Oscillators inventions 03/07

20070069823 - Semiconductor integrated circuit: During a period of preparation for actual operation, a reference clock is supplied to both a comparison clock input portion and a feedback clock input portion of a phase comparator while a feedback loop of a PLL (phase-locked loop) is interrupted, and a delay of a reset signal within the... Agent: Mcdermott Will & Emery LLP

20070069824 - 3d mmic vco and methods of making the same: A three dimensional (3D) microwave monolithic integrated circuit (MMIC) multi-push voltage controlled oscillator (VCO) and methods of making the same is provided. The 3D MMIC multi-push oscillator includes a plurality of matching frequency oscillators coupled to a phasing ring in substantially equidistantly spaced apart locations. A combined VCO output signal... Agent: Tarolli, Sundheim, Covell & Tummino L.L.P.

20070069826 - Crystal clock generator operating at third overtone of crystal's fundamental frequency: A crystal oscillator operates at the third overtone of the crystal's fundamental frequency. A value of a shunt resistor between the two phase-shift leg nodes is chosen so that the absolute value of the product gm×(Xc1)×(Xc2) is greater than the effective reactance of the crystal, where gm is the gain... Agent: Stuart T Auvinen

20070069825 - Multi mode clock generator: In some embodiments, a clock generator is provided that provides a generator clock. The clock generator comprises a first clock source to provide a first clock and a second clock source to provide a second clock whose frequency at least indirectly tracks a supply to a clock distribution network. The... Agent: Blakely Sokoloff Taylor & Zafman

20070069827 - Auto-calibrated time base apparatus, systems, and methods: Apparatus, systems, methods, and articles may divide a frequency associated with an output of an oscillator formed in a semiconductor substrate using a programmable fractional-N divider module (PFNDM) coupled to the oscillator. A calibration module may be coupled to the PFNDM to select the division ratio to yield a first... Agent: Schwegman, Lundberg, Woessner & Kluth, P.A.

20070069828 - Supply independent schmitt trigger rc oscillator: Embodiments of the present invention provide an oscillator circuit having a steady output frequency that is independent of the supplied voltage. This oscillator includes a Schmitt trigger circuit which may be implemented within an integrated circuit of a wireless terminal or other like portable electronic device. The Schmitt trigger circuit... Agent: Garlick Harrison & Markison

20070069829 - Reducing the settling time of a crystal oscillator: A method and system for initiating the oscillation of a crystal that controls a crystal oscillator by applying an initiating pulse to said crystal. The initiating pulse having a pulse width less than one half the periodicity of said crystal.... Agent: Marger Johnson & Mccollom, P.C.

20070069831 - Voltage controlled oscillator circuitry and methods: Voltage controlled oscillator (“VCO”) circuitry includes LC tank or ring VCO circuitry and frequency divider circuitry that divides the frequency output by the oscillator circuitry by a selectable integer factor that is at least 2 in the case of a ring oscillator or at least 4 in the case of... Agent: Fish & NeaveIPGroup Ropes & Gray LLP

20070069830 - Voltage-controlled oscillators (vco): An oscillation circuit and the method for operating the same. The circuit includes (a) an LC oscillator including an inductor and a variable capacitor; (b) first and second differentially-coupled transistors (i) electrically coupled to the LC oscillator and (ii) configured to provide negative resistance to the LC oscillator; and (c)... Agent: Schmeiser, Olsen & Watts

20070063775 - Low frequency clock generation: A first and a second resonator are fabricated monolithically adjacent to one another. The first resonator is the reference resonator. The resonant frequency of the second resonator is offset by a difference frequency Fo from the first resonator. Each resonator is included within an oscillator. A mixer receives the output... Agent: Avago Technologies, Ltd.

