Patents
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Patents for H03C 3 - Angle modulation (3,926)
07/2010
07/08/2010US20100171562 Apparatus and method for modulation and demodulation using frequency selective baseband
07/07/2010EP1516439B1 Fm modulator using a phaselockloop
07/06/2010US7750751 Method and apparatus for creating phase modulation in edge-sensitive signals
07/06/2010US7750750 Enhanced polar modulator for transmitter
07/01/2010US20100167782 Transaction control system including portable data terminal and mobile customer service station
06/2010
06/29/2010US7746957 Distortion correction control apparatus and distortion correction control method
06/29/2010US7746187 Self-calibrating modulator apparatuses and methods
06/29/2010US7746185 Apparatus and method for acquisition and tracking bank cooperation in a digitally controlled oscillator
06/23/2010CN1922842B Quadrature modulation apparatus and method
06/23/2010CN1679239B Equipment comprising phase-lock loops and method for calibrating phase-lock loop
06/22/2010US7742543 Transmission circuit by polar modulation system and communication apparatus using the same
06/22/2010US7742541 Transmission circuit, and communication apparatus using the same
06/22/2010US7741928 Frequency modulation using a digital frequency locked loop
06/17/2010WO2010038166A3 Direct modulation and demodulation with acoustic wave devices
06/16/2010CN1698263B Method and apparatus of compensating imbalance of a modulator
06/15/2010US7738952 Treatment of conditions through modulation of the autonomic nervous system
06/15/2010US7737800 Frequency modulation circuit
06/10/2010US20100142518 Hierarchical Data Collection Network Supporting Packetized Voice Communications Among Wireless Terminals and Telephones
06/10/2010US20100142503 Hierarchical Data Collection Network Supporting Packetized Voice Communications Among Wireless Terminals And Telephones
06/09/2010EP1712049B1 Fractional-n sigma-delta modulator comprising an adaptive compensation filter that compensates for the undesired effects of the phase locked loop and methods thereof
06/08/2010US7733976 Computational circuits and methods for processing modulated signals having non-constant envelopes
06/02/2010DE10205680B4 Ein-Punkt-Modulator mit PLL-Schaltung One-point modulator PLL circuit
06/01/2010US7729440 Frequency modulator for digital transmissions
06/01/2010US7728690 Method and apparatus for compensating for tuning nonlinearity of an oscillator
05/2010
05/27/2010WO2010057871A2 Method for continuous phase multi-state modulation and transmitter for implementing said method
05/27/2010WO2009052457A3 Method and apparatus for compensating for tuning nonlinearity of an oscillator
05/26/2010CN1839546B Digital RF circuit and its signal processing method
05/26/2010CN101714961A Digital signal transmitting method and equipment based on modulated carriers of equal amplitude and equal period
05/25/2010US7725087 Feedback compensation detector for a direct conversion transmitter
05/25/2010US7724837 Efficient modulation of RF signals
05/18/2010US7719373 Device and method for generating a signal with predefined transcient at start-up
05/13/2010US20100118864 Hierarchical Data Collection Network Supporting Packetized Voice Communications Among Wireless Terminals And Telephones
05/11/2010US7715809 EDGE modulator
05/11/2010US7715375 Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
05/06/2010US20100111150 Wireless Local Area Network (WLAN) Using Universal Frequency Translation Technology Including Multi-Phase Embodiments
05/06/2010US20100109788 Driver circuit
05/05/2010EP1374386B1 Gilbert cell multiplier in a quadrature modulator
05/04/2010US7711336 Single sideband mixer and method of extracting single sideband signal
05/04/2010CA2353143C Radio communication apparatus
04/2010
04/27/2010US7706495 Two-point frequency modulation apparatus
04/22/2010DE102009043079A1 Hocheffizienzmodulation High efficiency modulation
04/21/2010EP2176948A1 Method and arrangement for production of a frequency-modulated signal
04/20/2010US7702359 Direct-conversion transmitter circuit and transceiver system
04/20/2010US7702033 Modulating apparatus, mobile communication system, modulating method, and communication method
04/15/2010US20100091907 method for transmitting information using sequence
04/15/2010US20100090775 Method and Apparatus for Dynamic Modulation
04/14/2010CN101694986A Vector modulation error compensation method based on analog base band correction
04/13/2010US7697467 Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
04/13/2010US7696829 Frequency synthesizer and method
04/08/2010US20100086081 Modulation device and demodulation device
04/08/2010DE102009029425A1 Sprunglose Phasenmodulation in einer Polarmodulationsumgebung Jump lots phase modulation in a polar modulation environment
04/08/2010DE102008042519A1 Verfahren zur Regelung einer Grundfrequenz eines spannungsgesteuerten Oszillators als eine Trägerfrequenz eines frequenzmodulierten Signals Method for controlling a fundamental frequency of a voltage controlled oscillator as a carrier frequency of a frequency-modulated signal
