公开(公告)号：US2450763A

公开(公告)日：1948-10-05

申请号：US49344443

申请日：1943-07-03

Applicant: MCNALL JOHN W

Inventor： MCNALL JOHN W

IPC: H01J23/05

CPC classification number: H01J23/05

公开(公告)号：US2414605A

公开(公告)日：1947-01-21

申请号：US48675243

申请日：1943-05-13

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： OKRESS ERNEST C ,  NELSON DONALD E

IPC: H01J23/05

CPC classification number: H01J23/05

公开(公告)号：US2411601A

公开(公告)日：1946-11-26

申请号：US41299341

申请日：1941-09-30

Applicant: RAYTHEON MFG CO

Inventor： SPENCER PERCY L

IPC: H01J23/05 ,  H01J43/02

CPC classification number: H01J23/05 ,  H01J43/02

公开(公告)号：US2408239A

公开(公告)日：1946-09-24

申请号：US49468543

申请日：1943-07-14

Applicant: RAYTHEON MFG CO

Inventor： SPENCER PERCY L

IPC: H01J23/05

CPC classification number: H01J23/05

公开(公告)号：US20180254164A1

公开(公告)日：2018-09-06

申请号：US15757343

申请日：2016-12-30

Applicant: BEIJING UNIVERSITY OF TECHNOLOGY

Inventor： JINSHU WANG ,  LIRAN DONG ,  JIE ZHANG ,  MINGCHUANG TIAN ,  JINGCHAO LIU ,  XIAOYANG CHEN ,  XIAO HAN ,  LIYANG XIAO

IPC: H01J23/05 ,  B22F3/24 ,  C23C8/20 ,  H01J9/04

CPC classification number: H01J23/05 ,  B22F3/24 ,  B22F5/12 ,  B22F2003/241 ,  B22F2301/20 ,  B22F2302/25 ,  B22F2998/10 ,  B22F2999/00 ,  C22C32/0031 ,  C23C8/20 ,  C23C8/80 ,  H01J9/04 ,  H01J9/042 ,  H01J23/04 ,  H05B6/66 ,  H05B2206/04 ,  Y10T29/49002 ,  B22F3/02 ,  B22F3/10 ,  B22F3/17 ,  B22F2201/30

Abstract: A carburized La2O3 and Lu2O3 co-doped Mo filament cathode and its fabrication method, which belongs to the technical field of rare earth-refractory metal cathodes. The rare earth oxides are La2O3 and Lu2O3, and the total concentration of rare earth oxides ranges from 2.0-5.0 wt. %. The La2O3 and Lu2O3 co-doped molybdenum oxide powers are prepared by Sol-Gel method. La2O3 and Lu2O3 co-doped Mo powers are prepared by two calcining steps. Then pressing and sintering the mixed powders to obtain the molybdenum rods; operating mechanical and heat processes of the molybdenum rods to obtain molybdenum filament. Operating electrolytic cleaning, straightening, winding modeling and cutting treatments with Mo filament to obtain the un-carburized La2O3 and Lu2O3 co-doped Mo cathode. And then carburize the filament cathode at a high temperature for a short time to obtain a cathode with high carburization degree. And then operate the out-gassing treatment and activation treatment with the cathode at a high temperature to obtain an environmental and non-radioactive cathode with good emission current and emission stability.

公开(公告)号：US09653246B2

公开(公告)日：2017-05-16

申请号：US14950818

申请日：2015-11-24

Applicant: Toshiba Hokuto Electronics Corporation

Inventor： Naoya Kato

IPC: H01J25/50 ,  H01J23/04 ,  H01J25/52 ,  H01J25/587 ,  H01J23/05 ,  H01J23/10

CPC classification number: H01J25/50 ,  H01J23/04 ,  H01J23/05 ,  H01J23/10 ,  H01J25/52 ,  H01J25/587

Abstract: To provide a magnetron improved in high efficiency and load stability while suppressing costs. By shortening the height of vane Vh so that the ratio of the height of vane Vh to a gap between end hats EHg (EHg/Vh) satisfies a condition 1.12≦EHg/Vh≦1.26, an input side pole piece-vane gap IPpvg becomes larger than an output side pole piece-vane gap OPpvg, and an input side end hat-vane gap IPevg becomes larger than an output side end hat-vane gap OPevg, load stability at high efficiency can be improved while shortening the height of vane Vh. Therefore, it is possible to provide a magnetron improved in high efficiency and load stability while suppressing costs.

公开(公告)号：US08976542B2

公开(公告)日：2015-03-10

申请号：US13509191

申请日：2010-11-11

Applicant: Robert Richardson ,  Michael Bland ,  Colin Bennett

Inventor： Robert Richardson ,  Michael Bland ,  Colin Bennett

IPC: H01J23/34 ,  H02M3/335 ,  H05B6/66 ,  H01J1/13 ,  H01J23/05 ,  H01J25/52 ,  H01J25/587

CPC classification number: H01J1/135 ,  H01J23/05 ,  H01J25/52 ,  H01J25/587

Abstract: A high frequency cathode heater supply for a microwave source includes a SMPS inverter and an isolation transformer having a primary winding arranged to be powered by the SMPS inverter, a monitor winding passing through primary core assemblies of the primary winding and a secondary winding arranged for connection to the cathode heater. A current monitor is arranged to monitor a current in the primary windings. Signal processing modules are arranged to receive a first input signal from the monitor winding indicative of a voltage across the cathode heater and a second input signal from the current monitor indicative of a current through the cathode heater. The signal processing modules are arranged to output a control signal to the SMPS inverter to control power supplied to the cathode heater dependent on a monitored resistance of, or monitored power supplied to, the cathode heater as determined from the first input signal and the second input signal.

