US20060003712 High-quality power ramping in a communications transmitter
01/05/2006US20060003711 Power amplifier protection circuit and associated methods
01/05/2006DE102004029932A1 Verfahren und Vorrichtung zur gleichzeitigen Kompensation von Signalfehlern in IQ-Modulatoren Method and apparatus for simultaneous compensation of signal errors in IQ modulators
01/03/2006US6983024 Quadra-polar modulator
01/03/2006US6982945 Baseband direct sequence spread spectrum transceiver
01/03/2006US6982627 Low power regulated amplifier for a transponder
12/2005
12/29/2005US20050287965 Low current direct conversion transmitter architecture
12/22/2005WO2005101776A3 Single and multiple sinewave modulation and demodulation techniques
12/15/2005US20050277389 Circuit arrangement for a wideband mixer with predistortion and high linearity
12/14/2005CN1708038A Equipment for deriving analog signal
12/08/2005US20050272395 Method and circuit for down-converting a signal
11/2005
11/30/2005CN1229950C Vestigial sideband digital modulator
11/23/2005CN1701505A Modulator and correction method thereof
11/17/2005WO2005109628A1 A tuneable circuit for canceling third order modulation
11/17/2005US20050255814 Apparatus and method for compensating for an offset of a power amplifier in a mobile communication system
11/17/2005DE102004020816A1 Verfahren und Schaltung zur Lastmodulation in einer Verbindung aus einem Sendeschwingkreis und einem Empfangsschwingkreis Method and circuit for load modulation in a connection from a transmitting resonant circuit and a receiving resonant circuit
11/17/2005DE102004019366A1 Schaltungsanordnung für einen breitbandigen Mischer mit Vorverzerrung und hoher Linearität Circuit arrangement for a broadband mixer with predistortion and high linearity
11/17/2005CA2677967A1 Digital broadcast transmitting and receiving system having an improved receiving performance and signal processing method thereof
11/17/2005CA2677963A1 Digital broadcast transmitting and receiving system having an improved receiving performance and signal processing method thereof
11/17/2005CA2566491A1 A tuneable circuit for canceling third order modulation
11/10/2005WO2005107060A2 Method and system for compensating for phase variations caused by transmitter activation
11/10/2005WO2005035436A3 Mems device annealing by laser
11/10/2005US20050249301 Digital broadcast transmitting and receiving system having an improved receiving performance and signal processing method thereof
11/09/2005CN1695295A Device including a circuit with adjusting means for adjusting at least one characteristic signal value of a modulated signal
11/03/2005US20050245208 Polar modulation transmission apparatus and radio communication apparatus
11/03/2005US20050241467 Modular electronic musical keyboard instrument
11/02/2005CN1691505A Plasma controller
10/2005
10/27/2005WO2005101776A2 Single and multiple sinewave modulation and demodulation techniques
10/27/2005WO2005101678A2 Method and apparatus for dynamically adjusting a transmitter's impedance and implementing a hybrid power amplifier therein which selectively connects linear and switch-mode power amplifiers in series
10/27/2005US20050239420 Rf amplifier system with interface to provide a computer readable spectral depiction of the rf output
10/27/2005US20050239410 Method and apparatus to reduce multipath effects on radio link control measurements
10/27/2005US20050237123 Method and circuit arrangement for load modulation in a combination comprised of a transmitting and a receiving oscillator circuit
10/27/2005CA2564081A1 Single and multiple sinewave modulation and demodulation techniques
10/27/2005CA2562111A1 Method and apparatus for dynamically adjusting a transmitter's impedance and implementing a hybrid power amplifier therein which selectively connects linear and switch-mode power amplifiers in series
10/26/2005EP1589656A1 Circuit for and method of load modulation in a system comprising a transmit resonant circuit and a receive resonant circuit
10/20/2005WO2005099111A1 A system and method for calibrating modules of a wide-range transceiver
10/20/2005US20050233713 Method and system for compensating for phase variations caused by transmitter activation
10/20/2005US20050231433 Antenna for tire pressure monitoring wheel electronic device
10/13/2005US20050227655 Rectifiers and rectifying methods for use in telecommunications devices
10/13/2005US20050227640 Method and apparatus for dynamically adjusting a transmitter's impedance and implementing a hybrid power amplifier therein which selectively connects linear and switch-mode power amplifiers in series
