Discharge Device Load With Distributed Parameter-type Transmission Line (e.g., Wave-guide, Coaxial Cable) Patents (Class 315/39)
  • Patent number: 10181388
    Abstract: A crossed field device for generating electromagnetic emissions includes an anode having a first slow-wave structure having a plurality of first vanes separated by cavities formed therebetween and a second slow-wave structure having a plurality of second vanes separated by cavities formed therebetween. At least one of the first vanes is laterally aligned with one of the second vanes. The first vanes are offset from the second vanes by an offset distance so that at least one of the first vanes is not laterally aligned with a second vane and at least one of the second vanes is not laterally aligned with a first vane. The device further includes a cathode disposed in a space located between first and second vanes. A magnetic element generates a magnetic field (B), which is oriented orthogonally to an electric field (E) formed by the anode and cathode to generate EM emissions.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: January 15, 2019
    Assignee: THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE
    Inventor: Brad W. Hoff
  • Patent number: 10068738
    Abstract: Provided are a traveling wave tube and a high-frequency circuit system such that the product life span of the traveling wave tube operating in multiple modes can be extended while variations in gain and amplification efficiency that accompany switching of the operation modes can be suppressed. The traveling wave tube comprises: an electron gun equipped with a cathode that releases electrons, and a heater that provides the cathode with heat energy for releasing the electrons; a helix causing an RF signal to interact with an electron beam formed from the electrons released by the electron gun; a collector for catching the electron beam emitted by the helix; an anode whereby the electrons released from the electron gun are guided into the helix; and a magnetic field application device for generating a magnetic field in order to change the diameter of the electron beam, said magnetic field application device being supplied with electric power for generating the magnetic field from the outside.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: September 4, 2018
    Assignee: NEC NETWORK AND SENSOR SYSTEMS, LTD.
    Inventor: Takatsugu Munehiro
  • Patent number: 10021774
    Abstract: A system has a linear accelerator, ion pump and a compensating magnet. The ion pump includes an ion pump magnet position, an ion pump magnet shape, an ion pump magnet orientation, and an ion pump magnet magnetic field profile. The compensating magnet has a position, a shape, an orientation, and a magnetic field profile, where at least one of the position, shape, orientation, and magnetic field profile of the compensating magnet reduce at least one component of a magnetic field in the linear accelerator resulting from the ion pump magnet.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: July 10, 2018
    Assignee: ViewRay Technologies, Inc.
    Inventors: Shmaryu M. Shvartsman, James F. Dempsey
  • Patent number: 9841448
    Abstract: The present invention pertains to a resonant cavity system, more specifically, a resonant system for measuring the dielectric constant of a sample and its method of use. The system and method provide for holding sample materials, which can be in solid, liquid, or powder form, and for reducing the size of the requisite cavity for measurement. The construction incorporates waveguide flange connectors to seal the electromagnetic cavity, which facilitates the measurement of low-loss materials. The design for signal input enables the use of standard calibration techniques and measurement.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: December 12, 2017
    Assignee: Battelle Memorial Institute
    Inventors: James C. Weatherall, Jeffrey Barber, Barry T. Smith
  • Patent number: 9831066
    Abstract: A plasma applicator includes a plasma discharge tube and a microwave cavity at least partially surrounding a portion of the plasma discharge tube. Microwave energy is coupled to the microwave cavity via a coupling iris. At least two orthogonal dimensions of the microwave cavity are selected such that the microwave energy in the microwave cavity propagates in a transverse electric (TE) mode. Primary electric fields generated from the microwave energy combine with an evanescent electric field generated from the coupling iris, such that a combined electric field in the microwave cavity is substantially uniform along the longitudinal axis of the plasma discharge tube. A plurality of radial microwave chokes is disposed over an exterior of the plasma discharge tube. Positions of the microwave chokes are such that microwave energy propagating in the TE mode and a transverse electric magnetic (TEM) mode is attenuated.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: November 28, 2017
    Assignee: MKS Instruments, Inc.
    Inventors: Mohammad Kamarehi, Chaolin Hu, Olivia Keller
  • Patent number: 9715988
    Abstract: A cylindrical waveguide with a mode converter transforms a whispering gallery mode from a gyrotron cylindrical waveguide with a helical cut launch edge to a quasi-Gaussian beam suitable for conveyance through a corrugated waveguide. This quasi-Gaussian beam is radiated away from the waveguide using a spiral cut launch edge, which is in close proximity to a first mode converting reflector. The first mode converting reflector is coupled to a second mode converting reflector which provides an output free-space HE11 mode wave suitable for direct coupling into a corrugated waveguide. The radiated beam produced at the output of the second mode converting reflector is substantially circular.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: July 25, 2017
    Assignee: CALABAZAS CREEK RESEARCH, INC.
