Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7760031 | Method for reducing inter modulation distortion products of a combined carrier wave using phase alignment of the carrier components A method is provided for reducing inter modulation distortion products using multi-carrier phase alignment of the type where a combined carrier signal is generated from the combined output carried waves of a plurality of numerically controlled oscillators in which t... | 07/20/2010 |
| 7622998 | Solid state intra-cavity absorption spectrometer The present invention provides a solid state intra-cavity absorption spectrometer comprising a solid-state gain device interspersed in an array of oscillators in a chamber to produce a wide area coherent high power source of Terahertz radiation. The source is then p... | 11/24/2009 |
| 7535306 | Oscillator coupling system An oscillator coupling system includes a plurality of oscillating members and a plurality of delay members connecting at least two of the oscillating members. Between the delay members is a specific phase or time delay relationship such that characteristics of phase... | 05/19/2009 |
| 7414490 | Dual-band voltage-controlled oscillator using bias switching and output-buffer multiplexing Disclosed is a dual-band voltage-controlled oscillator using bias switching and output-buffer multiplexing. The dual-band voltage-controlled oscillator includes a power supply unit for supplying a source voltage; plural voltage-controlled oscillation units for outpu... | 08/19/2008 |
| 7397314 | Redundant clock source A redundant clock source provides a stable clock source for digital system. The clock source uses two oscillators to generate a clock signal. If one of the oscillators fails, the clock signal is generated from the other oscillator until the failed oscillator is repl... | 07/08/2008 |
| 7369007 | Oscillating circuit for suppressing second harmonic wave An oscillating circuit includes an oscillating transistor in which the collector or the base is grounded in a high-frequency manner, and a bias resistor connects the emitter of the oscillating transistor to a ground in a direct-current manner. In the oscillating cir... | 05/06/2008 |
| 7348858 | Photonic diode An element for interacting with electromagnetic radiation is disclosed, including a first self-resonant body, a second self-resonant body, and a directional device interposed between the first self-resonant body and the second self-resonant body. The directional dev... | 03/25/2008 |
| 7292113 | Multi-octave band tunable coupled-resonator oscillator In one aspect, a voltage controlled oscillator is provided that includes circuitry comprising tunable coupled resonator networks, which are coupled to a terminal of a pair of three-terminal devices through a tuning voltage network which supports wide-band tunability... | 11/06/2007 |
| 7276981 | 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 p... | 10/02/2007 |
| 7277519 | Frequency and phase correction in a phase-locked loop (PLL) In one embodiment, a system for frequency and phase correction in a phase-locked loop (PLL) includes a phase frequency detector, first and second charge pumps respectively generating a first current and a voltage, a voltage-to-current (V2I) converter, a current summ... | 10/02/2007 |
| 7227397 | System, method and circuits for generating a signal The present invention relates to the field of electronics. More particularly, forms of the present invention relate to systems, methods and circuits for generating a signal. A system, method and circuit for generating a signal are described. Forms of this system, me... | 06/05/2007 |
| 7209015 | Oscillator circuit having a temperature dependence An oscillator circuit includes a current source for generating a current depending on the ambient temperature, a plurality of oscillators for oscillating at respective periods depending on the current from the current source and based on different relations between ... | 04/24/2007 |
| 7196590 | Multi-frequency sythesis using symmetry in arrays of coupled nonlinear oscillators Certain spatio-temporal symmetries induce one array of a two-array coupled network of oscillators to oscillate at N times the frequency of the other array, where N is the number of oscillators in each array. ... | 03/27/2007 |
| 7184205 | Electromagnetic array structure capable of operating as an amplifier or an oscillator An apparatus and methods for operating a single quasi-optical structure are disclosed. The apparatus operates as an amplifier or an oscillator. The method disclosed teaches how to operate the single quasi-optical structure as an amplifier or an oscillator. ... | 02/27/2007 |
| 7164324 | CMOS single-ended frequency doubler A CMOS single-ended frequency doubler with improved subharmonic rejection and low phase noise which allows a single ended reference signal to be utilized in a Balanced Colpitts oscillator. The input is reproduced with a 180-degree phase shift for the opposite Colpit... | 01/16/2007 |
| 7164323 | Phase synchronous multiple LC tank oscillator A phase synchronous multiple LC tank oscillator includes a plurality of oscillator stages configured to oscillate synchronously. The phase of each of the plurality of oscillator stages is substantially the same. ... | 01/16/2007 |
| 7145404 | Injection locked high frequency oscillator A push-push high frequency oscillator comprises a pair of amplifiers for oscillation, a loop-shaped microstrip line for connecting inputs of the pair of amplifiers to each other and connecting outputs of the pair of amplifiers to each other, a slot line disposed bet... | 12/05/2006 |
| 7145405 | Planar high frequency oscillator A planar harmonic high frequency oscillator comprises a pair of amplifiers for oscillation, a micro-strip line for connecting between inputs of the pair of amplifiers and between outputs of the amplifiers, a slot line disposed between the inputs and the outputs of t... | 12/05/2006 |
| 7138877 | PLL and method for providing a single/multiple adjustable frequency range A PLL circuit and method provides an adjustable operating frequency range by using at least two VCOs. In an embodiment of the present invention, circuit components of a PLL are adjusted in order to obtain a selected frequency range. In particular, a gain of a charge... | 11/21/2006 |
| 7119627 | Phase-locked loop circuit as well as a voltage-controlled oscillator as used in a phase-locked loop circuit A phase-locked loop circuit comprises a voltage-controlled oscillator with at least one resonator circuit for driving the oscillator to an output frequency which is a multiple of the resonator frequency. The voltage-controlled oscillator is connected to a phase-lock... | 10/10/2006 |
