1625 results about "Spiral coil" patented technology

Embodiments of the invention relate to a method and system for transferring power wirelessly to electronic devices. The system can utilize magnetic coupling between two coils at close proximity to transfer sufficient power to charge an electronic device. Embodiments of the invention pertain to an array of spiral coils that can be used to transmit power for transfer to receiver coils. Potential applications of this technology include charging consumer electronic devices (cell phones, laptops, PDAs, etc), developing hermetically sealed devices for extreme environments, and less invasive transcutaneous energy transfer (TET) systems. Various embodiments of the subject system can be referred to as PowerPad system. Embodiments can incorporate one or more of the following: planar inductors, PCB transformers, and very high frequency power supplies. Embodiments of the invention also pertain to planar inductors having characteristics that allow the production of even magnetic field, as well as systems that incorporate such planar inductors.

A system and method for rapid atomic layer etching (ALET) including a pulsed plasma source, with a spiral coil electrode, a cooled Faraday shield, a counter electrode disposed at the top of the tube, a gas inlet and a reaction chamber including a substrate support and a boundary electrode. The method includes positioning an etchable substrate in a plasma etching chamber, forming a product layer on the surface of the substrate, removing a portion of the product layer by pulsing a plasma source, then repeating the steps of forming a product layer and removing a portion of the product layer to form an etched substrate.

An integrated scaffold for bone tissue engineering has a tubular outer shell and a spiral scaffold made of a porous sheet. The spiral scaffold is formed such that the porous sheet defines a series of spiral coils with gaps of controlled width between the coils to provide an open geometry for enhanced cell growth. The spiral scaffold resides within the bore of the shell and is integrated with the shell to fix the geometry of the spiral scaffold. Nanofibers may be deposited on the porous sheet to enhance cell penetration into the spiral scaffold. The spiral scaffold may have alternating layers of polymer and ceramic on the porous sheet that have been built up using a layer-by-layer method. The spiral scaffold may be seeded with cells by growing a cell sheet and placing the cell sheet on the porous sheet before it is rolled.

A plasma reactor has an overhead multiple coil antennas including a parallel spiral coil antenna and symmetric and radial RF feeds and cylindrical RF shielding around the symmetric and radial RF feeds. The radial RF feeds are symmetrically fed to the plasma source.

A base sheet 12 has a structure that stably couples a particular chip measuring 1 mm or less on paper with an antenna line by only disposing the chip and antenna line in such a manner that the chip and antenna line are close to each other, without electrically bringing the chip and antenna line into contact with each other. The base sheet 12 includes a chip 11 having a spiral coil 13 with at least one turn disposed on a surface of the chip, or inside the chip and near the surface thereof and an antenna line 14 having a conductor part 14A orbiting around the coil 13A of the chip 11 or directly over or directly below the coil 13A so that the conductor part is magnetically coupled with the coil 13A. This base sheet has a structure that stably couples even a chip measuring 1 mm or less on paper or the like with an antenna line by only disposing the chip and antenna line in such a manner that the chip and antenna line are close to each other, without physically bringing the chip and antenna line into contact with each other.

Spiral coils generate very powerful electromagnetic fields by operating with two different but simultaneous resonant behaviors. Quarter-wave resonance is established by adjusting the frequency (and wavelength) of a radiofrequency (RF) voltage source until the length of the spiral conductor is equal to ¼ of the wavelength of the alternating voltage. This generates an electromagnetic standing wave with at least one peak node and at least one null node. Inductive-capacitive (L / C) resonance is established by optimizing the thickness and width of the wire ribbon used to make the spiral coil. When inductance and capacitance are balanced, the current response will synchronize with the voltage input, creating in-phase behavior, minimal total impedance, and maximal power output. If two such coils are placed near each other, they will create an extremely powerful electromagnetic field between them, which can promote chemical and plasma reactions involving charged particles such as ions or plasma particles, possibly including nuclear fusion reactions.

A transmitter consists of a plurality of magnetic transmitters, each of which is substantially planar and made of a spiral shaped conductor. The result is a transmitter having a substantially uniform cross-sectional current density along the radial direction of the spiral from the center to the periphery. Near the plane of a given spiral, magnetic vectors produced by such a conductor arrangement have improved angular characteristics as compared to prior art systems. This results in a larger region with useful vector crossing angles and operation of the system is enhanced as compared to prior art techniques. The transmitters produce magnetic fields which have a monotonically increasing intensity as one approaches the center of the transmitter spiral from any given direction. This feature simplifies and increases the accuracy of sensor position determination. If desired, the turns of the spiral transmitter may become closer together as one goes from the periphery to the center thereof to thereby concentrate the magnetic field more centrally of the transmitter. Transmitters having one or two spiral coils are also contemplated.

