Title:
SPIRAL TRAVELLING WAVE TUBE FOR REDUCING GAIN VARIATION
Document Type and Number:
Japanese Patent JPS5774943
Kind Code:
A
Abstract:
In a traveling wave tube (TWT) using an interaction circuit of the helix-derived type, the gain of the tube normally varies significantly over the passband. The invention provides a simple method of reducing the gain variation together with a reduction in the noise power density produced at the output of the tube. This is accomplished by affixing a nonresonant terminated transmission line such as a meander line on at least one of the dielectric rods used to support the helix.
Inventors:
AANESUTO ARAN KONKESUTO
Application Number:
JP13620481A
Publication Date:
May 11, 1982
Filing Date:
September 01, 1981
Export Citation:
Assignee:
VARIAN ASSOCIATES
International Classes:
H01J23/30; H01J25/36; H01J23/26; (IPC1-7): H01J23/26; H01J25/34
Domestic Patent References:
| JPS56103849A | 1981-08-19 | |||
| JPS4821986A | ||||
| JPS5399758A | 1978-08-31 | |||
| JP55111155B |