公开(公告)号：US11961693B2

公开(公告)日：2024-04-16

申请号：US17525698

申请日：2021-11-12

申请人： ELVE INC.

发明人： Diana Gamzina Daugherty

IPC分类号： H01J23/083 ,  H01J9/18 ,  H01J23/06 ,  H01J23/16 ,  H01J25/34 ,  H01J29/62 ,  H01J29/70

CPC分类号： H01J23/083 ,  H01J9/18 ,  H01J23/06 ,  H01J23/165 ,  H01J29/62 ,  H01J29/70 ,  H01J25/34 ,  H01J2229/581 ,  H01J2229/582

摘要： Vacuum electron devices (VEDs) are produced having a plurality of two-dimensional layers of various materials that are bonded together to form one or more VEDs simultaneously. The two-dimensional material layers are machined to include features needed for device operation so that when assembled and bonded into a three-dimensional structure, three-dimensional features are formed. The two-dimensional layers are bonded together using brazing, diffusion bonding, assisted diffusion bonding, solid state bonding, cold welding, ultrasonic welding, and the like. The manufacturing process enables incorporation of metallic, magnetic, and ceramic materials required for VED fabrication while maintaining required positional accuracy and multiple devices per batch capability. The VEDs so produced include a combination of magnetic and electrostatic lenses for electron beam control.

公开(公告)号：US20230420212A1

公开(公告)日：2023-12-28

申请号：US18338659

申请日：2023-06-21

申请人： UNM RAINFOREST INNOVATIONS

发明人： Khandakar Nusrat ISLAM ,  Edl SCHAMILOGLU

IPC分类号： H01J23/04 ,  H01J25/34

CPC分类号： H01J23/04 ,  H01J25/34

摘要： A method for generating multi-stream electron beams is disclosed, the method including connecting an inner cathode to a cathode stalk, connecting an outer cathode to the cathode stalk, driving the cathode stalk with a pulsed power generator at a single potential, producing a first electron beam from the inner cathode, and producing a second electron beam from the outer cathode. Implementations of the method for generating multi-stream electron beams may include where each of the inner cathode and the outer cathode may include nested magnetically insulated coaxial diodes (MICDs). The first electron beam and the second electron beam can be generated with different energies. A multi-stream traveling wave tube (TWT) and an electron beam generating apparatus are also described.

公开(公告)号：US20230207246A1

公开(公告)日：2023-06-29

申请号：US17927214

申请日：2021-02-15

申请人： NEC Network and Sensor Systems, Ltd.

发明人： Naoki IIZUKA ,  Yukihira NAKAZATO

IPC分类号： H01J23/34 ,  H01J25/34 ,  H02M3/335

CPC分类号： H01J23/34 ,  H01J25/34 ,  H02M3/335

摘要： In order to suppress the amount of time needed for the start-up of a microwave tube carried out when voltage fed from a power source has decreased, while avoiding increase in scale of a power storage unit, this power supply device includes: a power supply unit that supplies power fed from the power source to the microwave tube that is provided with a cathode, a heater for heating the cathode, an anode, and a collector; a power storage unit that stores the fed power and, if the voltage of the fed power decreases, supplies stored power that is power obtained by the power storing, to the microwave tube; and a power supply switching unit that, if the voltage of the fed power decreases, stops supplying the stored power to the anode and does not stop supplying the stored power to the heater.

公开(公告)号：US20230103140A1

公开(公告)日：2023-03-30

申请号：US17749360

申请日：2022-05-20

申请人： BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY

发明人： Peng ZHANG ,  Lin WU ,  Xiao XIONG ,  Yang ZHOU

IPC分类号： H01J1/34 ,  H01J37/26 ,  H01J25/34 ,  H05H15/00 ,  H01J23/04 ,  H01J37/073 ,  H05H7/02 ,  H05H9/00 ,  H05H7/22

摘要： A dielectric coated plasmonic photoemitter is provided. An aspect of the present photonic apparatus includes a conductive photoemitter including a dielectric material coating or layered on a metallic core. The dielectric material being configured to enhance a local optical field strength and current density of the photoemitter as compared to a bare photoemitter without the dielectric layer. The dielectric layered photoemitter being tunable to transmit photoemissions from corners thereof with different photonic characteristics depending on a laser wavelength pulse received.

公开(公告)号：US20220246381A1

公开(公告)日：2022-08-04

申请号：US17583046

申请日：2022-01-24

申请人： THALES

发明人： Frédéric ANDRE

IPC分类号： H01J23/12 ,  H01J25/34 ,  H01J23/027 ,  H04B7/185

摘要： A travelling-wave tube comprising a helix joined by posts to a vacuum chamber, each post made of electrically insulating material being covered by an electrically conductive material, of electrical conductivity comprised between 1000 and 100000 S·m−1, over a portion of the post extending from the end of the post joined to the helix to the end of the post joined to the vacuum chamber and corresponding to a height comprised between 10% and 50% of the post.

