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    • 1. 发明授权
    • Coupled cavity type traveling wave tube
    • 耦合腔型行波管
    • US4414486A
    • 1983-11-08
    • US281297
    • 1981-07-07
    • Kunio TsutakiTakao Kageyama
    • Kunio TsutakiTakao Kageyama
    • H01J23/24H01J23/30H01J25/34
    • H01J23/30
    • Two coupled cavity type, slow-wave circuits are separated, with a drift space section between them. An electron beam and an electromagnetic wave, which do not interact with each other, over a certain length, are in the drift space. A waveguide type non-reflective termination structure has a waveguide axis directed in the same direction as the electron beam and is coupled to the cavity, slow-wave circuits with respect to a high frequency wave disposed in the drift space section. With such a construction, a traveling wave tube is formed with a PPM focusing and with a non-reflective termination structure includes a waveguide member having a through-hole for passing an electron beam and two waveguides formed on the opposite sides of the through-hole. A lossy ceramic member is disposed within one of the two waveguides for a forwardly traveling wave and another lossy ceramic member is disposed in the other waveguide for a backwardly traveling wave. Each of the two waveguides has one end sealingly closed with tapered ceramic members of the forwardly traveling wave and for the backwardly traveling wave secured on the respective waveguide walls. During its propagation, an electromagnetic wave is perfectly absorbed by the lossy ceramic members.
    • 两个耦合腔型,慢波电路分开,它们之间有漂移空间部分。 在一定长度上彼此不相互作用的电子束和电磁波在漂移空间中。 波导型非反射端接结构具有与电子束相同方向的波导轴,并且耦合到空腔,相对于设置在漂移空间部分中的高频波的慢波电路。 通过这样的结构,用PPM聚焦形成行波管,并且非反射性终端结构包括具有用于通过电子束的通孔的波导构件和形成在通孔的相对侧上的两个波导 。 在两个波导中的一个波导内设置有损耗的陶瓷构件用于向前行进的波,另一个有损耗的陶瓷构件设置在另一波导中用于向后行波。 两个波导中的每一个具有一个端部,其密封地与前行波的锥形陶瓷构件和固定在相应的波导壁上的向后行波密封。 在其传播期间,电磁波被有损耗的陶瓷构件完全吸收。
    • 2. 发明授权
    • Four-cavity velocity modulation tube
    • 四腔速度调制管
    • US3974417A
    • 1976-08-10
    • US635178
    • 1975-11-25
    • Takao KageyamaHiroshi Kato
    • Takao KageyamaHiroshi Kato
    • H01J23/16H01J23/20H01J25/10
    • H01J25/10
    • In a four-cavity velocity modulation tube comprising an electron gun assembly, an input cavity, a pre-intermediate cavity, a post-intermediate cavity, an output cavity, a collector assembly and drift tubes interposed between adjacent ones of said cavities, said input cavity is tuned to the proximity of the lower end of the operating passband of said velocity modulation tube, said pre-intermediate cavity is tuned to the proximity of the upper end frequency of said operating passband, said post-intermediate cavity is tuned to a fundamental resonant frequency that is higher than the upper end frequency of said operating passband but lower than a frequency which is 1.6 times as high as the center frequency of said operating passband, the normalized length of all of said drift tubes being smaller than 90 degrees in terms of the reduced plasma angle, and the normalized length of the drift tube positioned between said pre-intermediate cavity and said post-intermediate cavity being larger than the normalized lengths of the other drift tubes.
    • 在包括电子枪组件,输入腔,预中间腔,后中间腔,输出腔,收集器组件和插入在相邻腔之间的漂移管的四腔速度调制管中,所述输入 空腔被调谐到所述速度调制管的工作通带的下端附近,所述预中间腔被调谐到所述工作通带的上端频率附近,所述后中间腔被调谐到基极 谐振频率高于所述工作通带的上端频率但低于所述工作通带的中心频率的1.6倍的频率,所有漂移管的归一化长度小于90度 位于所述预中间腔和所述后中间腔之间的漂移管的归一化长度大于 其他漂移管的归一化长度。
    • 4. 发明授权
    • Wideband multi-cavity velocity modulation tube
    • 宽带多腔速度调制管
    • US4019089A
    • 1977-04-19
    • US669648
    • 1976-03-23
    • Takao KageyamaHiroshi Kato
    • Takao KageyamaHiroshi Kato
    • H01J23/20H01J25/10
    • H01J25/10
    • A multi-cavity type velocity modulation tube, operable in the K-band above 10 GHz and having input, pre-buncher, buncher and output cavities which are respectively tuned to frequencies that are higher than the upper end of the operating pass band; near the upper end of the operating pass band and lower than the resonant frequency of the input cavity; higher than the resonant frequency of the input cavity; and within the operating pass band of the tube. The input cavity Q-value is lower than that of the prebuncher cavities.Preferably first and second prebuncher and first and second buncher cavities are provided, the second prebuncher and at least one of the bunchers are unloaded and the second prebuncher is tuned to a frequency in the vicinity of the lower end of the operating pass band.The design yields a low cost tube having a significantly improved gain-bandwidth product.
    • 多腔型速度调制管,可在10GHz以上的K波段中操作,并具有分别调谐到高于工作通带上端的频率的输入,预整形器,聚束器和输出腔; 靠近工作通带的上端,低于输入腔的谐振频率; 高于输入腔的谐振频率; 并在管的工作通带内。 输入腔Q值低于预浸泡腔的值。
    • 9. 发明授权
    • Microwave tube with improved output signal extracting structure
    • 微波管具有改进的输出信号提取结构
    • US4682076A
    • 1987-07-21
    • US755412
    • 1985-07-15
    • Takao KageyamaRyuzo Orui
    • Takao KageyamaRyuzo Orui
    • H01J23/40H01J23/36H01J23/50H01J25/00
    • H01J23/50
    • A helix type traveling wave tube comprises an evacuated envelope containing an electron gun assembly at one end thereof for forming and projecting a beam of electrons over an elongated beam path to an electron collector electrode at the opposite end of the envelope. A helix slow-wave circuit is arranged along the beam path intermediate the electron gun and the beam collector for electromagnetic interaction with the beam. In order to extract an amplified signal from the downstream end of the slow wave circuit, there is provided an coaxial line including an outer conductor air-tightly fixed at one end thereof to the evacuated envelope and an inner conductor having one end connected to an output end of the slow wave circuit. An output waveguide is air-tightly fixed to the other end of the coaxial line outer conductor in such a manner the other end of the coaxial line inner conductor extending into the output waveguide. Further, a ceramic hollow cylindrical member is positioned in the output waveguide to surround the other end of the coaxial line inner conductor, and is air-tightly fixed at opposite ends thereof to an inner wall of the output waveguide.
    • 螺旋型行波管包括在其一端包含电子枪组件的真空外壳,用于在细长的光束路径上形成并将电子束投射到在信封的相对端处的电子收集器电极。 沿着电子枪和束收集器之间的光束路径布置螺旋慢波电路以与光束进行电磁相互作用。 为了从慢波电路的下游端提取放大的信号,提供了一个同轴线,包括一个外部导体,该外部导体在其一端气密地固定在真空外壳上,内部导体的一端连接到输出端 慢波电路结束。 输出波导以这样的方式气密地固定到同轴线外导体的另一端,同轴线内导体的另一端延伸到输出波导中。 此外,陶瓷中空圆柱形构件位于输出波导中以包围同轴线内导体的另一端,并且在其相对端气密地固定到输出波导的内壁。