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    • 13. 发明申请
    • Traveling-Wave Tube Turn-Off Body Energy Circuit
    • 行波管截止体能量回路
    • US20110127911A1
    • 2011-06-02
    • US13022897
    • 2011-02-08
    • David Eric Lewis
    • David Eric Lewis
    • H01J25/34H05B37/02
    • H01J23/34Y10T307/696
    • An apparatus that includes a traveling-wave tube having an electron gun having a cathode. The apparatus also includes a first power supply for establishing a first electric potential between the cathode and an anode and for providing an operational current to the cathode to generate a beam of electrons. The apparatus also includes a slow-wave structure having a passage through which the beam of electrons passes. The apparatus also includes a second power supply for providing a voltage to a beam focusing electrode to establish an electric potential between the cathode and the beam focusing electrode. The apparatus also includes a switching module coupled to the first power supply and the second power supply, the switching module providing a current path between the cathode and the beam focusing electrode, wherein the current path is disabled when a biasing current is below a predetermined level.
    • 一种包括具有阴极的电子枪的行波管的装置。 该装置还包括用于在阴极和阳极之间建立第一电位并且用于向阴极提供工作电流以产生电子束的第一电源。 该装置还包括具有电子束通过的通道的慢波结构。 该装置还包括用于向光束聚焦电极提供电压以在阴极和光束聚焦电极之间建立电位的第二电源。 该装置还包括耦合到第一电源和第二电源的开关模块,开关模块在阴极和束聚焦电极之间提供电流路径,其中当偏置电流低于预定电平时,电流路径被禁用 。
    • 14. 发明授权
    • Robust RF interface in a TWT
    • TWT中的强大RF接口
    • US07230384B2
    • 2007-06-12
    • US11083186
    • 2005-03-17
    • Farzad KialashakiReza J. Kialashaki
    • Farzad KialashakiReza J. Kialashaki
    • H01J25/34
    • H01J25/58H01J25/34Y10S505/855
    • Apparatus and methods provide a robust radio frequency (RF) interface for a helix-type traveling wave tube (TWT). As a vacuum device, the RF input to the TWT and the RF output from the TWT are sealed to maintain the vacuum. The disclosed robust RF interface techniques are advantageously less prone to breakage than conventional sealing techniques. In addition, configurations of the disclosed robust RF interface techniques can further exhibit relatively good impedance matches between a TWT and an associated antenna, which can reduce insertion losses and reflection losses, thereby advantageously increasing system RF output power.
    • 装置和方法为螺旋式行波管(TWT)提供鲁棒的射频(RF)接口。 作为真空装置,TWT的RF输入和TWT的RF输出被密封以保持真空。 所公开的鲁棒RF接口技术有利地比常规密封技术更不容易断裂。 此外,所公开的鲁棒RF接口技术的配置可以进一步在TWT和相关天线之间呈现相对良好的阻抗匹配,这可以减少插入损耗和反射损耗,从而有利地增加系统RF输出功率。
    • 17. 发明申请
    • Traveling wave tube with radioactive isotope charged particle source
    • 具有放射性同位素带电粒子源的行波管
    • US20060028144A1
    • 2006-02-09
    • US10910166
    • 2004-08-03
    • Sebong Chun
    • Sebong Chun
    • H01J25/34
    • H01J25/34
    • The invention discloses systems and methods for mediating electromagnetic interaction with an RF wave in a TWT. Embodiments of the present invention can be employed in high power amplifiers in satellite transponders or radar systems. Embodiments of the invention extract RF power directly from a radioactive isotope (e.g. 238Pu) by implementing a slow-wave structure in conjunction with the charged particles (e.g. alpha particles) from the isotope. In satellite applications, the invention can significantly reduce costs and mass by dramatically reducing the requirements of the supporting electrical power system.
    • 本发明公开了用于在TWT中介导与RF波的电磁相互作用的系统和方法。 本发明的实施例可用于卫星转发器或雷达系统中的大功率放大器。 本发明的实施方案通过与来自同位素的带电粒子(例如α粒子)结合实施慢波结构,从放射性同位素(例如,238Pu)直接提取RF功率。 在卫星应用中,本发明可以显着降低支持电力系统的要求,从而大大降低成本和质量。
    • 18. 发明申请
    • Methods and Apparatus for Generating Strongly-Ionized Plasmas with Ionizational Instabilities
    • 用于产生具有离子化不稳定性的强离子化等离子体的方法和装置
    • US20050184669A1
    • 2005-08-25
    • US10708281
    • 2004-02-22
    • Roman Chistyakov
    • Roman Chistyakov
    • C23C14/35H01J37/34H01J25/34
    • H01J37/3408C23C14/35H01J37/3266H01J37/3455
    • Methods and apparatus for generating strongly-ionized plasmas are disclosed. A strongly-ionized plasma generator according to one embodiment includes a chamber for confining a feed gas. An anode and a cathode assembly are positioned inside the chamber. A pulsed power supply is electrically connected between the anode and the cathode assembly. The pulsed power supply generates a multi-stage voltage pulse that includes a low-power stage with a first peak voltage having a magnitude and a rise time that is sufficient to generate a weakly-ionized plasma from the feed gas. The multi-stage voltage pulse also includes a transient stage with a second peak voltage having a magnitude and a rise time that is sufficient to shift an electron energy distribution in the weakly-ionized plasma to higher energies that increase an ionization rate which results in a rapid increase in electron density and a formation of a strongly-ionized plasma.
    • 公开了用于产生强电离等离子体的方法和装置。 根据一个实施例的强电离等离子体发生器包括用于限制进料气体的室。 阳极和阴极组件位于室内。 脉冲电源电连接在阳极和阴极组件之间。 脉冲电源产生多级电压脉冲,其包括具有第一峰值电压的低功率级,其具有足以产生来自进料气体的弱离子化等离子体的大小和上升时间。 多级电压脉冲还包括具有第二峰值电压的瞬态级,其具有足以将弱离子化等离子体中的电子能量分布移位到增加电离速率的较高能量的幅度和上升时间,这导致电离率 电子密度的快速增加和强电离等离子体的形成。