Quotables
"The Americans have need of the telephone, but we do not. We have plenty of messenger boys."
Sir William Preece, chief engineer, British Post Office ; 1878
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8102218 | Parallel-structured switched variable inductor circuit An inductor circuit includes a pair of inductors connected in parallel with each other and a switch for turning on and off electric power to one of the pair of inductors. The inductance of the inductor circuit can be varied and the quality factor Q can be improved. ... | 01/24/2012 |
| 8063712 | Method and system for voltage controlled oscillator impedance control to optimize performance, efficiency, and power consumption Methods and systems for VCO impedance control to optimize performance, efficiency, and power consumption are disclosed and may include selectively coupling one of a plurality of taps on a multi-tap inductive load to a voltage controlled oscillator (VCO) on a chip co... | 11/22/2011 |
| 7915968 | Digitally controlled oscillator (DCO) A digitally controlled oscillator (DCO) includes a current generator which generates an electric current having a magnitude corresponding to an input signal, and a digitally controlled oscillating unit which generates an oscillating frequency based on an inductance ... | 03/29/2011 |
| 7902934 | Variable inductor, and oscillator and communication system using the same There are provided a variable inductor with little degradation in quality factor, and an oscillator and a communication system using the variable inductor. An inductance controller comprising a reactance device with a variable device value, such as, for example, a v... | 03/08/2011 |
| 7893786 | Parallel-structured switched variable inductor circuit An inductor circuit includes a pair of inductors connected in parallel with each other and a switch for turning on and off electric power to one of the pair of inductors. The inductance of the inductor circuit can be varied and the quality factor Q can be improved. ... | 02/22/2011 |
| 7750748 | Method and apparatus for distributing clock signal using standing waves A Method and an apparatus for distributing a clock signal are disclosed. The apparatus for distributing a clock signal includes a pair of flat plates, a variable inductor and a connection channel. The pair of flat plates includes a clock flat plate having at least o... | 07/06/2010 |
| 7633352 | Integrated tunable resonance circuit An integrated tunable resonance circuit is provided for providing a high-frequency output signal with a frequency dependent on a control signal, comprising a parallel resonance circuit with a first inductive element and an output for providing the high-frequency out... | 12/15/2009 |
| 7564319 | Vertical LC tank device An LC tack structure. The structure, including a set of wiring levels on top of a semiconductor substrate, the wiring levels stacked on top of each other from a lowest wiring level nearest the substrate to a highest wiring level furthest from the substrate; an induc... | 07/21/2009 |
| 7508280 | Frequency adjustment techniques in coupled LC tank circuits CMOS LC tank circuits and flux linkage between inductors can be used to distribute and propagate clock signals over the surface of a VLSI chip or μprocessor. The tank circuit offers an adiabatic behavior that recycles the energy between the reactive elements and mi... | 03/24/2009 |
| 7417511 | Modulation circuit with integrated microelectro-mechanical system (MEMS) components A modulation circuit includes a microelectronic electromechanical system (MEMS) based resonant structure having a resonant frequency, an excitation input and an output. A control module is coupled to the excitation input of the MEMS based resonant structure. The con... | 08/26/2008 |
| 7403075 | Ultra wide band signal generator Disclosed is an ultra wide band signal generator. The ultra wide band signal generator generates a signal of a required frequency using a harmonic signal having a frequency range of a ultra wide band (UWB). The ultra wide band signal generator includes an active ind... | 07/22/2008 |
| 7362194 | Oscillator circuit and L load differential circuit achieving a wide oscillation frequency range and low phase noise characteristics An oscillator circuit is formed of a differential LC resonant circuit formed of an L load differential circuit including inductance-variable portions and a capacitor element, and a positive feedback circuit formed of N-channel MOS transistors. The inductance-variabl... | 04/22/2008 |
| 7336147 | Inductance variable device A inductance variable device includes a first inductor, a second inductor magnetically coupled to the first inductor, a current source whose current is variable, electrically connected to the first inductor, and a current control unit. The current control unit contr... | 02/26/2008 |
