| Patents for H03C 3 - Angle modulation (3,926) |
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| 06/16/1998 | US5767752 Frequency modulator with center frequency and modulation controlled by an input signal |
| 06/16/1998 | CA2083372C Digital frequency synthesizer having afc and modulation applied to frequency divider |
| 06/09/1998 | US5764171 Quadrature signal conversion device |
| 06/09/1998 | US5764094 Level shift circuit for analog signal and signal waveform generator including the same |
| 06/03/1998 | CN1183672A Wideband vector modulator |
| 06/02/1998 | US5760617 Voltage-to-frequency converter |
| 05/28/1998 | WO1998023068A1 Transmitter |
| 05/27/1998 | EP0844739A1 Phase-locked loop circuit, particularly for a transmitter-receiver system |
| 05/26/1998 | US5757216 Electronic device using phase synchronous circuit |
| 05/20/1998 | EP0843430A2 Technique for simultaneous transmission of analog frequency-modulated and digitally modulated signals using postcanceling method |
| 05/19/1998 | US5754597 Method and apparatus for routing a digitized RF signal to a plurality of paths |
| 05/14/1998 | WO1998020607A1 Frequency modulator |
| 05/12/1998 | US5751198 Angular modulator with a phase variation divided and integrated |
| 05/05/1998 | US5748683 Multi-channel transceiver having an adaptive antenna array and method |
| 04/21/1998 | US5742208 Signal generator for generating a jitter/wander output |
| 04/15/1998 | EP0835549A1 Methods and apparatus for modulating, demodulating and amplifying |
| 04/08/1998 | EP0834989A2 A device incorporating a tunable thin film bulk acoustic resonator for performing amplitude and phase modulation |
| 03/31/1998 | US5734302 DC frequency modulation circuit using two phase locked loops |
| 03/24/1998 | US5732333 Linear transmitter using predistortion |
| 03/24/1998 | US5731772 Method and apparatus for compensation for a DC voltage offset of a digital to analog converter |
| 03/18/1998 | EP0829953A2 Frequency multiplier and voltage controlled oscillator |
| 03/18/1998 | CN1176526A Narrow-band transmission and wide-band frequency discrimination method for FM communication |
| 03/17/1998 | US5729182 Device for continuous phase modulation by frequency synthesizer with phase-locked loop |
| 03/11/1998 | EP0828343A1 Signal generator for generating a jitter/wander output |
| 03/04/1998 | CN1175123A Method for realizing soft switch pulse width modulation |
| 02/26/1998 | WO1998008299A1 Transmitter controller |
| 02/26/1998 | WO1998008298A1 Voltage-to-frequency converter |
| 02/25/1998 | EP0744104A4 Method, device, and radio for compensating for modulator frequency drift while allowing for data transmission |
| 02/25/1998 | CN1174450A Direct up -conversion of digital communication signals into analog IF output signals by means of pre-distortion filter and frequency replica-selecting bandpass filater |
| 02/24/1998 | US5721514 Digital frequency generation in atomic frequency standards using digital phase shifting |
| 02/17/1998 | US5719527 Method and apparatus for amplifying, modulating and demodulating |
| 02/04/1998 | EP0546088B1 Frequency modulated synthesizer using low frequency offset mixed vco |
| 02/03/1998 | US5715353 Sine-wave modulator and playback/recording modulator-demodulator for a high-fidelity video playback/recording system |
| 02/03/1998 | US5714917 Device incorporating a tunable thin film bulk acoustic resonator for performing amplitude and phase modulation |
| 01/20/1998 | US5710524 Clock synthesizer for low EMI applications |
| 01/13/1998 | US5708399 Modulator and frequency multiplier for use therein |
| 01/13/1998 | US5708383 Integrated circuit frequency controlled modulator for use in a phase lock loop |
| 01/07/1998 | EP0817369A2 Method of up-converting and up-converter with pre-compensation filter |
| 12/24/1997 | CN1168572A Radio transmitter apparatus and method |
| 12/16/1997 | US5699383 High-power linear amplification using periodically updated amplitude and phase correction values |
| 12/16/1997 | US5699005 Clock generator for generating a system clock causing minimal electromagnetic interference |
| 12/11/1997 | WO1997047090A1 An audio a/d converter using frequency modulation |
| 12/10/1997 | EP0507919B1 Controlled slew rate amplifier |
| 12/09/1997 | US5697068 System and method for providing a non-invasively tunable transceiver synthesizer |
| 12/02/1997 | US5694430 Subscriber unit for wireless digital subscriber communication system |
| 12/02/1997 | US5694132 Voltage feedback linearizer |