    Inventor: Jeffrey M. Neilson
  • Patent number: 9580808
    Abstract: The invention relates to an apparatus for performing a plasma chemical vapor deposition process. The apparatus comprises a mainly cylindrical resonator being provided with an outer cylindrical wall enclosing a resonant cavity extending in a circumferential direction around a cylindrical axis. The resonator is further provided with side wall portions bounding the resonant cavity in the cylindrical direction, and with a slit configuration extending in a circumferential direction around the cylindrical axis providing access from the resonant cavity radially inwardly. Further, the slit configuration includes slit sections that are mutually offset in the cylindrical direction.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: February 28, 2017
    Assignee: Draka Comteq B.V.
    Inventors: Igor Milicevic, Mattheus Jacobus Nicolaas Van Stralen, Johannes Antoon Hartsuiker
  • Patent number: 9408287
    Abstract: A plasma actuator system includes a first electrode having a first slit formed in a first peripheral section of the first electrode. The first slit directs flow of a gaseous medium along a radial direction of the first electrode. Further, the plasma actuator system includes a second electrode coupled to the first electrode and is disposed concentrically around the first electrode. The second electrode includes a second slit formed in a second peripheral section for directing flow of the gaseous medium along the radial direction. Further, the system includes a power source coupled to the first and second electrode for supplying electric power to the electrodes for ionizing gaseous medium to generate plasma.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: August 2, 2016
    Assignee: General Electric Company
    Inventors: Dmytro Floriyovych Opaits, Seyed Gholamali Saddoughi
  • Patent number: 9396924
    Abstract: An electrodeless, microwave lamp has a magnetron as a microwave source and an excitable material lucent crucible in whose excitable material a plasma is established. For coupling microwaves from the magnetron into the crucible, an air wave guide coupling circuit is provided, with an output of the magnetron as an input at one quarter lambda from one end and an output at one quarter from the other end as an input to a connection to the crucible.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: July 19, 2016
    Assignee: Ceravision Limited
    Inventor: Andrew Simon Neate
  • Patent number: 9318296
    Abstract: A cathode of a magnetron having a radial extension to accommodate the cathode terminals is supported by arms which have a greater diameter over the region in which they are supported in the glass thimble than over the region of the free ends. This shifts any vibrations to a higher frequency band, which is less liable to be excited in the event the magnetron is moved rapidly as in a linac used for radiotherapy purposes.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: April 19, 2016
    Assignee: E2V Technologies (UK) Limited
    Inventors: David Bernard Fox, Timothy Peter Fox, Scott Williams
  • Patent number: 9305763
    Abstract: A lighting apparatus having a magnetron configured to generate microwaves, a waveguide including a wave guide space configured to introduce and guide the microwaves and an aperture to discharge the microwaves, a resonator to which the microwaves are transmitted through the aperture, and a bulb located in the resonator, the bulb encapsulating a light emitting material and configured to emit light based on the transmitted microwaves is provided. The apparatus also includes a reflective member or optical member located in the resonator such that light emitted from the bulb towards the aperture is reflected away from the aperture.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: April 5, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Donghun Kim, Hyunjung Kim, Junsung Kim
  • Patent number: 9269521
    Abstract: In some aspects, a micro-plasma device comprises a plasma gas enclosure containing at least one plasma gas, and a plurality of electrodes interfaced with the plasma gas enclosure. In other aspects, a micro-plasma circuitry apparatus comprises a first layer having a cavity formed therein and a second layer having a circuit formed therein. The circuit includes a micro-plasma circuit (“MPC”) that includes one or more micro-plasma devices (“MPDs”). The first layer of the circuit is bonded to the second layer of the circuit thereby forming an enclosure that contains at least one plasma gas. An excitation voltage is applied to a drain electrode of the MPDs to generate a conductive plasma path between the drain electrode and a source electrode.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: February 23, 2016
    Assignee: UNIVERSITY OF UTAH RESEARCH FOUNDATION
    Inventor: Massood Tabib-Azar
  • Patent number: 9252000
    Abstract: A microwave waveguide apparatus for generating plasma includes a waveguide which has first and second ends and propagates microwave from input end such that the microwave propagates from the first end to the second end, a circulator device having a first port, a second port coupled to the first end, and a third port coupled to the second end, the circulator device being structured such that the microwave is received at the first port, propagates from the second port to the first end, is received at the third port from the second end and is returned toward the input end, and a matching device which is interposed between the input end and the circulator device and reflects part of the microwave received at the third port and returned toward the input end to the first port. The waveguide has a slot-hole extending along the microwave propagation direction in the waveguide.