Abstract translation: 用于微波源的高频阴极加热器电源包括SMPS逆变器和隔离变压器，其具有布置成由SMPS逆变器供电的初级绕组，通过初级绕组的初级芯组件的监视器绕组和布置成用于连接的次级绕组 到阴极加热器。 电流监视器用于监视初级绕组中的电流。 信号处理模块被布置成从监视器绕组接收指示阴极加热器两端的电压的第一输入信号和来自电流监视器的指示通过阴极加热器的电流的第二输入信号。 所述信号处理模块被布置为根据从所述第一输入信号和所述第二输入确定的所述阴极加热器的被监视电阻或监视的功率来控制向所述阴极加热器供电的功率，以输出控制信号到所述SMPS逆变器 信号。

公开(公告)号：US08810132B2

公开(公告)日：2014-08-19

申请号：US13637286

申请日：2011-03-25

Applicant: David Bernard Fox ,  Robert Richardson

Inventor： David Bernard Fox ,  Robert Richardson

IPC: H01J25/34

CPC classification number: H01J25/50 ,  H01J23/05 ,  H01J23/14 ,  H01J23/34 ,  H01J25/587

Abstract: A magnetron has an anode and a cathode. The cathode includes two parts joined by sleeves of ferrous alloy spaced by a sleeve of insulating material. The ferrous alloy sleeves are adapted to be connected to opposite poles of a power supply for heating the cathode. A high frequency power supply is used to heat the cathode. The ferrous alloy sleeves have a surface coating of conductive material. The currents induced by the magnetic field generated by the high frequency currents of the power supply are largely confined to the conductive coating due to the skin effect, avoiding the heating of and losses in the ferrous alloy itself which would otherwise ensue.

Abstract translation: 磁控管具有阳极和阴极。 阴极包括由绝缘材料套隔开的铁合金套筒连接的两个部分。 铁合金套筒适于连接到用于加热阴极的电源的相反极。 使用高频电源来加热阴极。 铁合金套管具有导电材料的表面涂层。 由电源的高频电流产生的磁场引起的电流由于皮肤效应而大部分被限制在导电涂层上，从而避免了铁合金本身的加热和损失，否则会导致这种电流。

公开(公告)号：US20140210340A1

公开(公告)日：2014-07-31

申请号：US14025918

申请日：2013-09-13

Applicant: E2V Technologies (UK) Limited

Inventor： Clive Roberts ,  Robert Charles Lodge

IPC: H01J23/05 ,  H01J25/50

CPC classification number: H01J23/05 ,  H01J25/50 ,  H01J25/587

Abstract: A magnetron cathode comprises electron emissive material included in a cathode body and a support structure for supporting the cathode body. The support structure has a longitudinal axis and includes a first part having a first cylinder integrally formed with a first end hat and a second part having a second cylinder integrally formed with a second end hat. The first cylinder and the second cylinder have an overlapping region in the longitudinal axial direction and are joined together. The cathode body is located around the first cylinder of the first part of the support structure and is joined to the first cylinder by a brazed joint. The outer surface of the first cylinder is grooved at the brazed joint.

Abstract translation: 磁控阴极包括阴极体中所含的电子发射材料和用于支撑阴极体的支撑结构。 支撑结构具有纵向轴线，并且包括具有与第一端帽一体形成的第一气缸的第一部件和具有与第二端帽一体形成的第二气缸的第二部件。 第一气缸和第二气缸在纵轴方向上具有重叠区域并且连接在一起。 阴极体位于支撑结构的第一部分的第一圆柱体周围，并通过钎焊接头连接到第一圆柱体。 第一气缸的外表面在钎焊接头处开槽。

公开(公告)号：US20130105742A1

公开(公告)日：2013-05-02

申请号：US13340701

申请日：2011-12-30

Applicant: Jinshu Wang ,  Wei Liu ,  Fan Yang ,  Xiang Liu ,  Hongyi Li ,  Meiling Zhou ,  Tieyong Zuo

Inventor： Jinshu Wang ,  Wei Liu ,  Fan Yang ,  Xiang Liu ,  Hongyi Li ,  Meiling Zhou ,  Tieyong Zuo

IPC: H01B1/08 ,  B28B3/00 ,  B28B11/00 ,  B05D5/12

CPC classification number: H01J1/142 ,  H01J1/13 ,  H01J1/14 ,  H01J1/144 ,  H01J9/047 ,  H01J23/05

Abstract: Impregnated rare earth metal-containing barium-aluminum-scandate cathodes with a rare earth oxide doped tungsten matrix and methods for the fabrication thereof are described. In one aspect, an impregnated rare earth metal-containing barium-aluminum-scandate cathode comprises: a rare earth oxide doped tungsten matrix, and an impregnated active substance. The active substance comprises scandium oxide (Sc2O3), a second rare earth oxide, and barium calcium aluminate, wherein the molar ratio of Ba:Ca:Al is about 4:1:1.

Abstract translation: 描述了具有稀土氧化物掺杂钨基体的含浸稀土金属的钡 - 铝 - 钪酸盐阴极及其制造方法。 一方面，含浸稀土金属的钡 - 铝 - 钪酸盐阴极包括：掺杂稀土氧化物的钨基体和浸渍的活性物质。 活性物质包含氧化钪（Sc 2 O 3），第二稀土氧化物和铝酸钡钙，其中Ba:Ca:Al的摩尔比为约4:1:1。