20070063776 - Semiconductor integrated circuit with clock generator: A semiconductor integrated circuit is provided with an external interface circuit, which includes a clock generation circuit for generating a synchronous clock signal to establish synchronization between data input and output through input and output of a data string sectioned at fixed intervals. The clock generation circuit includes a self-excited... Agent: Miles & Stockbridge PC

20070063777 - Electrostrictive devices: A radio frequency (RF) device includes first and second electrodes and a polar dielectric made from a material having electrostrictive properties between the first and second electrodes. The polar dielectric and the first and second electrodes collectively form an active device having an operational frequency band. The RF device also... Agent: Joseph M. Sauer, Esq. Jones Day

20070063778 - Crystal oscillation circuit: A crystal oscillation circuit can correctly suppress the resonance of a B mode, thereby correctly excite the resonance of a C mode. Since the crystal oscillation circuit uses a quartz oscillator of an SC cut or an IC cut, the B mode (unnecessary mode) frequency is close to the C... Agent: Schwegman, Lundberg, Woessner & Kluth, P.A.

20070063779 - Clock signal generating and distributing apparatus: LC resonant voltage control oscillators are adopted as voltage control oscillators for the purpose of providing a clock generating and distributing apparatus that can generate and distribute a clock signal of high precision even in a high-frequency region of several giga hertz or higher, and of providing a distributive VCO-type... Agent: Arent Fox PLLC

20070063780 - Oscillation detection: The invention relates to oscillation detection and, more particularly, concerns a method and apparatus for identifying oscillation in a signal due to feedback, permitting appropriate action to be taken to suppress the oscillation. The method involves using an FFT device or similar to convert a signal at each of a... Agent: Knoble, Yoshida & Dunleavy

20070063781 - Voltage controlled oscillator with amplitude control: A voltage controlled oscillator device with amplitude control is provided. A voltage controlled oscillator (VCO) (101) receives an input current. An error amplifier (117) compares an amplitude of oscillation (113) of the input current to a reference voltage (115) to provide a difference, and outputs a shunting current responsive to... Agent: Posz Law Group, PLC

20070057734 - Oscillatory circuit having two oscillators: An oscillatory circuit. The oscillatory circuit includes a first oscillator, a second oscillator, and a mixer circuit. The first oscillator is configured to generate a first oscillating signal at a first frequency and has a first frequency temperature coefficient. The second oscillator is configured to generate a second oscillating signal... Agent: Agilent Technologies Inc.

20070057736 - Feedback system incorporating slow digital switching for glitch-free state changes: A feedback system such as a phase locked loop (PLL) includes a second feedback loop which responds when a VCO control voltage is near either end of its range, by slowly adjusting additional tuning elements which control the VCO frequency. The second feedback loop is arranged to cause a slow... Agent: Zagorin O'brien Graham LLP

20070057735 - Voltage-controlled oscillator for low-voltage, wide frequency range operation: In one embodiment, an apparatus comprises a voltage-controlled oscillator (VCO) that comprises a circuit coupled to receive an input control voltage to the VCO and configured to generate a second voltage responsive to the input control voltage, a summator coupled to receive the input control voltage and the second voltage,... Agent: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.

20070057737 - Compensation for modulation distortion: A modulation distortion compensation system for a phase locked loop 109 includes a compensation function (115) that is arranged to be coupled to a tuning voltage signal (117) corresponding to a tuning voltage from the phase locked loop and is configured to select a filter response from a plurality of... Agent: Law Office Of Charles W. Bethards, LLP

20070057738 - Oscillator device and transmission and reception device: An oscillator device and a transmission and reception device that are usable for implementing high output and wide-band modulation and that can reduce the manufacturing cost. An oscillation circuit and a frequency control circuit including microstrip lines are formed on an oscillation circuit substrate. A TM010 mode resonator including resonator... Agent: Dickstein Shapiro LLP

20070057739 - Capacitor array segmentation: In one embodiment, the present invention includes a capacitor array that may provide a selected capacitance to a digitally controlled crystal oscillator (DCXO). The array may include multiple sections each having at least one array portion, where each section is to receive different significant portions of a digital control value.... Agent: Trop Pruner & Hu, PC

