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)
10/2004
10/28/2004	US20040214548 Mixer circuit with image frequency rejection, in particular for an RFreceiver with zero or low intermediate frequency
10/27/2004	CN1541442A Mixer circuit with image frequency rejection which is intended, in particular, for RF receiver with zero or low intermediate frequency
10/20/2004	CN1172446C Requency synthesizer and oscillation frequency controlling method
10/19/2004	US6807402 Device for generating RF signals at multiple frequencies
10/19/2004	US6806779 Frequency synthesizer with on-chip inductor
10/19/2004	US6806746 Direct frequency synthesizer for offset loop synthesizer
10/07/2004	US20040198256 Frequency synthesizers for supporting voice communication and wireless networking standards
09/2004
09/23/2004	US20040183604 High frequency signal source and method of generating same using dielectric resonator oscillator (DRO) circuit
09/22/2004	CN1168198C Frequency multiplier circuit
08/2004
08/31/2004	US6785528 Quadrature divider
08/31/2004	US6785525 Multiband frequency generation using a single PLL-circuit
08/25/2004	EP1449272A1 Temperature compensated oscillator
08/24/2004	US6781473 High-speed low-power implementation for multi-channel numerically controlled oscillator (NCO)
08/24/2004	CA2349478C Direct digital frequency synthesizer and a hybrid frequency synthesizer combining a direct digital frequency synthesizer and a phase locked loop
07/2004
07/29/2004	WO2004064246A1 Regenerative divider for up and down conversion of radio frequency (rf) signals
07/29/2004	CA2511819A1 Regenerative divider for up and down conversion of radio frequency (rf) signals
07/21/2004	EP1438785A2 Method and circuit for creating a sub-harmonic of a periodic signal
07/15/2004	US20040137858 Frequency generation in a wireless communication unit
07/08/2004	US20040130358 Frequency output generation
07/06/2004	US6760575 Method and apparatus for generating a variable capacitance for synthesizing high-frequency signals for wireless communications
06/2004
06/09/2004	EP1425845A2 Harmonic mixer
05/2004
05/26/2004	EP1422822A2 Frequency generation in a wireless communication unit
05/20/2004	US20040097206 Circuit configuration for the frequency conversion of an oscillator frequency into a carrier frequency
05/19/2004	EP0875094A4 Method and apparatus for selecting from multiple mixers
05/12/2004	EP1417750A1 Mixer circuit with image frequency rejection which is intended, in particular, for an rf receiver with zero or low intermediate frequency
05/12/2004	EP1188228B1 Electronic circuit arrangement generating a transmit frequency
05/06/2004	WO2003021764A3 Method and circuit for creating a sub-harmonic of a periodic signal
04/2004
04/28/2004	CN1147991C Electronic circuit arrangement generating transmit frequency
04/27/2004	US6728327 Lower-jitter phase-locked loop
04/22/2004	WO2004021572A3 Multiple band local oscillator frequency generation circuit
04/22/2004	WO2003043178A3 Frequency agile spread waveform generator and method and pre-processor apparatus and method
04/20/2004	US6724266 Device for producing a signal having a substantially temperature-independent frequency
04/15/2004	WO2004032327A1 Frequency output generation
03/2004
03/30/2004	US6714089 High frequency signal source and method of generating same using dielectric resonator oscillator (DRO) circuit
03/23/2004	US6711360 Duty-cycle adjustable clock generator with low reverse bias and zero DC level
03/18/2004	US20040051936 Frequency synthesiser
03/11/2004	WO2004021572A2 Multiple band local oscillator frequency generation circuit
03/10/2004	EP1395841A2 Low noise microwave synthesizer employing high frequency combs for tuning drift cancel loop
03/09/2004	US6703904 High frequency oscillator
03/04/2004	WO2003044959A3 Low spurious direct digital synthesizer
03/04/2004	US20040041642 Multiple band local oscillator frequency generation circuit
03/03/2004	EP1393436A1 Circuit arrangement for translating an oscillator frequency into a carrier frequency
03/03/2004	CN1479967A Multi-mode radio communications device using common reference oscillator
02/2004
02/26/2004	US20040037379 Multi-mode radio communications device using a common reference oscillator
02/26/2004	US20040036509 Frequency synthesizer
02/19/2004	US20040032898 Digital spread spectrum frequency synthesizer
02/12/2004	DE10159878B4 Ein Hochleistungs-Mikrowellensynthesizer unter Verwendung eines Mehrfachmodulator-Bruchzahl-n-Teilers A high power microwave synthesizer using a multiple modulator fractional-N divider
