| Patents for H03C 3 - Angle modulation (3,926) |
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| 09/25/2001 | US6294936 Spread-spectrum modulation methods and circuit for clock generator phase-locked loop |
| 09/20/2001 | US20010022540 Frequency shift key modulating oscillator |
| 09/19/2001 | EP1134904A2 Transmitter circuit with frequency self-optimization |
| 09/19/2001 | CN1313695A Transmitter and method for producing transmitting signals |
| 09/16/2001 | CA2334157A1 Transmitter circuit with frequency self-optimization |
| 09/13/2001 | WO2001067596A1 Rf communication system using an rf digital amplifier |
| 09/13/2001 | US20010021230 Current-controlled carrier tracking filter for improved spurious signal suppression |
| 09/13/2001 | US20010021228 Signal transmission system and signal transmission apparatus |
| 09/13/2001 | DE10012003A1 Sender und Verfahren zum Erzeugen eines Sendesignals Transmitter and method for generating a transmit signal |
| 09/13/2001 | DE10011061A1 Sender und Verfahren zum Erzeugen eines Sendesignals Transmitter and method for generating a transmit signal |
| 09/12/2001 | EP1133213A2 An audio A/D converter using frequency modulation |
| 09/12/2001 | EP1133127A2 Transmitter, and method, for the generation of transmission signals |
| 09/12/2001 | EP1133126A2 Removal of distortion in quadrature modulation |
| 09/12/2001 | EP1133066A1 Transmitter/receiver |
| 09/12/2001 | EP1131929A1 Method and apparatus for the determination of the predistortion parameters in a quadrature modulator, by measuring the output power |
| 09/11/2001 | US6288619 Bias circuit for use in quadrature modulator |
| 09/06/2001 | US20010019582 Frequency modulation method and modem unit employing such method |
| 08/30/2001 | WO2001063742A1 Swept frequency phase locked loop |
| 08/29/2001 | EP1128626A1 Transmitter device having a modulation closed loop |
| 08/28/2001 | US6282246 Frequency modulation method and modem unit employing such method |
| 08/23/2001 | US20010016016 Power amplification using a direct-upconverting quadrature mixer topology |
| 08/21/2001 | US6278391 Method and apparatus for D.C. offset correction in digital-to-analog converters |
| 08/08/2001 | CN1307749A Method and apparatus for d.c. offset carrection in digital-to-analog converters |
| 08/01/2001 | EP1120944A2 Modulation system with on-line IQ calibration |
| 08/01/2001 | CN1306691A Quadrature modulator with carrier leakage compensation |
| 07/31/2001 | US6268780 Frequency synthesizer with digital frequency lock loop |
| 07/25/2001 | EP1118157A1 Fractional- n frequency synthesiser |
| 07/19/2001 | WO2001052427A1 Transmitter and radio communication terminal using the same |
| 07/17/2001 | US6263027 Modulator and process for minimizing power consumption and communication system employing same |
| 07/12/2001 | WO2001050591A1 Dielectric resonator oscillator and voice control device |
| 07/12/2001 | DE19958206A1 Sendevorrichtung Transmitting device |
| 07/11/2001 | CN1068489C Apparatus for digital modulation using concurrent pulse addition and substration |
| 07/04/2001 | EP1112810A1 Machine tool and method of communication |
| 07/03/2001 | US6255912 Phase lock loop used as up converter and for reducing phase noise of an output signal |
| 06/27/2001 | EP1110303A1 System and method for frequency up-conversion |
| 06/26/2001 | US6252464 Numerically-controlled nyquist-boundary hopping frequency synthesizer |
| 06/12/2001 | US6246297 Phase and/or frequency modulated frequency synthesizer having two phase locked loops |
| 06/07/2001 | WO2001041296A1 Transmitting device |
| 06/06/2001 | CN1066869C Self-adaptive modulator |
| 06/05/2001 | CA2182382C Multi-channel digital transceiver and method |
| 05/31/2001 | US20010002202 Fmod transceivers including continuous and burst operated tdma, fdma, spread spectrum cdma, wcdma, and csma |
| 05/31/2001 | DE19956073A1 Modulationsanordnung Modulation system |
| 05/30/2001 | EP1103097A1 Fm modulator using both a pll and a quadrature phase modulator |
| 05/29/2001 | US6240142 Quadrature modulator and demodulator |
| 05/23/2001 | EP1102447A1 Method for estimating the carrier frequency of a phase-modulated digital signal |
| 05/23/2001 | EP1102392A2 Quadrature Modulator |
| 05/23/2001 | EP1101079A1 Dual output capacitance interface circuit |
| 05/22/2001 | US6236689 Device comprising a phase-locked loop, electronic apparatus comprising such a device and method of modulating the frequency of an oscillator |
| 05/17/2001 | WO2001035592A1 Method and test device for determining and correcting an offset in direct voltage on a modulator |
