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Patent Searching and Data


Matches 1 - 50 out of 1,823

Document Document Title
WO/2019/070315A1
A calibration system is provided for an oven controlled MEMS oscillator. The calibration system includes control circuitry that to separately selects predetermined target set-point values and controls a heater inside the oven controlled ...  
WO/2019/066842A1
Methods, systems, and circuitries are provided to generate clock signals of different qualities in a device. A method includes determining whether the device is operating in a mid power mode or a high power mode. In response to determini...  
WO/2019/067814A1
A temperature-compensating clock frequency monitor circuit may be provided to detect a clock pulse frequency in an electronic device that may cause erratic or dangerous operation of the device, as a function of an operating temperature o...  
WO/2019/048736A1
The invention relates to a frequency reference oscillator device and method of providing a frequency reference signal. The oscillator device comprises a first oscillator comprising a first resonator having first long-term stability and a...  
WO/2019/049071A1
A temperature stabilized device with improved response to changes in power supply voltage level, comprises a heater circuit for heating the device assembly and a temperature control circuit in which a heater control signal is adjusted wi...  
WO/2019/048737A1
The invention relates to a temperature-compensated microelectromechanical oscillator and a method of fabricating thereof. The oscillator comprises a resonator element comprising highly doped silicon and an actuator for exciting the reson...  
WO/2019/036338A1
Systems and processes disclosed herein determine the temperature of a crystal, such as a crystal that may be used in a crystal oscillator, using the reference crystal itself. The system can measure the temperature of the crystal without ...  
WO/2019/025447A1
A phase-locked loop circuit comprises an oscillator (308) having a plurality of operating curves and being suitable for generating an output signal (FOSC). In a calibration state the oscillator(308) is trimmed to an operating curve for u...  
WO/2019/020056A1
A method and apparatus for correcting the bandwidth of a filter. The method comprises: maintaining a process corner capacitance value C1 of a capacitor or a process corner resistance value R1 of a resistor in a filter to be unchanged; de...  
WO/2019/008879A1
The purpose of the present invention is to obtain an oscillation signal of high spectral purity. An oscillation device 10 pertaining to an embodiment is equipped with: an oscillator 11 wherein the oscillation frequency cannot be controll...  
WO/2018/113089A1
An oven controlled crystal oscillator device, and a frequency compensation method therefor. The device comprises: an oven controlled slot (22), a microcontroller (23), an oven controlled crystal oscillator (24) arranged in the oven contr...  
WO/2018/080750A1
Techniques for calibrating a crystal oscillator of a wireless device are provided. A method according to these techniques includes operating a transmit path of the wireless device at a first carrier frequency, configuring a receive path ...  
WO/2018/075452A1
A method and system for vibration correction in an oscillator. The method includes sensing vibrations along one or more axes via at least one accelerometer mounted on the oscillator, determining corrective factors based on an acceleratio...  
WO/2018/039538A1
Embodiments of the present disclosure include a microcontroller with a frequency test circuit, a device-under-test (DUT) input, and a calculation engine circuit. The calculation engine circuit is configured to compare a measured frequenc...  
WO/2018/014970A1
Methods and devices for synchronizing a device clock in a wireless network (e.g. a LPWAN) are disclosed. Example methods comprise identifying a device temperature, identifying a clock drift associated with the identified device temperatu...  
WO/2018/013327A1
A voltage regulator includes a band limited reference voltage. The band limited reference voltage is generated from a supply voltage combined with a feedback path to provide a band reject power supply rejection ratio (PSRR). The voltage ...  
WO/2018/004940A1
A packaged VCTCXO may include a crystal oscillator configured to output a signal of a particular frequency and a temperature sensor configured to measure an internal temperature of the crystal oscillator. In addition, the packaged VCTCXO...  
WO/2017/222751A1
Various embodiments of methods and systems for closed loop multimode sleep clock frequency compensation in a portable computing device are disclosed. An exemplary embodiment leverages a modem to determine a frequency shift on a sleep clo...  
WO/2017/151198A1
The present disclosure is directed towards systems and method for actively tuning a phase locked loop based on vibration excitation levels experienced by the phase locked loop. A bandwidth of the phase locked loop can be actively increas...  
WO/2017/151301A1
A method of generating a bandgap voltage in an electronic circuit includes generating a bandgap current. The method further includes operating the electronic circuit using the bandgap voltage and the bandgap current. The operating can be...  
WO/2017/120244A1
A signal generator configured to generate an oscillating signal with a temperature-compensated frequency. The signal generator includes a ring oscillator, and a complementary to absolute temperature (CTAT) current generator configured to...  
WO/2017/081634A1
A method for a resilient signaling of time and for a time synchronization of the users of a distributed network. The invention also comprises an apparatus for implementing such method.  
WO/2017/074704A1
The present invention generally relates to a system and method for high accuracy temperature control of an oven used to operate an electronic device, sensor or resonator ("device") at a fixed temperature. The fixed temperature operation ...  
WO/2017/053163A1
Certain aspects of the present disclosure provide methods and apparatus for temperature-dependent adjustment of a resonant circuit, such as that found in a voltage-controlled oscillator (VCO). Such adjustment may be performed in an effor...  
WO/2017/015834A1
The present invention relates to the technical field of quartz crystal oscillators, and particularly, to a directly-heating oven controlled crystal oscillator. In the present invention, the surface of a wafer is provided with wires, two ...  
