H03B 21 - Generation of oscillations by combining unmodulated signals of different frequencies

Patents for H03B 21 - Generation of oscillations by combining unmodulated signals of different frequencies (1,067)
05/2003
05/22/2003	WO2003043177A2 Agile spread waveform generator and photonic oscillator
05/20/2003	US6566964 Frequency synthesizer and oscillation frequency control method
05/08/2003	WO2003038943A1 Temperature compensated oscillator
05/07/2003	EP1307960A1 Frequency synthesizer
05/07/2003	EP0988691A4 Frequency synthesis circuit tuned by digital words
05/02/2003	EP1305842A1 A non-radiative dielectric waveguide circuit positioned between two metal plates which are multi-layered for different sizes of spacers
04/2003
04/09/2003	CN1409524A Complex circuit safety digital frequency mixing system
04/08/2003	CA2238093C Direct digital frequency synthesizer using pulse gap shifting technique
04/03/2003	WO2003027847A1 Method and apparatus for direct digital synthesis of frequency signals
04/01/2003	US6540266 Spin forming a tubular workpiece to form a radial flange on a tubular flange and a thick rim on the radial flange
03/2003
03/27/2003	US20030058004 Method and apparatus for direct digital synthesis of frequency signals
03/20/2003	US20030055518 Digital mixing system with double arrangement for fail safe
03/20/2003	US20030052743 Device for producing a signal having a substantially temperature-independent frequency
03/13/2003	WO2003021764A2 Method and circuit for creating a sub-harmonic of a periodic signal
03/05/2003	EP1287616A2 Pll for synthesizing frequencies having rational relationships with a reference frequency
03/04/2003	US6529052 Frequency multiplier based on exclusive-or gate and frequency divider
02/2003
02/27/2003	WO2003017465A1 Mixer circuit with image frequency rejection which is intended, in particular, for an rf receiver with zero or low intermediate frequency
02/27/2003	WO2002101403A3 Low noise microwave synthesizer employing high frequency combs for tuning drift cancel loop
02/18/2003	US6522177 Frequency synthesis device
02/18/2003	US6522176 Low spurious direct digital synthesizer
02/11/2003	US6518801 Alias suppression method for 1-bit precision direct digital synthesizer
01/2003
01/30/2003	WO2002033818A3 Frequency synthesiser
01/23/2003	WO2003007471A2 Mixer
01/23/2003	WO2003007470A2 Harmonic mixer
12/2002
12/26/2002	US20020196088 Low noise microwave synthesizer employing high frequency combs for tuning drift cancel loop
12/19/2002	WO2002101403A2 Low noise microwave synthesizer employing high frequency combs for tuning drift cancel loop
12/19/2002	US20020190760 Arbitrary waveform synthesizer using a free-running ring oscillator
12/12/2002	US20020186085 Voltage controlled oscillation device
12/10/2002	US6493410 Wide band high resolution synthesizer
12/05/2002	US20020180538 Local oscillator architecture to reduce transmitter pulling effect and minimize unwanted sideband
11/2002
11/21/2002	WO2002093731A1 Circuit arrangement for translating an oscillator frequency into a carrier frequency
11/19/2002	US6483388 Direct digital frequency synthesizer and a hybrid frequency synthesizer combining a direct digital frequency synthesizer and a phase locked loop
11/14/2002	US20020167345 Waveform generation apparatus and waveform generation method
11/13/2002	EP0872051B1 Method and apparatus for controlling frequency of a multi-channel transmitter
10/2002
10/24/2002	DE10159878A1 Ein Hochleistungs-Mikrowellensynthesizer unter Verwendung eines Mehrfachmodulator-Bruchzahl-n-Teilers A high power microwave synthesizer using a multiple modulator fractional-N divider
10/10/2002	US20020145475 Dual conversion RF synthesizer utilizing improved push-push VCO design
10/01/2002	US6459341 Voltage controlled oscillation device
09/2002
09/24/2002	US6456143 Frequency multiplier circuit and semiconductor integrated circuit
09/19/2002	US20020130689 Frequency synthesizer
09/18/2002	CN1370347A Electronic circuit arrangement generating transmit frequency
09/12/2002	US20020125722 Spin forming a tubular workpiece to form a radial flange on a tubular flange and a thick rim on the radial flange
09/11/2002	CN1368795A Frequency synthesizer and method for generating frequency division signal
09/06/2002	WO2002035712A3 Radio transmitters
09/05/2002	DE10122919A1 Mobile phone chip circuit, converting oscillator frequency to GHz carrier frequency, mixes divided- and direct local oscillator frequencies
08/2002
08/22/2002	US20020114386 Fractional N synthesizer with reduced fractionalization spurs
08/14/2002	CN1364340A 时钟信号发生器 Clock signal generator
08/06/2002	US6429796 Method and device for spectrally pure, programmable signal generation
07/2002
07/31/2002	EP1227592A2 Frequency synthesizer and method of generating frequency-divided signal
07/11/2002	US20020090917 Frequency synthesizer and method of generating frequency-divided signal
