Oscillators inventions

20090267697 - Frequency synthesizer using a phase-locked loop and single side band mixer: A frequency synthesizer is built using a phase locked loop incorporating a single side band mixer in the input. The single side band mixer is preferably realized with digital logic and FETs, and the resulting frequency synthesizer simultaneously improves control over the frequency resolution, noise floor and operating frequency range.... Agent: Silber & Fridman

20090267698 - Dual supply inverter for voltage controlled ring oscillator: A voltage controlled ring oscillator reduces sensitivity of an oscillation frequency to a control voltage by using a dual supply inverter logic circuit. The dual supply inverter logic circuit includes two inverter circuits coupled in parallel between an input terminal and an output terminal. The first inverter circuit is powered... Agent: Knobbe Martens Olson & Bear LLP

20090267699 - Timing oscillators and related methods: 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 generate stable signals with low phase noise at very high frequencies which allows a timing... Agent: Wolf Greenfield & Sacks, P.C.

20090267700 - Timing oscillators and related methods: 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 generate stable signals with low phase noise at very high frequencies which allows a timing... Agent: Wolf Greenfield & Sacks, P.C.

20090261909 - Voltage-controlled oscillator including plurality of delay cells: A voltage-controlled oscillator includes a delay circuit. The delay circuit includes a first buffer inverter which receives one of the differential input signal and outputs an other of the differential output signal, a second buffer inverter which receives the other of the differential input signal and outputs the one of... Agent: Mcginn Intellectual Property Law Group, PLLC

20090261910 - Method and system for configuration of a phase-locked loop circuit: A phase-locked loop (PLL) circuit configuration is implemented using a variety of methods and devices. According to one example embodiment, a low power configuration is determined for the PLL circuit which meets a set of desired phase-locked loop circuit characteristics. The PLL circuit (110) has a first frequency-divider (112, 119),... Agent: Nxp, B.v. Nxp Intellectual Property & Licensing

20090261917 - Auxiliary varactor for temperature compensation: 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 capacitance controlled by a temperature-dependant control voltage to minimize the overall change in... Agent: Qualcomm Incorporated

20090261911 - Multi-phase oscillator: A multi-phase oscillator includes a plurality of ring oscillators (21) each having a plurality of output ports and each formed by connecting an odd number of inverters (20) in a ring, and a plurality of resistance elements (30) coupling the output ports between the plurality of ring oscillators (21) so... Agent: Mcdermott Will & Emery LLP

20090261912 - Crystal device for surface mounting: A surface-mounted device includes a ceramic case, which has a concave portion formed by a bottom wall layer, a frame wall intermediate layer and a frame wall upper layer, and which houses at least a crystal element inside the concave portion. The ceramic case includes: arc-formed notched parts at outer... Agent: Carrier Blackman And Associates

20090261913 - Crystal device for surface mounting: A crystal device for surface mounting, in which a metal cover is jointed to the metal ring by seam welding, satisfies relationships A2/A1<C2/C1 and B2/B1<D2/D1, where A1 is a length of a long side of the metal ring, A2 is a length of a straight portion of a long side... Agent: Carrier, Blackman & Associates, P.C.

20090261915 - Crystal device for surface mounting: In a crystal device for surface mounting which is configured such that at least a crystal element 2 is housed in a ceramic case 1 in a rectangular form in plan view, which is composed of a bottom wall 1a and a frame wall 1b, and whose cross section is... Agent: Carrier Blackman And Associates

20090261914 - Crystal oscillator circuits: An oscillator circuit. A gain stage element is coupled between both terminals of the crystal. The gain stage element provides a transconductance for oscillation according to a current provided by a current source, and outputs a periodic signal through an output terminal. A bias element is coupled between an input... Agent: Thomas, Kayden, Horstemeyer & Risley, LLP

20090261916 - Programmable filter for lc tank voltage controlled oscillator (vco), design structure and method thereof: A programmable filter for LC tank voltage controlled oscillator (VCO) and a design structure for a programmable filter for LC tank VCO. The programmable filter includes a proportional control comprising a plurality of capacitance biased by different input voltages and an integral control comprising a filter element with a capacitance... Agent: Greenblum & Bernstein, P.L.C

20090256642 - Locked-loop circuit: A locked loop circuit, comprising: an input, for receiving an input signal; controllable modification circuitry for generating a signal; an output for the generated signal; a feedback loop for the generated signal; a comparator for comparing the input signal and a signal from the feedback loop, and for producing a... Agent: Dickstein Shapiro LLP