| 12/02/1997 | US5694094 Narrow band arbitrary HF modulation and noise generator |
| 12/02/1997 | US5694093 Wideband IQ modulator with RC/CR automatic quadrature network |
| 11/26/1997 | EP0809195A2 Analog waveform communications reduced instruction set processor |
| 11/19/1997 | EP0436704B1 Modulator circuit |
| 11/12/1997 | EP0806089A1 A method and circuit for creating a modulated signal in a transceiver |
| 11/11/1997 | US5686870 Mixer |
| 11/04/1997 | US5684435 Analog waveform communications reduced instruction set processor |
| 10/30/1997 | DE19713441A1 Digital quadrature modulation signal parameter measuring apparatus |
| 10/29/1997 | EP0803147A1 Transmitter comprising carrier suppression and dc offset reduction means |
| 10/22/1997 | EP0801848A2 Frequency synthesizer |
| 10/15/1997 | EP0801465A1 Radio transmitter apparatus |
| 10/12/1997 | CA2202317A1 Radio transmitter apparatus |
| 10/01/1997 | CN1161116A Automatic tuning of a radio transceiver |
| 09/30/1997 | US5673051 Discrete phase modulator |
| 09/25/1997 | WO1997035412A1 Method and apparatus for routing a digitized rf signal to a plurality of paths |
| 09/24/1997 | EP0796521A1 Device for the noise-free modulation and demodulation of analogue signals used for transmitting information along the shielding of power transmission cables |
| 09/24/1997 | CN1160461A Digital QAM and VSB modulator and demodulator |
| 09/17/1997 | EP0795962A2 Synthesized oscillation circuit |
| 08/27/1997 | EP0792010A1 Frequency tracking filter, signal processing circuit with tunable transconductance and mehtod of controlling a transconductance circuit |
| 08/21/1997 | WO1997030521A1 Linear transmitter using predistortion |
| 08/21/1997 | CA2245707A1 Linear transmitter using predistortion |
| 08/20/1997 | EP0789953A1 Automatic tuning of a radio transceiver |
| 08/12/1997 | US5657154 Monitoring system for all optical regenerators |
| 08/05/1997 | US5655047 Video signal frequency modulator having automatic control function and controlling method therefor |
| 07/30/1997 | EP0507926B1 Linear transmitter training method and apparatus |
| 07/24/1997 | WO1997026704A1 Switchable voltage-controlled oscillator |
| 07/24/1997 | CA2242919A1 Switchable voltage-controlled oscillator |
| 07/17/1997 | WO1997025773A1 Method and device for modulating the frequency of a high-frequency signal |
| 07/17/1997 | DE19601013A1 Verfahren und Anordnung zur Frequenzmodulation eines hochfrequenten Signals Method and system for frequency modulation of a high-frequency signal |
| 07/13/1997 | CA2194824A1 Digital and analog modulator |
| 07/09/1997 | EP0783147A2 Modulator having individually placed edges |
| 07/01/1997 | US5644602 Direct digital frequency synthesizer for use in a subscriber unit of a wireless digital communication system |
| 07/01/1997 | US5644260 RC/CR automatic quadrature network |
| 06/26/1997 | WO1997023032A1 Digital calibration of a transceiver |
| 06/25/1997 | EP0780974A1 Discrete phase modulator |
| 06/25/1997 | CN1152818A Modulator and used frequency multiplicator thereof |
| 06/24/1997 | US5642081 FMCW VCO closed loop linearizer |
| 06/10/1997 | CA2120216C Quadrature modulator |
| 05/27/1997 | US5634202 Method and apparatus for integrating a plurality of analog input signals prior to transmitting a communications signal |
| 05/27/1997 | CA2096664C Quadrature modulation circuit |
| 05/22/1997 | WO1997018625A1 Fm modulator |
| 05/22/1997 | WO1997018624A1 Fm modulator |
| 05/20/1997 | US5631920 Spread spectrum clock generator |
| 05/14/1997 | CN1149941A Multiple access up converter/modulator and method |
| 05/06/1997 | US5627500 Phase modulator having individually placed edges |
| 05/01/1997 | WO1997015980A1 Transmitter comprising carrier suppression and dc offset reduction means |
| 04/30/1997 | DE19637942A1 Time base phase variation for digital oscilloscope |
| 04/30/1997 | DE19539939A1 Code transmitter e.g. for motor vehicle theft prevention system |
| 04/29/1997 | US5625318 Differential amplifier having a double differential amplifier pair with interconnected control electrodes |
| 04/23/1997 | EP0769872A2 Circuit with a high frequency receiver stage and a transmission stage |
| 04/22/1997 | US5623226 Automatic calibration of carrier suppression and loop phase in a Cartesian amplifier |
| 04/16/1997 | EP0639306B1 Method and apparatus for amplifying, modulating and demodulating |
| 04/16/1997 | CN1147705A Nonradiative dielectric line apparatus and instrument for measuring characteristics of circuit board |
| 04/09/1997 | CN1147318A Synchronous detector and method for synchronous detection |