Patents
Patents for H03C 3 - Angle modulation (3,926)
04/1996
04/09/1996US5506547 Frequency modulator having LC oscillator with switchable frequencies
04/09/1996US5506546 Method and apparatus for generating transmitting wave
04/09/1996US5506545 Electronic apparatus having low radio frequency interference from controlled excursion noise-modulated system clock signal
04/03/1996EP0704117A1 Compensated digital frequency synthesizer
04/03/1996CN1119800A Frequency modulation circuit
04/02/1996US5504465 Microwave modulator having adjustable couplers
04/02/1996US5504464 Frequency modulating system including clamp and transconductance amplifier
04/02/1996US5504463 Frequency modulating system including VCD made of transconductance amplifiers
03/1996
03/26/1996US5502420 Cascode VCO frequency modulator
03/26/1996CA2068420C Controlled slew rate amplifier
03/05/1996US5497509 FM-PM receivers with increased sensitivity
03/05/1996US5497399 Digital FM modulating apparatus
03/05/1996CA2056021C Digital quadrature phase detection circuit
02/1996
02/27/1996US5495208 Wide band tunable and modulatable reference oscillator
02/27/1996US5495206 Fractional N frequency synthesis with residual error correction and method thereof
02/21/1996EP0697155A1 Wireless data transceiver
02/20/1996US5493583 Wireless data transceiver
02/20/1996US5493257 Modulator with biasing circuit to minimize output distortion
02/13/1996US5491458 Apparatus for spreading the spectrum of a signal and method therefor
02/13/1996US5491457 F-modulation amplification
02/07/1996CN1116469A Method and apparatus for integrating a plurality of input signals
02/07/1996CN1116375A Quadrature modulator with adaptive suppression of carrier leakage
02/07/1996CN1030954C Digital FM synthesizer for record circuitry
01/1996
01/31/1996EP0695067A2 Modem with local oscillator phase correction
01/31/1996CN2218992Y Phase-locked loop module of frequency modulation sound accompaniment
01/31/1996CN1116017A Fractional-N frequency synthesis with residual error correction
01/30/1996US5488627 Spread spectrum clock generator and associated method
01/23/1996US5487183 Method and apparatus for a data transmitter
01/17/1996EP0692867A1 FM modulation circuit and method
01/16/1996US5485129 Method and apparatus for digital modulation using pulse deletion
01/16/1996CA2105375C Adaptive phase control for a power amplifier predistorter
01/11/1996DE4423946A1 Circuit generating FM or PM output signals from input signals
01/09/1996US5483203 Frequency synthesizer having modulation deviation correction via presteering stimulus
01/02/1996US5481231 Lumped element four port coupler
01/02/1996US5481230 Phase modulator having individually placed edges
12/1995
12/27/1995EP0689323A2 Phase modulator with gain control
12/27/1995EP0689322A1 Tunable BPSK modulator
12/27/1995EP0688446A1 Radio frequency telecommunications transceiver
12/19/1995US5477199 Digital quadrature amplitude and vestigial sideband modulation decoding method and apparatus
12/14/1995WO1995034126A1 Self-adjusting modulator
12/14/1995CA2168887A1 Self-adjusting modulator
12/12/1995CA2069513C Linear transmitter training method and apparatus
12/05/1995US5473280 Modulation/demodulation method and system for realizing quadrature modulation/demodulation technique used in digital mobile radio system with complex signal processing
11/1995
11/29/1995EP0684696A2 Frequency modulator with a trimming circuit
11/28/1995US5471187 Data signal comparation with self-adjusting threshold
11/22/1995CN1112312A Method and circuit arrangement for compensating the dc offset voltage of a d/a converter
11/21/1995US5469126 I/Q-modulator and I/Q-demodulator
11/21/1995US5469119 Linear voltage-controlled oscillator using fixed capacitors in lieu of varactors
11/21/1995US5469105 Transmitter and power amplifier therefor
11/21/1995CA2048645C Multiaccumulator sigma-delta fractional-n synthesis
11/14/1995US5467373 Digital frequency and phase modulator for radio transmission
10/1995
10/31/1995US5463356 FM band multiple signal modulator
10/24/1995US5461348 PLL circuit modulatable by a modulation signal having a direct current component