10/12/2005CN1223088C Method for controlling generator output
10/06/2005US20050221765 System and method for calibrating modules of a wide-range transceiver
10/06/2005US20050218992 Optimizing power consumption in amplifiers
10/06/2005US20050218991 Bias circuit for a bipolar transistor
10/05/2005EP1583224A1 Modulator and correction method thereof
09/2005
09/29/2005WO2005091492A1 Method and system of reducing collisions in an asynchronous communication system
09/29/2005US20050215220 Amplifiers and amplifying methods for use in telecommunications devices
09/29/2005US20050215207 Method and system for frequency up-conversion with a variety of transmitter configurations
09/22/2005WO2005013410A9 Enhanced holographic communications apparatus and method
09/22/2005US20050207383 Method and system of reducing collisions in an asynchronous communication system
09/15/2005US20050202797 Methods and systems for down-converting electromagnetic signals, and applications thereof
09/13/2005US6944238 Digital transmitter system and method
09/08/2005US20050197076 Radio communication device and control method of amplification circuit thereof
09/07/2005EP1570570A1 Binary transmitting station with direct modulation of the oscillator
09/06/2005US6940936 Alternate timing signal for a vestigial sideband modulator
09/06/2005US6940920 Multiplier arrangement, signal modulator and transmitter
09/01/2005WO2005081399A1 Power amplifier with stabilising network
09/01/2005US20050191975 Method and apparatus for a high performance and high dynamic range baseband power control system
08/2005
08/23/2005US6933898 Antenna for tire pressure monitoring wheel electronic device
08/11/2005WO2005074124A1 Adjusting circuit
08/11/2005US20050172718 Method and apparatus for tracking a resonant frequency
08/09/2005US6928091 Opto-electronic oscillator including a tunable electro-optic filter
08/09/2005US6927627 Amplifier power control in frequency hopping applications and methods
08/04/2005US20050170794 Adjusting circuit
08/03/2005EP1559190A1 Chireix architecture using low impedance amplifiers
08/03/2005CN1650512A Power oscillator for control of waveshape and amplitude
07/2005
07/27/2005CN1647374A Improved method and apparatus for tracking a resonant frequency
07/13/2005EP1553776A1 Multichannel quadrature modulation
07/13/2005CN1640084A Resonant power converter for radio frequency transmission and method
07/12/2005CA2298992C Temperature compensated high performance oscillator
07/07/2005WO2005060596A2 A transmitter for modulation distortion compensation
07/07/2005US20050146446 Keyboards
06/2005
06/30/2005WO2005034337A3 Amplifier power control in frequency hopping applications and methods
06/30/2005US20050143788 Treatment of female fertility conditions through modulation of the autonomic nervous system
06/29/2005CN1208962C Wave-carried signal generator for complex modulator
06/23/2005WO2005020482A3 Thermal-mechanical signal processing
06/23/2005US20050136861 Method and system for frequency up-conversion with modulation embodiments
06/23/2005US20050136860 Reducing local oscillation leakage in a radio frequency transmitter
06/23/2005US20050136858 Bipolar modulator
06/16/2005US20050130619 Radio-frequency mixer arrangement
06/16/2005US20050130609 Transmitter circuit and method for modulation distortion compensation
06/07/2005US6903619 Electromagnetic wave transmitter systems, methods and articles of manufacture
05/2005
05/25/2005DE10351606B3 High frequency mixer arrangement, e.g. for use in vector modulation, has capacitance(s) in feedback path between differential amplifier output, input of operational amplifier, which is configured as anti-aliasing filter
05/18/2005EP1488587A4 Resonant power converter for radio frequency transmission and method
05/18/2005EP1451648A4 Envelope modulator for haptic feedback devices
05/12/2005US20050100077 Multipath-adapted holographic communications apparatus and methods
05/11/2005CN1614877A RF mixing device
05/10/2005US6892061 Mixer circuit configuration
05/06/2005WO2005020434A3 Shell type actuator
05/03/2005US6889087 Switched reactance modulated E-class oscillator design
04/2005
04/28/2005US20050090203 Device for the production of standard-compliant signals
04/21/2005WO2005035436A2 Mems device annealing by laser
04/14/2005WO2005034337A2 Amplifier power control in frequency hopping applications and methods
04/07/2005US20050074073 Direct digital amplitude modulator
04/05/2005US6876265 System and method for using a saw based RF transmitter for AM modulated transmission in a TPM
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