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123 条记录 (耗时 0.023 秒)

    Active electronically steered cathode emission
    3.
    发明授权
    Active electronically steered cathode emission 有权
    主动电子控制阴极发射

    公开(公告)号：US08330345B2

    公开(公告)日：2012-12-11

    申请号：US12551110

    申请日：2009-08-31

    申请人： Mark Frederick Kirshner ,  Craig Bisset Wilsen ,  Richard Donald Kowalczyk

    发明人： Mark Frederick Kirshner ,  Craig Bisset Wilsen ,  Richard Donald Kowalczyk

    IPC分类号： H01J29/46

    CPC分类号： H01J23/04 ,  H01J23/09 ,  H01J25/04

    摘要： An active electronically steered cathode (AESC) applies one or more electromagnetic modes to an input cavity, similar to that used in an inductive output tube. The structure and superposition of these modes creates local electric field maxima, causing the electron emission site or sites to move or be distributed across the surface of the cathode. Changing the amplitude, phase, or frequency of the modes provides time-variable control of the electric field profile, thereby generating electronically steered electron beams. One embodiment employs a pair of orthogonal TM modes driven out of phase, causing the electric field maximum to rotate around an annular cathode, producing a helical beam. Slots in the control grid may be used to segment the helical beam into discrete bunches to provide additional density modulation.

    摘要翻译： 一个主动的电子控制阴极（AESC）将一个或多个电磁模式应用于输入腔，类似于感应输出管中使用的。 这些模式的结构和叠加产生局部电场最大值，导致电子发射位点或位点移动或分布在阴极表面。 改变模式的幅度，相位或频率提供对电场分布的时间变量控制，从而产生电子转向的电子束。 一个实施例采用一对相位驱动的正交TM模式，使电场最大值绕环形阴极旋转，产生螺旋波束。 可以使用控制网格中的槽来将螺旋束分割成离散的束以提供附加的密度调制。

    ROTARY VACUUM FEEDTHROUGH FOR ROTATABLE MAGNETRONS
    4.
    发明申请
    ROTARY VACUUM FEEDTHROUGH FOR ROTATABLE MAGNETRONS 审中-公开
    旋转真空泵可旋转磁铁

    公开(公告)号：US20070227881A1

    公开(公告)日：2007-10-04

    申请号：US11692710

    申请日：2007-03-28

    申请人： Harald Gaertner ,  Andreas Sauer

    发明人： Harald Gaertner ,  Andreas Sauer

    IPC分类号： C23C14/00

    CPC分类号： H01J37/3405 ,  H01J23/04 ,  H01J37/32568 ,  H01J37/3455

    摘要： The present invention concerns a cathode arrangement, preferably for a magnetron cathode, especially for operation in the case of medium-to-high frequency alternating voltage or currents with a rotatable cathode, of which at least one part is arranged rotatably and vacuum-tight in at least one fixed component, and an insert, which is provided between the rotatable part and fixed component(s), with the insert made from an isolator.

    摘要翻译： 本发明涉及一种阴极装置，优选用于磁控管阴极，特别是在具有可旋转阴极的中至高频交流电压或电流的情况下操作，其中至少一个部分可旋转地和真空地安置在 至少一个固定部件和插入件，其设置在可旋转部件和固定部件之间，其中插入件由隔离器制成。

    Field emitter for microwave devices and the method of its production
    5.
    发明授权
    Field emitter for microwave devices and the method of its production 失效

    公开(公告)号：US06646367B2

    公开(公告)日：2003-11-11

    申请号：US10216249

    申请日：2002-08-12

    申请人： Vladimir Makhov

    发明人： Vladimir Makhov

    IPC分类号： H01J162

    CPC分类号： H01J9/025 ,  H01J23/04 ,  H01J23/05 ,  H01J2223/165

    摘要： The present invention relates to electronics and particularly to field emitters used in M-type microwave devices. The design of a multi-layer field emitter is proposed which has at least one operating film and supporting films, providing mechanical strength and preventing penetration of corrosion materials into the operating film at high operating temperatures. The supporting films could be produced from the same material or material with linear expansion coefficients equal or close to that of the operating film material. Built-in mechanical stress can cause not only deformation but also a break of the film during its exploitation in a wide range of temperatures. In the inventive structure the thermal stresses in the operating film during an emission from its surface are lower due to good thermal contact with supporting films.

