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Matches 101 - 150 out of 1,437

Document Document Title
WO/2012/099793A1
New and highly stable oscillators are disclosed. Such an oscillator may include a first capacitor electrically connected to a first charging switch and a first discharging switch, a second capacitor electrically connected to a second cha...  
WO/2012/049187A1
Device for generation of an output signal having a desired frequency, the device comprising: a micro-oven containing a MEMS oscillator, a temperature control system for maintaining the MEMS oscillator at a desired operation temperature i...  
WO/2012/048034A2
A resonator of a VCO includes a fine tuning main varactor circuit, an auxiliary varactor circuit, and a coarse tuning capacitor bank circuit coupled in parallel with an inductance. The main varactor circuit includes a plurality of circui...  
WO/2012/041413A1
An integrated circuit device for compensating frequency drift of a controllable oscillator is described. The integrated circuit device includes at least one compensation module including: an input for receiving at least an indication of ...  
WO/2012/017572A1
A MEMS oscillator is provided with: a feedback oscillation circuit that contains a MEMS resonator and an amplifier; and an automatic gain controller that receives output from the amplifier and controls the amplifier gain on the basis of ...  
WO/2012/017366A1
A resonator-controlled oscillator arrangement comprises a resonator-controlled oscillator of which the operating frequency is adjustable and a control circuit for setting the operating frequency of the oscillator. The control circuit is ...  
WO/2012/009429A1
Methods and apparatus for calibration and temperature compensation of oscillators having mechanical resonators are described. The method(s) may involve measuring the frequency of the oscillator at multiple discrete temperatures and adjus...  
WO/2011/108186A1
Disclosed is a PLL circuit which is provided with: a frequency dividing means (11), which divides the frequency of the output of the PLL circuit; a phase detector (12), which detects the phase difference between a reference clock signal ...  
WO/2011/101981A1
A frequency voltage converter circuit (13) is configured from a switching unit, which is further configured from switches (SW1, SW2); electrostatic capacitance elements (C, C10-C13); and switches (CSW0-CSW3). The electrostatic capacitanc...  
WO/2011/093708A1
An electrothermal frequency-locked loop (EFLL) circuit is described. This EFLL circuit includes an oscillator in a feedback loop. A drive circuit in the EFLL circuit generates a first signal having a fundamental frequency, and an electro...  
WO/2011/087762A1
A system, method, and apparatus for stabilizing interactions between an electrical generator and a nonlinear load are described. One illustrative embodiment includes an impedance element that is coupled to an output of the generator and ...  
WO/2011/086976A1
A reference frequency generator device (10) comprises a synchronization circuit (30); a temperature sensor unit (17); and a control unit (11). The synchronization circuit controls the reference frequency signals that a voltage control os...  
WO/2011/079253A1
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 to remove its arbitrary nature by applicat...  
WO/2011/063360A1
A phase locked loop apparatus includes an oscillator, a variable capacitance device, a selectable capacitance device, and a capacitance controller that is configured to provide a control signal to the selectable capacitance device. The s...  
WO/2011/053634A1
Techniques for synthesizing a signal having a desired frequency from an oscillation signal. In an aspect, a reference signal having a known frequency may be periodically used to determine a ratio between the desired frequency and the fre...  
WO/2011/016732A1
A method is disclosed for improving the effective frequency stability of a frequency reference source, wherein an algorithm utilizing parameters determined from frequency and temperature sensing measurements of the source or a similar so...  
WO/2010/143363A1
Disclosed are a resonator and an oscillator using the same, capable of broadly and finely correcting the resonant frequency of the vibrating element. The resonator comprises a vibrating element (101), electrodes (4, 5) arranged with a cl...  
WO/2010/125388A1
A communications device, such as a GNSS receiver comprises an oscillator, having a temperature-dependent frequency characteristic, for generating signals at a nominal frequency; receiver circuitry, for receiving transmitted wireless sign...  
WO/2010/117466A1
A fractional-N frequency synthesizer having reduced fractional switching noise and spurious signals is provided. The synthesizer includes a voltage controlled oscillator for providing an output signal. A fractional-N divider is responsiv...  
WO/2010/108032A1
An integrated circuit incorporating a bias circuit for a current-controlled oscillator (ICO) with improved power supply rejection ratio (PSRR) is described. The bias circuit for the ICO includes two error amplifiers. The first error ampl...  
WO/2010/106512A1
A voltage reference connects to a voltage-to-current converter to generate a reference current dependent on the reference voltage. Outputs of a toggle-type flip flop connect to switching transistors controlling the reference current char...  
WO/2010/104891A1
Techniques for setting a fine tuning input signal Vtune for a voltage-controlled oscillator (VCO) in a coarse tuning mode of the VCO. In an exemplary embodiment, the fine tuning input signal during coarse tuning mode is made temperature-...  
WO/2010/043932A1
An integrated circuit comprises a digital phase-locked loop (200) for a wireless communications unit. The digital phase-locked loop (200) comprises a voltage controlled oscillator (220) and a digital tuning subsystem (240). An input of t...  
WO/2010/039946A2
An oscillator assembly includes a substrate having a top surface, a bottom surface, and a plurality of side surfaces. At least one of the side surfaces has at least one castellation which is covered with conductive material and includes ...  
WO/2010/036376A1
Techniques of compensating frequency in an output in reference to a reference frequency signal are disclosed. The reference frequency signal may be from a crystal oscillator or other oscillators. Due to the changes of the temperature, th...  
