Movable Tuning Element (e.g., Slug) Patents (Class 315/39.61)
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Patent number: 9758378Abstract: A device for producing exfoliated graphite from graphite flakes, intercalated graphite, or expanded graphite by means of microwave heating using single mode microwave cavities, a method of producing such materials and products from such methods.Type: GrantFiled: November 12, 2015Date of Patent: September 12, 2017Inventors: Michael R. Knox, Scott L. Murray, Jeffri J. Narendra
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Patent number: 8796928Abstract: In order to increase a service life of a microwave generator, a resonator configuration for a microwave generator has a hollow cylindrical electrical conductor positioned inside a housing, a first electrode, and a second electrode. Two electrodes are spaced apart from one another and form a spark gap in the region of the conductor. A contact element is provided for making electrical contact between the conductor and the first electrode. The position of the first electrode can be adjusted to modify a length of the spark gap. Furthermore, the contact element is electrically connected to the first electrode or its holder so as to resist movement so that the opposing contact surfaces remain in contact even when the position of the first electrode is adjusted with respect to the second electrode. The contact element is configured to be deformable, preferably elastically deformable, for this purpose.Type: GrantFiled: November 30, 2012Date of Patent: August 5, 2014Assignee: Diehl BGT Defence GmbH & Co. KGInventor: Josef Dommer
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Publication number: 20130140985Abstract: In order to increase a service life of a microwave generator, a resonator configuration for a microwave generator has a hollow cylindrical electrical conductor positioned inside a housing, a first electrode, and a second electrode. Two electrodes are spaced apart from one another and form a spark gap in the region of the conductor. A contact element is provided for making electrical contact between the conductor and the first electrode. The position of the first electrode can be adjusted to modify a length of the spark gap. Furthermore, the contact element is electrically connected to the first electrode or its holder so as to resist movement so that the opposing contact surfaces remain in contact even when the position of the first electrode is adjusted with respect to the second electrode. The contact element is configured to be deformable, preferably elastically deformable, for this purpose.Type: ApplicationFiled: November 30, 2012Publication date: June 6, 2013Applicant: DIEHL BGT DEFENCE GMBH & CO. KG.Inventor: DIEHL BGT DEFENCE GMBH & CO. KG.
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Patent number: 8441193Abstract: A highly-reliable electronic frequency tuning magnetron comprises an anode for forming a resonant cavity which is segmented into a plurality of spaces in an inner periphery side of a cylindrical anode shell, a cathode provided at the center of the anode shell along its cylindrical axial direction and an exhausted structure having a coaxial central conductor which is connected to the inside of the cavity of the anode shell and is coupled thereto in a high-frequency manner, wherein the coaxial central conductor is externally led through a wall of the exhausted structure via a through-hole and the through-hole is covered by a dielectric portion placed between an external conductor for constituting the coaxial central conductor and the central conductor, wherein a portion of the led coaxial central conductor is conductively connected to a switching element.Type: GrantFiled: October 2, 2009Date of Patent: May 14, 2013Assignee: New Japan Radio Co., Ltd.Inventors: Hideyuki Obata, Kunihiko Takahashi
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Publication number: 20120200223Abstract: The hyperfrequency wave generator device according to the invention comprises a plurality of magnetrons, each magnetron comprising: a cathode, and an anode, surrounding the cathode and comprising an inner surface defining a plurality of resonant cavities distributed along its periphery. The generator device also comprises at least one waveguide, each waveguide extending from the anode of a magnetron toward the outside of the magnetron. The plurality of resonant cavities of each magnetron comprises a plurality of resonant connecting cavities, or at least one resonant connecting cavity and at least one resonant output cavity. Each resonant connecting cavity of each magnetron is identical each resonant connecting cavity and, if the magnetron comprises at least one output cavity, to each resonant output cavity of the magnetron.Type: ApplicationFiled: December 27, 2011Publication date: August 9, 2012Applicant: THALESInventors: Jean-Pierre Brasile, Dominique Fasse, Patrick Sirot, Dominique Jousse
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Patent number: 8159136Abstract: A plasma lamp is described with resonant frequency tuning capability and associated methods for tuning. One tuning method allows plasma lamp manufacturer to set the frequency of lamps to several discrete predetermined values. For example, most lamps that are near the center of a frequency distribution can be tuned to a nominal value such as 918.7 MHz. Other frequencies can also be tuned to increase manufacturing yield and improve lamp performance.Type: GrantFiled: February 7, 2008Date of Patent: April 17, 2012Assignee: Luxim CorporationInventors: Marc DeVincentis, Sandeep Mudunuri
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Patent number: 7605542Abstract: A light-emitting device, includes: an emitter sealed with a gas emitting light caused by a microwave; a high frequency power supply section including a diamond SAW oscillator and outputting a high frequency signal being output from the diamond SAW oscillator to a subsequent stage; and a waveguide unit emitting the high frequency signal being input from the high frequency power supply section towards the emitter as the microwave.Type: GrantFiled: September 28, 2006Date of Patent: October 20, 2009Assignee: Seiko Epson CorporationInventors: Hideo Karasawa, Yoshiaki Matsumoto, Masahiro Onuki, Masayasu Sakuma, Yutaka Takada
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Patent number: 7026761Abstract: A magnetron includes a decoupling plate located between the end hat of the magnetron cathode and an output coupling member. The use of the decoupling plate presents a high impedance and gives a resonant circuit which is arranged to be resonant at the operating frequency of the magnetron. This prevents or reduces power loss due to capacitive coupling. In another arrangement, the decoupling plate is mounted to a post on the end hat of the magnetron cathode.Type: GrantFiled: March 30, 2001Date of Patent: April 11, 2006Assignee: E2V Technologies (UK) LimitedInventors: Kesar Saleem, Michael B Brady
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Publication number: 20040004439Abstract: This invention provides a magnetron high frequency device which includes: a filtering inductor coupled to a positive end of a direct current power supply and having a first end and a second end; a central tap transformer having a central tap end, a first end and a second end, said central tap end being connected to said second end of said filtering inductor; a filtering capacitor a first end of which is connected to said first end of said central tap transformer and a second end of which is connected to a negative end of said direct current power supply; a first switch which is connected in series to said second end of said central tap transformer and connected to said negative end of said direct current power supply; an in-series circuit having a second switch and a second capacitor and coupled to said central tap transformer; a rectifying device coupled to a secondary winding of said central tap transformer; and a magnetron coupled to said rectifying device, wherein, said first capacitor, said second capaciType: ApplicationFiled: July 1, 2003Publication date: January 8, 2004Applicant: Delta Electronics, Inc.Inventors: JianHong Zeng, XingKuan Guo, JianPing Ying