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7414487 Apparatus for providing an oscillating signal to a load  
An apparatus for providing an oscillating signal to a load comprises: a phase locked loop, PLL, comprising a feedback loop; a power control means for manipulating oscillating signal power; an...
7411461 Frequency and/or phase lock loops with beat frequency estimation  
A control loop ( 10 ) for producing an output signal with a stable nominal frequency is provided. The control loop includes inputs for reference ( 11 ) and oscillator ( 25 ) output signals, a beat...
7409029 Transmission device for automatically set an optimal point for a signal decision making  
There is provided a flexible transmission device capable of automatically setting an optimal point for a signal decision making with high accuracy, so that highly reliable high-quality signal...
7408416 Phase locked loop, signal generating apparatus and synchronization method  
A phase locked loop for outputting a high frequency signal by executing synchronization and frequency conversion based on an input signal includes a control-type oscillator, and a phase comparator...
7406303 Multi-sensory speech enhancement using synthesized sensor signal  
A synthesized alternative sensor signal is produced from an alternative sensor signal. The synthesized alternative sensor signal is computed using vocal tract resonances estimated based on the...
7398071 Loop filter with gear shift for improved fractional-N PLL settling time  
An integrated circuit radio frequency (RF) transmitter includes a phase locked loop having a multi-mode loop filter that is operable to provide wide band response with a fast settle time in a...
7397312 Spectrum analyzer and method for correcting frequency errors  
A spectrum analyzer corrects for internal frequency errors in a reference oscillator using a timing control signal. The reference oscillator provides a reference signal at a reference frequency. An...
7397311 Oscillator coupling to reduce spurious signals in receiver circuits  
A first receiver frequency reference is passively coupled to a second receiver by tapping a signal directly from the resonant element, such as a crystal, of an oscillator in the first receiver to...
7395044 Signal processing apparatus and method of differential transformer  
A measuring apparatus employing a differential transformer includes a high-frequency oscillator which generates a high-frequency signal having a frequency higher than the excitation frequency of...
7394321 Quadrature VCO system and method  
A low-power quadrature generator is provided for accurately generating in-phase signals and quadrature signals.
7391840 Phase locked loop circuit, electronic device including a phase locked loop circuit and method for generating a periodic signal  
A phase locked loop (PLL) circuit ( 1 ) comprising a loop input (11); a phase detector section ( 2 ) for detecting a phase difference between an input signal and a reference signal. The phase...
7389095 Variable frequency clock generator for synchronizing data rates between clock domains in radio frequency wireless communication systems  
A system, method and system are disclosed for using a variable frequency clock generator to synchronize an average data rate over intervals of time in a variable clock domain to make it equal to a...
7389087 Adaptive radio transceiver with filtering  
An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a...
7386286 High frequency low noise phase-frequency detector and phase noise reduction method and apparatus  
The present invention discloses a new type of extremely low-noise phase-frequency detector (PFD) 500 , broadband from DC to multi-GHz RF frequencies for PLL synthesizer applications. Free of any...
7382201 Signal generating apparatus and method thereof  
A signal generating apparatus is disclosed for generating a synthesized signal according to an input signal, the signal generating apparatus includes a phase-locked loop device for generating the...
7379728 Wireless communication system  
A wireless communication system includes: a filter; and a semiconductor chip including a signal processing integrated circuit having an amplifier, wherein a main surface of the semiconductor chip...
7365609 Hybrid stochastic gradient based digitally controlled oscillator gain KDCO estimation  
A novel hybrid stochastic gradient adaptation apparatus and method for calibrating the gain of an RF or non-RF digitally controlled oscillator (DCO). The adaptation algorithm determines a true...
7363015 Wide-frequency-range television tuner  
A television tuner includes a tuning circuit having two first varactor diodes for changing a tuning frequency, a mixer for converting a television signal to an intermediate frequency signal, an...
7359684 Wireless communication system with variable intermediate frequency transmitter  
A wireless communication device (UST), comprising an input for receiving baseband data (I, Q) in a first signal having a first frequency. The device also comprises circuitry ( 68 1 , 68 2 ) for...
7355490 Receiver having no tracking error  
A receiver includes an up/down counter that controls turning on/off of individual switching units, and a count signal generator that compares a control voltage with a first reference voltage and a...
7353011 Method and apparatus for operating a PLL for synthesizing high-frequency signals for wireless communications  
A method and apparatus for synthesizing high-frequency signals, such as wireless communication signals, includes a phase-locked loop (PLL) frequency synthesizer with a variable capacitance voltage...
7349680 Method and system for using PSK sync word for fine tuning frequency adjustment  
In RF transceivers, a method and system for using phase shift key (PSK) sync word for fine tuning frequency adjustment are provided. One aspect of the invention provides for adjusting a local...
7349446 Signal superimposition  
A method and apparatus are provided in which control data for a generator system is multiplexed onto a synchronization signal.
7343145 Radio control system for models  
In conventional radio controlled models, a receive frequency is changed with a changeover switch mounted in a receiver body. In the present invention, a frequency switching scheme, employing a...
7343144 Frequency synthesizer using PLL architecture for wireless frequency allocation  
An apparatus method to provide a frequency synthesizer using a phase locked loop in a communication device to provide a particular frequency allocation to generate an output from the PLL. The...