01/2004
01/22/2004	US20040012452 Frequency Adjustable oscillator and methods of operation
01/22/2004	US20040011191 Method and circuit for creating a sub-harmonic of a periodic signal
01/21/2004	CN1470100A Method and circuit to generate sinusoids for modulators and frequency converters
01/20/2004	US6681235 Frequency synthesizer and Gaussian noise generator using the same
01/15/2004	WO2003084051A3 An arbitrary waveform synthesizer using a free-running ring oscillator
12/2003
12/30/2003	US6671315 DTMF signal generator
12/24/2003	CN1463365A Low noise microwave synthesizer employing high frequency combs for tuning drift cancel loop
12/16/2003	US6664832 Arbitrary waveform synthesizer using a free-running ring oscillator
12/16/2003	US6664819 Frequency synthesizer for improving a unique DDS characteristic
12/11/2003	WO2003103147A1 High frequency signal source using dielectric resonator oscillator circuit
12/04/2003	US20030222725 High frequency signal source and method of generating same using dielectric resonator oscillator (dro) circuit
11/2003
11/26/2003	EP1208646B1 Master frequency generator
11/20/2003	WO2003043177A3 Agile spread waveform generator and photonic oscillator
11/20/2003	DE19939036C2 Anordnung zum Wobbeln (Sweepen) eines Frequenzsynthesesizers Arrangement of sweeping (sweep) of Frequenzsynthesesizers
11/19/2003	EP1362412A2 Quadrature frequency converter
11/13/2003	WO2003094377A1 Frequency synthesizers for supporting voice communication and wireless networking standards
11/13/2003	CA2484194A1 Frequency synthesizers for supporting voice communication and wireless networking standards
11/12/2003	CN1455983A 频率合成器 Frequency synthesizer
11/11/2003	US6644083 Spin forming a tubular workpiece to form a radial flange on a tubular flange and a bead or thick rim on the radial flange
11/05/2003	CN1454401A A non-radiative dielectric waveguide circuit positioned between two metal plates which are multi-layered for different seizes of spacers
11/05/2003	CN1127200C Frequency synthetic circuit regulated by digit
11/04/2003	US6642754 Clock signal generator employing a DDS circuit
10/2003
10/30/2003	WO2003007471A3 Mixer
10/29/2003	CN1126339C Systen and method for lookup table by reduced NCD
10/21/2003	US6636086 High performance microwave synthesizer using multiple-modulator fractional-N divider
10/09/2003	WO2003084051A2 An arbitrary waveform synthesizer using a free-running ring oscillator
10/09/2003	US20030190905 Quadrature divider
10/08/2003	EP1351378A1 Quadrature divider
09/2003
09/25/2003	WO2002031962A3 Quadrature frequency converter
09/23/2003	US6625422 Signal generator
09/18/2003	WO2003077413A1 Circuit arrangement for frequency conversion and mobile radio device with the circuit arrangement
08/2003
08/27/2003	EP1099298B1 Synthesising a sine wave
08/21/2003	US20030155949 Multi-band frequency synthesiser for mobile terminals
08/13/2003	EP1180266B1 Frequency synthesis system for a mobile telephone dual-band transceiver
07/2003
07/30/2003	EP1330881A2 Radio transmitters
07/17/2003	WO2003058854A1 Duty-cycle adjustable clock generator with low reverse bias and zero dc level
07/17/2003	WO2003058853A1 Duty-cycle adjustable clock generator
07/16/2003	EP1327298A2 Frequency synthesiser
07/15/2003	US6593821 Frequency controlled oscillator
06/2003
06/25/2003	EP1198889B1 Clock signal generator
06/25/2003	CN1112773C Method and apparatus for selecting from multiple mixer
06/19/2003	WO2003007470A3 Harmonic mixer
06/18/2003	EP1320189A1 Multi-band frequency synthesiser for mobile terminals
06/11/2003	EP1317796A1 Frequency adjustable oscillator and methods of operation
06/11/2003	CN1423762A Device for producing a signal having a substantially temperature-independent frequency
06/03/2003	US6574462 Local oscillator apparatus for radio frequency communication systems
06/03/2003	US6573766 Synthesizing a sine wave
06/03/2003	US6573763 Waveform generation apparatus and waveform generation method
05/2003
05/30/2003	WO2003044959A2 Low spurious direct digital synthesizer
05/29/2003	US20030098746 High frequency oscillator
05/28/2003	CN1110123C Medium frequency output-less bridge balance mixer with microwave FET
05/27/2003	US6570458 Low noise microwave synthesizer employing high frequency combs for tuning drift cancel loop
05/22/2003	WO2003043178A2 Frequency agile spread waveform generator and method and pre-processor apparatus and method

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