| Patents for H03C 5 - Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal (621) |
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| 10/16/2003 | US20030194016 System and method for high speed digital signaling |
| 10/07/2003 | US6631254 Apparatus for producing a radio-frequency signal |
| 09/24/2003 | EP1346471A2 Envelope restoration scheme for linear high-efficiency power amplification |
| 09/24/2003 | EP1346466A2 Modulator using class-e stage |
| 09/03/2003 | CN1440589A RF power amplifier having high power added efficiency |
| 08/27/2003 | EP1338095A1 System and method for high speed digital signaling |
| 08/27/2003 | EP1131885B1 Circuit and method for linearizing amplitude modulation in a power amplifier |
| 08/21/2003 | US20030157905 Transmitter and associated method for reducing the adjacent channel power during wireless communications |
| 08/20/2003 | EP1119902B1 Method and apparatus for generating a linearly modulated signal using polar modulation |
| 08/14/2003 | WO2002047249A3 A polar loop amplifier arrangement |
| 06/12/2003 | US20030108092 System and method for high speed digital signaling |
| 05/15/2003 | US20030092405 Envelope limiting for polar modulators |
| 05/01/2003 | WO2002075918A3 Modulator using class-e stage |
| 04/29/2003 | CA2080786C Vector fm modulator |
| 04/17/2003 | US20030073419 Power control in polar loop transmitters |
| 04/03/2003 | WO2002031963A3 Modulator using a phase-locked loop |
| 02/27/2003 | WO2003017516A1 System and method for high speed digital signaling |
| 02/27/2003 | WO2002054587A3 Envelope restoration scheme for linear high-efficiency power amplification |
| 02/18/2003 | US6522194 Envelope restoration scheme for linear high-efficiency power amplification |
| 02/13/2003 | US20030032397 Method and transmission circuit for generating a transmission signal |
| 02/12/2003 | EP1282939A2 Rf power amplifier having high power-added efficiency |
| 01/22/2003 | EP1277273A1 Method and transmitting circuit for generating a transmission signal |
| 01/08/2003 | EP1273106A2 Method and transmission circuit for producing a transmission signal |
| 12/19/2002 | WO2002101916A2 Method for amplitude modulation of a radio frequency signal, and device therefor |
| 11/27/2002 | EP1260017A2 Method and transmission circuit for producing a transmission signal |
| 11/27/2002 | EP1260016A1 Method and transmission circuit for generating a transmission signal |
| 10/03/2002 | WO2001084704A3 Rf power amplifier having high power-added efficiency |
| 09/26/2002 | WO2002075918A2 Modulator using class-e stage |
| 09/25/2002 | CN1371546A Driving circuits for switch mode RF power amplifiers |
| 09/25/2002 | CN1371545A High-efficiency modulating RF amplifier |
| 09/06/2002 | WO2001010013A9 High-efficiency modulating rf amplifier |
| 08/29/2002 | WO2000024120A9 Method and system for ensuring reception of a communications signal |
| 08/15/2002 | US20020110201 Balancing amplitude and phase |
| 08/13/2002 | US6433835 Expanded information capacity for existing communication transmission systems |
| 07/18/2002 | US20020094036 High precision, low phase noise synthesizer with vector modulator |
| 07/11/2002 | WO2002054587A2 Envelope restoration scheme for linear high-efficiency power amplification |
| 07/02/2002 | US6415002 Phase and amplitude modulation of baseband signals |
| 06/27/2002 | WO2001065722A3 Method and transmission circuit for producing a transmission signal |
| 06/27/2002 | US20020080716 Polar loop transmission circuit |
| 06/13/2002 | WO2002047249A2 A polar loop amplifier arrangement |
| 06/05/2002 | EP1211801A2 Polar Loop Transmitter |
| 05/29/2002 | DE10056472A1 Polar loop transmission circuit has oscillator producing HF signal depending on phase comparison, amplitude modulator, feedback path, amplifier between amplitude modulator, mixer |
| 05/23/2002 | WO2001065682A3 Method and transmission circuit for producing a transmission signal |
| 05/08/2002 | CN1348654A Correction of amplitude and phase imbalance in PSK receivers |
| 05/02/2002 | EP1201025A1 Driving circuits for switch mode rf power amplifiers |
| 05/02/2002 | EP1201024A1 High-efficiency modulating rf amplifier |
| 04/30/2002 | US6380802 Transmitter using input modulation for envelope restoration scheme for linear high-efficiency power amplification |
| 04/23/2002 | US6377620 Balancing amplitude and phase |
| 04/18/2002 | WO2002031963A2 Modulator using a phase-locked loop |
| 04/17/2002 | EP1197051A1 Modulation switch for the generation of a similtaneously phase- and amplitude modulated signal |
| 04/17/2002 | CN1345482A Method and apparatus for reducing oscillator noise by noise-feedforward |
| 04/02/2002 | US6366620 VSAT system |
| 03/13/2002 | EP0932944B1 Data-transmission circuit with a station and a response circuit |
| 03/12/2002 | US6356597 High precision, low phase noise synthesizer with vector modulator |
