Abstract: An oscillator includes a first output node and a second output node. There is a tank circuit coupled between the first output node and the second output node. There is a first transistor having a first node, a second node coupled to a current source, and a control node coupled to the second output node. There is a second transistor having a first node, a second node coupled to the current source, and a control node coupled to the first output node. There is a first inductor coupled in series between the first node of the first transistor and the first output node. There is a second inductor coupled in series between the first node of the second transistor and the second output node.

Abstract: An oscillator detects a temperature of an atmosphere where a crystal resonator for an oscillation output is placed using a temperature detector to stabilize the temperature by controlling a temperature of a heater based on a temperature detection value. The device includes a buffer amplifier interposed in a signal path of a control signal generated based on the temperature detection value, a heater disposed such that a collector and an emitter position between a power source unit and a ground and constituted of a transistor having a base connected to an output port of the buffer amplifier, and a first differential amplifier disposed to adjust a gain of the buffer amplifier to cancel voltage fluctuation of the power source unit and amplifying a difference between a voltage corresponding to the supply voltage and a preliminarily set voltage to input to a gain adjustment port of the buffer amplifier.

Abstract: A cyclical pulsing oscillator having a pulse repetition rate close to a crystal resonant frequency in an oscillator provides more useful start-up energy to the crystal oscillator circuit and thus provides much faster start-up time. The start-up pulsing oscillator runs for a number of cycles or until the crystal oscillator amplitude as built up to a desired value. The pulsing oscillator may have a repetition rate of from about one-third to about one-half the crystal resonant frequency, thus providing more useful start-up energy to the crystal oscillator circuit.

Abstract: An oscillation circuit includes an oscillating circuit adapted to oscillate a resonator element, a capacitance circuit connected to the oscillating circuit, and capable of correcting an oscillation frequency of the oscillating circuit, a logic circuit to which a signal output from the oscillating circuit is input, and which is capable of correcting a frequency of the signal, and a control circuit adapted to control an operation of the capacitance circuit and an operation of the logic circuit.

Abstract: An oscillation circuit includes an oscillating circuit adapted to oscillate a resonator element having a frequency-temperature characteristic, and a frequency adjustment circuit having a capacitance circuit connected to the oscillating circuit and adapted to adjust an oscillation frequency of the oscillating circuit, and a logic circuit, to which a signal having been output from the oscillating circuit is input, and which adjusts a frequency of the signal, and the frequency adjustment circuit compensates the frequency-temperature characteristic using at least the capacitance circuit in a predetermined temperature range, and compensates the frequency-temperature characteristic using the logic circuit alone outside the predetermined temperature range.

Abstract: A method of calibrating a digitally controlled oscillator (DCO). The method comprises configuring a fine tuning capacitive component of the DCO into a minimum capacitance configuration therefor, configuring a coarse tuning capacitive component of the DCO into a first configuration therefor and determining a resulting first output frequency of the DCO.

Abstract: An atomic oscillator includes a gas cell having alkali metal atoms sealed therein; alight source that irradiates the gas cell with light; and a light detecting unit that detects the quantity of light transmitted through the gas cell. The light source includes an optical oscillation layer having a first reflective layer, an active layer, and a second reflective layer laminated therein in this order, an electrical field absorption layer having a first semiconductor layer, a quantum well layer, and a second semiconductor layer laminated therein in this order, and a heat diffusion layer that is disposed between the optical oscillation layer and the electrical field absorption layer and has a higher thermal conductivity than that of the second reflective layer.

Abstract: An oscillator includes a resonator element; and a semiconductor device including an oscillation circuit which outputs an oscillation signal by oscillating the resonator element, a temperature compensation circuit which compensates for temperature characteristics of a frequency of the oscillation signal, and a first surface in which a terminal that is electrically connected to the resonator element is disposed. The semiconductor device overlaps the resonator element in a planar view. Frequency deviation of the oscillation signal, which is compensated for by the temperature compensation circuit, is greater than or equal to ?150 ppb and smaller than or equal to +150 ppb in a temperature range from ?5° C. to +85° C.

Abstract: A voltage controlled oscillator (VCO) and a method of operating the VCO are disclosed. The VCO includes an inductor device, a capacitor device coupled in parallel with the inductor device through first and second nodes, and a pair of cross-coupled transistors coupled in parallel with the inductor device and the capacitor device through the first and second nodes. At least one of the pair of cross-coupled transistor includes a plurality of sub transistors coupled in parallel. The sub transistors are individually switchable to adjust current drive capability of each of the sub transistors. Each of the sub transistors includes a first gate and a second gate.

Abstract: The present disclosure provides for a system and method for compensating an electronic oscillator for one or more environmental parameters. A method may comprise segmenting test data received from an output signal of the oscillator and generating at least one correction voltage to thereby compensate the oscillator for one or more environmental parameters. A system may comprise at least one multi-function segmented array compensation module configured to receive one or more output signals from an oscillator and generate one or more correction voltages to thereby compensate the oscillator for environmental parameters. The system may also comprise one or more sensors and a user EFC.