20090256638 - Atomic frequency standard based on enhanced modulation efficiency semiconductor lasers: This invention concerns the realization of a Coherent-Population-Trapping (CPT) atomic frequency standard using a laser which has feedback from an external cavity. The mode spacing of the external cavity is adjusted to equal the hyperfine transition frequency of the atomic vapor or a sub-harmonic of it. The external cavity enhances... Agent: Simon Kahn - Pyi Tech, Ltd. C/o Landonip, Inc

20090256639 - All-digital phase-locked loop and bandwidth adjusting method therefore: An all-digital phase-locked loop is disclosed. The all-digital phase-locked loop includes a digitally controlled oscillator, a phase detector, a loop filter, and a bandwidth modification unit. The digitally controlled oscillator is controlled by an oscillator tuning word to generate a variable signal, wherein the oscillator tuning word includes a first... Agent: Lowe Hauptman Ham & Berner, LLP

20090256640 - Agile high resolution arbitrary waveform generator with jitterless frequency stepping: Jitterless transition of the programmable clock waveform is generated employing a set of two coupled direct digital synthesis (DDS) circuits. The first phase accumulator in the first DDS circuit runs at least one cycle of a common reference clock for the DDS circuits ahead of the second phase accumulator in... Agent: Scully Scott Murphy & Presser PC

20090256641 - Oscillator with a low power consumption: A package device, such as an oscillator, includes a package module, a circuit module, a plurality of conductive pins, and a plurality of conductive arms. The package module defines an airtight space therein. The circuit module is disposed in the airtight space in the package module. Each of the conductive... Agent: Vedder Price P.C.

20090256643 - Voltage controlled oscillator, and pll circuit and radio communication device each including the same: A voltage controlled oscillator of the present invention includes an inductor circuit 110, C-coupling type variable capacitance circuits 120 and 140, a direct-coupling type variable capacitance circuit 130, and a negative resistance circuit 160, which are connected in parallel, and a reference voltage generating section 180 that generates reference voltages... Agent: Wenderoth, Lind & Ponack L.L.P.

20090251225 - Fractional and integer pll architectures: A digital fractional PLL introduces an accumulated phase offset before the digital VCO using a digital accumulator to achieve the fractional part of the division ratio. To provide this phase offset, the digital accumulator can integrate a fractional component Δn. By forcing Δn to zero, the PLL becomes an integer-N... Agent: Bever Hoffman & Harms, LLP

20090251226 - Lock detection circuit for phase locked loop: A lock detector circuit for detecting a lock condition between a reference signal and a feedback signal includes a first counter for outputting a first counter value indicative of a number of clock cycles of the reference signal, and a second counter for outputting a second counter value indicative of... Agent: Freescale Semiconductor, Inc. Law Department

20090251223 - Techniques for characterizing performance of transistors in integrated circuit devices: A method, system and computer program product for characterizing FET transistors in an electronic circuit (IC) device using Performance Screen Ring Oscillator (PSRO) techniques. During PSRO testing, logic and non-logic bias voltages are applied to gate terminals of the being tested FETs to determine process-related variations and the relative strength... Agent: Dillon & Yudell LLP

20090251224 - Compact optical assembly for chip-scale atomic clock: Provided is a chip-scale atomic clock having a folded optic configuration or physics package. In particular, the physics package includes a vapor cell for containing gaseous alkali atoms and a VCSEL for generating a laser light. One or more heating elements are positioned to simultaneously heat both the vapor cell... Agent: Teledyne Scientific & Imaging, LLC Glenn H. Lenzen Polsinelli Shughart PC

20090251227 - Constant gm oscillator: The present invention provides a constant gm circuit that generates a bias current for a emitter/source-coupled multivibrator oscillator. The stable gm bias limits the temperature dependence of the oscillator. Trimming a resistor in the constant gm circuit compensates for process variations, and current sources may be provided that are mirrors... Agent: Cesari And Mckenna, LLP

20090251228 - Voltage-controlled variable frequency oscillation circuit and signal processing circuit: A voltage-controlled variable frequency oscillation circuit, includes: an oscillation circuit section including a resonance circuit which includes a coil and a variable capacitance element, and a negative resistance circuit; and a first resistor connected between the oscillation circuit section and a first one of a pair of terminals of a... Agent: K&l Gates LLP