Oscillators inventions 11/08

20080290953 - System and method for generating lo frequencies with phase locking in 2 steps: System and method for generating multiple local oscillator signals comprising a first-stage phase-locked loop (PLL) having an input to receive a first reference signal input and having an output to transmit a second reference signal, wherein the second reference signal is an integer or fractional multiple of the first reference... Agent: Slater & Matsil LLP

20080290954 - Fractional-n phase locked loop: An apparatus and method is disclosed to substantially reduce phase noise introduced in fractional-N phase-locked loop (PLL) through feedback modulation. A fractional frequency divider is introduced in the feedback path of the PLL to generate a true fractional division factor with finite fractional steps to increase the resolution of the... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20080290955 - Low cost and low variation oscillator: An oscillator circuit for use in integrated circuits. The oscillator circuit includes a delay generation circuit having a current mirror with at least a first current mirror branch and a second current mirror branch, a current source coupled to the first current mirror branch, a capacitive element coupled to the... Agent: Schwegman, Lundberg & Woessner / Atmel

20080290956 - Surface-mount type crystal oscillator: A surface-mount type crystal oscillator includes a container body having a recess and made up of laminated ceramic, a crystal blank accommodated in the container body, and an IC chip made up of a semiconductor substrate in which at least an oscillation circuit using the crystal blank is formed. The... Agent: Cantor Colburn, LLP

20080290957 - Receiver with colpitts differential oscillator, colpitts quadrature oscillator, and common-gate low noise amplifier: Embodiments of the present invention include a common-gate amplifier having an input terminal and an output terminal, a transistor having a source, a drain, and a gate, four inductors, and two capacitors, and a negative amplification circuitry. The negative amplification circuitry has an input terminal to receive an RF signal.... Agent: Blakely Sokoloff Taylor & Zafman LLP

20080290958 - Resonator with adjustable capacitance for medical device: Systems and methods for a resonator with an adjustable capacitance for a medical device. In one embodiment, a resonator system includes a resonator device with an LC resonator circuit that has an adjustable capacitance, an inductor coil in series with the adjustable capacitance, and an adjustable capacitance control that can... Agent: Brooks & Cameron, PLLC

20080284531 - Fractional-n synthesized chirp generator: A fractional-N synthesized chirp generator includes a fractional-N synthesizer and a digital ramp synthesizer. The fractional-N synthesizer has a frequency synthesizer and a sigma-delta modulator module. The fractional-N synthesizer is configured to receive a reference frequency input signal and a frequency control value. The fractional-N synthesizer is configured to transform... Agent: Mcdermott Will & Emery LLP

20080284530 - Phase noise minimized phase/frequency-locked voltage-controlled oscillator circuit: A phase noise minimization circuit is disclosed, to be used in a voltage-controlled oscillator (VCO) circuit embedded in a feedback system. The phase noise minimization circuit includes a noise power meter to analyze the control voltage fed into the VCO by the feedback system and determine its voltage noise power.... Agent: Carrie A. Boone, P.C.

20080284523 - Oscillator device, optical deflector and image forming apparatus using the optical deflector: An oscillator device includes an oscillation system having an oscillator and an elastic supporting member, a detecting member for detecting oscillation amplitude of the oscillator, a driving member for driving the oscillator, and a control unit for generating a driving signal for driving the oscillator and for supplying the driving... Agent: Fitzpatrick Cella Harper & Scinto

20080284524 - Phase locked loop circuit having regulator: Embodiments of present invention provide a circuit including a voltage regulator, a phase frequency detector, a charge pump, a low pass filter a control-voltage generating circuit and a voltage controlled oscillator. In a first mode of operation the voltage controlled oscillator produces an output clock in accordance with a control... Agent: SprinkleIPLaw Group

20080284525 - Noise canceling technique for frequency synthesizer: A frequency synthesizer is disclosed. According to one embodiment, the frequency synthesizer includes an input terminal and an output terminal, a loop filter, a digital phase detector, and an analog phase detector. The digital phase detector includes a first input coupled to the input terminal, a second input coupled to... Agent: K&l Gates LLP

20080284526 - Tuning circuit and method: A tuning circuit and a method for setting its tuning voltage. The tuning circuit has a phase frequency detector coupled to a loop filter which is coupled to a voltage controlled oscillator. An output terminal of the voltage controlled oscillator is coupled to an input terminal of the phase frequency... Agent: Mr. Jerry Chruma Semiconductor Components Industries, L.L.C.

20080284527 - Phase locked loop and method for operating the same: A phase locked loop can reduce a locking time, thereby efficiently reducing power in a locking operation. The phase locked loop includes a phase detector, a control voltage generator, a voltage controlled oscillator and a start-up driver. The phase detector detects a phase difference between a reference clock and a... Agent: Blakely Sokoloff Taylor & Zafman LLP

20080284528 - Resonator, oscillator, and communication apparatus: Disclosed is a resonator including a plurality of resonator elements each including at least oscillation parts and lower electrodes with an intervening space therebetween, in which the plurality of resonator elements are disposed in a closed system and the oscillation parts of the plurality of resonator elements are continuously formed... Agent: Sonnenschein Nath & Rosenthal LLP

20080284529 - Method and apparatus of a ring oscillator for phase locked loop (pll): The present invention relates to a ring oscillator including a delay stage, the delay stage includes a differential pair of input transistor, a variable resistive load coupled to the transistor, a differential output between the variable resistive load and the corresponding input transistor, a variable current source coupled to the... Agent: Texas Instruments Incorporated

20080284532 - Voltage- and temperature-compensated rc oscillator circuit: An integrated temperature-compensated RC oscillator circuit includes an inverter having an input and an output. An RC network is coupled between the inverter and a pair of comparators. A first comparator has an inverting input coupled to a first reference voltage, a non-inverting input coupled to the RC network, and... Agent: Lewis And Roca LLP

20080284533 - Electrical oscillator circuit and an integrated circuit: An electrical oscillator circuit comprising: a resonator comprised in the first subcircuit; and an active device comprised in the second subcircuit connected to energize the resonator to provide an oscillating electrical signal transmitted as a differential signal via electrical conductors to the second subcircuit. The oscillator is characterized in that... Agent: Ericsson Inc.