Abstract: An oscillator includes a resonator element; an oscillation circuit which outputs an oscillation signal by oscillating the resonator element; and a temperature compensation circuit as a frequency control circuit which controls an oscillation frequency of the oscillation signal, wherein, if a resonance frequency of the resonator element is referred to as Fr (MHz) and an equivalent series capacitance is referred to as C1 (fF), a relationship of C1?0.00279×Fr2?0.05684×Fr+2.69481 is satisfied.

Abstract: The present disclosure is directed to a method of manufacturing an oscillator. The oscillator includes a resonator element, an oscillation circuit which outputs an oscillation signal by oscillating the resonator element, and a temperature compensation circuit which compensates for temperature characteristics of a frequency of the oscillation signal in a desired temperature range. The method includes a first temperature compensation adjustment step in which the frequency is measured at multiple temperatures, and first temperature compensation data is calculated based on a relationship between temperature and the frequency.

Abstract: An atomic oscillator includes an atomic cell in which alkali metal atoms are encapsulated, a light source section configured to receive the supply of a bias and emit light including a resonance light pair for causing the alkali metal atoms to resonate, a temperature adjusting element configured to adjust the temperature of the light source section, a bias detecting section configured to detect information concerning the bias, and a light-source-temperature control section configured to control the temperature adjusting element using the information detected by the bias detecting section.

Abstract: An oven controlled MEMS timing device that includes a very small oscillator that can be heated very rapidly with very low power. The MEMS device includes a rectangular frame, a heated platform positing in the frame, and a pair of support beams that extend from the rectangular frame and hold the platform within a cavity of the frame to thermally isolate the platform. Moreover, the device includes a resonator attached to the platform by a pair of anchor beams, a heater that heats the platform to maintain a target temperature for the resonator and a thermistor that measures a temperature of the platform to provide a control loop for the heater.

Abstract: A circuit includes an oscillator having a driver and a resonator. The driver receives a supply voltage at a supply input and provides a drive output to drive the resonator to generate an oscillator output signal. A power converter receives an input voltage and generates the supply voltage to the supply input of the driver. The power converter varies the supply voltage based on an adjust command supplied to a command input of the power converter. A detector monitors a voltage level of the oscillator output signal. A controller sets the adjust command to the power converter to control the supply voltage to the supply input of the driver such that the voltage level of the oscillator output signal is set at or above a predetermined threshold voltage.

Abstract: An underwater utility line, and associated systems and methods are disclosed. The underwater utility line can include an adjustably buoyant tube. The underwater utility line can also include a transmission line to transfer energy disposed in an interior of the adjustably buoyant tube. The underwater utility line can further include a gas source and a controller to control the gas provided by the gas source to alter the buoyancy of the adjustably buoyant tube.

Abstract: A technique for reducing jitter in an oscillating signal generated by an oscillator circuit includes reducing feedback of gate leakage current while increasing electrostatic discharge protection and reducing regulated power supply requirements of the oscillator circuit, as compared to conventional oscillator circuits. A circuit includes a first integrated circuit terminal and a thick gate native transistor of a first conductivity type having a first gate terminal having a first gate thickness. The first gate terminal is coupled to the first integrated circuit terminal. The thick gate native transistor has a first threshold voltage. The thick gate native transistor is configured as a source follower. The circuit includes a second transistor of the first conductivity type having a second gate terminal with a second gate thickness less than the first gate thickness. The second gate terminal is coupled to a source terminal of the thick gate native transistor.

Abstract: A crystal oscillator is started in a high power mode for a certain period of time to ensure starting oscillation with average grade crystals, then once the certain time period is over the oscillator switches into a low power mode and sustains oscillation with energy pulses triggered by and synchronized with the oscillator output frequency. These energy pulses may be generated on the positive, negative or both positive and negative edges of the clock output waveform.

Abstract: An oscillation circuit includes: an oscillator configured to generate N phase clocks (where N is an integer of 2 or more) including a first phase clock to Nth phase clock whose phases are shifted by 360°/N at regular intervals; a pulse generating part configured to receive a plurality of the N phase clocks and generate a plurality of intermediate pulses each having a duty ratio of 25%; and a clock synthesizing part configured to synthesize the plurality of intermediate pulses to generate a single phase output clock or multi-phase output clocks, the single phase output clock and the multi-phase output clocks having a frequency that is twice an oscillation frequency of the oscillator.

Abstract: An atom cell is provided with an internal space including a space formed of a through hole housing gaseous alkali metal, a space formed of a through hole housing a compound as an alkali metal emission material, and a space formed of a through hole housing liquid or solid alkali metal.