公开(公告)号：US20180337016A1

公开(公告)日：2018-11-22

申请号：US15777977

申请日：2016-12-14

Applicant: NEC Network and Sensor Systems, Ltd.

Inventor： Norio MASUDA ,  Takashi NAKANO

IPC: H01J23/24 ,  H01J25/42 ,  H01P3/123 ,  H01P11/00

CPC classification number: H01J23/24 ,  H01J23/28 ,  H01J25/42 ,  H01P3/123 ,  H01P11/002

Abstract: Provided are a slow wave circuit and a traveling wave tube suitable for an increase in fineness with regard to processing beam holes, and suitable for higher frequencies. A slow wave circuit (10) includes a meandering waveguide (1) and a beam hole (2) that pierces the meandering waveguide (1), and the cross-section of the beam hole (2) in the direction orthogonal to the long direction is in the shape of a polygon having a larger number of sides than a quadrilateral.

公开(公告)号：US20160293376A1

公开(公告)日：2016-10-06

申请号：US14868522

申请日：2015-09-29

Applicant: NEC Network and Sensor Systems, Ltd.

Inventor： Takashi NAKANO

IPC: H01J23/24 ,  H01J25/34

CPC classification number: H01J23/24 ,  H01J25/34

Abstract: When a plurality of amplifiers for transmission source are used, a related traveling wave tube requires a large space for arranging a plurality of the traveling wave tubes. In this respect, a traveling wave tube of an exemplary embodiment of the present invention includes two meander-shaped waveguides formed to have the same meander pitch, wherein the meander-shaped waveguides are assembled together such that beam holes of one of the meander-shaped waveguides and those of the other one are arranged on the same axis, and one of the meander-shaped waveguides is shifted with respect to the other one by a quarter folding period in the wave traveling direction.

Abstract translation: 当使用多个用于发送源的放大器时，相关的行波管需要用于布置多个行波管的大的空间。 在这方面，本发明的示例性实施例的行波管包括形成为具有相同曲折间距的两个曲折形波导，其中曲折形波导组装在一起，使得曲折形状波导 波导管和另一个的波导管布置在相同的轴线上，并且其中一个曲折波导相对于另一个弯曲波导在波浪传播方向上相移四分之一的折叠周期。

公开(公告)号：US20200020999A1

公开(公告)日：2020-01-16

申请号：US16494479

申请日：2018-03-23

Applicant: NEC Network and Sensor Systems, Ltd.

Inventor： Akihiko KASAHARA ,  Takashi NAKANO

IPC: H01P1/08

Abstract: An invention comprises: a circular waveguide that has a cylindrical section having a circular pipe conduit with a circular shaped cross section, and side wall sections joined to the both sides in an axial direction of the cylindrical section; a first rectangular waveguide that has a first rectangular pipe conduit with a rectangular shaped cross section and that is joined to one of the side wall sections so that the first rectangular pipe conduit communicates with the circular pipe conduit; a second rectangular waveguide that has a second rectangular pipe conduit with a rectangular shaped cross section and that is joined to the other of the side wall sections so that the second rectangular pipe conduit communicates with the circular pipe conduit; and a dielectric plate that is configured as a plate shape, is disposed in the circular pipe conduit, and is airtightly held to the cylindrical section, wherein the circular waveguide has a plastically deformable section that is plastically deformable so that at least the length in an axial direction of the circular waveguide can be changed.