20070057740 - Quadrature voltage controlled oscillator and wireless transceiver including the same: A quadrature voltage-controlled oscillator includes an oscillation module that provides a first signal and a second signal having predetermined frequencies, and a coupling module that couples the first signal and the second signal in a manner such that the second signal has a quadrature phase difference with respect to the... Agent: Sughrue Mion, PLLC

20070057741 - Method and apparatus for effecting high-frequency amplification or oscillation: An apparatus includes a distributed resonant tunneling section with a plurality of inductive portions that are coupled in series with each other between first and second nodes, such that a respective further node is present between each adjacent pair of the inductive portions. The distributed resonant tunneling section also has... Agent: Baker Botts LLP

20070057742 - Constant temperature type crystal oscillator for high stability: A constant temperature oscillator which comprises: a crystal oscillator that is provided upright on a circuit board, and which comprises a plurality of lead wires extending out from a bottom face of an oscillator container in which a crystal piece is hermetically sealed; an oscillation element arranged on the circuit... Agent: Edwards & Angell, LLP

20070057743 - Analog varactor: An oscillator includes a plurality of varactor cells to receive a control signal to control a frequency of the oscillator. Each of the varactor cells includes a switch that includes a first terninal to receive the control signal and a second terminal such that the switch operates to control a... Agent: Trop Pruner & Hu, PC

20070057744 - Circuit arrangement: A circuit arrangement having a plurality of variable capacitance elements such as varactors is described, the varactors having associated electronic control means which controls the capacitance of the variable capacitance elements over a control range. The control range is such that for any particular variable capacitance element a complete variation... Agent: Intel/blakely

20070052483 - Oscillator: An oscillator includes a first oscillator ring with a number of cascaded inverting delay stages and a second oscillator ring with a number of cascaded inverting delay stages. The ring oscillator also includes a number of inverter pairs which each consists of a first inverter and a second inverter, an... Agent: Texas Instruments Incorporated

20070052484 - Self oscillation system capable of eliminating interference: A self oscillation system capable of eliminating interference is provided. The self oscillation system comprises a plurality of channel oscillation circuits and a plurality of eliminators. The plurality of channel oscillation circuits generates a plurality of channel oscillation signals according to a plurality of channel input signals. The plurality of... Agent: Birch Stewart Kolasch & Birch

20070052488 - Communication semiconductor integrated circuit device and a wireless communication system: In a communication semiconductor integrated circuit device, an oscillator (VCO 10) of a PLL circuit can operate in a plurality of frequency bands. With a control voltage (Vc) of the oscillator fixed to a predetermined value (VDC), an oscillation frequency of the oscillator is measured for each band to be... Agent: Mattingly, Stanger, Malur & Brundidge, P.c.

20070052487 - Integrated circuit device: An integrated circuit device comprises internally on-chip an oscillator with a signal output. The device has a reference clock input, a first counter with a count input, a control input and a counter output, a second counter with a count input, a control input and an overflow indication output, and... Agent: Texas Instruments Incorporated

20070052485 - Methods and apparatuses for testing a voltage-controlled oscillator (vco) to verify operation across supply voltage and/or temperature: Methods and apparatuses for testing a calibrated VCO to determine whether the VCO has adequate fine frequency tuning capability. A range of coarse frequency tuning calibration settings are determined from coarse frequency tuning calibration settings obtained during a coarse frequency tuning calibration process. A determination is then made as to... Agent: Avago Technologies, Ltd.

20070052486 - Self-adjusting clock generator with stable frequency output: A self-adjusting clock generator is disclosed. The self-adjusting clock generator comprises a voltage control oscillator for generating a frequency output, a frequency to voltage converter for converting the frequency output into a voltage output, and a comparator for comparing the voltage output with a reference voltage in order to produce... Agent: Martine Penilla & Gencarella, LLP

20070052489 - Phase locked loop system having locking and tracking modes of operation: An embodiment pertains to a phase locked loop (PLL) circuit. The PLL includes a voltage controlled oscillator which outputs a signal at a desired frequency. A phase detector is coupled to an output from the voltage controlled oscillator. The phase detector compares the phase of a signal output from the... Agent: Qualcomm Incorporated