| 7119625 | High frequency oscillator using transmission line resonator A high frequency oscillator comprises a transmission line resonator having a midpoint which serves as a null potential point, a pair of active devices for oscillation respectively connected to a pair of mutually opposite-phase resonance wave points for the transmiss... | 10/10/2006 |
| 7120817 | Method of signal distribution based on a standing wave within a closed loop path A closed-loop based timing signal distribution architecture includes at least one signal source coupled to a signal path disposed in a closed loop arrangement to facilitate generation of a standing wave signal within the signal path. In one embodiment, at least one ... | 10/10/2006 |
| 7113059 | Variable-frequency high frequency filter A frequency-variable high frequency filter comprises: a substrate; a ground conductor having an opening provided on one principal surface of the substrate; a center conductor provided in the opening to make up a coplanar line resonator with the substrate and the gro... | 09/26/2006 |
| 7109917 | Intergrated semiconductor component for high-frequency measurement and use thereof It is provided that the semiconductor component is a component of a semiconductor circuit (10) comprising a first silicon layer (12), an adjoining silicon dioxide layer (insulating layer (14)) and a subsequent further silicon layer (structured l... | 09/19/2006 |
| 7102459 | Power combiner A power combiner for the combining of symmetric and asymmetric traveling wave energy comprises a feed waveguide having an input port and a launching port, a reflector for reflecting launched wave energy, and a final waveguide for the collection and transport of laun... | 09/05/2006 |
| 7088189 | Integrated low noise microwave wideband push-push VCO In one aspect, a voltage controlled oscillator is provided that includes circuitry comprising tunable coupled resonator networks, which are coupled to a terminal of a pair of three-terminal devices through a tuning voltage network which supports wide-band tunability... | 08/08/2006 |
| 7075377 | Quadrature voltage controlled oscillators with phase shift detector In wireless application there is made use of a quadrature oscillators that generate signals that are capable of oscillating at quadrature of each other. The quadrature oscillator is comprised of two differential modified Colpitts oscillators. A capacitor bank allows... | 07/11/2006 |
| 7069062 | Transceiver capable of causing series resonance with parasitic capacitance A transceiver for inducing electric fields according to data to be transmitted in an electric field propagating medium, and carrying out at least data transmission by using induced electric fields, is formed by a transmission unit configured to modulate the data to ... | 06/27/2006 |
| 7061336 | High frequency oscillator A high frequency oscillator which obtains an oscillation output by combining the outputs of two oscillators has a substrate, first and second amplifiers for oscillation so disposed that their output ends be opposite each other, first and second signal lines each con... | 06/13/2006 |
| 7061333 | Slot line based high frequency oscillator using two-port element A high frequency oscillator has a substrate, a resonator circuit which is disposed on one principal surface of the substrate and consists of a closed loop-shaped slot line including an inner conductor and an outer conductor, an electric boundary point set on the slo... | 06/13/2006 |
| 7053723 | Oscillators with active higher-in-order phase shift filtering The present invention proposes a new way of improving the phase stability and frequency selectivity of a phase shift oscillator (100). By introducing a filter-order enhancing feedback loop (124) in association with a phase shift filter (122) in ... | 05/30/2006 |
| 7053725 | 4X crystal frequency multiplier with op amp buffer between 2X multiplier stages A frequency-multiplying circuit generates a multiple of the fundamental frequency of a crystal that oscillates. A first differential multiplier is coupled to the crystal nodes and generates a frequency-doubled output. The frequency-doubled output is applied to an op... | 05/30/2006 |
| 7015765 | Resonant clock distribution for very large scale integrated circuits A circuit for distributing a clock signal in an integrated circuit includes a capacitive clock distribution circuit having at least conductor therein. At least one inductor is formed in a metal layer of the integrated circuit and is coupled to the clock distribution... | 03/21/2006 |
| 7012475 | 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 inductiv... | 03/14/2006 |
| 7005930 | Synchronously coupled oscillator A phase synchronous multiple LC tank oscillator includes a plurality of oscillator stages that are configured to oscillate synchronously. The phase of each of the plurality of oscillator stages is substantially the same and the plurality of oscillators are inductive... | 02/28/2006 |
| 6970048 | Inductive-capacitive (LC) based quadrature voltage controlled oscillator (VCO) with deterministic quadrature signal phase relationship A circuit and method for generating quadrature signals with a deterministic phase relationship. Between two inductive-capacitive (LC) based quadrature voltage controlled oscillators (VCO), phase shift circuitry is interposed such that the individual LC VCO circuits ... | 11/29/2005 |
| 6949887 | High frequency inductive lamp and power oscillator An oscillator includes an amplifier having an input and an output, a feedback network connected between the input of the amplifier and the output of the amplifier, the feedback network being configured to provide suitable positive feedback from the output of the amp... | 09/27/2005 |
| 6946921 | Method and apparatus for producing high-frequency oscillations A method and apparatus for producing high-frequency oscillations is disclosed. A new resonator architecture minimizes via losses and supports a compact layout of active circuitry. The resonator architecture incorporates dual resonant transmission lines to reduce res... | 09/20/2005 |
| 6922113 | Semiconductor integrated circuit having oscillators or oscillation circuits connected to a wiring line at connection points with intervals in length there between The oscillation circuit includes at least two ring oscillation circuits in each of which a plurality of inverters are connected in a ring shape in a multi-stage fashion, and a conductive wiring line. The output of at least one inverter of each of the ring oscillatio... | 07/26/2005 |
| 6919776 | Traveling wave device for combining or splitting symmetric and asymmetric waves A traveling wave device for the combining or splitting of symmetric and asymmetric traveling wave energy includes a feed waveguide for traveling wave energy, the feed waveguide having an input port and a launching port, a reflector for coupling wave energy between t... | 07/19/2005 |