    Traveling wave tube and method of manufacture
    7.
    发明申请
    Traveling wave tube and method of manufacture 失效
    行波管及其制造方法

    公开(公告)号：US20020167276A1

    公开(公告)日：2002-11-14

    申请号：US10125774

    申请日：2002-04-17

    发明人： Bernard K. Vancil

    IPC分类号： H01J025/34

    CPC分类号： H01J23/083 ,  H01J23/04 ,  H01J23/24 ,  H01J25/38

    摘要： A traveling wave tube includes a glass or other insulating envelope having a plurality of substantially parallel glass rods supported therewithin which in turn support an electron gun, a collector and an intermediate slow wave structure. The slow wave structure itself provides electrostatic focussing of a central electron beam thereby eliminating the need for focussing magnetics and materially decreasing the cost of construction as well as enabling miniaturization. The slow wave structure advantageously includes cavities along the electron beam through which the r.f. energy is propagated, or a double, interleaved ring loop structure supported by dielectric fins within a ground plane cylinder disposed coaxially within the glass envelope.

    摘要翻译： 行波管包括玻璃或其它绝缘外壳，其具有多个支撑在其上的基本上平行的玻璃棒，所述多个玻璃棒又支撑电子枪，集电器和中间慢波结构。 慢波结构本身提供了中心电子束的静电聚焦，从而消除了对聚焦磁性物质的需要，并且实质上降低了构造成本以及实现了小型化。 慢波结构有利地包括沿着电子束的腔，其中r.f. 传播的能量，或由同轴设置在玻璃外壳内的接地平面圆筒内的介质翅片支撑的双交错环形环结构。

    Field emission cathode and electromagnetic wave generating apparatus comprising the same
    8.
    发明授权
    Field emission cathode and electromagnetic wave generating apparatus comprising the same 失效
    场致发射阴极及其电磁波发生装置

    公开(公告)号：US06326729B1

    公开(公告)日：2001-12-04

    申请号：US09506924

    申请日：2000-02-18

    申请人： Kuniyoshi Yokoo ,  Hidenori Mimura

    发明人： Kuniyoshi Yokoo ,  Hidenori Mimura

    IPC分类号： H01J2500

    CPC分类号： H01J23/027 ,  H01J3/022 ,  H01J23/04 ,  H01J23/20 ,  H01J25/00 ,  H01J2225/10 ,  H01J2225/38

    摘要： In a field emission cathode emitting an electron beam modulated by any desired high frequency, a cathode tip is formed in one surface of an N type semiconductor substrate constituting a collector region, an insulating layer formed on the one surface of the semiconductor substrate to have an opening which surrounds said cathode tip, a gate electrode is formed on the insulating layer to have an opening which surrounds the cathode tip, a P type base region is formed in the other surface of the semiconductor substrate, a base electrode is formed on the base region, an N type emitter region is formed in the base region, and an emitter electrode is formed on the emitter region. A DC supply source is connected across the gate electrode and the emitter electrode and a high frequency supply source is connected across the base electrode and the emitter electrode. Then, an electron beam modulated by a high frequency within the millimeter wave or microwave region of the high frequency supply source can be emitted efficiently from said cathode tip. Additionally, an electron beam modulated at a high frequency is generated by applying the Gunn effect in a compound semiconductor to a field emission cathode. The thus generated electron beam is cooperated with a cavity resonator or Fabry-Pérot resonator, and an electromagnetic wave within the millimeter wave or microwave region can be efficiently generated.

    摘要翻译： 在发射由任何所需高频调制的电子束的场发射阴极中，阴极尖端形成在构成集电极区域的N型半导体衬底的一个表面中，形成在半导体衬底的一个表面上的绝缘层具有 围绕所述阴极尖端的开口，在所述绝缘层上形成栅电极以具有围绕所述阴极尖端的开口，在所述半导体衬底的另一个表面中形成P型基极区域，在所述基底上形成基极 在基极区域形成N型发射极区域，在发射极区域形成发射极。 直流电源连接在栅电极和发射极之间，高频电源连接在基极和发射极之间。 然后，可以从所述阴极尖端有效地发射在高频电源的毫米波或微波区域内被高频调制的电子束。 另外，通过将化合物半导体中的Gunn效应施加到场致发射阴极来产生高频调制的电子束。 由此产生的电子束与空腔谐振器或法布里 - 珀罗谐振器配合，可以有效地产生毫米波或微波区域内的电磁波。