10/12/1995WO1995027339A1 Method and apparatus for controlling a data transmitter
10/12/1995WO1995027330A1 Synchronous detector and methods for synchronous detection
10/12/1995WO1995027329A1 A tuning circuit
10/12/1995CA2186853A1 Synchronous detector and methods for synchronous detection
10/11/1995EP0676860A2 Frequency modulation circuit
10/05/1995DE4410721A1 Modulated oscillator frequency generating circuit
10/03/1995US5455543 Low power consumption binary phase shift keyed (BPSK) modulator using absorptive electronic switching techniques
09/1995
09/26/1995US5453720 Digital adjustable phase modulator and method
09/26/1995US5453714 Binary FM demodulator with self-adjusting resonant operating frequency according to demodulated binary output signal duty cycle
09/21/1995WO1995023458A3 Method and apparatus for automatic modulation calibration in a radio transmitter
09/20/1995EP0539403B1 Fractional-n synthesizer having modulation spur compensation
09/19/1995US5451913 Compact MMIC tunable biphase modulator and method
09/12/1995US5450043 Quadrature modulator with distortion compensation
09/08/1995WO1995024074A1 Method of and apparatus for controlling modulation of digital signals in frequency-modulated transmissions
09/08/1995CA2184811A1 Method of and apparatus for controlling modulation of digital signals in frequency-modulated transmissions
09/05/1995US5448203 Negative-feedback amplifier and feedback controlling method thereof
08/1995
08/31/1995WO1995023458A2 Method and apparatus for automatic modulation calibration in a radio transmitter
08/31/1995WO1995023453A1 Power amplifier having nested amplitude modulation controller and phase modulation controller
08/30/1995EP0630535B1 Pll circuit modulatable by a modulation signal having a direct current component
08/29/1995US5446422 Dual mode FM and DQPSK modulator
08/23/1995EP0403492B1 Bandswitching a two-way radio having a pll
08/22/1995US5444737 Wireless data transceiver
08/17/1995WO1995022196A1 Continuous phase modulation device using a frequency synthesizer with a phase-locked loop
08/15/1995US5442327 MMIC tunable biphase modulator
08/01/1995US5438301 Modem having a phase corrector and a voltage controlled oscillator implemented using a multi-stage ring oscillator
07/1995
07/25/1995US5436599 Method and apparatus for digital modulation using pulse addition
07/19/1995EP0497801B1 A phase locked loop for producing a reference carrier for a coherent detector
07/18/1995US5434887 Quadrature modulation circuit for use in a radio transmitter
07/05/1995EP0661801A1 Quadrature modulator with adaptive suppression of carrier leakage
07/04/1995US5430763 Frequency stabilizing circuit used for a pulse modulator for an image signal including a synchronous signal
07/04/1995US5430416 Power amplifier having nested amplitude modulation controller and phase modulation controller
06/1995
06/22/1995WO1995017039A1 Narrow band, arbitrary hf modulation and noise generator
06/20/1995CA2125294C Differential modulator using concurrent pulse addition and subtraction
06/15/1995WO1995016304A1 Phase/frequency modulator
06/13/1995US5424688 Frequency synthesizer apparatus incorporating phase modulation tracking means
06/13/1995CA2080013C Phase locked loop with d.c. modulation
06/06/1995US5423075 Combined radio transmission and reception apparatus with a PLL circuit
06/06/1995CA1335826C Angle modulator
05/1995
05/31/1995EP0655841A1 DC voltage offset compensation
05/31/1995EP0655829A1 Spread spectrum clock generator and associated method
05/30/1995US5420536 Linearized power amplifier
05/18/1995WO1995013664A1 Method and apparatus for integrating a plurality of input signals
05/18/1995WO1995013651A1 Phase-locked loop frequency modulation circuit for input modulation signals having low-frequency content
05/18/1995CA2176365A1 Phase-locked loop frequency modulation circuit for input modulation signals having low-frequency content
05/16/1995CA2038425C Carrier reset fm modulator and method of frequency modulating video signals
05/10/1995EP0591260B1 Arrangement for a modulator
05/10/1995EP0400027B1 Method and apparatus for quadrature modulation
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