DE1766711B1 - CONNECTING A COAXIAL CABLE TO A LOW WAVE CONDUCTOR - Google Patents

Description

1 2

The invention is based on a connection of a shaped inner conductor 7 coaxial cable wound around in a helical manner with a slow waveguide, which is kelt, and the one on the inner wall of the outer loop an inner and an outer conductor are attached by means of a dielectric 9. A have, wherein the outer conductor of the coaxial cable terminal 71 of the inner conductor 7 extends through with the outer conductor of the slow waveguide 5 openings 12 and 11 in the dielectric 9 and is connected and the inner conductor of the Koaxialka- the outer conductor 5, with its end to a umbels is bent to the inner conductor of the slow-swept L-shape. The bent end conductor connected through openings section of the connection 71 is threaded, the one in the outer conductor of the slow-wave bore 72 for receiving a conical outer conductor and are formed in a dielectric, io thread 6 equipped on the connection the the inner and outer conductors of the long end of the inner conductor 1 of the coaxial cable vorgesamwellenleiters separates from each other. see is.

Such a connection of a coaxial cable with the upper surface of the bent end section of a slow waveguide is known (German des connection 71 of the strip-shaped Innenlei patent specification 853 017). The inner conductor of the 15 ters 7 is flat with the contact surfaces between the coaxial cable via a resilient contact and outer conductor 5 and the bearing 4, a melting pin is galvanically connected to the end of a dielectric 10, which carries the inner conductor 1, slow waveguide. The outer conductor can be made of glass or ceramic, so that the coaxial cable is firmly connected to a metallic tube at the same time as an airtight connecting connection pipe, which can serve the slow waveguide of the coaxial cable. When connecting the centrically surrounds. Such a connection is structurally expensive to construct slow waveguides with the coaxial cable of the above. The time required for their manufacture is considerable when the outer conductor 2 is in the * position. Bearing 4 screwed in with its external thread 3, %

The object of the invention is to create a simple connection while at the same time the external thread 6 in the connection possibility between a coaxial cable 25 threaded bore 72 in the bent end and a slow waveguide. Section of the inverted L-shaped connection 71 of the At a connection of the initially mentioned inner conductor 7 is screwed, whereby electrical training this object is achieved according to the invention see and mechanical connections between the achieved by that both the outer conductor and the outer conductors 2 and 5 and between the inner conductors 1 inner conductors connected by screw connections 30 and 7 are achieved at the same time, which differ in the thread pitch. Since the external thread 6 at the end of the internal thread is a particularly simple and effective conductor 1 of the coaxial cable towards the end, a conical type of connection which, moreover, can be established quickly, a tight connection is possible in this case. Furthermore, with such a connection, good impedance matching can be achieved quite easily in the larger diameter root section by virtue of the fact that the diameter of the bore 72 in the bent end section of the outer conductor and the dielectric of the slow connection 71 of the inner conductor 7 made, and holes drilled accordingly with the same waveguide, the rigid connection between the inner conductor will be selected. Head 1 and the inner conductor 7 improved.

The connection of the inner conductor of the 40. Due to the different gradients of the outer slow waveguide, L-shaped bent threads 3 and 6, it is possible to connect the. This further facilitates the connection. Inner conductor 7 against the coaxial cable or from the-The invention will be pressed on the basis of a sem to thereby see the contact between the inner conductor 1 and the inner conductor 7 to a wave deflection line for a Ultra broadband cathodic 45 improve. The connection is designed so that the ray tube using a flat, helical, inverted L-shaped terminal 71 of the strip-shaped conductor strip and a conductor is brought into contact with the dielectric 10 on an axial cable in connection with the drawing when the external thread 3 on the wrote. Outer conductor 2 is completely screwed into bearing 4 - it shows 50.

F i g. 1 shows a vertical section through a connection

Formation according to the invention, connection can be achieved by modification

Fig. 2 is a section on line II-II of Fig. 1, the diameter of the through hole 12 in the

F i g. 3 shows, on an enlarged scale, a vertical dielectric 9 and the through-hole 11 in FIG

cut through a detail of FIG. 1 and 55 to the outer shielding conductor 5 as well as by changing

4a and 4b a top view and a side of the dimensions of the flat, helical

view of the L-shaped curved inner lei-shaped strip. The impedance can also

ters of the slow waveguide. are influenced by the appropriate choice of

In the drawing, an inner conductor 1 of a length of the externally threaded portion 6 at the end of the

Signal transmission coaxial cable and an outer 60 inner conductor 1.

Shielding outer conductor 2 shown, it is possible to connect the coaxial cable with the flat, to be provided with an external thread 3 at one end of helical strips at right angles is. A bearing 4 to accommodate the outer binding, while at the same time a satisfactory Thread 3 of the outer shielding conductor is fixed to impedance matching. The connection is an outer conductor 5 of a slow-wave line 65 particularly suitable for use in a long-haul. Inside the outer conductor 5 is a screw waveguide which is inserted into a cathode ray tube A flat band is arranged in the form of ben lines, which is to be used from tightly, as by use a dielectric 8, around which a grazing connection is possible, a signal

feed directly to the deflection line from a coaxial cable in the transverse direction, d. H. in vertical Towards the tube. The connection can not only be used in the deflection line for a traveling wave cathode ray tube where only a flat, helical strip is used but also with slow waveguides of other constructions.

As described above, the connection of a signal transmission coaxial cable with a low-speed waveguide can be achieved with sufficient matching, and the impedance at the connection point can be easily adjusted by carefully selecting the dimensions of the bores in the shield conductor and the dielectric of the slow waveguide. Since the core wire of the coaxial cable is in the connection of the slow waveguide is screwed in at the same time as the outer conductor of the Coaxial cable screwed into part of the wall of the outer shield conductor of the delay circuit is, can also, according to the invention, a highly rigid electrical and mechanical connection between the coaxial cable and the slow waveguide are established by the different Thread pitches of the respective thread is still improved.

Claims (2)

Patent claims: 1. Connection of a coaxial cable with a slow waveguide, each with an inner and outer conductor, the outer conductor of the coaxial cable having the outer conductor of the slow waveguide is connected and the inner conductor of the coaxial cable is connected to the inner Head of the slow waveguide is connected through openings in the outer conductor of the slow waveguide and are formed in a dielectric that separates the inner and outer conductors of the slow waveguide from one another, thereby characterized in that both the outer conductor (2, 5) and the inner conductor (1,7) via screw connections (3, 4 or 6, 71) are connected, which differ in the thread pitch. 2. A compound according to claim 1, characterized in that the connection of the inner Head (7) of the slow waveguide is bent L-shaped. 1 sheet of drawings