Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8031016 | Multiplying oscillator and wireless apparatus in which the same is installed An object of the invention is to provide a multiplying oscillator capable of generating a high frequency signal by small circuit scale and power consumption in an oscillator for generating a signal with a frequency of a microwave band or more, and a local oscillator... | 10/04/2011 |
| 7898347 | Dielectric resonator oscillator and radar system using the same In the mass production of dielectric resonator oscillators (DROs), it is necessary to regulate the position where a dielectric resonator is placed with a high degree of accuracy and thus time required for the assembly work increases undesirably. Further, a terminati... | 03/01/2011 |
| 7764136 | Microwave transmission line integrated microwave generating element and microwave transmission line integrated microwave detecting element A strip line integrated microwave generating element and a microwave detecting element comprises a signal electrode and a ground electrode. The element has a magnetic tunnel junction structure which includes a magnetization fixed layer, a MgO tunnel barrier layer, a... | 07/27/2010 |
| 7724099 | High frequency oscillator circuit with feedback circuit of fet and short-stub transmission line In a high frequency oscillator circuit including first and second field effect transistors, the first field effect transistor has a gate connected to a short-stub transmission line and a drain connected to an oscillation output terminal, and the second field effect ... | 05/25/2010 |
| 7696833 | Oscillator An oscillator includes a first oscillating portion that outputs a first oscillation signal having a first oscillation frequency through a first intermediate node to an output terminal, a mounting portion that includes an insulating layer and that mounts the first os... | 04/13/2010 |
| 7538628 | Harmonic oscillator using transmission line resonator A harmonic oscillator comprises a transmission line resonator in which an oscillation frequency depends on an electrical length of a transmission line and both ends of the transmission line are electrical open ends; an active element for oscillation as a negative re... | 05/26/2009 |
| 7463104 | Frequency tunable oscillator There is provided a frequency tunable oscillator that has less degradation of oscillation characteristics due to a parasitic reactance component or the like without mounting therein a lumped constant element such as a variable capacitance element. The frequency tuna... | 12/09/2008 |
| 7365612 | Low noise, hybrid tuned wideband voltage controlled oscillator An oscillator comprising an active device having first, second and third terminals, a plurality of micro-stripline resonators coupled together to form a coupled-resonator network, the coupled-resonator network being coupled to the second terminal of the active devic... | 04/29/2008 |
| 7341488 | EMI-resistant circuit board assembly An EMI-resistant circuit board assembly includes a plurality of circuit boards arranged in a stack and a metal shielding frame respectively sandwiched in between each two adjacent circuit boards. One of the circuit boards has at least one high-speed device producing... | 03/11/2008 |
| 7339440 | Nonlinear pulse oscillator methods and apparatus Methods and apparatus for implementing stable self-starting and self-sustaining electrical nonlinear pulse (e.g., soliton, cnoidal wave, or quasi-soliton) oscillators. In one example, a nonlinear pulse oscillator is implemented as a closed loop structure that compri... | 03/04/2008 |
| 7323947 | Oscillator circuit An oscillator circuit includes first and second transistors forming a differential pair, an output combiner connected to first terminal sides of the first and second transistors, and a current source connected to second terminal sides of the first and second transis... | 01/29/2008 |
| 7301408 | Integrated circuit with low dielectric loss packaging material An integrated circuit package comprises an integrated circuit that comprises a temperature sensor that senses a temperature of the integrated circuit. A memory module stores data relating to oscillator calibrations and selects one of the oscillator calibrations as a... | 11/27/2007 |
| 7274263 | Microstrip stabilized quantum well resonance-tunneling generator for millimeter and submillimeter wavelength range A microstrip stabilized quantum well resonance-tunneling generator which generates electromagnetic waves for millimeter and submillimeter wavelength range is provided The generator includes a resonant tunneling semiconductor quantum well diode, and a microstrip reso... | 09/25/2007 |
| 7268637 | Low cost RF oscillator devices manufactured from conductive loaded resin-based materials Inductor-capacitor (LC) oscillator circuits are formed of a conductive loaded resinbased material. The conductive loaded resin-based material comprises micron conductive powder(s), conductive fiber(s), or a combination of conductive powder and conductive fibers in a... | 09/11/2007 |
| 7265642 | User-definable thermal drift voltage control oscillator A voltage controlled oscillator that includes a slot-cut-microstrip-line coupled between a resonator, a tuning diode network and an active device and being operable to act as a common-coupling capacitor between the resonator, the tuning diode network and the active ... | 09/04/2007 |
| 7236060 | Electronic pulse generator and oscillator Distributed traveling wave oscillator circuitry is disclosed. The oscillator circuitry includes a signal path, a plurality of active switching means, and a direction promoting means. The signal path is formed from a pair of adjacent conductors and exhibits endless e... | 06/26/2007 |
| 7218180 | Low noise oscillator A low noise oscillator constructed using a rotary traveling wave oscillator. The conductors of the rotary traveling wave oscillator provide at any tap position a pair of oppositely phased oscillations and these oscillations have slightly different phases at position... | 05/15/2007 |