    Type: Grant
    Filed: January 21, 2014
    Date of Patent: February 2, 2016
    Assignees: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY, TOKYO ELECTRON LIMITED
    Inventors: Hitoshi Itoh, Yusuke Kubota, Hirotaka Toyoda, Masaru Hori
  • Patent number: 9236238
    Abstract: The present invention is directed to devices and methods for generating light with plasma lamps. More particularly, the present invention provides plasma lamps driven by a radio-frequency source without the use of electrodes inside the bulb and related methods. In a specific embodiment, a coaxial type coupling module is used to drive an electrodeless bulb. Merely by way of example, such plasma lamps can be applied to applications such as stadiums, security, parking lots, military and defense, street lighting, large and small buildings, vehicle headlamps, aircraft landing, bridges, warehouses, UV water treatment, agriculture, architectural lighting, stage lighting, medical illumination, microscopes, projectors and displays, any combination of these, and the like.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: January 12, 2016
    Assignee: Topanga USA, Inc.
    Inventors: Timothy J. Brockett, Mehran Matloubian
  • Patent number: 9230769
    Abstract: An LER LUWPL source luminaire having a magnetron heat conductingly mounted below a finned heat dissipater with a suspension eye. The magnetron is attached to a microwave transition and a lucent crucible. An imperforate cover extends down from the heat dissipater and is closed by a transparent screen, held by a molding. A generally square shaped molding supports a polished-sheet-metal reflector (having four triangular faces, pyramidally arranged, with a square base embodied by a rim supported on the top of the screen above the molding) extending back to the lucent crucible, with its reflective surfaces obliquely facing both the crucible and the screen for reflection of light from the crucible out of the luminaire via the screen. The faces converge to a virtual apex, on the central axis of the lucent crucible. This axis is coincident with the pyramid's normal axis from the apex to the center of the base.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: January 5, 2016
    Inventors: Paul Carpenter, Andrew Simon Neate, Tim Burnitt
  • Patent number: 9210794
    Abstract: There is provided a cyclotron including: a hollow yoke including first and second yoke portions facing each other and a side yoke portion connecting the first and second yoke portions to each other; first and second poles provided in the yoke so as to face each other; a coil disposed so as to surround the first and second poles; a D electrode provided between the first and second poles; a power source configured to supply electric power to the coil; a pole temperature detector configured to detect a temperature of at least one of the first and second poles; a yoke temperature detector configured to detect a temperature of the side yoke portion; and a control unit configured to control supply of electric power to the coil by the power source on the basis of detection results of the pole temperature detector and the yoke temperature detector.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: December 8, 2015
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventor: Toshinori Mitsumoto
  • Patent number: 9177751
    Abstract: A charged particle cancer therapy system is used to accelerate an anion, such a C?, and to convert the anion to a cation, such as C6+, through use of one or more electron extraction subsystems. A first example of an electron extraction subsystem is a hydrogen gas electron stripping system. A second example of an electron extraction subsystem is a carbon foil electron stripping system. The resultant cation is accelerated in a synchrotron, transported along a beam-line, and targeted to a tumor resulting in ablation of the tumor.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: November 3, 2015
    Inventor: Vladimir Balakin
  • Patent number: 9102523
    Abstract: The present invention includes an electron-discharge signal system with a supercharged electron source and process therefor. The system may be any signal modification unit such as a klystron, magnetron, traveling wave tube, etc. The system includes a heat-responsive electron source, supercharger, collector, a wave modification assembly, and a bleeder module. The electron source discharges an electron beam along a predetermined electron path. The supercharger heats the electron source upon absorption of electromagnetic radiation of a predetermined signal characteristic redirected by the system. The bleeder module redirects a portion of the system's output signal to the supercharger, which heats in response thereto. In other embodiments, the system may be operated entirely by electromagnetic radiation from a freestanding signal source.
    Type: Grant
    Filed: September 17, 2012
    Date of Patent: August 11, 2015
    Assignee: U.S. Photonics, Inc.
