利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

7 条记录 (耗时 0.011 秒)

    High efficiency traveling wave tube employing harmonic bunching
    1.
    发明授权
    High efficiency traveling wave tube employing harmonic bunching 失效
    高效率旅行波导采用和谐轰炸

    公开(公告)号：US3668544A

    公开(公告)日：1972-06-06

    申请号：US3668544D

    申请日：1970-09-03

    申请人： VARIAN ASSOCIATES

    发明人： LIEN ERLING L

    IPC分类号： H01J25/38 ,  H01J25/34

    CPC分类号： H01J25/38

    摘要： A slow wave tube is disclosed wherein the signal to be amplified and an harmonic thereof are applied concurrently over at least a portion of the slow wave circuit to increase the RF conversion efficiency of the tube. In a preferred embodiment, the harmonic wave energy is extracted from the output of the tube and fed back onto the slow wave circuit. The slow wave circuit portion, which provides the harmonic interaction with the beam, preferably has a dispersive characteristic such that the harmonic wave energy has a higher phase velocity than the fundamental wave energy for enhanced RF conversion efficiency.

    摘要翻译： 公开了一种慢波管，其中待放大的信号及其谐波同时应用在慢波电路的至少一部分上以增加管的RF转换效率。 在优选实施例中，谐波能量从管的输出提取并反馈到慢波电路。 提供与波束的谐波相互作用的慢波电路部分优选地具有色散特性，使得谐波波能量具有比基波能量更高的相位速度，以提高RF转换效率。

    High-efficiency velocity modulation tube employing harmonic prebunching
    3.
    发明授权
    High-efficiency velocity modulation tube employing harmonic prebunching 失效
    采用和谐预处理的高效率调速管

    公开(公告)号：US3622834A

    公开(公告)日：1971-11-23

    申请号：US3622834D

    申请日：1970-04-15

    申请人： VARIAN ASSOCIATES

    发明人： LIEN ERLING L

    IPC分类号： H01J25/10 ,  H01J23/20

    CPC分类号： H01J25/10

    摘要： A velocity modulation tube is disclosed. The tube includes beam field interaction circuits arranged along the beam path in the following order: prebuncher, floating buncher resonator, and output circuit. The prebuncher, buncher and output circuits are all tuned for a fundamental mode of resonance in the vicinity of the pass band of the tube. An abnormally long drift space, i.e., greater than 90* and preferably about 120* of reduced plasma angle is provided between interaction gaps of the prebuncher and next succeeding floating buncher, whereby the second harmonic space charge component of the resultant current density modulation of the beam produces favorable bunching of the electrons at the entrance of the buncher cavity to obtain enhanced conversion efficiency for the tube.

    Permanent magnet beam focus structure for linear beam tubes
    6.
    发明授权
    Permanent magnet beam focus structure for linear beam tubes 失效
    线性束管的永久磁铁束聚焦结构

    公开(公告)号：US3896329A

    公开(公告)日：1975-07-22

    申请号：US29111772

    申请日：1972-09-21

    申请人： VARIAN ASSOCIATES

    发明人： LIEN ERLING L

    IPC分类号： H01J23/087 ,  H01J25/34

    CPC分类号： H01J23/087

    摘要： A light-weight permanent magnet beam focus structure for linear beam microwave tubes, such as klystrons and traveling wave tubes, employs a pair of centrally apertured generally cylindrical pole pieces disposed at opposite ends of the tube. The pole pieces are energized by means of a pair of high BXH product, radially polarized, permanently magnetized rings which are surrounded by a magnetically permeable cylindrical yoke. The magnet material is magnetized and loaded such as to have a ratio of Bm/Hm within the range of 0.8 to 1.3. Suitable magnets include the rare earth cobalt magnets, especially samarium cobalt.

    Velocity modulation tube employing cascaded harmonic prebunching
    7.
    发明授权
    Velocity modulation tube employing cascaded harmonic prebunching 失效
    使用CASCADED HARMONIC PREBUNCHING的速度调节管

    公开(公告)号：US3594606A

    公开(公告)日：1971-07-20

    申请号：US3594606D

    申请日：1970-04-15

    申请人： VARIAN ASSOCIATES

    发明人： LIEN ERLING L

    IPC分类号： H01J25/12

    CPC分类号： H01J25/12

    摘要： A velocity modulation microwave tube is disclosed. The tube includes an input circuit, an output circuit and a penultimate resonator circuit disposed along the beam. A pair of second harmonic floating prebuncher resonators are disposed along the beam path intermediate the input circuit and the penultimate resonator. The second harmonic resonators improve the bunching of the beam by moving electrons from the interbunch region of the beam into the bunched region of the beam. A resonator tuned for a fundamental mode of resonance at the fundamental frequency of the tube is interposed between the pair of second harmonic resonators for rebunching the electron bunches of the beam downstream of the first second harmonic cavity. The second harmonic resonators with the fundamental resonator interposed therebetween substantially improve the conversion efficiency of the microwave tube.