WO/2010/033079A1
A relaxation oscillator and a method for offset cancellation in a relaxation oscillator. The relaxation oscillator comprises two comparator units, each comparator unit comprising a comparator element and a memory element; and a switch co...  
WO/2010/023883A1
Provided is a synthesizer (1) including: a synthesizer unit (2) which outputs an oscillation signal based on a reference oscillation signal; a temperature detection unit (3) which detects the temperature; a time variation detection unit ...  
WO/2010/018111A1
The invention relates to a precise, low-consumption, and low-frequency oscillator that comprises at least, in combination, a low-consumption, low-frequency oscillator A operating at a frequency FA, a temperature-compensated oscillator TC...  
WO/2010/002300A1
The present invention is directed to a crystal oscillator package comprising a current transporting structure comprising an inner conductor arrangement enclosed by an insulating material, a crystal oscillator configured to generate a sig...  
WO/2009/156793A1
A voltage controlled oscillator (VCO) circuit (200) comprises a VCO resonator circuit (230) having a first plurality of varactors (232, 234) for varying a frequency of the VCO resonator circuit (230), the VCO resonator circuit being symm...  
WO/2009/147474A2
Method of calibrating a first clock signal using a second clock signal and calibration periods may include generating incremented counter values at a counter responsive to edges of the second clock signal. An initial incremented counter ...  
WO/2009/134372A2
Timing oscillators as well as related methods and devices are described. A timing oscillator may include a mechanical resonating structure with major elements and minor elements coupled to the major element. The timing oscillator can gen...  
WO/2009/132152A2
Techniques for compensating for the effects of temperature change on voltage controlled oscillator (VCO) frequency are disclosed. In an embodiment, an auxiliary varactor is coupled to an LC tank of the VCO. The auxiliary varactor has a c...  
WO/2009/116262A1
A synthesizer (119) includes: a synthesizer unit (101) which generates a local oscillation signal (SL1) based on a reference oscillation signal (SREF1) outputted from a reference oscillator (102) having an MEMS transducer (114); a freque...  
WO/2009/112427A1
The invention relates to a device for compensating for the frequency of a resonator (27), which comprises: a temperature sensor (21) for said resonator (27); a sequencer (22) determining a second compensation signal on the basis of the t...  
WO/2009/108324A2
An oscillator assembly including an oscillator seated on a pad of thermally conductive material formed on the surface of a printed circuit board and covered by a lid defining an oven for the oscillator. In one embodiment, a plurality of ...  
WO/2009/101792A1
Provided is a synthesizer (1) including: a synthesizer unit (16) which generates an oscillation signal based on a reference oscillation signal outputted from a MEMS oscillator (14) and inputs the oscillation signal to a frequency convert...  
WO/2009/097047A1
An integrated circuit includes a delay lock loop (DLL) circuit that generates incremental delay line signals and a delay line output signal based on a received clock signal. A pulse-width modulation (PWM) control module generates a PWM c...  
WO/2009/063612A1
Phase noise deterioration in a synthesizer can be suppressed by providing an oscillator (5) for outputting an oscillation signal based on an output signal from a comparator (4), a frequency divider (6) for dividing an output signal from ...  
WO/2009/055349A1
A system is provided for the regulation of temperature of a crystal oscillator, that system having a thermally conductive support disposed upon a substrate and upon which is disposed the crystal oscillator, an array of thermal vias dispo...  
WO/2009/052289A1
A voltage controlled oscillator (VCO) is provided that includes an output buffer having a first buffer stage including a first transistor and a second buffer stage including a second transistor. The first and second transistors are conne...  
WO/2009/029226A1
An ovenized oscillator package including at least a heater and a crystal package mounted on opposite sides of a circuit board. Vias extend through the body of the circuit board to transfer heat from the heater to the crystal package. Lay...  
WO/2009/029209A1
An ovenized oscillator package including a ball grid array substrate seated on a circuit board, a heater and a temperature sensor mounted on the ball grid array substrate, and a crystal package mounted to the ball grid array substrate an...  
WO/2009/016817A1
In an oscillator (1), unit of frequency adjustment of a synthesizer section (4) by a control section (6) is smaller than the frequency fluctuation follow-up capability of a demodulating section (8) connected to an output side of a freque...  
WO/2009/013301A1
An electronic device, comprises a digital controlled oscillator including a programmable current source, a first variable capacitor and a second variable capacitor. A comparator is provided for comparing the voltage drop across the varia...  
WO/2008/153645A2
A system is provided with clock skew measurement and correction technology. A first circuit or memory controller 4 includes measuring circuits to measure relative timing or phase offsets of multiple clock signals of a second circuit or m...  
WO/2008/151435A1
An improved bias generator incorporates a reference voltage and/or a reference current into the generation of bias voltages. In some cases, the output of a biased delay element has a constant voltage swing. A delay line of such constant ...  
WO/2008/125646A1
A method for temperature compensation of a time basis, driven by a quartz crystal oscillator, comprises a second oscillator having a linear frequency dependency on temperature. The method counts the pulses (65) of the quartz crystal osci...  
WO/2008/112182A1
Crystal oscillator control and calibration is disclosed. Temperature and frequency control circuits included on a printed circuit board (PCB) comprising a crystal oscillator are used to determine, for each of a plurality of set points in...  
WO/2008/056104A1
An active radio frequency tag transponder having active temperature compensation of frequency generating means (114), which active radio frequency tag transponder comprises: (i) the frequency generating means (114); (ii) transceiver mean...  

Matches 101 - 150 out of 1,437