Oscillators inventions 05/08

20080122544 - Jitter smoothing filter: A jitter smoothing filter receives a direction signal and a phase error signal having a pulse width representing a phase error signal. The jitter smoothing filter generates an up proportional control signal and a down proportional control signal for driving a charge pump. For each pulse in the phase error... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20080122545 - Low power and duty cycle error free matched current phase locked loop: A phase locked loop with a voltage controlled oscillator, where the voltage controlled oscillator includes a feedback loop and delay cells connected in a ring. Each delay cell has a biased pMOSFET to provide pull-up current and a biased nMOSFET to provide pull-down current. For each delay cell, the gate... Agent: Seth Kalson C/o Intellevate, LLC

20080122546 - Variable frequency oscillator and communication circuit with it: In a variable frequency oscillator in a semiconductor device, as the variation of an oscillation frequency caused by the variation of temperature and supply voltage and process variation is large, it is difficult to reduce the conversion ratio of control voltage dependent upon phase noise and the oscillation frequency and... Agent: Miles & Stockbridge PC

20080122547 - Constant temperature type crystal oscillator: A lead wire led-out type crystal oscillator of constant temperature type for high stability is disclosed, which includes a heat supply body that supplies heat to a crystal resonator from which a plurality of lead wires are led out, to maintain the temperature constant. The heat supply body includes a... Agent: Edwards Angell Palmer & Dodge LLP

20080122548 - Oscillator using schmitt trigger circuit: Provided is an oscillator using a Schmitt trigger circuit, the oscillator including a constant current generating section that generates a current with a constant magnitude; a current mirroring section that is connected to the constant current generating section and mirrors the current generated by the constant current generating section; a... Agent: Lowe Hauptman Ham & Berner, LLP

20080122549 - Low-noise high-stability crystal oscillator: Circuits, methods, and apparatus that provide low-noise, high-stability crystal oscillators having controlled-amplitude differential output signals and DC level control. A crystal oscillator circuit has two feedback loops, one for setting the DC level of its signals, the other for adjusting the amplitude of those signals. The DC level feedback loop... Agent: Brinks Hofer Gilson & Lione/marvell

20080122550 - Circuit with adjustable analog supply: Embodiments disclosed herein may provide circuits having two or more different supplies to separately power analog and digital componets in a circuit. In some embodiments, circuits such as PLLs may be provided with adjustable analog supplies. Other embodiments may be disclosed and/or claimed herein.... Agent: Intel/blakely

20080116980 - Asynchronous phase acquisition unit with dithering: A digital phase locked loop includes a phase acquisition unit receiving a sampled input signal and applying its output to a first input of a digital phase detector, a digital controlled oscillator producing a digital output, and a feedback path coupling the digital output of the digital controlled oscillator to... Agent: Laubscher & Laubscher, P.c.

20080116981 - Voltage controlled oscillator module with ball grid array resonator: A voltage controlled oscillator (VCO) assembly and module incorporating a ball grid array resonator as part of the tank circuit of the voltage controlled oscillator. The VCO module preferably incorporates at least an oscillator circuit, the tank circuit, and an output buffer stage circuit all defined by a plurality of... Agent: Daniel J. Deneufbourg Cts Corporation

20080116982 - Digital phase locked loop: A digital phase locked loop includes a phase acquisition unit for producing a digital representation of the phase of a reference signal, a digital phase detector having a first input receiving a digital signal from, or derived from, the output of the phase acquisition unit, digital loop filter filtering the... Agent: Laubscher & Laubscher, P.c.

20080116983 - Pll lock detection circuit and semiconductor device: A PLL lock detection circuit produces a high precision PLL lock detection signal and enables eliminating a smoothing circuit. The PLL lock detection circuit reliably detects if the PLL circuit is locked reliably and without error by simultaneously evaluating both locked and unlocked states. A continuity detection unit detects if... Agent: Ratnerprestia

20080116984 - Oscillation circuit: An oscillation circuit according to the present invention comprises a solid-state oscillator, an amplifier for feedback-controlling the solid-state oscillator, and ESD protecting circuits respectively connected to the input and output sides of the amplifier, wherein the ESD protecting circuit on the input side of the amplifier comprises an ESD protecting... Agent: Mcdermott Will & Emery LLP