| 7323948 | Vertical LC tank device An LC tank structure. The structure, including a set of wiring levels on top of a semiconductor substrate, the wiring levels stacked on top of each other from a lowest wiring level nearest the substrate to a highest wiring level furthest from the substrate; an induc... | 01/29/2008 |
| 7268634 | Dual-mode voltage controlled oscillator using integrated variable inductors A novel form of an integrated variable inductor uses an on-chip transformer together with a variable capacitor. The variable capacitor can either be a varactor or a switched capacitor array and is connected to the secondary coil of the transformer. By changing the c... | 09/11/2007 |
| 7259649 | Switchable inductance A switchable inductance that can be formed in an integrated circuit, including a spiral interrupted between two first points connected to two terminals via two metallizations running one above the other, one of the two metallizations being deformable; a hollowing be... | 08/21/2007 |
| 7245897 | Using an electroacoustic resonator An apparatus in accordance with one embodiment of the present invention may include a local oscillator having an electroacoustic resonator; and zero intermediate frequency signal processing circuitry coupled to the local oscillator. In certain embodiments, the elect... | 07/17/2007 |
| 7202754 | Oscillator circuit and L load differential circuit achieving a wide oscillation frequency range and low phase noise characteristics An oscillator circuit is formed of a differential LC resonant circuit formed of an L load differential circuit including inductance-variable portions and a capacitive element, and a positive feedback circuit formed of N-channel MOS transistors. The inductance-variab... | 04/10/2007 |
| 7190239 | Variable inductor, oscillator including the variable inductor and radio terminal comprising this oscillator, and amplifier including the variable inductor and radio terminal comprising this amplifier An amplifier comprises an amplifier circuit which comprises a first inductor as an impedance element for degeneration, and a control circuit which has a second inductor electro-magnetically connected to the first inductor, and changes a control current flowing throu... | 03/13/2007 |
| 7082580 | Energy recycling in clock distribution networks using on-chip inductors A clock distribution network for an integrated circuit includes a clock driver for generating a clock signal having a selected clock frequency, a clock net coupled to the clock driver wherein the clock net has a capacitive reactance, and an inductor coupled to the c... | 07/25/2006 |
| 7065331 | Resonator configuration A resonator system and method are provided which includes/uses a tunable reference resonator, parts for tuning the reference resonator to a reference value via a controlled variable for the reference resonator, a tunable circuit resonator, and parts for tuning the c... | 06/20/2006 |
| 6922327 | Photolithographically-patterned variable capacitor structures and method of making A new type of high-Q variable capacitor includes a substrate, a first electrically conductive layer fixed to the substrate, a dielectric layer fixed to a portion of the electrically conductive layer, and a second electrically conductive layer having an anchor portio... | 07/26/2005 |
| 6882182 | Tunable clock distribution system for reducing power dissipation A tunable clock distribution system is used to minimize the power dissipation of a clock distribution network in an integrated circuit. The tunable clock distribution system provides a tunable inductance on the clock distribution network to adjust a resonant frequen... | 04/19/2005 |
| 6861913 | Voltage-controlled oscillator with LC resonant circuit A voltage-controlled oscillator device with an LC-resonant circuit, in particular for implementing integrated voltage-controlled oscillators for the lower GHz range, is disclosed. The device achieves continuous frequency tunability in a wide range in particular with... | 03/01/2005 |
| 6853257 | PLL circuit including a voltage controlled oscillator and a method for controlling a voltage controlled oscillator A voltage controlled oscillator having a wide oscillation frequency band, desirable carrier-noise characteristic, and desirable linearity of the oscillation frequency relative to a control voltage. The voltage controlled oscillator includes an oscillation unit and a... | 02/08/2005 |
| 6621365 | Method and apparatus providing a dual mode VCO for an adaptive receiver An RF VCO (260A) forms, in the preferred embodiment, a part of a dual mode mobile station (100). Also disclosed is a method for operating the VCO. The VCO is operated in a first frequency band using a first inductance (300A) that forms part of a first res... | 09/16/2003 |