| 7206371 | Transmitting and receiving apparatus capable of the suppression of the microphonic noise in digital transmission system A transmitting and receiving apparatus including a modulating circuit for modulating an input digital data; a first frequency converting circuit for converting a signal output from the modulating circuit into a signal of a predetermined frequency; an amplifying/bran... | 04/17/2007 |
| 7180381 | Wideband voltage controlled oscillator employing evanescent mode coupled-resonators In one aspect, the present invention includes a voltage controlled oscillator comprising an active device having a plurality of resonators coupled across two terminals of the device and at least one resonator coupled across the plurality of resonators. The at least ... | 02/20/2007 |
| 7167057 | Microwave oscillator A microwave oscillator having a hollow conductor, an oscillation generator which is mounted on a heatsink and projects into the hollow conductor, and a printed circuit board having electronic components for supplying direct voltage to the oscillation generator. The ... | 01/23/2007 |
| 7161441 | High frequency distributed oscillator using coupled transmission line The present invention relates to a distributed oscillator, and more particularly, to a high frequency distributed oscillator using coupled transmission lines. According to the present invention, coupled transmission lines capable of increasing the frequency selectiv... | 01/09/2007 |
| 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 |
| 7145406 | Phase adjusting circuit and oscillator including the same A phase adjusting circuit includes a meandering inductor provided on the surface of a base substrate, and a zero-ohm resistor mounted on two parallel line portions with one parallel line portion provided therebetween. The parallel line portions of the meandering ind... | 12/05/2006 |
| 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 |
| 7142068 | Voltage controlled oscillator small in reduction of inductance and Q The voltage controlled oscillator contains a circuit board having a laminate of a plurality of insulating plates, a wiring pattern formed on a surface of the circuit board, an electronic part mounted on the surface of the circuit board, a resonance strip line provid... | 11/28/2006 |
| 7142067 | Voltage-controlled oscillator, composite module, and communication apparatus A voltage controlled oscillator includes a resonant circuit having a choke coil, a variable-capacitance diode, coupling capacitors, a resonant capacitor, a resonator, and a bypass capacitor. An amplifying circuit includes a buffer amplifying transistor, an oscillati... | 11/28/2006 |
| 7133646 | Multimode and multiband MIMO transceiver of W-CDMA, WLAN and UWB communications A multimode and multiband MIMO transceiver of W-CDMA, WLAN and UWB communication is disclosed. The transceiver uses four antennas at the transmitter and the receiver. The W-CDMA has a multicarrier for 12 channels with a total of 15 MHz frequency bandwidth and is abl... | 11/07/2006 |
| 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 |
| 7109811 | Voltage controlled oscillator, composite module, and communication apparatus A resonant circuit includes a choke coil, a variable-capacitance diode, coupling capacitors, a resonant capacitor, a resonator defining an inductor element, and a bypass capacitor. An amplifying circuit includes a buffer amplifying transistor, an oscillating transis... | 09/19/2006 |
| 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 |
| 7068115 | Monolithic microwave integrated circuit voltage controlled coupled feedback oscillator A feedback oscillator device formed with an integrated circuit having a semiconductor material substrate on a ground plane. The circuit has an amplifier having an input and an output is provided at least in part on said semiconductor material substrate. A directiona... | 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 |
| 7049897 | High frequency band oscillator In an oscillator used in a high frequency band such as the microwave band, the millimeter wave band, etc., an oscillation element and circuit components such as a resonator coupled to the oscillation element, etc., are provided inside a casing, the oscillation eleme... | 05/23/2006 |
| 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 |
| 7005932 | Electronic device having adjustable VCO A circuit board having a VCO that can be adjusted during manufacturing is disclosed. The VCO has a resonating circuit, a coupling circuit, and an oscillating circuit. The coupling circuit and the oscillating circuit have adjustable capacitors composed of micro-strip... | 02/28/2006 |
| 6980061 | Voltage-controlled oscillator The problem of interference and coupling between circuits that arises in reducing the size of a voltage-controlled oscillator by using low temperature co-fired ceramics (LTCC) substrate technology is alleviated. A voltage-controlled oscillator includes an amplifier ... | 12/27/2005 |
| 6967540 | Synthesizers incorporating parascan TM varactors A synthesizer incorporating voltage tunable capacitors, comprising at least one resonator coupled into a base circuit of a bipolar transistor, the at least one resonator including at least one voltage tunable capacitor; the bipolar transistor including a collector w... | 11/22/2005 |
| 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 |
| 6949982 | Voltage controlled oscillators incorporating parascan R varactors A voltage controlled oscillator incorporating voltage tunable capactiors, comprising at least one resonator coupled into a base circuit of a bipolar transistor, said at least one resonator including at least one voltage tunable capacitor. The bipolar transistor incl... | 09/27/2005 |
| 6924707 | Resonator A resonator minimizes degradation of the Q factor, accurately adjusts the frequency, and reduces the size and profile thereof. A voltage controlled oscillator including such a resonator includes a multilayer substrate. The multilayer substrate includes a first groun... | 08/02/2005 |