    Inventors: Jacob Conner, Ryan Giedd
  • Patent number: 9101042
    Abstract: A surface wave plasma source (SWPS) is disclosed, having an electromagnetic (EM) wave launcher including a slot antenna configured to couple EM energy in a desired EM wave mode to a plasma by generating a surface wave on a plasma surface of the SWPS adjacent the plasma. The SWPS also includes a dielectric window positioned below the slot antenna, having a lower surface and the plasma surface. The SWPS further includes an attenuation assembly disposed between the slot antenna and the plasma surface. The attenuation assembly includes a first fluid channel substantially aligned with a first arrangement of slots in the slot antenna, and is configured to receive a first flow of a first fluid at a first fluid temperature. The SWPS finally includes a power coupling system coupled to the EM wave launcher and configured to provide EM energy to the EM wave launcher for forming the plasma.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: August 4, 2015
    Assignee: Tokyo Electron Limited
    Inventors: Sergey A. Voronin, Alok Ranjan
  • Patent number: 9099291
    Abstract: A method for operating a plasma lamp apparatus. The method includes providing a resonator structure configured with a bulb comprising a fill mixture. The bulb is coupled to an output coupling element. The method applying an RF power source to a resonator structure configured with an input coupling element and coupling the RF power to the output coupling element configured with the input coupling element to cause the fill mixture to discharge electromagnetic radiation. The method includes adjusting a spatial distance or relative configuration between the input coupling element and the output coupling element during output of the electromagnetic radiation and causing a change in an impedance value of the resonator structure to initiate an adjustment of a power transfer from the RF power source to an output of the electromagnetic radiation.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: August 4, 2015
    Assignee: Topanga USA, Inc.
    Inventors: Dane I. Atol, Timothy J. Brockett
  • Patent number: 9082579
    Abstract: Electromagnetic wave oscillators each having a multi-tunnel and electromagnetic wave generating apparatuses including the electromagnetic wave oscillators are provided. The electromagnetic wave oscillator includes: a first waveguide which has a folded structure such that a path traveled by an electromagnetic wave through the first waveguide crosses an axial direction a plurality of times; an electron beam tunnel through which an electron beam passes, wherein the electron beam tunnel extends along the axial direction and crosses the first waveguide a plurality of times; and at least one auxiliary tunnel which extends parallel to the electron beam tunnel and which crosses the first waveguide a plurality of times.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: July 14, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chan-wook Baik, Ho-young Ahn, Yong-sung Kim
  • Patent number: 9041290
    Abstract: A High Frequency light source has a central body of fused quartz, with a central void, filled with a fill in the void of material excitable by High Frequency energy to form a light emitting plasma. An inner sleeve of perforate metal shim extends along the length of the central body to provide a launching gap. The sleeve has a transverse end portion extending across the other, inner end of the central body. An outer cylinder of fused quartz with an internal bore such as to be a sliding fit with the inner sleeve, itself a sliding fit on the central body. An outer sleeve of perforate metal, enclosing the outer cylinder and having an end portion extending across the flush, void ends of the quartz body and cylinder and having a skirt extending past the flush over an aluminum carrier, clamped and holding the quartz elements against the carrier.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: May 26, 2015
    Inventor: Barry Preston
  • Patent number: 9041291
    Abstract: A band pass filter comprises an air filled aluminum chamber, having a lid and a cuboid resonant cavity having a central iris. At opposite end nodes of the cavity, perfect electric conductors (PECs) are provided. One is connected to a feed wire from an input at one end of the cavity. The other PEC is connected via a further feed wire to a radiator in a fabrication of solid-dielectric, lucent material. Threaded tuning projections opposite the PECs and in the iris are provided, whereby the pass band and the transmission characteristics of the filter in the pass band can be tuned to match the input impedance of the band pass filter and the wave guide to the output impedance of a microwave drive circuit (not shown). Typically the impedance will be 50?.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: May 26, 2015
    Assignee: Ceravision Limited
    Inventors: Andrew Simon Neate, Amjid Sadiq
  • Patent number: 9006972
    Abstract: A low-temperature, atmospheric-pressure microplasma generator comprises at least one strip of metal on a dielectric substrate. A first end of the strip is connected to a ground plane and the second end of the strip is adjacent to a grounded electrode, with a gap being defined between the second end of the strip and the grounded electrode. High frequency power is supplied to the strip. The frequency is selected so that the length of the strip is an odd integer multiple of ¼ of the wavelength traveling on the strip. A microplasma forms in the gap between the second end of the strip and the grounded electrode due to electric fields in that region. A microplasma generator array comprises a plurality of strongly-coupled resonant strips in close proximity to one another. At least one of the strips has an input for high-frequency electrical power. The remaining strips resonate due to coupling from the at least one powered strip. The array can provide a continuous line or ring of plasma.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: April 14, 2015
    Assignee: Trustees of Tufts College
    Inventor: Jeffrey A. Hopwood
  • Publication number: 20150097481
    Abstract: A Lucent Waveguide Electromagnetic Wave Plasma Light Source has a fabrication (1) of quartz with an inner closed void enclosure (2) is formed of 8 mm OD, 4 mm ID drawn tube. It is sealed at its inner and outer ends (3,4). Microwave excitable plasma material is sealed inside the enclosure. Its outer end (4) protrudes through an end plate (5) by approximately 10.5 mm and the overall length of the enclosure is approximately 20.5 mm. The tube (71) from which the void is formed is continued backwards from the inner end of the void enclosure as an antenna sheath (72). The 2 mm thick end plate (5) is circular and has the enclosure (2) sealed in a central bore in it.
