Patents
Sitemap › H03 - Basic electronic circuitry › H03C - Modulation › H03C 3 - Angle modulation
Patents for H03C 3 - Angle modulation (3,926)
03/1991
03/27/1991EP0418862A2 Frequency modulation circuit using VCO
03/26/1991US5003504 FM modulator for an input impulse signal
03/05/1991CA1281080C Digital zero-if selectivity section
03/01/1991CA2021749A1 Bi-phase code generation and amplification circuit for microwave and millimeter-wave frequencies
02/1991
02/27/1991CN1049581A Subscriber unit for wireless digital subscriber communication system
02/21/1991WO1991002404A1 Modulator circuit
02/19/1991US4994768 Frequency synthesizer with FM modulation
02/19/1991US4994767 Oscillator phase-noise reduction
02/19/1991US4994766 Frequency modulator
01/1991
01/31/1991DE3924860A1 Sensor modulation signal generator - has first memory at data input bus of second memory, and control module of latter address bus
01/30/1991CN1048958A Channel frequency generator for use with multi-frequency output generator
01/29/1991US4988960 FM demodulation device and FM modulation device employing a CMOS signal delay device
01/23/1991EP0409277A2 Frequency modulator
01/16/1991EP0408238A2 A frequency synthesiser
01/15/1991US4985688 Modulation system capable of accurately compensating for nonlinearities of an amplifier connected thereto
01/09/1991EP0406423A1 Method for transmission and reception of reflex-modulated signals
12/1990
12/27/1990EP0403877A1 Frequency modulator
12/27/1990EP0403492A1 Bandswitching a two-way radio having a pll.
12/12/1990EP0401947A2 PLL oscillator circuit modulatable by an analog, low frequency modulating voltage
12/11/1990US4977610 Transmitter for sending an audio signal
12/05/1990EP0400027A1 Method and apparatus for quadrature modulation.
11/1990
11/29/1990WO1990014711A1 A channel frequency generator for use with a multi-frequency output generator
11/29/1990WO1990014710A1 Modulated clock source for logic circuits
11/27/1990US4973923 Circuit arrangement for the generation of I,Q waveforms
11/20/1990US4972440 Transmitter circuit for efficiently transmitting communication traffic via phase modulated carrier signals
11/06/1990US4969210 Two-way radio having a PLL
11/06/1990US4968908 Method and apparatus for wide band phase modulation
10/1990
10/24/1990EP0394069A2 Inductive modulator system
10/24/1990EP0393856A2 Modulation of adjacent channels
10/23/1990US4965534 Channel frequency generator for use with a multi-frequency output generator
10/08/1990WO1990012451A1 Frequency modulator
10/04/1990WO1990011643A1 Frequency synthesizer with fm modulation
10/03/1990CN1045879A Cordic complex multiplier
09/1990
09/27/1990DE3909074A1 Frequency-phase modulation generation - using signal to pulse period converter, electronic relay, and pulse period uninterrupted transmission
09/25/1990US4959625 Wide bond balanced output frequency modulator using a video signal as a modulation signal
09/19/1990EP0387294A1 Crystal controlled magnetron
09/11/1990US4956614 Device including a radial combiner for electromagnetic waves
09/11/1990US4955553 Coiling reel
09/06/1990DE4006464A1 Frequenzgenerator Frequency generator
08/1990
08/28/1990US4952889 Loop filter modulated synthesizer
08/28/1990US4952888 Phase locked loop for direct modulation
08/22/1990EP0383194A1 Dual port voltage controlled emitter coupled multivibrator
08/21/1990US4951237 Direct digital synthesizer with selectably randomized accumulator
08/16/1990EP0382697A2 Control voltage generator in a transmitter arrangement for digitally modulated signals
08/07/1990US4947408 Digital carrier demodulator employing components working beyond normal limits
07/1990
07/26/1990WO1990008432A1 Method for transmission and reception of reflex-modulated signals
07/25/1990EP0378719A1 Digital distortion generator
07/17/1990US4942374 Phase-locked loop type synthesizer having modulation function
07/11/1990EP0377519A2 Modulation system capable of accurately compensating for nonlinearities of an amplifier connected thereto
