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9041478 Electronic oscillation circuit  
An electronic oscillator circuit has a first oscillator, for supplying a first oscillation signal, a second oscillator, for supplying a second oscillation signal, a first controller for delivering...
9019021 Multi-phase voltage-controlled oscillator  
Embodiments provide a multi-phase voltage controlled oscillator (VCO) that produces a plurality of output signals having a common frequency and different phases. In one embodiment, the VCO may...
9007132 Oscillation signal generator  
An oscillation signal generator includes a quadrature voltage-controlled oscillator (QVCO), a phase corrector and a frequency adjusting circuit. The QVCO provides multiple oscillation signals...
9000849 Continuous phase adjustment based on injection locking  
A phase-modification circuit is described. This phase-modification circuit reduces jitter by injecting a divided reference clock in a phase-locked loop from an auxiliary oscillator and by...
8994465 Phase noise reduction control loop for oscillators using nonlinear resonator operation  
A method for reducing the phase noise of a oscillator includes monitoring a phase slope of a resonator, and controlling the resonator to operate the resonator at a high phase slope condition,...
8988153 Ring oscillator with NMOS or PMOS variation insensitivity  
A low voltage ring oscillator circuit can have a frequency variation that depends on process variations of insulated gate field effect transistors (IGFETs) of a first conductivity type without...
8981854 Clock distributor and electronic apparatus  
A clock distributor includes a first oscillator and a second oscillator, to each of which a signal controlling an oscillation frequency is input and to one of which a clock is input; a wiring...
8975973 Oscillation frequency adjusting apparatus, oscillation frequency adjusting method, and wireless communication apparatus  
A voltage controlled oscillation circuit oscillates at an oscillation frequency corresponding to a control voltage. Injection locked oscillation circuits oscillate at an oscillation frequency...
8975975 Spread spectrum clocking method for wireless mobile platforms  
According to some embodiments, a method and apparatus are provided to vary a clock signal frequency for a first time period between a lower limit of a range of problematic frequencies and a...
8928416 Transceiver, voltage control oscillator thereof and control method thereof  
A transceiver includes a phase lock loop (PLL) and a clock data recovery circuit (CDR). The phase lock loop generates a first level control signal. The clock data recovery circuit, coupled to the...
8922150 Differential serial driver  
A microcontroller chip includes a serial data transmitter having a serial data output pin and an inverter having an input pin and an output pin, the input pin connected to the serial data output...
8912852 Quartz pressure and temperature transducer assembly with dynamic correction  
A quartz transducer having four or more crystal-controlled oscillators intended for measurement of applied pressure and temperature. All four oscillators are controlled by crystal quartz...
8902007 Clock distributor and electronic device  
A clock distributor includes unit circuit parts each including an oscillator, a first element configured to convert output voltage of the oscillator into a current, a second element having a...
8896385 Oscillators having arbitrary frequencies and related systems and methods  
Systems and methods for operating with oscillators configured to produce an oscillating signal having an arbitrary frequency are described. The frequency of the oscillating signal may be shifted...
8854091 Integrated circuit comprising fractional clock multiplication circuitry  
Circuitry capable of performing fractional clock multiplication by using an injection-locked oscillator is described. Some embodiments described herein perform fractional clock multiplication by...
8816778 Clock frequency adjusting method and circuit  
A method for adjusting an oscillator clock frequency, comprising: providing a first oscillator, applying a first setpoint value to the first oscillator, determining a first oscillator frequency...
8816777 Microwave synthesizer  
A microwave synthesizer is disclosed that may generate low phase noise and high frequency resolution microwave signals The microwave synthesizer may include a coarse-tuning loop, the coarse-tuning...
8798198 Calibration systems for wireless electronic devices  
A calibration system may be provided for calibrating wireless communications circuitry in an electronic device during manufacturing. The calibration system may include data acquisition equipment...
8791762 Method and apparatus for managing arbitrary frequencies  
Frequency synthesizers for use with oscillators that generate an arbitrary frequency are described, as well as related devices and methods. Divider information can be generated or otherwise...
8779865 Ultra-compact PLL with wide tuning range and low noise  
A design for an oscillator, and a PLL incorporating such an oscillator, which takes up little physical area but maintains a large tuning range and low phase noise. Two LC-tanks are nested and...
8756451 Frequency synthesis methods and systems  
Multi-tier methods and systems to synthesize a reference frequency, and control one or more tiers in view of multiple prioritized criteria. A first tier of a frequency synthesizer may include a...
8754719 Integrated circuit devices using analog dividers  
A divider for use in an integrated circuit chip, such as a clock generator chip, includes a ramp generator circuit configured to generate a ramp signal and a synchronous detector circuit...
8749313 Correction of low accuracy clock  
An electronic device has two oscillators, for example a first highly accurate crystal oscillator and a second less accurate low power oscillator. In a normal mode of operation, time is counted...
RE44879 Phase locked loop, transceiver device and method for generating an oscillator signal  
A phase locked loop has a controlled oscillator for outputting an oscillator signal depending on a control signal. A comparator generates a comparison result from a comparison between a reference...
8705663 Receiver architecture and methods for demodulating binary phase shift keying signals  
A receiver is described. The receiver includes a first injection-locked oscillator having a first input configured to receive a BPSK signal and a second input configured to receive a first...
