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    • 2. 发明授权
    • Tunable coaxial magnetron
    • 可控同轴磁铁
    • US3590312A
    • 1971-06-29
    • US3590312D
    • 1969-04-16
    • LITTON PRECISION PROD INC
    • BLANK DAVID EDWARDTHORNBER GEOFFREYWYNN ANTHONY PETER
    • H01J23/207H01J25/50
    • H01J23/207
    • A coaxial magnetron is provided in which the annular outer coaxial cavity is external of the high vacuum region containing the anode, vanes, cathode, and interaction region. The coaxial cavity is electromagnetically coupled to alternate pairs of the vanes conventionally through slits in the sleevelike anode wall, but is physically separated or isolated therefrom by a ceramic sleeve, suitably alumina, which seals the vacuum within the anode wall but which is permeable to electromagnetic energy. Moreover, the coaxial cavity is maintained under pressure at least as great as atmospheric pressure and, suitably, 35 p.s.i. a. (absolute) with an insulating gas, suitably sulfur hexafluoride. A plurality of dielectric vanes are symmetrically disposed about, mounted rotatably through, and proximate to an annular cavity wall. These vanes have a stem forming the shaft connected centrally of the vanes, together resembling the letter T, mounted with the longer axis of the vane perpendicular to the axis of the cavity. These vanes are connected through the supporting wall by the stemlike portion which has its axis parallel generally to the axis of the cavity. Suitably the dielectric vanes consist of alumina, a high purity aluminum oxide ceramic. The vanes are positionally phased and means are connected to each of the plurality of vanes in synchronism whereby the magnetron is dithered at relatively high rates. This latter means and housing internally are included within the same insulating gas atmosphere as the cavity so that no moving parts extend through a pressure differential.
    • 3. 发明授权
    • Solderless gas sealed waveguide connector
    • 无气密封波导连接器
    • US3587010A
    • 1971-06-22
    • US3587010D
    • 1970-01-12
    • LITTON PRECISION PROD INC
    • WALSH JOHN JAMES
    • H01P1/04H01P5/08H01P3/14
    • H01P5/082H01P1/042Y10S285/903
    • In this solderless waveguide connector a clamp, formed by two complementary half-ring sections, defines a passage which collars the end portion of a section of elliptical waveguide; the waveguide being of the type which contains ridges which extend across the width and sides of the waveguide. The end of the waveguide section is formed at the middle of one such transverse ridge. A recessed seat or rim about the passage in the front face of the clamp abuts and seats the outer surface of a portion of a transverse ridge. A waveguide transition section with a microwave passage therethrough includes a protruding lip portion which surrounds the microwave passage. The transition is fastened to the clamp so that the protruding lip engages the inner surface of the aforementioned ridge portion of the waveguide so that the waveguide at its end is firmly clamped between the clamping means and the waveguide transition. A cap having a hollowed-out portion and an aperture or waveguide passage through its rear wall fits over the waveguide, is fastened at its front end to the waveguide transition, and within the hollow encloses the clamp. A first Oring seal located inside and toward the rear of the cap tightly abuts each of the surfaces of the cap, the waveguide, and the back surface of the clamp. A second O-ring seal surrounds an outer rim surface of the transition section and abuts both the transition section and a front inner rim surface of the cap.