    Type: Application
    Filed: May 3, 2013
    Publication date: April 9, 2015
    Inventor: Andrew Simon Neate
  • Patent number: 8988012
    Abstract: In a dielectric window 41 for a plasma processing apparatus, a first dielectric window recess 47 is formed on an outer region of a surface of the dielectric window 41 in a diametrical direction of the dielectric window 41 at a side where plasma is generated, and the first dielectric window recess 47 is extended in a ring shape and has a tapered shape inwardly in a thickness direction of the dielectric window 41. A multiple number of second dielectric window recesses 53a to 53g are formed between the center of the dielectric window 41 and the first dielectric window recess 47, and each of the second dielectric window recesses 53a to 53g is recessed inwardly in the thickness direction of the dielectric window 41 from the surface of the dielectric window 41.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: March 24, 2015
    Assignee: Tokyo Electron Limited
    Inventors: Wataru Yoshikawa, Naoki Matsumoto, Jun Yoshikawa
  • Patent number: 8946993
    Abstract: Excimers are formed in a high pressure gas by applying a potential between a first electrode (14, 214) and a counter electrode (25, 226) so as to impose an electric field within the gas, or by introducing high energy electrons into the gas using an electron beam. A phosphor for converting the wavelength of radiation emitted from the formed excimers is disposed within the gas and outside a region (62, 162) where the excimers are expected to be formed, so as to avoid degradation of the phosphor.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: February 3, 2015
    Assignee: Rutgers, The State University
    Inventors: Daniel E. Murnick, Nazieh Mohammad Masoud, Richard Riman
  • Publication number: 20150022082
    Abstract: Electric lamps wherein material inside a bulb is excited using capacitive coupling through the bulb wall to external electrodes, forming plasma which emits light. Methods described include use of light-emitting material including sulfur and/or selenium, and a circuit for driving the external electrodes.
    Type: Application
    Filed: July 21, 2013
    Publication date: January 22, 2015
    Inventor: Brady Hauth
  • Publication number: 20150015140
    Abstract: A plasma generation device, a system comprising a plasma generation device, and a method of generating plasma and vacuum UV (VUV) photons are described.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 15, 2015
    Inventors: Mark Denning, Mehrnoosh Vahidpour
  • Publication number: 20140368110
    Abstract: There is provided a plasma processing apparatus which can improve density uniformity of plasma excited by a high frequency wave as in the VHF frequency band for a substrate having a large size. The plasma processing apparatus includes a waveguide member defining a waveguide, a coaxial tube supplying electromagnetic energy from a predetermined power supply position in the longitudinal direction of the waveguide into the waveguide, first and second electrodes for electric field formation disposed so as to face a plasma formation space, and a coil member disposed in the waveguide so as to generate a voltage by electromagnetic induction due to a magnetic field and also electrically connected to the first and second electrodes.
    Type: Application
    Filed: February 17, 2012
    Publication date: December 18, 2014
    Applicant: TOHOKU UNIVERSITY
    Inventor: Masaki Hirayama
  • Publication number: 20140346949
    Abstract: The invention relates to an HF resonator comprising a cylindrical cavity made of a dielectric material. An inner face of the cavity has an electrically conductive coating which is divided into a first inner coating and a second inner coating by an electrically insulating gap that encircles a lateral face of the cavity in an annular manner. An outer face of the cavity has an electrically conductive first outer coating and an electrically conductive second outer coating. The first outer coating and the second outer coating are electrically insulated from each other. The HF resonator comprises a device that is provided for applying a high-frequency electric voltage between the first outer coating and the second outer coating.