WO/2017/003630A1
Methods, systems, and circuits for providing compensation for voltage variation are disclosed. A system includes: a voltage comparator configured to assert a control signal in response to detecting that one or more of power supply voltag...  
WO/2016/206384A1
A crystal oscillator circuit, a crystal oscillator circuit tuning method, and a storage medium, the crystal oscillator circuit tuning method comprising: on the basis of a current digital voltage signal and temperature compensation table,...  
WO/2016/057289A1
Various aspects of this disclosure comprise systems and methods for synchronizing sensor data acquisition and/or output. For example, various aspects of this disclosure provide for achieving a desired level of timing accuracy in a MEMS s...  
WO/2016/039688A1
According to various embodiments, there is provided a method for generating a reference clock signal, the method including discharging a capacitive element to a discharged state, when a reset signal has a predetermined reset state; charg...  
WO/2016/036583A1
In aspects of a low phase noise technique for use with a crystal oscillator, a bias control circuit sets a bias voltage on the gate of a first transistor needed to sink or source an amount of current corresponding to a sensed common mode...  
WO/2016/028690A1
In some examples, compensating for hysteretic characteristics of a crystal oscillator in a timing circuit includes obtaining a plurality of successive temperature measurements. From the plurality of successive temperature measurements, a...  
WO/2015/200274A1
A system may include a sampling circuit, a temperature calibration system, a phase detector, a virtual phase-locked loop, and a sample rate converter. The sampling circuit may be configured to generate a series of digitally-sampled data ...  
WO/2015/193539A1
The present invention relates in general to electronic oscillation generators and to the stabilization of electronic oscillation generators, and especially to temperature- compensated oscillator units used in electronics and telecommunic...  
WO/2015/172555A1
Provided are a frequency control method and circuit for a ring oscillator. The method comprises the following steps: obtaining, by means of a current bias circuit, a current having a positive temperature coefficient; using the current ha...  
WO/2015/151870A1
 Provided is an OCXO having a high degree of stability regarding output frequency. An oscillator (1A) that is an OCXO, wherein crystal-oscillating elements (10, 20), oscillating circuits (1, 2), a temperature detecting unit (53), and a...  
WO/2015/097430A1
A method of calibrating a first oscillator (102) is disclosed. A temperature is measured to obtain a measured temperature value and a determination is made of whether said measured temperature value differs from at least one previously m...  
WO/2015/093940A1
The invention relates to a method for operating a mechanical resonator in an electronic oscillator, comprising determining a state space description of the resonator, in which state variables are the mass, the stiffness or dimensions of ...  
WO/2015/081241A1
A clock oscillator includes a high speed oscillator generating a high speed clock signal and comprising a digital trimming function; a counter receiving said high speed clock signal at a clock input; a time base having a low drift and co...  
WO/2015/074133A1
A digitally compensated phase locked oscillator (DCPLO) is disclosed herein. The DCPLO comprises: a DCPLO input for receiving a reference signal at a known frequency; a DCPLO output for outputting a signal at a desired frequency; a phase...  
WO/2014/191859A3
A thermal oscillator (10) for creating an oscillating heat flux from a stationary spatial thermal gradient between a warm reservoir (20) and a cold reservoir (30) is provided. The thermal oscillator (10) includes a thermal conductor (11)...  
WO/2014/184191A1
The invention relates to a device (110) which comprises a temperature sensor (111) and accesses an external time or frequency reference (121; 130) in order to retime an oscillation frequency of a VCTCXO oscillator (113). The device deter...  
WO/2014/177443A1
The invention relates to a method for controlling a piezoelectric device comprising a piezoelectric element (1) attached to a substrate (2), the substrate (2) and the piezoelectric element (1) being made of materials having different the...  
WO/2014/137666A1
A system includes first circuitry including first elements for operating in a low power mode; second circuitry including second elements for operating in a high-temperature mode; and one or more switching elements for selecting between t...  
WO/2014/095409A1
The invention relates to a method for stabilizing the clock frequency (f) of a microcontroller associated with a field device in automation engineering, wherein the field device is subjected to different process conditions depending on t...  
WO/2014/073503A1
[Problem] To provide a reference signal generation device that is able to continue outputting an appropriate reference signal by making a correction with consideration of humidity even when an appropriate reference signal cannot be obtai...  
WO/2014/045929A1
[Problem] To realize, at an extremely low cost, a standard signal generation device capable of performing self-running control even when an appropriate reference signal cannot be received. [Solution] The standard signal generation device...  
WO/2014/043531A1
A voltage controlled oscillator (VCO) core for cancelling a supply noise is described. The VCO core includes an input node that receives the supply noise. The VCO core also includes a noise path coupled to the input node. The VCO core ad...  
WO/2014/043455A1
A communications device includes a housing, an antenna carried by the housing, an oscillator carried by the housing to generate a reference signal, and an RF receiver carried by the housing, and coupled to the antenna and the oscillator,...  
WO/2014/029718A1
System for producing a system clock signal comprising a local oscillator configured to generate a first clock signal; a temperature detector configured to detect a temperature change above a critical value in an area including the local ...  
WO/2014/025575A1
A substantially temperature-independent LC-based oscillator uses bias control techniques. Temperature independence may be achieved by controlling the harmonic frequency content of the output of the oscillator by controlling the amplitude...  

Matches 1 - 50 out of 1,823