Title: Coupled cavity type slow-wave structure for use in travelling-wave tube

Abstract: A coupled cavity type slow-wave structure for use in a travelling-wave tube, in which there are provided at a given spacing a plurality of partition walls within a circular wave-guide, with dielectric cylindrical pieces or spacers being confined between each pair of the aforesaid partition walls and in concentric relation to central apertures defined in the aforesaid partition walls. The dielectric cylindrical pieces are provided with holes slightly larger than the aforesaid central apertures in the partition walls, and the aforesaid central apertures are adapted to pass electron beams therethrough. In addition, the partition walls each have coupling slots, through which adjoining cavities are in communication with each other. The dielectric cylindrical pieces are brazed to the adjacent partition walls in gas-tight relation. This insures an accurate spacing between each pair of partition walls and eliminates thermal deformation in those portions of the partition walls which surround the aforesaid central apertures, particularly the portions encircled interiorly of the dielectric cylindrical pieces.

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Inventors: Horigome, Toshinori (Tokyo, JA)
Hamada, Sadanori (Tokyo, JA)
Sato, Takami (Tokyo, JA)

Application Number: 635734
Filing Date: 1975-11-26
Publication_date: 1977-03-22
Assignee: Nippon Electric Company, Ltd. (Tokyo, JA)
Primary Class(es): 315/3.5 315/39.3, 333/157
Other Classes:
US Patent Ref:

2970242	Jan, 1961	Jepsen	333/31.
3153767	Oct, 1964	Kyhl	315/3.
3181024	Apr, 1965	Sensiper	315/3.
3471738	Oct, 1969	Bert	315/3.
3602766	Aug, 1971	Grant	315/3.
3889148	Jun, 1975	Gross	315/3.
3909651	Sep, 1975	Baker et al.	315/3.
3924151	Dec, 1975	Gross	315/3.

Other Refs:
Primary Examiner: Chatmon, Jr., Saxfield
Assistant Examiner:
Attorney: Ostrolenk, Faber, Gerb & Soffen