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...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 7583167 | High frequency magnetic thin film filter A layered microstrip device is described, in which at least two layers of different high internal field/high resonance frequency materials serve as the active elements of the device. The device is designed to filter ranges of high frequency electromagnetic waves, an... | 09/01/2009 |
| 7528688 | Ferrite-piezoelectric microwave devices Devices for modification of a microwave signal using a magnetically saturated ferrite magnetoelectric device with electrical control are disclosed. The device is useful for microwave resonators, band pass filters, delay lines and phase shifters. ... | 05/05/2009 |
| 7385469 | Integrated microelectronics component for filtering electromagnetic noise and radio frequency transmission circuit comprising same The integrated microelectronics component comprises an electric conductor forming a transmission line element for a radio frequency electromagnetic wave. This electric conductor is surrounded at least partially by a preferably closed magnetic circuit, formed at leas... | 06/10/2008 |
| 7378926 | Single crystalline magnetic garnet and YIG device A YIG device comprises a resonator including a YIG element 16 of a single crystalline yttrium iron garnet having a part of yttrium substituted with gadolinium, which is formed in a spherical shape, and magnetic field applying means 20 for applying a ma... | 05/27/2008 |
| 7276910 | Compact self-tuned electrical resonator for buried object locator applications A self-tuning resonator for use in a transmitter apparatus for inducing alternating currents in a buried conductor. The resonator is dynamically tuned at frequencies below 500 kHz by exploiting the inherent voltage-variability of net capacitance in multilayer cerami... | 10/02/2007 |
| 7205869 | Magnetostatic wave device based on thin metal films, method for making same and application to devices for processing microwave signals The integrated magnetostatic wave device comprises a substrate (1), a conductive ferromagnetic thin film (2) of thickness lying in the range about 250 nm to 450 nm and preferably being equal to about 300 nm, said thin film (2) being deposited on... | 04/17/2007 |
| 7151423 | Demultiplexer and multiplexer A demultiplexer receives a multiplexed signal, in which a plurality of electrical signals with mutually different frequencies are multiplexed together, and divides the multiplexed signal into the electrical signals. The demultiplexer includes at least one line for p... | 12/19/2006 |
| 7116186 | Dual-band bandpass filter A dual-band bandpass filter having a first pass band and a second pass band respectively corresponding to a first frequency and a second frequency. The filter includes a first pair of resonators, a second pair of resonators and a first coupling element. The first pa... | 10/03/2006 |
| 7091801 | Micromechanical resonator having a metal layer surrounding a cylinder formed in a base layer The invention relates to a micromechanical resonator having a bondable resonance body and a method for fabricating a micromechanical resonator for semiconductor components. The invention provides that the resonator (26) is composed successively of a fi... | 08/15/2006 |
| 7023209 | Method and apparatus for magnetic resonance imaging and spectroscopy using microstrip transmission line coils Apparatus and method for MRI imaging using a coil constructed of microstrip transmission line (MTL coil) are disclosed. In one method, a target is positioned to be imaged within the field of a main magnetic field of a magnet resonance imaging (MRI) system, a MTL coi... | 04/04/2006 |
| 6992539 | Method and apparatus of obtaining balanced phase shift Disclosed is a method and an apparatus enabling operation of balanced phase shifts providing uniformity that the insertion loss do not show variation with the derived angles in phase shift. The invention incorporates a resonator supporting nonreciprocal wave propaga... | 01/31/2006 |
| 6909344 | Band switchable filter A ferro-electric filter and method of tuning same. The filter includes a switch for switching between quarter wave resonator and half wave resonator modes. The filter also includes a ferro-electric component for tuning the resonant frequency. The method includes app... | 06/21/2005 |
| 6828790 | Magnetic resonance apparatus with excitation antennae system A magnetic resonance imaging system comprises an excitation antennae system (13,16) including several antennae for emitting an RF-excitation field [B1(t)]. An activation control unit (ACU) is coupled to the excitation antennae system to activate th... | 12/07/2004 |