    Type: Application
    Filed: September 5, 2012
    Publication date: November 27, 2014
    Inventors: Michael Back, Oliver Heid, Michael Kleemann
  • Patent number: 8884519
    Abstract: Disclosed herein is a class of mm and sub mm wavelength amplifiers and oscillators operating with miniature helical slow wave circuits manufactured using micro fabrication technology. The helices are supported by diamond dielectric support rods. Diamond is the best possible thermal conductor, and it can be bonded to the helix. The electron beam is transmitted, not through the center of the helix, but around the outside. In some configurations the RF power produced may be radiated directly from the slow wave circuit. The method of fabrication, which is applicable above 60 GHz, is compatible with mass production.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: November 11, 2014
    Assignee: Manhattan Technologies Ltd.
    Inventors: James A. Dayton, Jr., Carol L. Kory
  • Patent number: 8884524
    Abstract: Embodiments of the present invention provide an RF conducting rod comprising a hollow portion. Particularly, the RF conducting rod comprises an elongated hollow body having a sidewall enclosing an inner volume, a first solid connector extending from a first end of the elongated hollow body, and a second solid connector extending from a second end of the elongated hollow body. Each of the elongated hollow body, the first solid connector and the second solid connector is formed from an electrically conductive material.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: November 11, 2014
    Assignee: Applied Materials, Inc.
    Inventors: Jianhua Zhou, Dale R. Du Bois, Mohamad A. Ayoub, Juan Carlos Rocha-Alvarez
  • Patent number: 8884518
    Abstract: An electrode-less plasma lamps, comprising generally of a bulb containing a gas-fill that is excited to produce light using radio-frequency (RF) energy. In specific embodiments, the use of grounded coupling-elements with integrated bulb assemblies simplifies manufacturability, improves resonant frequency control, and enables the use of solid, partially filled, and hollow lamp bodies.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: November 11, 2014
    Assignee: Topanga USA, Inc.
    Inventors: Frederick M. Espiau, Timothy J. Brockett, Mehran Matloubian
  • Publication number: 20140327357
    Abstract: A quarter wave coaxial cavity resonator for producing corona discharge plasma from is presented. The quarter wave coaxial cavity resonator has a folded cavity made of opposing concentric cavity members that are nested together to form a continuous cavity ending in a aperture. A center conductor with a tip is positioned in the cavity. The folded cavity advantageously permits the coaxial cavity resonator to resonate at a lower operating frequency than an unfolded quarter wave coaxial cavity resonator of the same length. Embodiments of the quarter wave coaxial cavity resonator use narrower apertures to reduce radiative losses, and include center conductors that are reactive load elements, such as helical coils. When a radio frequency (RF) oscillation is produced in the quarter wave coaxial cavity resonator, corona discharge plasma is formed at the tip of the center conductor. The corona discharge plasma can be used to ignite combustible materials in combustion chambers of combustion engines.
    Type: Application
    Filed: May 9, 2014
    Publication date: November 6, 2014
    Applicant: West Virginia University
    Inventors: James E. Smith, Franz A. Pertl
  • Publication number: 20140312767
    Abstract: A dielectric window for a plasma treatment device for a plasma treatment device that uses microwaves as a plasma source. The dielectric window is circular-plate-shaped and allows microwaves to propagate. The dielectric window has a recess that has an opening on the lower-surface side and that indents in the plate thickness direction of the dielectric window, and is provided to the lower surface at which plasma is generated when the dielectric window is provided to the plasma treatment device. The recess has a bottom surface extending in the direction perpendicular to the plate thickness direction, and a side surface extending in the plate thickness direction from the circumferential edge of the bottom surface toward the opening of the recess. In addition, an inclined surface extends at an incline relative to the plate thickness direction from the opening-side circumferential edge of the side surface toward the opening of the recess.
    Type: Application
    Filed: November 8, 2012
    Publication date: October 23, 2014
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Caizhong Tian, Naoki Matsumoto, Koji Koyama, Naoki Mihara, Kazuki Takahashi, Jun Yoshikawa, Kazuki Moyama, Takehiro Tanikawa
  • Patent number: 8860311
    Abstract: A lighting apparatus includes an emitter having a plasma bulb and a driver which provides an RF signal to the emitter to drive the plasma bulb. The lighting apparatus may be used for various applications including illuminating plants and organisms in an aquatic environment, growing plants, facility lighting, and other applications.
    Type: Grant
    Filed: December 29, 2012
    Date of Patent: October 14, 2014
    Assignee: Stray Light Optical Technologies
    Inventors: Gerald W. Rea, Robert A. Drake
  • Publication number: 20140292195
    Abstract: In a magnetron and a plasma waveguide through which a microwave oscillated from the magnetron moves, there is provided a plasma waveguide including a plurality of step parts formed at any one side on an inner side surface of the waveguide, and a block part of a predetermined height formed at any other side on the inner side surface of the waveguide, wherein the block part is formed at a side opposite to a boundary part between the plurality of step parts.