8698565 Dynamic voltage-controlled oscillator calibration and selection  
A method and apparatus is disclosed for voltage-controlled oscillator selection in a multi-mode system having multiple voltage-controlled oscillators. Part of oscillator selection is a calibration...
8692626 Oscillation device  
An oscillation device for reducing memory capacity includes a frequency difference detecting unit and a compensation value obtaining unit. When oscillation frequencies of the first and second...
8692623 Relaxation oscillator circuit including two clock generator subcircuits having same configuration operating alternately  
A control circuit controls first and second clock generator subcircuits so that one subcircuit of the first and second clock generator subcircuits operates for a comparison voltage generating...
8686804 Orthogonally referenced integrated ensemble for navigation and timing  
An orthogonally referenced integrated ensemble for navigation and timing includes a dual-polyhedral oscillator array, including an outer sensing array of oscillators and an inner clock array of...
8686806 Highly accurate temperature stable clock based on differential frequency discrimination of oscillators  
An apparatus and a method for compensating for a mismatch in temperature coefficients of two oscillator frequencies to match a desired frequency ratio between the two oscillator frequencies over a...
8670736 Crystal control scheme to improve performance of a receiver  
A circuit includes, in part, a receiver, a received signal strength indicator (RSSI), and an oscillator. The receiver receives an incoming signal and an oscillating signal. The RSSI is responsive...
8659472 Method and apparatus for highly accurate higher frequency signal generation and related level gauge  
An apparatus includes a stable local oscillator, which includes a first control loop. The first control loop includes a first voltage-controlled oscillator configured to generate a first output...
8659364 Oscillator device with crystal resonators  
A value corresponding to a difference value between a value corresponding to a difference between f1 and f1r and a value corresponding to a difference between f2 and f2r is treated as an...
8610511 High-frequency digitally controlled oscillator  
The high-frequency digitally controlled oscillator includes fully digital cells capable of being ported to any CMOS fabrication process. The oscillator has a basic modular architecture comprising...
8598956 System and method for reducing holdover duration  
A device is provided having a local oscillator (LO) configured to generate a first signal comprising at least one of timing information, frequency information, phase information and combinations...
8593232 Multi-band frequency oscillating device  
An oscillating device is provided that has several oscillators. Each oscillator has a capacitive inductive resonant circuit and a flow-through conduction circuit having a negative flow-through...
8564375 Methods and apparatus for self-trim calibration of an oscillator  
In one general aspect, an apparatus can include a reference oscillator counter circuit configured to produce a reference oscillator count value based on a reference oscillator signal, and a target...
8558623 Oscillating circuit with giant magnetoresistance effect junctions  
An oscillator including two groups of elementary junctions having giant magnetoresistance effect traversed by electric currents, the junctions of each of the two groups being in series and...
8552804 Frequency synthesizers with dynamic calibration intervals  
An apparatus includes an adjustable oscillator circuit configured to generate an output signal having a frequency that varies responsive to a frequency control signal and a frequency reference...
8547178 Single-event upset hardened ring oscillator  
A ring oscillator is disclosed. The ring oscillator includes a first tri-path inverter, a second tri-path inverter and a third tri-path inverter. The second tri-path inverter is connected to the...
8542779 Receiver architecture and methods for demodulating binary phase shift keying signals  
A receiver is described. The receiver includes a first injection-locked oscillator having a first input configured to receive a BPSK signal and a second input configured to receive a first...
8536953 Quartz oscillator module  
A quartz oscillator module includes a first quartz oscillator, a second quartz oscillator, a first electronic switch, and a second electronic switch. The first and second quartz oscillators...
8513957 Implementing integral dynamic voltage sensing and trigger  
A method and circuit for implementing dynamic voltage sensing and a trigger circuit, and a design structure on which the subject circuits resides are provided. The voltage sensing circuit includes...
8508308 Automatic frequency calibration of a multi-LCVCO phase locked loop with adaptive thresholds and programmable center control voltage  
Described embodiments provide a method of calibrating, by a calibration engine, a phase-locked loop (PLL) having one or more adjustable oscillators. The method includes entering a calibration mode...
8497740 Reference signal oscillator  
A rubidium oscillator or a cesium oscillator is used as a high stability oscillator, and an OCXO being a metastable oscillator which is inferior in a long-term frequency stability compared with...
8487708 Clock oscillator circuit and semiconductor device  
An object is to provide a method for preventing the occurrence of variations in time resolution by providing a calibration process to a TDC at the time of start up and further preventing the...
8487710 RTWO-based pulse width modulator  
A pulse width modulator based on a pair of rotary traveling wave oscillators. The first oscillator operates freely or as part of a phase-locked loop. The second oscillator operates at the same...
8463205 Transmitting apparatus operative at a plurality of different bands and associated method  
A transmitting apparatus operative at a plurality of different bands includes at least a modulator, an intermediate frequency (IF) filter, and an offset phase-locked-loop (OPLL). Regardless at...
8456245 Two LO and two mixers generating high frequency LO signal  
One embodiment of the present invention relates to a system that provides a high frequency local oscillator (LO) signal. The system comprises a first LO that generates a first frequency LO signal...
8456243 Failsafe oscillator monitor and alarm  
A failsafe oscillator monitor and alarm circuit receives clock pulses from an external oscillator that if a failure thereto occurs, the failsafe oscillator monitor and alarm circuit will notify a...