20070052490 - Signal transmission device: The present invention provides a signal transmission device in which jitter occurring in a clock signal is eliminated. The signal transmission device has a construction in which a transmission end IC chip provided with a transmission part of a data signal and a reception end IC chip provided with a... Agent: Harness, Dickey & Pierce, P.L.C

20070046381 - High voltage generator in semiconductor memory device: A high voltage generator includes a high voltage level detector for comparing a boosted high voltage with a reference voltage and generating an oscillator control signal being a first logic level in response to a comparison result; a clock feedback block for receiving the oscillator control signal and an inverse... Agent: Blakely Sokoloff Taylor & Zafman

20070046380 - Phase controlling apparatus, frequency controlling apparatus, oscillating apparatus, phase controlling method, and frequency controlling method: A phase controlling apparatus is disclosed. The phase controlling apparatus controls phases of signals which are output from a plurality of signal sources corresponding to first phase information which indicates a phase of a predetermined signal. The phase controlling apparatus includes a phase information storing section and a phase controlling... Agent: Paul D. Greeley Ohlandt, Greeley, Ruggiero & Perle, L.L.P.

20070046382 - Method and apparatus for assisting pull-in of a phase-locked loop: A method, algorithm, software, architecture, circuit, and/or system for assisting pull-in of a phase-locked loop (PLL) are disclosed. In one embodiment, a PLL can include: (i) a phase detector that may receive a serial data stream and output a pump control signal; (ii) a charge pump that can receive the... Agent: Epson Research And Development Inc Intellectual Property Dept

20070046383 - Methods and apparatus for ring oscillator based mosfet gate capacitance measurements: An integrated circuit device is provided having a reference ring oscillator circuit having a plurality of stages. Each stage has a logic gate and electrically connecting to a first independent voltage source. The integrated circuit device also has at least one additional ring oscillator circuit having a plurality of stages.... Agent: Ryan, Mason & Lewis, LLP

20070046384 - Low-spurious-radiation microwave tube: The invention relates to a microwave tube comprising an electron gun generating an electron beam in a cylindrical microwave structure of the tube. The microwave structure delivers a microwave at one output. A collector for collecting electrons from the beam comprising at least one electrode that is mechanically coupled to... Agent: Oblon, Spivak, Mcclelland, Maier & Neustadt, P.C.

20070046385 - Time delay oscillator for integrated circuits: One aspect relates to an oscillator, and various oscillator embodiments comprise an amplifier and line driver with an input and an output and a transmission line with a predetermined transmission signal time delay. The output is adapted to produce an inverted signal with respect to a signal received at the... Agent: Schwegman, Lundberg, Woessner & Kluth, P.A.

20070046386 - Semiconductor circuit for reducing flicker noise: A semiconductor circuit for reducing flicker noise includes a negative-conductance generator and a body bias voltage supplying circuit. The negative-conductance generator includes a pair of cross-coupled field effect transistors in order to generate negative-conductance, wherein each field effect transistor includes a body. In order to remove flicker noise generated by... Agent: F. Chau & Associates, LLC

20070046387 - Method and apparatus for amplitude control using dynamic biasing in a voltage controlled oscillator: A method, circuit, and/or system for controlling an amplitude and/or limiting or reducing the energy consumed by an LC voltage controlled oscillator (LCVCO). In one embodiment, an oscillator can include: (i) a bias circuit that can provide first and second bias signals; (ii) an oscillator core that can provide a... Agent: Epson Research And Development Inc Intellectual Property Dept

20070046388 - Pll circuit with self-selecting variable divide ratio: A PLL circuit provides a self-selecting divide ratio, which is varied as necessary to lock the circuit to a reference clock which may have several possible frequencies, thereby enabling the VCO to employ a type of oscillator having a superior jitter characteristic. The PLL circuit includes a variable divider which... Agent: Koppel, Patrick & Heybl