    Type: Application
    Filed: March 26, 2014
    Publication date: October 2, 2014
    Applicant: TRIPLE CORES KOREA CO., LTD.
    Inventors: Ik Nyun Kim, Sung Ok Kang, Min Heum Eum
  • Patent number: 8847490
    Abstract: Disclosed herein is a class of mm and sub mm wavelength amplifiers and oscillators operating with miniature helical slow wave circuits manufactured using micro fabrication technology. The helices are supported by diamond dielectric support rods. Diamond is the best possible thermal conductor, and it can be bonded to the helix. The electron beam is transmitted, not through the center of the helix, but around the outside. In some configurations the RF power produced may be radiated directly from the slow wave circuit. The method of fabrication, which is applicable above 60 GHz, is compatible with mass production.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: September 30, 2014
    Assignee: Manhattan Technologies Ltd.
    Inventors: James A. Dayton, Jr., Carol L. Kory
  • Publication number: 20140265833
    Abstract: Systems and methods for compensating for harmonics produced during plasma processing in a plasma chamber are described. One of the methods includes retrieving a measurement of a combined waveform. The combined waveform includes a fundamental waveform and a harmonic waveform. The combined waveform defines a voltage proximate to a surface of a chuck, which is coupled to a radio frequency (RF) transmission line. The RF transmission line is coupled to an impedance matching circuit. The impedance matching circuit is coupled to an RF generator. The method further includes extracting the fundamental waveform from the combined waveform, determining a difference between a magnitude of the combined waveform and a magnitude of the fundamental waveform, and controlling the RF generator to compensate for the difference.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Inventor: Luc Albarede
  • Publication number: 20140251955
    Abstract: A microwave waveguide apparatus for generating plasma includes a waveguide which has first and second ends and propagates microwave from input end such that the microwave propagates from the first end to the second end, a circulator device having a first port, a second port coupled to the first end, and a third port coupled to the second end, the circulator device being structured such that the microwave is received at the first port, propagates from the second port to the first end, is received at the third port from the second end and is returned toward the input end, and a matching device which is interposed between the input end and the circulator device and reflects part of the microwave received at the third port and returned toward the input end to the first port. The waveguide has a slot-hole extending along the microwave propagation direction in the waveguide.
    Type: Application
    Filed: January 21, 2014
    Publication date: September 11, 2014
    Applicants: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY, TOKYO ELECTRON LIMITED
    Inventors: Hitoshi Itoh, Yusuke Kubota, Hirotaka Toyoda, Masaru Hori
  • Publication number: 20140197729
    Abstract: A lucent waveguide plasma light source has a quartz waveguide body with a central through bore. The bore has orifices at its opposite ends, opening centrally of flat, end faces of the body. Between these the body has a circular cylindrical periphery. A drawn quartz tube is inserted into the body. The tube has its one end closed and a collar which locates the tube in the bore and is fused to the faces at the orifices of the bore. The tube is evacuated and charged with excitable material and closed as a sealed void. A Faraday cage and an antenna in a bore in the body are provided for feeding microwave energy to the light source. When powered with microwaves, resonance is established in the wave guide and a plasma is established in the void, wherein Light radiates and leaves the waveguide and Faraday cage radially of the periphery.
    Type: Application
    Filed: June 28, 2012
    Publication date: July 17, 2014
    Inventor: Andrew Simon Neate
  • Patent number: 8766539
    Abstract: An electrode-less plasma lamp, comprising generally of a bulb containing a gas-fill and light emitter(s) that is excited to produce light using radio-frequency (RF) energy. The present lamp includes compact air resonators/waveguides that use grounded coupling-elements with integrated bulb assemblies to reduce the size of the resonator and improve the performance of the lamp as well as reduce cost and simplify manufacturability.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: July 1, 2014
    Assignee: Topanga USA, Inc.
    Inventors: Frederick M. Espiau, Timothy J. Brockett, Mehran Matloubian, Douglas A. Doughty
  • Publication number: 20140167607
    Abstract: An electrodeless lighting device and methods for manufacturing the same are provided. The method includes inserting a dose into the bulb and at least one of heating a vacuum line for applying a vacuum to the bulb at first predetermined temperature and heating the bulb containing the dose at a second predetermined temperature for a predetermined time.
    Type: Application
    Filed: December 17, 2013
    Publication date: June 19, 2014
    Applicant: LG Electronics Inc.
