SU358970A1 - Travelling-wave tube - Google Patents

Description

The invention relates to electronic engineering, in particular, to a modeled systems for traveling wave tubes (TWTs) with predetermined switching properties.

A known slow-loop system is a ring-rod type system with rods (stubs) connected in parallel and perpendicular to the bridges between its rings. On rods of rods there is a shorting plane placed in such a way that at the center frequency of the selected working range the length of the rods is equal to a quarter of the wavelength of free space. Such a slow-wave system, unlike the conventional ring-rod system, is not a low-pass filter, but a band-pass filter.

However, in such a system, parasitic generation is possible at frequencies outside a specified operating wavelength range, and also it has large transverse dimensions.

The purpose of the invention is to suppress undesirable oscillations and to obtain a retarding system with small transverse dimensions. The goal is achieved by introducing a high reactive damping at frequencies outside the working wavelength range, and

also a small dispersion of the properties of the slow-wave system in the operating range.

The proposed slow-wave system with quarter-wave rods connected to the jumpers of the slow-wave system through its quarter-wave segments or through lengths (odd odd number of quarter-waves of slow waves differs from the known one in that the rods are made in the form of asymmetrical strip lines formed by rectangular wires, curved along the screen of the slowing-down system and finished on Hero, aimcno of connected rods and their transverse dimensions are selected after half a predetermined reactive damping diapazssha of frequencies.

The use of such a filter in the TWT reduces the level of parasitic generation and increases the stability of its output characteristics.

The drawing shows the proposed delay system.

The retarding system is wound from two copper tubes and formed in the form of two halves 1. Both halves of the spa- ry are through cuffs 2 and separating ceramics 3. The stripe line that forms the loop has an internal core in the form of a rectangular conductor, which is circumferential and under From the angle of the pin 5, which is connected with pin 5, passing through the hole in the screen, JffiB. The pin is connected with the L-shaped element, which is attached to the cuff 2.

The strip line is formed by tacles in 1h of the HOBepxaqcTb casing 7 and the surface of screen 6. Both surfaces and rectangular conductor 4 are concentric in cross section of the retarding system. At the end, the rectangular arched 4 is short-circuited by plate 8. Slow-down © acTeiiaJ is fixed in screen 6 with the help of screws SN 9 and ceramic serrated insulators, which are attached to (screen 10).

Claims (1)

Invention Formula   waves with a slow-motion ring-ring system — with a quarter-wave ishash, formed by external walls in internal shields with a jumper and located one relative to the other at a distance of one-quarter slow-wave, differing from the fact that, in order to suppress undesirable species, it oscillated between external and a curved but a rectangular conductor is inserted in the inner shields, connected by one condom through a pin to the retarding system, and the other to the jumper. . ... Z., “CZ.