Disclosed is an electronic apparatus (1) comprising a power receiving device (2) and an electronic apparatus main body (3). The power receiving device (2) comprises a power receiving coil (11) having a spiral coil, a rectifier (12) and a secondary battery (13). The electronic apparatus main body (3) comprises an electronic device (14) and a circuit board (15). A magnetic foil (16) is arranged in at least one position between the spiral coil (11) and the secondary battery (13), the rectifier (12), the electronic device (14) or the circuit board (15). The magnetic foil (16) has a value expressed as the product of the saturation flux density MS and the thickness t, namely Ms·t, of not less than 15.

A tag which uses radio frequency waves transmitted from a scanning device in order to identify an item to which the tag is attached or with which the tag is associated. The tag includes a first insulating layer having a top surface and a bottom surface, and resonant circuits formed on the first insulating layer. Each of the resonant circuits are formed on one of the top surface and the bottom surface of the first insulating layer and have a resonant frequency associated therewith. Each of the resonant circuits include capacitance and inductance elements. The capacitance and inductance elements include an inwardly spiralled coil connected to an outwardly spiralled coil. The tag is associated with a binary number established by a pattern of ones and zeros depending on each circuits' resonance or nonresonance, respectively.

An electronic apparatus (1) includes a power receiver (2) and an electronic apparatus main body (3). The power receiver (2) includes a power receiving coil (11) having a spiral coil, a rectifier (12) and a secondary battery (13). The electronic apparatus main body (3) includes an electronic device (14) and a circuit board (15). A magnetic foil (16) is arranged in at least one position between the spiral coil (11) and one of the secondary battery (13), the rectifier (12), the electronic device (14) and the circuit board (15).

A non-contact type power receiving apparatus including: a power receiving coil having a spiral coil; a rectifier; a secondary battery; an electronic device operated by being supplied with direct voltage from the secondary battery, wherein a composite magnetic body is provided to at least one portion between the secondary battery and the spiral coil, and a portion between the electronic device and the spiral coil. The composite magnetic body includes at least first and other layers of magnetic sheets through an insulating layer in which when a relative magnetic permeability of the first magnetic sheet provided to a side of the spiral coil is μd, a thickness of the first magnetic sheet is tu, an average relative magnetic permeability of the other magnetic sheets other than the first magnetic sheet is μu, and a total thickness of the other magnetic sheets is tu, the composite magnetic body satisfies the following relations: μd·td≦60 [mm]; and μu·tu≧100 [mm].

A flexible tube for an endoscope includes a spiral coil 11 as the innermost layer and a jacket 13 that is formed by applying a melt of a jacket material 1 and then curing it, in which the jacket material 1 has been allowed to penetrate through the gaps between adjacent turns of the innermost spiral coil 11 to reach the portion of its inner surface.

An electronic apparatus (1) includes a power receiving device (2) and an electronic apparatus main body (3). The power receiving device (2) includes a power receiving coil (11) having a spiral coil, a rectifier (12), and a secondary battery (13). The electronic apparatus main body (3) includes an electronic device (14) and a circuit board (15). A magnetic foil (16) is arranged in at least one position between the spiral coil (11) and the secondary battery (13), the rectifier (12), the electronic device (14), or the circuit board (15). The magnetic foil (16) has a μr′·t value expressed as the product of the real component μr′ of relative permeability and the plate thickness t of 30000 or larger.

An electromagnetic component including a multi-layer, spiral coil structure embedded in a molded body is disclosed. Each layer of the coil structure makes approximately one and a quarter turns of a winding. Each layer of the coil structure has a loose middle segment, two slim end segments overlapping each other with a spacing therebetween, and tapered neck segments respectively connecting the loose middle segment with the two slim end segments.

The invention discloses a wireless electric energy transmission system based on double-layer two-way spiral coils in the technical field of wireless electric energy transmission. The problem that in the close range energy transmission process of the wireless electric energy transmission system, the transmission efficiency of the system is low due to the influence of frequency splitting is mainly solved. Based on a magnetic coupling resonance wireless electric energy transmission system of the Massachusetts Institute of Technology, the double-layer two-way wound transmitting coils are designed, namely an inner layer coil with the same number and pitch of turns is wound in the opposite direction in the inner space of an original single-layer one-way wound transmitting coil, because the winding direction of the inner layer coil is opposite to that of the original coil, so that the intensity of the coupling coefficient is reduced, the influence on the transmission efficiency of the system of the frequency splitting in the close range energy transmission process is reduced, the wireless electric energy transmission system can break away from a frequency splitting area within a shorter distance to achieve the critical coupling state, and the energy transmission efficiency of the wireless electric energy transmission system working in the close range frequency splitting area is improved.