| 02/26/2002 | US6351500 AM- compatible digital broadcasting method and system |
| 01/03/2002 | DE10128742A1 Vorrichtung zur Erzeugung eines phasen- und amplitudenmodulierten radioelektrischen Signals und Verfahren zur Erzeugung eines solchen Signals An apparatus for generating a phase and amplitude modulated radio-electric signal and method for generating such a signal |
| 01/02/2002 | EP1168598A2 High precision, low phase noise synthesizer with vector modulator |
| 01/02/2002 | EP1166447A1 Method and apparatus for reducing oscillator noise by noise-feedforward |
| 01/02/2002 | CN1329773A Amplitude modulation o phase modulation cancellation method in an RF amplifier |
| 12/12/2001 | CN1326612A Circuit and method for linearizing amplitude modulation in power amplifier |
| 12/12/2001 | CN1326609A Circuit and method for I/Q modulation with independent, high efficiency amplitude modulation |
| 11/14/2001 | CN1322398A Method and apparatus for generating linearly modulated signal polar modulation |
| 11/08/2001 | WO2001084704A2 Rf power amplifier having high power-added efficiency |
| 10/17/2001 | EP1145517A1 Correction of amplitude and phase imbalance in psk receivers |
| 10/04/2001 | EP1138115A1 Amplitude modulation to phase modulation cancellation method in an rf amplifier |
| 09/27/2001 | US20010024475 Am- compatible digital broadcasting method and system |
| 09/25/2001 | US6295442 Amplitude modulation to phase modulation cancellation method in an RF amplifier |
| 09/12/2001 | EP1131885A1 Circuit and method for linearizing amplitude modulation in a power amplifier |
| 09/07/2001 | WO2001065722A2 Method and transmission circuit for producing a transmission signal |
| 09/07/2001 | WO2001065685A1 Method and transmitting circuit for generating a transmission signal |
| 09/07/2001 | WO2001065684A1 Method and transmission circuit for producing a transmission signal |
| 09/07/2001 | WO2001065683A1 Method and transmission circuit for generating a transmission signal |
| 09/07/2001 | WO2001065682A2 Method and transmission circuit for producing a transmission signal |
| 08/30/2001 | US20010017896 Digital radio communication system and method |
| 08/29/2001 | EP1128586A2 Digital radio communication system and method with adaptive modulation |
| 08/29/2001 | CN1310558A Digital radio communication system and digital radio communication mode |
| 08/16/2001 | EP0764362B1 Linear microwave power amplifier with supply power injection controlled by the modulation envelope |
| 08/01/2001 | EP1119902A1 Method and apparatus for generating a linearly modulated signal using polar modulation |
| 08/01/2001 | CN1306691A Quadrature modulator with carrier leakage compensation |
| 07/03/2001 | US6255912 Phase lock loop used as up converter and for reducing phase noise of an output signal |
| 05/23/2001 | EP0749650B1 Method and apparatus for am compatible digital broadcasting |
| 05/22/2001 | US6236267 Linearization for power amplifiers using feed-forward and feedback control |
| 03/07/2001 | EP1080529A1 Quadrature modulator with carrier leakage compensation |
| 03/06/2001 | US6198347 Driving circuits for switch mode RF power amplifiers |
| 02/27/2001 | US6194963 Circuit and method for I/Q modulation with independent, high efficiency amplitude modulation |
| 02/20/2001 | US6191653 Circuit and method for linearizing amplitude modulation in a power amplifier |
| 02/08/2001 | WO2001010015A1 Driving circuits for switch mode rf power amplifiers |
| 02/08/2001 | WO2001010013A1 High-efficiency modulating rf amplifier |
| 02/08/2001 | DE10029117A1 Mobiltelefon, umfassend eine Vorrichtung zur Entsendung eines phasen- und amplitudenmodulierten Signals und zugehöriges Verfahren Mobile phone comprising a device to send a phase- and amplitude-modulated signal and associated method |
| 02/01/2001 | WO2001008370A1 Modulation switch for the generation of a similtaneously phase- and amplitude modulated signal |
| 01/31/2001 | EP1072155A1 Expanded information capacity for existing communication transmission systems |
| 01/02/2001 | US6169463 Quadrature modulator with set-and-forget carrier leakage compensation |
| 12/12/2000 | US6160856 System for providing amplitude and phase modulation of line signals using delay lines |
| 11/15/2000 | EP1052770A1 Modulator using AM and PM |
| 10/24/2000 | US6137828 Radio remote interface for modulating/demodulating data in a digital communication system |
| 10/12/2000 | WO2000060741A1 Method and apparatus for reducing oscillator noise by noise-feedforward |
| 09/28/2000 | WO2000057545A1 Quadrature modulator with carrier leakage compensation |
| 09/19/2000 | US6122326 High precision, low phase noise synthesizer with vector modulator |
| 09/13/2000 | EP1035701A1 Modulator using envelope elimination and restoration by means of look-up tables |
| 08/08/2000 | US6101224 Method and apparatus for generating a linearly modulated signal using polar modulation |