07/04/1990EP0375880A1 Frequency synthesis device
06/1990
06/06/1990EP0371193A1 Process and device for the conversion of voltage into frequency
06/05/1990US4932073 Transmitter having PLL circuit
06/05/1990US4932038 Digital telecommunications repeater
06/05/1990US4931749 Phase locked loop sweep frequency synthesizer
05/1990
05/30/1990EP0370170A2 Signal generator utilizing a combined phase locked and frequency locked loop
05/30/1990EP0370169A2 Signal generator utilizing a combined phase locked and frequency locked loop
05/23/1990EP0368884A1 Improvements in or relating to oscillator phase-noise reduction
05/17/1990WO1990005408A1 Diode circuit flicker-noise reduction
05/15/1990US4926144 Multi-function modulation and center frequency control port for voltage controlled oscillator
05/03/1990DE3836822A1 Frequency modulator with PLL for transmitting optionally NRZ data signals or voice signals
04/1990
04/26/1990DE3835617A1 Method for generating a frequency modulation
04/17/1990US4918529 Device for setting minimal and maximal frequencies of a frequency modulated video signal
04/17/1990US4918407 Oscillation circuit
04/17/1990US4918405 Signal generator utilizing a combined phase locked and frequency locked loop
03/1990
03/28/1990EP0360178A2 Transmitter circuit for efficiently transmitting communication traffic via phase modulated carrier signals
03/28/1990EP0360157A2 Oscillation circuit
03/20/1990US4910801 Integrating coupling circuit for coupling a modulator to a ceramic filter, useful with amplitude modulation receivers
03/14/1990EP0357996A1 Frequency modulator utilizing frequency synthesizer
02/1990
02/27/1990US4904964 Voltage control oscillator with modulation compensation
02/27/1990US4904956 Linear digital frequency sweep synthesizer
02/21/1990CN1006949B Frequency modulation one-way single-carr generator
02/20/1990US4902987 Inductive modulator system
01/1990
01/30/1990US4897738 Circuit for generating a frequency-modulated signal indicative of data to be recorded onto magnetic tape
01/30/1990US4897618 Harmonic frequency selecting circuit
01/23/1990US4896287 Cordic complex multiplier
01/17/1990EP0351153A2 Frequency modulator
01/09/1990US4893316 Digital radio frequency receiver
12/1989
12/26/1989US4890301 Arrangement for compensating errors in a quadrature modulator
12/26/1989US4890071 Signal generator utilizing a combined phase locked and frequency locked loop
11/1989
11/28/1989US4884042 Dual port voltage controlled emitter coupled multivibrator
11/23/1989DE3908243A1 Frequency modulator with PLL stabilisation
11/16/1989DE3815680A1 Frequency modulator for periodic signals
11/08/1989EP0340870A2 Digital frequency synthesizer and digital modulator using same
11/02/1989EP0339605A2 Phase-locked loop type synthesizer having modulation function
10/1989
10/25/1989EP0338742A2 Direct digital synthesizer with selectably randomized accumulator
10/18/1989EP0337268A2 Frequency modulaton method and system
10/04/1989EP0335037A1 Direct conversion radio
09/1989
09/26/1989US4870384 Frequency or phase modulation
09/26/1989US4870374 Modulator producing phase modulation by combining amplitude modulated signals
09/26/1989CA1260077A1 Digital phase shifter
09/13/1989EP0332087A1 Frequency modulator
09/12/1989US4866404 Phase locked frequency synthesizer with single input wideband modulation system
09/06/1989EP0330983A2 Voltage-controlled oscillator with a line resonator
09/05/1989US4864257 Phase locked frequency synthesizer with single input gain compensated wideband modulation system
08/1989
08/29/1989US4862116 Active phase and amplitude modulator
08/24/1989WO1989007865A1 Bandswitching a two-way radio having a pll
08/02/1989EP0108124B1 Variable frequency generator responsive to digital data
07/1989
07/26/1989EP0325394A2 Transmitter having PLL circuit
07/26/1989EP0325025A1 Frequency modulation in phase-locked loop
07/18/1989CA1257663A1 Angle modulated waveform synthesizer
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