公开(公告)号：US20210335567A1

公开(公告)日：2021-10-28

申请号：US17271658

申请日：2019-08-21

申请人： Thales Deutschland GmbH Electron Devices

发明人： Christof DIETRICH ,  Stefan BRUNNER

IPC分类号： H01J23/00 ,  H01J25/34

摘要： An arrangement of conduction-cooled travelling wave tubes includes multiple travelling wave tubes mounted on a common base, wherein the travelling wave tubes are thermally connected to the base so that during operation of the travelling wave tubes the base forms a heat sink for the travelling wave tubes, and the base is designed to accommodate multiple travelling wave tubes in terms of their dimensions along their beam axes so as to increase the number of travelling wave tubes per surface area unit of the base.

公开(公告)号：US20200162045A1

公开(公告)日：2020-05-21

申请号：US16555691

申请日：2019-08-29

申请人： Tesat-Spacecom GmbH & Co. KG

发明人： Christian Arnold ,  Tobias Janocha ,  Ulrich Mahr ,  Benjamin Falk

IPC分类号： H03F3/58 ,  H03F3/189 ,  H03F3/21 ,  H01J25/34 ,  H04B7/185

摘要： A high-frequency module can be used in communication satellites. The high-frequency module contains an electronic unit and a housing. The housing at least partially encloses the electronic unit, and the electronic unit is arranged at least partially in an interior space of the housing. An internal connector is arranged on the housing, which is coupled to the electronic unit such that electrical signals can be transmitted between the electronic unit and the internal connector. The internal connector is constructed integrally with at least a part of the housing. This allows a thermo-mechanical stress on the electronic unit to be reduced.

公开(公告)号：US10062538B2

公开(公告)日：2018-08-28

申请号：US14876191

申请日：2015-10-06

申请人： Nanyang Technological University

发明人： Sheel Aditya ,  Zhao Chen

IPC分类号： H01J25/34 ,  H01J23/26 ,  H01J23/28

CPC分类号： H01J25/34 ,  H01J23/26 ,  H01J23/28

摘要： According to embodiments of the present invention, an electron device is provided. The electron device includes a support substrate, a conductive planar slow-wave structure on the support substrate, the conductive planar slow-wave structure being adapted to receive an electromagnetic wave signal for interaction with an electron beam, and a dielectric layer arrangement in between the conductive planar slow-wave structure and the support substrate, the dielectric layer arrangement being arranged on the support substrate at only one or more support substrate portions overlapping with the conductive planar slow-wave structure. According to further embodiments of the present invention, a method for manufacturing an electron device is also provided.

公开(公告)号：US09819320B1

公开(公告)日：2017-11-14

申请号：US15414535

申请日：2017-01-24

申请人： Brad W. Hoff ,  David M. French

发明人： Brad W. Hoff ,  David M. French

IPC分类号： H03F1/00 ,  H03F3/58 ,  H01J25/34 ,  H01J23/04 ,  H01J23/06 ,  H01J23/24

CPC分类号： H03F3/58 ,  H01J23/04 ,  H01J23/06 ,  H01J23/24 ,  H01J25/34

摘要： A coaxial amplifier having at least one electron beam is provided. The amplifier may include a conductive rod, a plurality of parallel discs on the rod, a cathode array for producing at least one electron beam. When a plurality of electron beams are formed they are arranged in an annular configuration around said rod and disks, and directed along said rod and coaxially thereof. A first waveguide may apply electromagnetic wave energy to one end of said disc and rod assembly to induce propagation of said energy along said assembly. A second waveguide may extract the amplified electromagnetic energy from the other end of the disc and rod assembly.

公开(公告)号：US09038960B2

公开(公告)日：2015-05-26

申请号：US13214527

申请日：2011-08-22

申请人： Christian Flemin ,  Andrew Walker

发明人： Christian Flemin ,  Andrew Walker

IPC分类号： B64G1/58 ,  B64G1/50 ,  H01J23/033 ,  H01J25/34

CPC分类号： B64G1/50 ,  B64G1/503 ,  B64G1/58 ,  H01J23/033 ,  H01J25/34

摘要： A device for thermal monitoring a piece of equipment, which is integrated on a craft placed in a forced vacuum environment, an outside part of the equipment projecting outside of a wall of the craft and being subjected to a solar radiation flux, includes an absorbent screen that is suitable for being placed between the outside part of the equipment and the wall of the craft, whereby this absorbent screen has—on at least one portion of its front face, designed to be placed on the side removed from the wall of the craft—an absorptivity αSOLAR that is the largest possible in the field of solar radiation, coupled to a low emissivity εIR in the infrared spectrum. The absorbent screen is made of a very heat-conductive material and has—on at least a portion of its rear face, suitable for being oriented toward the wall of the craft—a high emissivity εIR in the infrared spectrum, typically greater than or equal to 0.7.

摘要翻译： 一种用于热监测集成在放置在强制真空环境中的工艺的设备上的设备，突出在工艺壁的外部并经受太阳辐射通量的设备的外部包括吸收屏幕 适于放置在设备的外部部分和工艺的壁之间，由此该吸收性筛网具有至少其前表面的至少一部分，设计成放置在从工艺的壁上移除的一侧 - 在太阳辐射领域最大可能的吸收率αSOLAR，与红外光谱中的低发射率和红外光耦合。 吸收性筛网由非常导热的材料制成，并且在其后表面的至少一部分上，适于朝向工艺的壁定向 - 红外光谱中的高发射率和红外光谱，通常大于 或等于0.7。