A laminated inductor includes ceramic sheets provided with spiral coil conductor patterns of one turn, ceramic sheets provided with spiral coil conductor patterns of two turns, and ceramic sheets provided with lead-out conductor patterns, which are laminated together. The coil conductor patterns are successively electrically connected in series in regular order through via holes. The via holes are disposed at fixed locations in the ceramic sheets.

The invention pertains to the design, arrangement and fabrication of arrays of electromagnetic acoustic transducers (EMATs) for detection and monitoring of defects in metal components while they are being used in service. Emphasis is placed on printed circuit sensor coil designs that are attached to and covered with thin, flexible and insulating substrates. This laminated construction with additional means for electrical and thermal insulation, radiation heat shielding and simple cooling provides for consistent and reliable EMAT performance in monitoring components at elevated temperatures. The arrays include circular spiral coils, elongated spiral (racetrack) coils and rectangular spiral coils. Also described are arrays of dual-rectangular (butterfly) coils, meander coils and trapezoidal coils. Various assembly designs for the attachment of bias magnets are described.

A semiconductor device increases the efficiency of the inductor having a three-dimensional spiral coil and increases the inductance value without requiring any special steps. The semiconductor device includes semiconductor elements and first, second and third metal wire layers to be used for the configuration of the semiconductor elements, a core disposed on the second metal wire layer, and a coil wherein a plurality of pieces of the first metal wire layer and a plurality of pieces of the third metal wire layer connected to the pieces via the connection holes are connected in series to define a spiral surrounding the core.

An RFID tag comprises a semiconductor chip storing therein information of an object to be discriminated and carrying out radio communication with a reader / writer device; and an antenna coil provided with a magnetic core member and connected electrically to the semiconductor chip. The semiconductor chip and the magnetic core member are wrapped by an insulation sheet carrying an interconnection pattern connecting a pad of the semiconductor chip and the antenna coil electrically and plural coil patterns on one side thereof. The plural coil patterns includes bar-shaped conductor patterns formed obliquely to the magnetic core member, each of the bar-shaped conductor patterns having an end connected to an end of an adjacent coil pattern, the bar-shaped conductor patterns thereby forming together a spiral coil around the magnetic core member. The coil patterns being connected with each other at a part where the coil patterns overlap with each other.

A recharging system for a rechargeable battery in an electronic device includes a receiver and a power supply. The receiver is fixed to a surface of a casing of the electronic device. The receiver includes a receiving coil connected to the rechargeable battery. The receiving coil is a planar spiral coil substantially parallel to the surface of the casing of the electronic device. The power supply includes a base and a source coil attached to a surface of the base corresponding to the receiving coil, and the source coil is a planar spiral coil and capable of magnetically coupling to the receiving coil of the receiver.

A transformer is provided. The transformer includes a first electrical conductor, a second electrical conductor, a circuit board and a core set. The first electrical conductor has a through hole and the second electrical conductor is electromagnetically coupled with the first electrical conductor and includes a plurality of spiral coils formed by winding a single conductive wire, each spiral coil having a through hole. The circuit board has a through hole. The core set penetrates the through hole of the first electrical conductor, the through hole of the circuit board, and the through holes of the plurality of spiral coils of the second electrical conductor, and covers at least one portion of the first electrical conductor and the second electrical conductor.

The present invention comprises a high-transition-temperature superconducting device having low-magnitude low-frequency noise-characteristics in magnetic fields comprising superconducting films wherein the films have a width that is less than or equal to a critical width, wC, which depends on an ambient magnetic field. For operation in the Earth's magnetic field, the critical width is about 6 micrometers ( mu m). When made with film widths of about 4 mu m an inventive high transition-temperature, superconducting quantum interference device (SQUID) excluded magnetic flux vortices up to a threshold ambient magnetic field of about 100 microTesla ( mu T). SQUIDs were fabricated having several different film strip patterns. When the film strip width was kept at about 4 mu m, the SQUIDs exhibited essentially no increase in low-frequency noise, even when cooled in static magnetic fields of magnitude up to 100 mu T. Furthermore, the mutual inductance between the inventive devices and a seven-turn spiral coil was at least 85% of that for inductive coupling to a conventional SQUID.

A guidewire assembly including a repeatably inflatable occlusive balloon on a guidewire ensheathed in a close wound spiral coil. The guidewire assembly is used as part of a guidewire occlusion system.

Suspension inductor devices are provided. A suspension inductor device includes a dielectric substrate and a suspension induction coil. The suspension induction coil includes an input end disposed on the dielectric substrate. A spiral coil is wound from the dielectric substrate to an interconnection. The interconnection is disposed in the spiral coil and connects the input end and the spiral coil. An output end is disposed on the dielectric substrate and adjacent to the input end.