| 6816038 | Magnetostatic wave device and disturbance wave eliminator A YIG film formed on a GGG substrate is separated by a stepwise groove for preparing YIG films having different intervals between end surfaces, and two YIG films resonating magnetostatic waves between the end surfaces having different intervals are coupled with each... | 11/09/2004 |
| 6806710 | Magnetic resonance antenna A magnetic resonance antenna has at least five antenna elements, each of, which extends essentially radially from an inner element beginning to at least one outer element end with respect to a center axis. The antenna elements are at least magnetically coupled with ... | 10/19/2004 |
| 6727775 | Ferrite crystal resonator coupling structure Single and multiple ferrite crystal resonator, oscillator, and filter coupling structures are disclosed. In one embodiment, a single ferrite crystal resonator coupling structure is configured as a single pole YIG-tuned-oscillator (YTO) coupling structure. The YTO co... | 04/27/2004 |
| 6727786 | Band switchable filter A ferro-electric filter and method of tuning same. The filter includes a switch for switching between quarter wave resonator and half wave resonator modes. The filter also includes a ferro-electric component for tuning the resonant frequency. The method includes app... | 04/27/2004 |
| 6664873 | Tunable resonator A tunable resonator is provided. The resonator includes a housing having a cavity. A resonator body is disposed adjacent to a first surface within the cavity. A gap is formed between the resonator body and the first surface. The resonator is tuned by cont... | 12/16/2003 |
| 6630873 | Magnetostatic wave filter A magnetostatic wave filter that includes a ferromagnetic substance stacked on one side of a dielectric substrate, one side of which is grounded, and the filter includes an input section having an input transfer line and an input energy transformer for ca... | 10/07/2003 |
| 6563405 | Multi-resonator ferrite microstrip coupling filter A micro-resonator ferrite microstrip coupling filter that has reduced susceptibility to variations in the manufacturing process, as well as from changes due to mechanical or environmental stress, and allows for an assembly process that can be easily autom... | 05/13/2003 |
| 6504459 | Planar coupling of spherical ferrites A spherical resonator device includes a resonant sphere around which transducers for electrical coupling are metallized layers on a flat surface shaped to provide exposure of a sphere to a quasi constant field. In particular, the pattern comprises a trans... | 01/07/2003 |
| 6501971 | Magnetic ferrite microwave resonator frequency adjuster and tunable filter A magnetic ferrite microwave resonator frequency tunable filter and method for tuning a filter having both a resonator portion and a tuning portion. The resonator portion has an input for receiving an electromagnetic signal and an output for emitting an e... | 12/31/2002 |
| 6483393 | Method and apparatus of obtaining phase shift using nonreciprocal resonator Disclosed is a method and two devices for obtaining phase shifts by using a non-reciprocal resonator supporting single-mode operation. As such, wave propagation in the resonator is unambiguous in phase, allowing the phase to be coupled in or out at differ... | 11/19/2002 |
| 6480078 | Resonating apparatus in a dielectric substrate A resonating apparatus includes a dielectric resonator on a dielectric supporting substrate, a fluid dielectric membrane which overspreads the dielectric resonator, and a microstrip line which is arranged in the fluid substrate membrane so that it is coup... | 11/12/2002 |
| 6414564 | Distributed constant element using a magnetic thin film The present invention is directed to a magnetic thin-film device whose operating frequency band ranges from several millihertz (MHz) to several gigahertz (GHz) and which is used as an inductor for a switching power supply, a noise filter, a reception circ... | 07/02/2002 |
| 6353375 | Magnetostatic wave device A magnetostatic wave device including a ferrimagnetic film for exciting and propagating magnetostatic waves and a magnetic field generator for applying a magnetic field to the ferrimagnetic film. The magnetic field generator includes a permanent magnet an... | 03/05/2002 |
| 6348846 | Filter circuit including system for tuning resonant structures to change resonant frequencies thereof A structure (and method) for tuning a resonant structure, includes a resonant structure including either a predetermined material coating provided on either a bar or a cantilever, or a lightly doped single crystal semiconductor material, and a circuit for... | 02/19/2002 |