20080111641 - High-resolution varactors, single-edge triggered digitally controlled oscillators, and all-digital phase-locked loops using the same: A digitally controlled oscillator (DCO) includes a pulse generator for generating a pulse signal upon an edge of a trigger signal, and at least one delay circuit coupled to delay the pulse signal generated by the pulse generator. The pulse generator is coupled to receive one of the delayed pulse... Agent: Finnegan, Henderson, Farabow, Garrett & Dunner LLP

20080111634 - Phase-locked loop capable of dynamically adjusting phase of output signal according to detection result of phase/frequency detector, and method thereof: A phase-locked method includes: generating a selection signal according to a detection result of a phase/frequency detector (PFD) of a phase-locked loop (PLL); generating a plurality of oscillation signals according to at least a first oscillation signal generated by the PLL, wherein the plurality of oscillation signals respectively correspond to... Agent: North America Intellectual Property Corporation

20080111633 - Systems and arrangements for controlling phase locked loop: A multi-Gigahertz, low jitter phase locked loop (PLL) with adjustable gain is disclosed. In one embodiment, properties of a fVCO signal of a PLL can be acquired. Properties can include the occurrences of different types of jitter on the fVCO signal and the lock status of the PLL. A gain... Agent: Ibm Coporation (rtp) C/o Schubert Osterrieder & Nickelson Pllc

20080111635 - Fractional-n controller with automatic swept frequency changes: The invention is an enhancement for fractional-N based RF frequency synthesis to allow phase locked loops to switch output frequency more rapidly. An integrated fractional-N controller automatically sweeps from its current frequency to a new frequency when a new frequency is requested. Upon initialization, the fractional-N controller receives a value... Agent: Agilent Technologies Inc.

20080111636 - Method, system, apparatus, and program for measuring the damping factor of an nth order phase locked loop (pll): A method for measuring the damping factor of an Nth-order phase-locked loop, wherein N>1, and a system, apparatus, and program that operate in accordance with the method. The method includes applying a modulation source at an input to the phase-locked loop. The method also includes measuring the output response to... Agent: Fitzpatrick Cella Harper & Scinto

20080111637 - Voltage controlled oscillator and pll having the same: A Voltage Controlled Oscillator (VCO) includes a plurality of oscillation units connected in cascade to form a chain; and a plurality of current source sections operatively connected to the oscillation units, the current source sections each being configured to control current provided to the oscillation units, wherein each of the... Agent: Volentine & Whitt Pllc

20080111638 - Delay stage, ring oscillator, pll-circuit and method: A delay stage for a semiconductor device includes at least one delay branch and at least one controllable switching apparatus. The at least one controllable switching apparatus is configured to connect a predefined amount of the at least one delay branch to a supply voltage.... Agent: Lee & Hayes, Pllc

20080111640 - Device for generating a clock signal: A device for generating a periodic clock signal according to the invention comprises a bandpass filter is disclosed. In one embodiment, the bandpass filter includes a bandpass filter input for receiving an input signal and a bandpass filter output for outputting a bandpass filter signal. The device includes further a... Agent: Dicke, Billig & Czaja

20080111639 - Device and method for generating a signal with predefined transcient at start-up: A device and a method are presented for generating an intermitted oscillating signal comprising a plurality of oscillating portions separated from each other in time. The device and method are suited for communication systems, in particular for Ultra-Wide Bandwidth (UWB) applications. The device comprises a variable oscillator for generating the... Agent: Mcdonnell Boehnen Hulbert & Berghoff LLP

20080111642 - Apparatus and methods for vco linearization: A method of linearizing a frequency versus tuning voltage response of a voltage controlled oscillator comprising multiple varactor sets. In one example, a the method of linearizing includes acts of providing a first varactor set with a first bias voltage, providing a second varactor set with a second bias voltage,... Agent: Lowrie, Lando & Anastasi, LLP

20080111644 - Back-gate coupling voltage control oscillator: A voltage control oscillator (VCO) includes a VCO circuit and a back-gate coupling circuit, wherein the VCO circuit includes at least a first transistor, a second transistor and a resonant cavity formed by an inductor and a capacitor. The back-gate coupling circuit is formed by a plurality of capacitors and... Agent: J C Patents, Inc.