| 05/15/2001 | US6233293 Current-controlled carrier tracking filter for improved spurious signal suppression |
| 05/10/2001 | DE19934608C1 Modulation method for frequency modulation of HF carrier signal has frequency modulated signal mixed with frequency-stabilised signal |
| 05/09/2001 | EP1097508A1 Method and apparatus for compensating for distortion in iq modulators |
| 05/09/2001 | CN1294777A Demodulator circuits |
| 05/09/2001 | CN1294775A Direct digital synthesis of precise, stable angle modulated RF signal |
| 05/09/2001 | CN1294453A Method and device for calibrating FM PLL |
| 05/08/2001 | US6229400 Method and apparatus for a calibrated frequency modulation phase locked loop |
| 05/01/2001 | US6225873 Frequency shift key modulating oscillator |
| 05/01/2001 | CA2182710C Method and apparatus for automatic modulation calibration in a radio transmitter |
| 04/25/2001 | EP1093571A1 Method of fabricating silicon capacitive sensor |
| 04/24/2001 | US6223061 Apparatus for low power radio communications |
| 04/18/2001 | CN1064794C Multiple access up converter/modulator and method |
| 04/17/2001 | CA2217429C Techniques for simultaneous communications of analog frequency-modulated and digital modulated signals using postcanceling scheme |
| 04/11/2001 | EP1091483A2 Quadrature signal generation system |
| 04/11/2001 | EP1090461A1 Method and apparatus for d.c. offset correction in digital-to-analog converters |
| 04/11/2001 | EP0734614B1 Narrow band, arbitrary hf modulation and noise generator |
| 04/10/2001 | US6215816 Physical layer interface device |
| 04/05/2001 | WO2001024390A1 Transmitter/receiver |
| 04/05/2001 | WO2001024355A1 Improvements relating to linc transmitters |
| 04/03/2001 | US6211748 FM modulator |
| 04/03/2001 | US6211747 Wideband modulated fractional-N frequency synthesizer |
| 03/29/2001 | WO2001022674A1 Radio transmitter architecture comprising a pll and a delta-sigma modulator |
| 03/29/2001 | DE19934215C1 Quadrature mixer for HF transmission applications uses analogue demodulator providing feedback signal used for evaluation and correction of offset error for each quadrature component |
| 03/27/2001 | US6208845 Frequency modulation method and frequency modulated signal transmitter |
| 03/27/2001 | US6208216 Phase-locked-loop pulse-width modulation system |
| 03/27/2001 | CA2066392C Oscillator circuit |
| 03/22/2001 | WO2001020774A1 Wireless transmitter having a modified translation loop architecture |
| 03/21/2001 | CN1288607A Quadrature modulator and demodulator |
| 03/15/2001 | WO2001018968A1 Method and arrangement for locking a control voltage to a voltage-controlled oscillator |
| 03/15/2001 | CA2383765A1 Method and arrangement for locking a control voltage to a voltage-controlled oscillator |
| 03/14/2001 | EP0796521B1 Device for the noise-free modulation and demodulation of analogue signals used for transmitting information along the shielding of power transmission cables |
| 03/07/2001 | EP1080529A1 Quadrature modulator with carrier leakage compensation |
| 03/07/2001 | CN1286834A Modulation system and mehtods including oversampling of narrow bandwidth signals and DC offset compensation |
| 03/07/2001 | CN1286532A Phase-locked loop frequency synthesizer |
| 03/07/2001 | CN1062994C 调频电路 FM circuit |
| 03/06/2001 | US6198360 Quadrature current frequency modulation oscillator |
| 02/28/2001 | EP1079514A1 Frequency synthesizer comprising a phase loop |
| 02/28/2001 | CN1285974A Method and device in a telecommunication system |
| 02/27/2001 | CA2201352C Multi-channel transceiver having an adaptive antenna array and method |
| 02/21/2001 | EP1077529A1 Phase modulation having individual placed edges |
| 02/15/2001 | WO2001011783A1 Fractional- n frequency synthesiser |
| 02/15/2001 | WO2001011767A1 Modem for wireless local area network |
| 02/15/2001 | WO2001011766A1 Apparatus and method for phase and frequency digital modulation |
| 02/14/2001 | CN1284217A Sigma Delta modulator-controlled phase-locked-loop circuit and associated method |
| 02/13/2001 | US6188275 Demodulator tuned by use of a test signal |
| 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 |
| 02/06/2001 | CA2202458C Direct qam modulator |
| 01/31/2001 | EP1073194A2 Spread spectrum clock generator and associated method |
| 01/31/2001 | EP1072087A1 Voltage controlled oscillator |
| 01/31/2001 | CN1282189A Radio transmitter |
| 01/30/2001 | US6181212 Phase locked loop for generating two disparate, variable frequency signals |