| 6348840 | Method of manufacturing a YIG oscillator A variable-tuned type YIG oscillator accompanied with substantially no mechanical variations in the resonance circuit and a method of manufacturing the same are provided. An amplifier element, electrode, circuit pattern and others of the oscillator circui... | 02/19/2002 |
| 6259331 | YIG oscillator and method of manufacturing the same A variable-tuned type YIG oscillator accompanied with substantially no mechanical variations in the resonance circuit and a method of manufacturing the same are provided. An amplifier element, electrode, circuit pattern and others of the oscillator circui... | 07/10/2001 |
| 6255918 | Microwave ferrite resonator mounting structure having reduced mechanical vibration sensitivity A coupling structure for a ferrite-based resonator comprises a short, stiff mounting rod and ferrite sphere are mechanically coupled to a substrate that provides support for a stiff coupling loop. The structure reduces differential movement between the sp... | 07/03/2001 |
| 6141571 | Magnetically tunable ferrite microwave devices In a ferrite switchable microwave device, a magnetic structure is formed in a nearly continuous closed-loop configuration of a single crystal material, or of a material exhibiting the magnetic properties of single crystal materials (quasi-single crystal m... | 10/31/2000 |
| 6121852 | Distributed constant element using a magnetic thin film The present invention is directed to a magnetic thin-film device whose operating frequency band ranges from several millihertz (MHz) to several gigahertz (GHz) and which is used as an inductor for a switching power supply, a noise filter, a reception circ... | 09/19/2000 |
| 6114929 | Magnetostatic wave device with specified distances between magnetic garnet film and ground conductors A magnetostatic wave device including a magnetic garnet film which excites and propagates magnetostatic waves upon receiving electromagnetic waves, a magnetic field generator which applies a magnetic field to the magnetic garnet film, first and second gro... | 09/05/2000 |
| 6094588 | Rapidly tunable, high-temperature superconductor, microwave filter apparatus and method and radar receiver employing such filter in a simplified configuration with full dynamic range A narrow bandwidth (1 to >100 MHz) HTS microwave filter (30 or 50) is described which is tunable over a moderate frequency range (100 to >1000 MHz at X-band). The low loss ( | 07/25/2000 |
| 6091313 | Magnetostatic wave device including magnetic garnet layer having an inclined side face For patterning a magnetic garnet layer formed on the surface of a non-magnetic garnet substrate, the magnetic garnet layer, an intermediate layer and a resist layer are formed in this order from the substrate side, the intermediate layer and the resist la... | 07/18/2000 |
| 6078223 | Discriminator stabilized superconductor/ferroelectric thin film local oscillator A tunable local oscillator (10) with a tunable circuit (12) that includes a resonator (16) and a transistor (14) as an active element for oscillation. Tuning of the circuit (12) is achieved with an externally applied dc bias (22, 24) across coupled lines ... | 06/20/2000 |
| 6052042 | Magnetostatic wave device The magnetostatic wave device comprises a single crystal substrate made of Gd3 Ga5 O12, a magnetic garnet single crystal film provided on the single crystal substrate and at least one transducer provided on the magnetic ga... | 04/18/2000 |
| 5959513 | Microwave ferrite resonator mounting structure having reduced mechanical vibration sensitivity A coupling structure for a ferrite-based resonator comprises a short, stiff mounting rod and ferrite sphere are mechanically coupled to a substrate that provides support for a stiff coupling loop. The structure reduces differential movement between the sp... | 09/28/1999 |
| 5894248 | Controlled loop gain YIG tuned oscillator circuit A YIG oscillator circuit including a closed loop control system which maximizes loop gain during start-up and minimizes loop gain after start-up to minimize gain compression. In one embodiment the closed loop control circuit includes a PIN diode coupled b... | 04/13/1999 |
| 5793268 | Multi-octave tunable permanent magnet ferrite resonator A ferrite resonating device operative for example as an oscillator or filter includes a mechanism for mechanically varying the position of a permanent magnet while maintaining a fixed main gap in which a ferrite resonating element is placed so that wide t... | 08/11/1998 |