20080111643 - Circuit and method of compensating for signal delay in a cable: The compensation circuit comprises an oscillator, a first variable delay line, a second variable delay line, a phase detector and a controller. The oscillator generates an oscillation signal to input into a first transmission line and a second transmission line. The first variable delay line receives the oscillation signal transmitted... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20080111645 - Oscillating apparatus with adjustable oscillating frequency: The present invention relates to an oscillating apparatus. The oscillating apparatus includes a biasing circuit, a multi-vibrator, a detecting circuit, and a selecting circuit. The biasing circuit is for generating a bias signal, wherein the biasing circuit includes a connecting port for using an impedance device to control an oscillating... Agent: North America Intellectual Property Corporation

20080111646 - Regulated supply phase locked loop: A noise-minimizing supply regulation architecture enabling high-performance integrated mixed-signal circuit systems is disclosed. The architecture identifies noise-generating and noise-sensitive sub-components of a PLL or other complex mixed-signal circuit and isolates the noise-sensitive sub-components from the noise-generating sub-components through the use of separate, wideband, high-PSRR voltage regulators for the two isolated... Agent: Rajendran Nair, Comlsi Inc.

20080106339 - Frequency agile phase locked loop: A circuit having a frequency controllable oscillator and a variable time delay circuit. The time delay circuit is fed by a signal produced by the oscillator, such time delay circuit being coupled to the oscillator to control the frequency of the signal produced by the oscillator. The circuit allows frequency... Agent: Raytheon Company C/o Daly, Crowley, Mofford & Durkee, LLP

20080106342 - Clock signal generation device, and wireless base station: A wireless base station (11) includes a wireless communication unit (17) and a clock signal generation unit (20). The clock signal generation unit (20) includes a voltage-controlled oscillation unit (21) that outputs a clock signal of an oscillating frequency according to an inputted control voltage, a time information generation unit... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080106343 - Multi-phase voltage-control oscillator: A multi-phase voltage-control oscillator including a first voltage-control oscillator circuit and a second voltage-control oscillator circuit is provided. The first voltage-control oscillator circuit includes a first LC tank and a first inductor assembly unit. The second voltage-control oscillator circuit includes a second LC tank and a second inductor assembly unit.... Agent: Jianq Chyun Intellectual Property Office

20080106345 - Voltage controlled oscillator with gain compensation: A voltage controlled oscillator includes at least one input port for receiving a control voltage and at least one voltage-to-current coupled to the input port for generating a control current in response to the control voltage. At least one current controlled oscillator generates an oscillating frequency output in response to... Agent: Howard Chen, Esq. Preston Gates & Ellis LLP

20080106340 - Frequency synthesizer and frequency calibration method: A frequency synthesizer capable of using a voltage controlled oscillator (VCO) with a low value of gain Kvco, having a short automatic frequency calibration time and automatically coping with environments and a frequency calibration method are provided. The frequency synthesizer includes a reference divider, a phase detector, a main divider,... Agent: Cantor Colburn, LLP

20080106341 - Phase locked loop, transceiver device and method for generating an oscillator signal: A phase locked loop has a controlled oscillator for outputting an oscillator signal depending on a control signal. A comparator generates a comparison result from a comparison between a reference frequency signal and a feedback signal derived from the oscillator signal. The phase locked loop also has a filter block... Agent: Thomas G. Eschweiler, Esq. Eschweiler & Associates LLC

20080106344 - Circuit arrangement for a gps system: A circuit arrangement, a system with at least one such circuit arrangement and a method for operating such a circuit arrangement is also provided. The circuit arrangement has at least two clock-controlled circuit sections and at least two oscillators that are designed to generate different clock frequencies. Switching means are... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20080106346 - Oscillator comprising two one-port surface wave resonators: The invention relates to an oscillator containing two one-port surface wave resonators as frequency-determining elements. The aim of the invention is to modify known oscillators such that the variable /S21/ for the oscillator frequency, that is adapted according to the respective temperature, only slightly depends on the temperature. The inventive... Agent: Collard & Roe, P.c.