The cooling-heating air-conditioning hot water three-purpose machine is characterized by that on the original air-conditioner a countercurrent water-cooling heat exchanger and a three-way two-position reversing electromagnetic valve formed from electromagnetic auxiliary valve and pneuamtic main valve are added, and two energy-saving water-heating control modes of refrigeration mode and heating mode are increased, and a double-loop two-way throttle mechanism also can be adopted or the spiral coil tube-in-tube water-cooling heat-exchanger can be pdlaced in the hot water storage tank, so that said invented three-purpose machine can be used throughout the year, and possesses several functions of refrigeration, heating and providing cold and hot water.

A plasma processing system for plasma processing of substrates such as semiconductor wafers. The system includes a plasma processing chamber, a substrate support for supporting a substrate within the processing chamber, a dielectric member having an interior surface facing the substrate support, the dielectric member forming a wall of the processing chamber, a gas injector fixed to, part of or removably mounted in an opening in the dielectric window, the gas injector including a plurality of gas outlets supplying process gas into the chamber, and an RF energy source such as a planar or non-planar spiral coil which inductively couples RF energy through the dielectric member and into the chamber to energize the process gas into a plasma state. The arrangement permits modification of gas delivery arrangements to meet the needs of a particular processing regime. In addition, compared to consumable showerhead arrangements, the use of a removably mounted gas injector can be replaced more easily and economically.

The invention discloses a nuclear magnetic resonance sensor used for the nondestructive aging resonance of an umbrella skirt of a composite insulator. The sensor comprises a permanent magnet structure and a plane radio-frequency coil, wherein the permanent magnet structure mainly consists of two cylindrical permanent magnet sheets of same specification, the two cylindrical permanent magnet sheets are oppositely and coaxially arranged, and the permanent magnet structure is used for producing a static state main field B0; and the permanent magnet structure is provided with a slide mechanism, so that the distance between the permanent magnet sheets can be adjusted so as to adapt to umbrella skirts of different thickness. The plane radio-frequency coil is formed by two spiral coils which are connected in series on a plane according to the reverse direction of the magnetic field, and the plane radio-frequency coil is used for generating radio-frequency magnetic field B1 orthometric with the main magnetic field in a target region, and detecting return signals produced by a sample to be tested. During the aging detection of the umbrella skirt of the composite insulator, the slide mechanism is adjusted to enable the sensor to clamp the umbrella skirt to be tested, so that the transverse relaxation time T2 of the umbrella skirt can be measured, and further, the aging degree of the umbrella skirt can be judged according to the transverse relaxation time T2. The open-type nuclear magnetic resonance sensor has the advantages of small volume, light weight, and convenience in engineering field detection.

A tunable multi-zone injection system for a plasma processing system for plasma processing of substrates such as semiconductor wafers. The system includes a plasma processing chamber, a substrate support for supporting a substrate within the processing chamber, a dielectric member having an interior surface facing the substrate support, the dielectric member forming a wall of the processing chamber, a gas injector fixed to part of or removably mounted in an opening in the dielectric window, the gas injector including a plurality of gas outlets supplying process gas at adjustable flow rates to multiple zones of the chamber, and an RF energy source such as a planar or non-planar spiral coil which inductively couples RF energy through the dielectric member and into the chamber to energize the process gas into a plasma state. The injector can include an on-axis outlet supplying process gas at a first flow rate to a central zone and off-axis outlets supplying the same process gas at a second flow rate to an annular zone surrounding the central zone. The arrangement permits modification of gas delivery to meet the needs of a particular processing regime by allowing independent adjustment of the gas flow to multiple zones in the chamber. In addition, compared to consumable showerhead arrangements, a removably mounted gas injector can be replaced more easily and economically.

The conductor pattern of a magnetic head coil includes a spiral coil pattern to which a current can be supplied to flow around the magnetic field generation center, and a conductor pattern which is formed outside the coil pattern and cannot receive a current so as to flow around the magnetic field generation center. Letting S be the distance from the outer edge of the outermost periphery of the coil pattern, and P be the pitch, a conductor occupation ratio R of a conductor pattern formed outside the coil pattern simultaneously satisfies inequalities 1 to 3, and the conductor pattern does not form any closed loop surrounding the coil pattern in a first region A1 given by inequality 1:Inequality 1: 0<=R<=0.3 in the first region A1 where0<=S<=1.5PInequality 2: 0<=R<=0.8 in a second region A2 where1.5P<S<=6.0PInequality 3: 0.3<R<=1 in a third region A3 where6.0P<S