    Inventors: Yongdae KANG, Jungwon KANG, Hyunjung KIM
  • Publication number: 20140159571
    Abstract: A microplasma generator includes first and second conductive resonators disposed on a first surface of a dielectric substrate. The first and second conductive resonators are arranged in line with one another with a gap defined between a first end of each resonator. A ground plane is disposed on a second surface of the dielectric substrate and a second end of each of the first and second resonators is coupled to the ground plane. A power input connector is coupled to the first resonator at a first predetermined distance from the second end chosen as a function of the impedance of the first conductive resonator. A microplasma generating array includes a number of resonators in a dielectric material substrate with one end of each resonator coupled to ground. A micro-plasma is generated at the non-grounded end of each resonator. The substrate includes a ground electrode and the microplasmas are generated between the non-grounded end of the resonator and the ground electrode.
    Type: Application
    Filed: July 26, 2012
    Publication date: June 12, 2014
    Applicant: Trustees of Tufts College
    Inventors: Jeffrey A. Hopwood, Chen Wu, Alan R. Hoskinson, Sameer Sonkusale
  • Patent number: 8749139
    Abstract: A lucent crucible of a Lucent Waveguide Microwave Plasma Light Source (LWMPLS) comprising a Light Emitting Resonator (LER) in form of a crucible (1) of fused quartz which has a central void (2) having microwave excitable material (3) within it. In one example, the void is 4 mm in diameter and has a length (L) of 21 mm. The LWMPLS is operated at a power (P) of 280 W and thus with a plasma loading P/L of 133 w/cm and a wall loading of 106 w/cm2. The lamp is thus operated with a high efficiency—in terms of lumens per watt—while having a reasonable lifetime.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: June 10, 2014
    Inventors: Andrew Simon Neate, Barry Preston
  • Publication number: 20140132153
    Abstract: A lighting apparatus is provided that includes a magnetron configured to generate microwaves having a predetermined frequency, a waveguide including a first wave guide space configured to introduce and guide the microwaves and a second wave guide space expanded from the first wave guide space, a resonator to which the microwaves are transmitted from the waveguide and a bulb located in the resonator, the bulb encapsulating a light emitting material and being configured to emit light in response to the transmitted microwaves. The second wave guide space is located in a transmission path of the microwaves transmitted from the magnetron to the resonator.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 15, 2014
    Applicant: LG Electronics Inc.
    Inventors: Junsung KIM, Hyunjung KIM, Donghun KIM
  • Publication number: 20140077695
    Abstract: The present invention includes an electron-discharge signal system with a supercharged electron source and process therefor. The system may be any signal modification unit such as a klystron, magnetron, traveling wave tube, etc. The system includes a heat-responsive electron source, supercharger, collector, a wave modification assembly, and a bleeder module. The electron source discharges an electron beam along a predetermined electron path. The supercharger heats the electron source upon absorption of electromagnetic radiation of a predetermined signal characteristic redirected by the system. The bleeder module redirects a portion of the system's output signal to the supercharger, which heats in response thereto. In other embodiments, the system may be operated entirely by electromagnetic radiation from a freestanding signal source.
    Type: Application
    Filed: September 17, 2012
    Publication date: March 20, 2014
    Inventors: Jacob Conner, Ryan Giedd
  • Patent number: 8674603
    Abstract: An electrodeless plasma lamp includes a bulb containing a gas-fill and light emitter(s) excited to produce light using radio-frequency (RF) energy. Input and output coupling elements separated from each other by a gap couple RF energy from an RF source to the bulb. One end of the input coupling element is electrically connected to an RF source while the other end is connected to ground. One end of the output coupling element is connected to ground while the other end is connected to the bulb.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: March 18, 2014
    Assignee: Topanga Technologies, Inc.
    Inventors: Frederick M. Espiau, Mehran Matloubian, Timothy J. Brockett, David Schmelzer
  • Publication number: 20140062298
    Abstract: This disclosure is directed to devices and methods for generating light with electrode-less plasma lamps. More particularly, the present invention provides plasma lamps driven by a radio-frequency source without the use of electrodes inside the bulb, and a pulse-width modulation device that provides RF power regulation, and related methods. The bulb comprises gaseous material with metal halides and/or light emitters that, when powered, substantially stays in an arc shape state. The switching pulse-width modulation device is operable at specific modulation frequencies, duty cycles, and durations to stabilize or control the arc state/mode, which enables consistent and high efficiencies.
    Type: Application
    Filed: August 31, 2012
    Publication date: March 6, 2014
    Applicant: Topanga Technologies, Inc.
    Inventors: Timothy Brockett, David Schmelzer, Aric Dorschner, Mehran Matloubian