04/07/2010EP2173029A1 Method of self-calibrating a frequency synthesiser with FSK modulation at two points
04/07/2010EP2173028A2 Method for regulating a basic frequency of a voltage-controlled oscillator as a carrier frequency of a frequency-modulated signal
04/06/2010US7692500 Apparatus and methods for mixed analog-digital frequency synthesizing and modulation
04/01/2010WO2010035349A1 Microwave/millimeter wave communication apparatus
04/01/2010US20100080182 Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
04/01/2010US20100079131 Audio frequency device for audible eyes off measurements
03/2010
03/30/2010US7689181 Circuit arrangement for regulating a DC signal component and mobile radio transmitter
03/30/2010US7688929 All-digital phase modulator/demodulator using multi-phase clocks and digital PLL
03/30/2010US7688811 Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
03/30/2010US7688157 Selective envelope modulation enabling reduced current consumption
03/30/2010US7688156 Polar modulation transmission circuit and communication device
03/24/2010CN101682296A Spread spectrum control pll circuit and its start-up method
03/24/2010CN101682295A Apparatus for coupling a wireless communication device to a physical device
03/18/2010US20100066459 Two-point phase modulator and method of calibrating conversion gain of the same
03/16/2010US7680213 Generating higher order modulation using QPSK modulations
03/16/2010US7679468 KFM frequency tracking system using a digital correlator
03/10/2010EP1532729B1 Phase locked loop method and apparatus
03/09/2010US7675995 Apparatus and method for conditioning a modulated signal in a communications device
03/09/2010US7675379 Linear wideband phase modulation system
03/09/2010US7675368 Hybrid stochastic gradient based digitally controlled oscillator gain KDCO estimation
03/02/2010US7672398 Method and system for adjusting the amplitude and phase characteristics of real and imaginary signal components of complex signals processed by an analog radio transmitter
03/02/2010US7672257 Transaction control system including portable data terminal and mobile customer service station
03/02/2010US7671692 Apparatus and method for compensating carrier feedthrough in quadrature modulation system
03/02/2010US7671691 Quadrature modulator with phase controller apparatus and error detector
02/2010
02/25/2010US20100046674 System and Method for Frequency Translation With Harmonic Suppression Using Mixer Stages
02/23/2010US7668258 Systems and methods for transmitter diversity expansion
02/23/2010US7667553 Frequency modulator using PLL
02/23/2010US7667551 Frequency shift keying modulator having sigma-delta modulated phase rotator
02/17/2010EP1620940B1 Quadrature modulator and calibration method
02/17/2010CN100590979C Double spots modulating type frequency modulation device, wireless transmit device and wireless communication device
02/10/2010EP2151047A1 Linear rf amplifier with polar feedback
02/04/2010WO2009152106A3 Dithering a digitally-controlled oscillator output in a phase-locked loop
02/04/2010US20100026407 Modulator
02/03/2010CN100588110C Direct conversion device with compensation means for transmitting path to wireless communication equipment
02/02/2010US7657238 Method and apparatus for modulating a radio signal using digital amplitude and phase control signals
01/2010
01/28/2010DE102008034483A1 Phase detector for detecting phase angle between phase-modulated and reference signals, has bistable trigger circuit controlled with phase-modulated and reference signals whose frequencies amount to preset portion of source signal
01/27/2010EP2148486A1 Method and system for processing imperfections of a radiofrequency transmission chain and communication device incorporating such a transmission channel.
01/26/2010US7653145 Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
01/20/2010CN100583861C Two-point modulation type phase modulating apparatus, polar modulation transmitting apparatus, radio transmitting apparatus, and wireless communication apparatus
01/19/2010US7649428 Method and system for generating noise in a frequency synthesizer
01/13/2010EP2144364A1 Feedback system
01/12/2010US7646743 Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
01/12/2010US7646258 Digital FM transmitter with variable frequency complex digital IF
01/12/2010US7646256 Controlled oscillation module
01/07/2010WO2009056361A3 Pll calibration
01/07/2010DE102004005261B4 Amplitudengeregelte Oszillatorschaltung und Verfahren zum Betreiben einer amplitudengeregelten Oszillatorschaltung Amplitude-regulated oscillator circuit and method for operating an amplitude-regulated oscillator circuit
01/06/2010CN100578915C Two point phase modulator and method for controlling pressure-control oscillator gain in modulator
12/2009
12/31/2009US20090323680 Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones
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