07/03/2002	EP1219019A1 Local oscillator apparatus for radio frequency communication systems
06/2002
06/27/2002	US20020081983 Signal source with multiphase filter
06/20/2002	WO2001091299A3 Pll for synthesizing frequencies having rational relationships with a reference frequency
06/13/2002	WO2002047248A1 Very low noise local oscillator for use in wireless communication transceiver
06/13/2002	WO2002047247A1 Multi-mode radio communications device using a common reference oscillator
06/13/2002	US20020070768 High performance microwave synthesizer using multiple-modulator fractional-N divider
06/12/2002	EP1213830A1 Multi-mode radio communications device using a common reference oscillator
06/12/2002	EP1212671A1 Method and device for spectrally pure, programmable signal generation
06/05/2002	EP1210763A1 Master frequency generator
05/2002
05/29/2002	EP1208646A2 Master frequency generator
05/28/2002	US6396314 Arrangement for the warbling (sweeping) of a frequency synthesizer
05/23/2002	US20020061765 Frequency generating system for a mobile radio dual-band transceiver
05/02/2002	WO2002035712A2 Radio transmitters
04/2002
04/25/2002	WO2002033818A2 Frequency synthesiser
04/25/2002	CA2426116A1 Frequency synthesiser
04/24/2002	EP1198889A1 Clock signal generator
04/23/2002	US6377094 Arbitrary waveform synthesizer using a free-running ring oscillator
04/18/2002	WO2002031962A2 Quadrature frequency converter
04/16/2002	US6373344 High performance dual-YTO microwave synthesizer
04/16/2002	US6373294 Microprocessor stabilized frequency source and method for generating a stable-frequency signal
04/04/2002	US20020039894 Frequency synthesizer and multi-band radio apparatus using said frequency synthesizer
03/2002
03/27/2002	EP1191681A2 Signal source with a polyphase filter
03/21/2002	US20020034932 Method and apparatus for generating a variable capacitance for synthesizing high-frequency signals for wireless communications
03/20/2002	EP1188228A1 Electronic circuit arrangement generating a transmit frequency
03/19/2002	US6359476 Frequency correction circuit for a periodic source such as a crystal oscillator
03/12/2002	US6356810 Programmable frequency reference for a signal synthesizer
03/12/2002	US6356124 Method and apparatus for generating a digital sine wave signal
03/07/2002	US20020028667 Frequency synthesizer capable of obtaining signals in three frequency bands
03/06/2002	EP1184970A2 Frequency synthesizer and multi-band radio apparatus using said frequency synthesizer
02/2002
02/28/2002	US20020024364 Frequency synthesizer having shortened lock-up time
02/21/2002	WO2002015383A1 Frequency adjustable oscillator and methods of operation
02/21/2002	US20020021180 Frequency controlled oscillator
02/20/2002	EP1180266A1 Frequency synthesis system for a mobile telephone dual-band transceiver
02/07/2002	WO2002011278A1 Frequency synthesizer
01/2002
01/24/2002	US20020008588 Direct digital frequency synthesizer and a hybrid frequency synthesizer combining a direct digital frequency synthesizer and a phase locked loop
01/09/2002	EP1170857A2 Electronic equipment containing a frequency multiplying circuitm a frequency multiplying circuit, and a procedure for multiplying signals
01/02/2002	EP1168596A2 Multifrequency RF signal generating apparatus
12/2001
12/27/2001	US20010054919 Electronic device comprising a frequency multiplier circuit, frequency multiplier circuit and method of multiplying signal frequencies
12/27/2001	US20010054822 Spin forming a tubular workpiece to form a radial flange on a tubular flange and a bead or thick rim on the radial flange
12/25/2001	US6333649 Error feed-forward direct digital synthesis
12/20/2001	WO2001052001A3 Device for producing a signal having a substantially temperature-independent frequency
12/12/2001	CN1326264A Frequency multiplier and semiconductor integrated circuit
12/06/2001	US20010049269 Device for generating RF signals at multiple frequencies
12/04/2001	US6327463 Method and apparatus for generating a variable capacitance for synthesizing high-frequency signals for wireless communications
11/2001
11/29/2001	WO2001091299A2 Pll for synthesizing frequencies having rational relationships with a reference frequency
11/29/2001	DE19834373A1 Delay-free switched oscillator has main oscillator output frequency fed to frequency divider whose output signal can be switched off by switching off frequency divider
11/22/2001	US20010043109 Frequency multiplier circuit and semiconductor integrated circuit
11/21/2001	EP1156581A2 Frequency multiplier circuit and semiconductor integrated circuit
11/20/2001	US6320431 Apparatus and method of generating numerically controlled oscillator signals
11/13/2001	US6316943 Signal generator
10/2001
10/30/2001	US6310522 Multiple-push oscillator

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