| 6597248 | Voltage-controlled oscillator A voltage-controlled oscillator in a phase-locked loop includes an LC oscillator. Control inductors are disposed of in the proximity of oscillator inductors, respectively. The control inductors are connected to a current source. By applying a control curr... | 07/22/2003 |
| 6437653 | Method and apparatus for providing a variable inductor on a semiconductor chip One embodiment of the present invention provides an inductor with a variable inductance within a semiconductor chip. This inductor includes a primary spiral composed of a conductive material embedded within the semiconductor chip to provide a source of va... | 08/20/2002 |
| 6323735 | Method and apparatus for synthesizing high-frequency signals utilizing on-package oscillator circuit inductors A method and apparatus for synthesizing high-frequency signals that overcomes integration problems while meeting demanding phase noise and other impurity requirements. In one embodiment, on-package oscillator circuit inductors are provided for band select... | 11/27/2001 |
| 6307440 | Oscillating circuit, an oscillator frequency adjusting method, and a tuner In an oscillator circuit employing a pattern coil on a printed-wiring circuit board as a resonator circuit, in order to satisfactorily adjust dispersion in oscillation frequencies, an air-core coil wound by 0.5 turn and less than one turn is provided so a... | 10/23/2001 |
| 6255913 | Variable frequency oscillator circuit A variable frequency oscillator (VFO) circuit having an increased frequency tuning range to selectively obtain operating frequencies above and below a set frequency. The circuit includes a tank inductor connected in parallel with a tank capacitor for prim... | 07/03/2001 |
| 6194976 | Multiple band voltage controlled oscillator using impedance scaling A multiple band voltage controlled oscillator capable of generating multiple operating frequencies, and a method of generating multiple operating frequencies, includes a tank circuit having a diode element and an impedance element with a radio frequency i... | 02/27/2001 |
| 6184755 | Article comprising a variable inductor A micromechanical variable/tunable inductor is disclosed. The present inductor comprises at least two elements capable of supporting spatial electromagnetic coupling and means for varying a geometrical relationship thereof. Varying the geometrical relatio... | 02/06/2001 |
| 6127900 | Dual frequency synthesis system The present invention includes a Voltage Controlled Oscillator (VCO) having a resonant circuit capable of being quickly switched between two resonant frequencies in order to generate two different LO frequencies. In a preferred embodiment, the present inv... | 10/03/2000 |
| 6124766 | Frequency converter circuit for cable modem tuner A local oscillation circuit in a frequency converter circuit includes a resonant circuit, and a differential amplifier circuit connected to the resonant circuit. The differential amplifier circuit includes two transistors constituting a differential stage... | 09/26/2000 |
| 6121850 | Digitally adjustable inductive element adaptable to frequency tune an LC oscillator A digitally adjustable inductive element which can be implemented in an integrated circuit. The digitally adjustable inductive element can include a first inductor, and a digital inductance controller operatively coupled to the first inductor which can be... | 09/19/2000 |
| 6107893 | Voltage tunable active inductorless oscillator An inductorless voltage controlled oscillator that may be fabricated using CMOS circuit elements. In one aspect, the present invention includes a synthetic inductance formed on a substrate and having first and second power supply terminals and a signal po... | 08/22/2000 |
| 6101371 | Article comprising an inductor An article comprising a micro-machined, passively self-assembling inductor is disclosed. The inductor is fabricated using MEMS technology and advantageously utilizes materials compatible with CMOS such that inductor is monolithically integrable with a CMO... | 08/08/2000 |
| 6005450 | Microwave oscillator having at least one adjustment pin A microwave oscillator includes a waveguide that is short-circuited on one side and a diode arranged therein, which receives its supply voltage by way of a coupling pin passed through a waveguide wall. At least one adjustment pin, extends into the wavegui... | 12/21/1999 |
| 5872489 | Integrated tunable inductance network and method An integrated, tunable inductance network features a number of fixed inductors fabricated on a common substrate along with a switching network made up of a number of micro-electromechanical (MEM) switches. The switches selectably interconnect the inductor... | 02/16/1999 |