7343142 Tuner  
A digital terrestrial tuner has an RF input connected to a filter arrangement, whose output signal is supplied to a zero intermediate frequency frequency changer. The filter arrangement comprises a...
7342986 Digital PLL device  
A phase-locked-loop device includes a clock generator for generating a reference clock based on a binarized playback signal and a frequency of run-length data and for generating N-phase clocks...
7342461 Feedback circuit for minimizing VCO sensitivity  
System and method for adjusting supply voltage to VCO to minimize affects of circuit noise on VCO. Method includes obtaining a number of data points each by incrementing a counter by the number of...
7340220 Phase locked loop with power distribution  
A phase locked loop includes a detection module, a control conversion module, a controlled oscillation module, a divider module, and a power distribution module. The detection module is operably...
7336110 Differential amplitude controlled sawtooth generator  
A dual differential sawtooth signal generator includes a first sawtooth voltage generator that has a first capacitor and a second capacitor that are alternately charged with a feedback control...
7333789 Wide-band modulation PLL, timing error correction system of wide-band modulation PLL, modulation timing error correction method and method for adjusting radio communication apparatus having wide-band modulation PLL  
A broadband modulation PLL includes a PLL portion containing a voltage controlled oscillator ( 101 ), a frequency divider ( 105 ), a phase comparator ( 104 ) and a loop filter ( 103 ). A...
7332972 Phase-locked loop circuit  
Phase locked loop circuit ( 105 ) having a double entry VCO ( 158 ) and two independent charge pumps ( 171, 172 ), each connected with one of the entries of the VCO. Each of the VCO entries has a...
7324795 Method of controlling phase locked loop in mobile station, and mobile station  
A method of controlling a phase locked loop in a mobile station and a mobile station of a cellular telecommunications system are provided. The mobile station comprises an integrated phase locked...
7323944 PLL lock management system  
A PLL includes a charge pump, a loop filter, a VCO, and a calibration unit. The calibration unit performs coarse tuning to select one or multiple frequency ranges, performs fine tuning to determine...
7319884 FM radio device and transmission power control method  
A transmission power control method includes a step (a) of receiving by a receiver a radio wave signal, a step (b) of judging whether a first identification signal is included in the received radio...
7315732 Method for frequency conversion and receiver  
A method and device for frequency conversion is disclosed in which a first signal with a first frequency is converted into a second frequency through mixing with a divided oscillator signal and...
7315731 Method of measuring and calibrating frequency down converter  
A frequency down converter that maintains accuracy even if the frequency pass band is wide uses a reference frequency band within the frequency pass band, the reference frequency band being...
7313379 Generation of a self-correcting local oscillation  
A method and apparatus for generating a self-correcting local oscillation includes processing that begins by generating a frequency correction signal that represents undesired tones introduced by...
7313369 Communication semiconductor integrated circuit and radio communication system  
A communication semiconductor integrated circuit has an oscillator circuit forming part of a transmission PLL circuit fabricated on a single semiconductor chip together with an oscillator circuit...
7312669 Oscillation circuit  
An oscillation circuit for generating two oscillation signals having a phase difference of 90° by using an LC oscillator has a disadvantage for integration. Therefore, a differential type ring...
7312665 Oscillation control apparatus  
In a PLL comprising a voltage controlled oscillator (VCO) equipped with a variable resonator, a frequency divider, a phase comparator, and an low pass filter (LPF), a variable resonator control...
7310401 Programmable frequency detector for use with a phase-locked loop  
A frequency detector for use with a PLL utilizes a counter and a preset value to produce frequency information related to a VCO signal. The frequency information is used to control the frequency of...
7305219 Portable radio terminal and AFC control method  
A portable radio terminal for realizing automatic frequency control (AFC) for automatically controlling the oscillation frequency of an oscillator includes a unit for intermittently performing AFC...
7302237 Wideband signal generators, measurement devices, methods of signal generation, and methods of signal analysis  
A wideband signal generator according to one embodiment of the invention includes a variable frequency source and a direct digital synthesizer. Local oscillators, signal analyzers, modulators,...
7301416 Semiconductor integrated circuit for wireless communication  
A semiconductor integrated circuit with a PLL (Phase Locked Loop) built therein is used in a semiconductor integrated circuit for wireless communication. The PLL circuit generates an oscillation...
7301404 Method and apparatus for transceiver frequency synthesis  
A method and apparatus for frequency synthesis in a transceiver are based on providing a primary frequency synthesizer configured to synthesize a receiver frequency signal from a receiver reference...
7298227 Local oscillator for multi-band wireless communication  
For use in a multi-band wireless communication system, a local oscillator includes a voltage-controlled oscillator that generates an oscillating signal in response to a control signal. A local...
7298218 Frequency synthesizer architecture  
A frequency synthesizer is provided with a PLL, including a divider by N circuit and a phase generation circuit which is connected to the output of the VCO of the PLL. The phase generation circuit...
7295824 Frequency multiplier pre-stage for fractional-N phase-locked loops  
A WLAN (Wireless Local Area Network) communication device comprising a WLAN frequency synthesizer for generating a synthesizer signal suitable for modulating a transmission signal and/or...
7295821 Multiple base station automatic frequency control architecture in wireless communication system  
An automatic frequency control (AFC) system applies in a mobile station for automatically controlling a local frequency signal to be substantially synchronized with an input signal which is a first...
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