PILLBOX TYPE TRANSMISSION WINDOW AND MANUFACTURING METHOD THEREOF

To suppress a ghost mode in a pillbox type transmission window.SOLUTION: A pillbox type transmission window comprises an input/output window of a microwave tube. The pillbox type transmission window comprises: a disc-shaped member 1 in which a metalize layer is formed in an outer peripheral portion of disc-shaped ceramics; a pair of annular members 2 consisting of a metal having an outer diameter substantially equal to that of the disc-shaped member 1 and integrated with the outer peripheral portion of the disc-shaped member 1 while being disposed with the disc-shaped member 1 interposed from both sides; a cylindrical member 3 consisting of a metal having an inner diameter substantially equal to the outer diameter of the pair of annular members 2 and the disc-shaped member 1 and holding the pair of metal components and the disc-shaped member inside; and a regulation member 4 by which, between the annular members and the cylindrical member, the rotations thereof are suppressed.SELECTED DRAWING: Figure 1 【課題】 ピルボックス型伝送窓におけるゴーストモードを抑制することを目的とする。【解決手段】ピルボックス型伝送窓は、マイクロ波管の入出力窓を有するピルボックス型伝送窓であって、円板状のセラミックスの外周部分にメタライズ層が形成された円板状部材１と、該円板状部材１と略同一の外径を有する金属により構成され、該円板状部材１を両側から挟んで配置されて前記円板状部材１の外周部部分と一体化された一対の環状部材２と、該一対の環状部材２と前記円板状部材１との外径と略等しい内径を有する金属により構成され、これら一対の金属部品および前記円板状部材を内側に保持する筒状部材３と、前記環状部材と前記筒状部材との間でこれらの回転を抑制する規制部材４とを有する。【選択図】図１