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1.发明授权Passive jitter reduction in crossed-field amplifier with secondary emission material on anode vanes 失效在阳极叶片上具有二次发射材料的交叉场放大器的被动抖动减小
公开(公告)号：US5874806A
公开(公告)日：1999-02-23
申请号：US725121
申请日：1996-10-02
摘要： A crossed-field amplifier is provided having a cathode structure with an emitting surface which emits secondary electrons upon impingement of priming electrons, an anode vane structure surrounding the cathode and a signal input port located adjacent the anode vanes. A secondary emission material is disposed in an area proximate the signal input port for providing priming electrons in the interaction region of the amplifier. The RF input signal causes the secondary emission material to emit priming electrons for use by the cathode structure. The creation of priming electrons in the interaction area reduces irregular start-up or "jitter" typically experienced with the amplifier at low pulse repetition frequencies.
摘要翻译： 提供了具有阴极结构的交叉场放大器，该阴极结构具有在引发电子的冲击时发射二次电子的发射表面，围绕阴极的阳极叶片结构和位于阳极叶片附近的信号输入端口。 二次发射材料设置在靠近信号输入端口的区域中，用于在放大器的相互作用区域中提供引发电子。 RF输入信号使二次发射材料发射引发电子以供阴极结构使用。 在相互作用区域中产生引发电子减少了在低脉冲重复频率下放大器通常经历的不规则启动或“抖动”。
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公开(公告)号：US5418427A
公开(公告)日：1995-05-23
申请号：US890663
申请日：1992-05-28
申请人： John C. Cipolla , Chris L. Wheeland , Guilford R. MacPhail , Joseph C. Musheno , James L. Barry
发明人： John C. Cipolla , Chris L. Wheeland , Guilford R. MacPhail , Joseph C. Musheno , James L. Barry
IPC分类号： H01J1/42 , H01J23/00 , H01J23/02 , H01J23/05 , H01J25/44 , H01J25/587 , H01J23/24 , H01J25/36
CPC分类号： H01J25/44 , H01J1/42 , H01J23/005 , H01J23/02 , H01J23/05 , H01J25/587
摘要： The present invention provides a double helix coupled vane forward wave crossed-field amplifier utilizing individually cooled vanes in the RF slow-wave circuit. Specifically, a double helix coupled vane is machined to create a channel in the shape of a "U" on one side of the vane. A vane coolant tube formed in a corresponding U-shape is inserted and brazed to the machined vane. The vane assembly is then attached to the anode body of which the backwall has holes formed to accept the coolant tubes from each vane. Divided backwall coolant channels are brazed to the outside of the anode, thereby placing in fluid communication the coolant channels to the vane coolant tube. Accordingly, coolant is cycled through each vane tube and individual vanes of the anode are thus cooled.
摘要翻译： 本发明提供了在RF慢波电路中采用单独冷却的叶片的双螺旋耦合叶片正向波交叉场放大器。 具体地，加工双螺旋联接叶片以在叶片的一侧上形成“U”形的通道。 形成为相应的U形的叶片式冷却剂管被插入并钎焊到加工的叶片上。 叶片组件然后附接到阳极体，其后壁具有形成的孔，以接收来自每个叶片的冷却剂管。 分隔的后壁冷却剂通道钎焊到阳极的外部，从而将冷却剂通道流体连通到叶片冷却剂管。 因此，冷却剂循环通过每个叶片管，并且阳极的各个叶片因此被冷却。
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公开(公告)号：US4814720A
公开(公告)日：1989-03-21
申请号：US195073
申请日：1988-05-17
CPC分类号： H01J25/44
摘要： In a forward wave low noise cross-field amplifier a slow wave structure is disposed about a predetermined portion of the cathode. The slow wave structure of the cathode is accurately proportioned and spaced to have a dispersion curve near to the dispersion of the slow wave structure of the anode to permit cross-coupling of the RF input from the slow wave structure of the anode to the slow wave structure of the cathode.
摘要翻译： 在正向波低噪声交叉场放大器中，围绕阴极的预定部分设置慢波结构。 阴极的慢波结构准确地成比例地并且间隔开以具有靠近阳极的慢波结构的色散的色散曲线，以允许从阳极的慢波结构到慢波的RF输入的交叉耦合 阴极的结构。
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公开(公告)号：US5600207A
公开(公告)日：1997-02-04
申请号：US281468
申请日：1994-07-27
申请人： Michael S. Worthington , Kenneth F. Ramacher , Chris L. Wheeland , Scott A. Kleinle , Edward M. Doyle , Joseph C. Musheno
发明人： Michael S. Worthington , Kenneth F. Ramacher , Chris L. Wheeland , Scott A. Kleinle , Edward M. Doyle , Joseph C. Musheno
IPC分类号： H01J1/42 , H01J23/00 , H01J23/02 , H01J23/05 , H01J25/44 , H01J25/587 , H01J23/24 , H01J25/36
CPC分类号： H01J1/42 , H01J23/005 , H01J23/02 , H01J23/05 , H01J25/44 , H01J25/587
摘要： The present invention provides a double helix coupled vane forward wave crossed-field amplifier utilizing backwall cooling and vane channel cooling in the RF slow wave circuit. Backwall channel cooling is provided for the majority of the anode vanes. Additional cooling is provided exclusively for the output vanes via individual coolant carrying passages in each output vane. The coolant carrying passages are machined into each standard double helix coupled output vane to create a vane channel in the shape of a "U". A tube formed in a corresponding U-shape is inserted and brazed to the machined vane. The vane assembly is then attached to the anode body of which the backwall has holes formed to accept the tubes from each vane. Divided backwall coolant channels are brazed to the outside of the anode, thereby placing in fluid communication the coolant channels to the tubes. Accordingly, coolant is cycled from a first backwall channel, through the output vanes and through the majority of the circumference of the anode via a second backwall channel, and back into the first backwall channel through a conduit and the vanes of the anode are thus preferentially cooled.