20080106347 - Crystal oscillator: There is disclosed a crystal oscillator in which when a base ground type crystal oscillation circuit is used, a temperature characteristic of an oscillation frequency is improved to omit a measurement operation of the temperature characteristic of the oscillator, and manufacturing is facilitated to reduce a manufacturing time. In the... Agent: Jacobson Holman PLLC

20080106348 - Temperature compensated crystal oscillator: The present invention relates to an integrated circuit for a temperature compensated crystal oscillator having an external crystal. The integrated circuit comprises a temperature compensation having one fixed or at least two selectable 3rd and/or 4th and/or 5th and/or higher order temperature compensation functions for at least one specific type... Agent: Oliff & Berridge, PLC

20080100384 - Multi-beam klystron apparatus: A multi-beam klystron apparatus is disclosed. A radio-frequency interaction unit pole piece is arranged between a main magnetic field generator and an output-side magnetic field generator. The magnetic circuit formed in the neighborhood of an output cavity of a radio-frequency interaction unit is separated from the magnetic circuit of the... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20080100385 - Loop system capable of auto-calibrating oscillating frequency range and related method: A loop system capable of auto-calibrating an oscillating frequency range includes a frequency error detector, a voltage controlled oscillator (VCO), a voltage input unit, and a switch. The frequency error detector includes a rotational frequency detector, a state machine, and an up-down counter. The rotational frequency detector is used for... Agent: North America Intellectual Property Corporation

20080100387 - Multiple frequency generator for quadrature amplitude modulated communications: Multiple carrier frequencies are provided from a phase locked loop, especially closely adjacent quadrature amplitude modulated subcarriers for multiplexed data communications. A quadrature voltage controlled oscillator (VCO) and cascaded frequency dividers provide feedback to a phase comparator to lock the VCO to a reference signal. In addition to frequency divider... Agent: Duane Morris LLPIPDepartment (agere)

20080100388 - Frequency-locking device and frequency-locking method thereof: A frequency-locking device including a digitally-controlled oscillator (DCO) and a comparing unit is disclosed. The DCO is used for generating an output frequency signal. The comparing unit receives a Keep Alive signal from a universal serial bus (USB) and the output frequency signal, and compares the Keep Alive signal with... Agent: Birch Stewart Kolasch & Birch

20080100386 - Phase/frequency detector, phase locked loop, method for phase/frequency detection and method for generating an oscillator signal: A phase/frequency detector has a modulo counter for outputting a counter word with a predetermined word length depending on an oscillator signal. In addition, a modulo integrator for outputting an integrator word with the predetermined word length as a function of integration of a channel word is provided. The phase/frequency... Agent: Eschweiler & Associates LLC

20080100389 - Comparator with self-biased reference voltage for an oscillator: A comparator with a fixed reference voltage (self bias) for an oscillator is disclosed. The comparator includes: a depletion MOS network to form a source current, wherein the gate and the source has a connection; and an enhanced MOS transistor, wherein the drain or the source connects with the depletion... Agent: Rosenberg, Klein & Lee

20080100390 - Amplitude controlled quartz oscillator with broad voltage and temperature range: The invention concerns an oscillator including an input terminal, an output terminal, a resonator, and an oscillator circuit including: first and second power supply terminals, two capacitors connected between the first power supply terminal and the input terminal, and respectively the output terminal of the oscillator; first and second active... Agent: Griffin & Szipl, PC

20080100391 - Resistor-capacitor oscillation circuit capable of adjusting oscillation frequency and method of the same: There is provided an RC oscillation circuit capable of adjusting an oscillation frequency, and an oscillation method thereof. The RC oscillation circuit including: an RC oscillator including a variable resistor and a variable capacitor, the RC oscillator generating an RC oscillating signal having a frequency determined by a resistance of... Agent: Lowe Hauptman Ham & Berner, LLP

20080100392 - Low-latency start-up for a monolithic clock generator and timing/frequency reference: An apparatus, system and method are provided for low-latency start-up of a free-running harmonic oscillator. The exemplary apparatus embodiment comprises a first and second current sources to generate first and second currents; a bias current monitor adapted to detect a magnitude of the second current and to provide a control... Agent: Gamburd Law Group LLC