20080284534 - Oscillator: An oscillator is provided that includes a plurality of excitation units for providing an excitation signal and a tank as an oscillation generating unit for generating an oscillation signal in response to the excitation signal, whereby the tank has terminals for providing the oscillator signal, whereby each excitation unit has... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20080284535 - Two-level mounting board and crystal oscillator using the same: The present invention relates to a two-level mounting board in which a second substrate is supported horizontally by a metal pin above a first substrate having a mounting electrode on an outer base surface, the free, lower end of the metal pin is inserted in a hole provided in the... Agent: Edwards Angell Palmer & Dodge LLP

20080278248 - Pll circuit: A PLL circuit is disclosed that comprises a controlling unit that switches at a predetermined timing to enable/disable the phase difference signal supplied from the phase comparator to the low pass filter; and a resistor element that is disposed between a predetermined potential and a signal line for supplying the... Agent: SocalIPLaw Group LLP

20080278243 - Edge alignment for frequency synthesizers: A frequency synthesizer (50, 70) including an edge-detection circuit (51, 60) for disabling elements of the frequency synthesizer (50, 70) prior to start-up. The edge-detection circuit detects a transition edge of a reference-clock signal (ref_clk) of the frequency synthesizer (50, 70) and enables elements of the frequency synthesizer (50, 70)... Agent: The Mueller Law Office, P.C.

20080278244 - Frequency calibration for frequency synthesizers: A calibration circuit (17) for calibrating a frequency synthesizer (10) having a voltage-controlled oscillator (VCO) (15) with a plurality of switched-capacitor arrays (CA1-CAn). The calibration circuit (17) counts a predetermined number of periods of the reference-clock signal (ref_clk) and divide-clock signal (div_clk) of the frequency synthesizer using a fast clock... Agent: The Mueller Law Office, P.C.

20080278245 - Wireless communication semiconductor integrated circuit device and mobile communication system: An RF IC in which a PLL circuit including a loop filter is incorporated into a semiconductor chip is achieved without increasing power consumption or chip size. The RF IC includes a VCO capable of switching oscillation frequency bands, a variable frequency divider, a phase comparator, and a loop filter,... Agent: Mattingly, Stanger, Malur & Brundidge, P.C.

20080278246 - Memory controller: A memory controller includes a ring oscillator to generate and to output at least one oscillation clock, an oscillation counter to count the output oscillation clocks, a sampler to receive the reference clock so as to sample a number of the counted oscillation clocks during a period of the reference... Agent: Stein, Mcewen & Bui, LLP

20080278247 - Calibration of voltage controlled oscillators: A calibration circuit (20, 50) and method (60) for calibrating the bias current of a VCO (10, 40) to minimize phase noise. The calibration circuit (20, 50) monitors the average voltage at the common-mode node of the VCO (10, 40) while varying the bias current over a predetermined range. The... Agent: The Mueller Law Office, P.C.

20080278249 - Lc-type vco: Disclosed herein are embodiments of an LC-type VCO with multiple operational frequency bands having reasonably similar frequency vs. control signal slopes.... Agent: Intel Corporation C/o Intellevate, LLC

20080278250 - System and method for increasing frequency tuning range: System and method for increasing the frequency tuning range of a RF/microwave LC oscillator. An electronic communications device includes a controller to regulate the operation of the electronic communications device, a modem coupled to the controller, a radio frequency unit coupled to the controller and to the modem, an oscillator... Agent: Texas Instruments Incorporated

20080278251 - Noise removal circuit: A noise removal circuit. The noise removal circuit comprises a crystal oscillator and a level decision module. The crystal oscillator generates an oscillating signal and an output clock signal. The level decision module detects the signal level of the oscillating signal and outputs the output clock signal when the signal... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20080278252 - Calibration of voltage controlled oscillators: A calibration circuit (20, 50) and method (60) for calibrating the bias current of a VCO (10, 40) to minimize phase noise. The calibration circuit (20, 50) monitors the average voltage at the common-mode node of the VCO (10, 40) while varying the bias current over a predetermined range. The... Agent: The Mueller Law Office, P.C.

20080272850 - Lock detector and optical phase locked-loop system: A lock detection apparatus detecting lock of an optical phase-locked loop apparatus including a first phase detector comparing phases of an input light signal and a beat light signal to output a first phase comparison signal, a loop filter forming the first phase comparison signal, and an optical voltage controlled... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080272851 - Lc voltage controlled oscillator with tunable capacitance unit: A tunable capacitance unit coupled between a pair of circuit nodes. The tunable capacitance unit comprises a tuning input supplying a tuning voltage, and first and second tuning capacitance units. Each of the tuning capacitance units comprises a pair of accumulation-mode MOS varactors with source/drains thereof coupled to the tuning... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20080272852 - Low-voltage mems oscillator: An electronic device for generating an electric oscillating signal is described based on a micro-electromechanical system (MEMS). The electronic device typically comprises a substrate (104) a moveable element (102) which is moveable with respect to the substrate (104) and an actuating means and a sensor. The actuating means is used... Agent: Nxp, B.v. Nxp Intellectual Property Department