摘要翻译： 本发明提供了在RF慢波电路中利用后壁冷却和叶片通道冷却的双螺旋耦合叶片正向波交叉场放大器。 为大多数阳极叶片提供后壁通道冷却。 通过每个输出叶片中的单独的冷却剂承载通道为输出叶片提供额外的冷却。 冷却剂承载通道被加工成每个标准的双螺旋结合输出叶片，以形成“U”形的叶片通道。 形成为相应的U形的管被插入并钎焊到加工的叶片上。 叶片组件然后附接到阳极体，其后壁具有形成的孔，以接收来自每个叶片的管。 分隔的后壁冷却剂通道钎焊到阳极的外部，从而将冷却剂通道流体连通到管。 因此，冷却剂从第一后壁通道循环通过输出叶片并且经由第二后壁通道穿过阳极的大部分圆周，并且通过导管返回到第一后壁通道中，因此阳极的叶片优先 冷却。
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公开(公告)号：US5412281A
公开(公告)日：1995-05-02
申请号：US40514
申请日：1993-03-31
申请人： George K. Farney , Chris L. Wheeland , Kenneth F. Ramacher , Edward M. Doyle , Michael S. Worthington
发明人： George K. Farney , Chris L. Wheeland , Kenneth F. Ramacher , Edward M. Doyle , Michael S. Worthington
CPC分类号： H01J23/54 , H01J23/05 , H01J2225/42
摘要： A crossed-field amplifier (CFA) includes a cylindrical cathode having an emitting surface coaxially disposed within an annular anode structure. The cathode has at least one circumferential groove disposed in the emitting surface. The grooves are relatively deep in comparison with their width. The grooves provide a phase smoothing of the rotating electron cloud spokes operative during crossed-field interaction. CFA noise is reduced by removal of the out-of-phase electrons. Due to their deeply cycloiding paths, these out-of-phase electrons become trapped in the grooves within a region generally shielded from the electric field of the CFA.
摘要翻译： 交叉场放大器（CFA）包括具有同轴地设置在环形阳极结构内的发射表面的圆柱形阴极。 阴极具有布置在发射表面中的至少一个周向凹槽。 与其宽度相比，凹槽相对较深。 凹槽提供在交叉场相互作用期间操作的旋转电子云辐条的相位平滑。 通过去除异相电子来减少CFA噪声。 由于它们的深摆线路径，这些异相电子被捕获在通常与CFA的电场屏蔽的区域内的沟槽中。
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公开(公告)号：US4831335A
公开(公告)日：1989-05-16
申请号：US195074
申请日：1988-05-17
摘要： There is provided a miniature high gain forward wave crossed-field amplifier wherein the anode slow wave structure includes double helix coupled vanes having a predetermined pitch such that the distance between the plane of symmetry of each vane is substantially narrow as compared with the thickness of each vane. The vanes also having a predetermined length and height, the height being greater than one half of the length. The wires of the double helical coils has a cross-sectional thickness which is at least one order of magnitude less than the plane of symmetry diameter of each turn of the coils. The distance between the outer diameter of each coil along the transverse face of each vane is quite large. The pitch ratio of the vanes is less than one half of the thickness thereof. Samarium cobalt magnets are used having annular end pieces which form the walls of the vacuum chamber. A high gain of 18 to 22 dB in a volume of approximately 50 cubic inches and a weight of less than 10 pounds is achieved.
摘要翻译： 提供了一种微型高增益正向波交叉场放大器，其中阳极慢波结构包括具有预定间距的双螺旋耦合叶片，使得每个叶片的对称平面之间的距离与每个叶片的厚度相比基本上窄 叶片。 叶片还具有预定的长度和高度，高度大于长度的一半。 双螺旋线圈的导线的横截面厚度比每圈线圈的对称直径平面至少小一个数量级。 每个线圈沿着每个叶片的横向面的外径之间的距离相当大。 叶片的间距比小于其厚度的一半。 使用钐钴磁体，其具有形成真空室的壁的环形端部件。 在大约50立方英寸的体积和小于10磅的重量中获得了18至22dB的高增益。
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