DE1541918B2 - WALKING FLEDROOM WITH A PERIODIC DELAY LINE FROM SUCCESSIVE CAVITY RESONA GATES - Google Patents

Description

1 2

The invention relates to a traveling wave tube with can exist and that, on the other hand, the actual

a periodic delay line from in beam assembly borrowed the electrical connections

direction of successive cavity resonators, between the coupling loop parts, namely between

which see through inside a hollow pipe in the same way the fingers and the longitudinal conductors, simply here-

At intervals, with central openings for 5 are to be delivered.

the passage of the electron beam provided transverse In a preferred embodiment, the

plates are formed and the hollow pipe walls of which are hollow pipes made of alternately one on top of the other.

electrically in series by means of symmetrical around the centered transverse plates, discs and spacer rings,

central openings of distributed coupling loops, one of which is connected between each transverse plate

the ones that are inserted through lateral holes in the cross ίο and each disc are built up and have

Reach through the plates without contact. the disks forming the inner wall of the hollow tube

Delay lines with coupled cavity and spacer rings have the same inner diameter

Theoretically, resonators guarantee that on. With this arrangement can advantageously

In the case of high-performance traveling wave tubes, they electrically remove the delay line by stacking them on top of one another

excellent work. 15 of prefabricated transverse panels, slices and

A delay line is already known to be built up to the desired length

(The Institution of Electrical Engineers, Paper.

No. 2681R, author A. F. Pearce, December Preferably, each finger of a disc has one 1958), in the case of a line with a return hole, which has a hole in each traverse Grinding or as a plate with negative mutual inductance and a hole in one finger each widens Coupled line designated execution- the disc is axially aligned and is in each axial form the transverse plates S-shaped coupling loops align a row of holes with a straight conductor. A number of these loops, each of which are set. The longitudinal can then advantageously Viewed transversely, a sinusoidal conductor after assembling the individual transverse course forms part of each of the transverse plates, rings and discs simply by means of a curse plate and lies between the inner part of the tend row of holes pushed through or Transverse plate that forms the central opening for the beam - the latter is pushed onto the longitudinal conductor Passage surrounds, and an outer part close to and connected to the respective fingers. Hollow pipe wall. In a preferred embodiment, they are adjacent coupling devices grinding a transverse plate curved in the opposite direction. 30 longitudinal conductors with a tight fit in the holes of the In another as a line with not backward fingers and point the bores of the transverse plates led grinding designated embodiment is a larger diameter than the bores of the a number of semicircular coupling loops on each finger. Advantageously, in the case of the to-transverse plate assigned at both ends with the assembly of such an arrangement in easier Hohlrohrwandung are connected and by 35 ways a transverse plate, a spacer ring, a disc Slits or bores in the transverse plates run with fingers, a spacer ring and again a transverse pin. plate in succession to the required

It is also a traveling wave tube of the initially number of longitudinal conductors, preferably in a hollow tube named genus known (USA patent specification an inner diameter equal to the outer diameter 3 205 398, Fig. 10), which also has a number of 40 knives of the plates, rings and disks, semi-circular Coupling loops of each transverse plate are assigned until those for the respective delay are assigned is the number of resonance hollow pipe walls required at both ends with the hollow pipe are electrically connected and reached by men. A major advantage of these bores the transverse plate run without contact. leadership is that this work of

The well-known delay lines can, although semi-skilled workers can be carried out,

the same they are electrically excellent, only with considerable advantage are the holes in the fingers

be made with a lot of effort, because for a lot of them are arranged at their free ends, because then the

number of transverse plates in each case a number of half-sentence inductances forming fingers completely into the

circular coupling loops are included on the inside of the hollow pipe - respective coupling loops,

50 The longitudinal conductors are preferably rods or tubes

need to be soldered. with a circular or other transverse

The object of the invention is to create a cut. However, you can also use an angle profile on a traveling tube of the generic type mentioned at the outset, or from cross-sectional shapes that are too suitable whose delay line are made with significantly less bent metal sheets, so that they meet the required effort can be manufactured in a simpler manner 55 lent stiffness. Advantageously can can. , the longitudinal conductors also consist of a number of parallel

For this purpose, the invention provides that the switched individual conductors exist or a lead coupling loop of fingers that alternately do not conduct the precipitation on a support the transverse plates in the hollow tube wall in front of the material of the required rigidity circular disks point radially to 60.

protrude inside, and from electrical to axially up- The invention is described below with reference to the

successive fingers connected longitudinal conductors drawing for example described; in this shows

are formed. F i g. 1 is a plan view of a ring of the invention

A significant advantage of the invention is the delay line according to the invention,

in the fact that on the one hand already before the assembly 65 F i g. 2 is a plan view of a transverse plate with a

the delay line parts of the coupling loops, central opening and six equally spaced

namely the fingers, with parts of the inner hollow tube arranged lateral holes,

wall are connected or from one piece F i g. 3 is a top view of a disk with six

equally spaced, inwardly protruding fingers and

F i g. Figure 4 is a longitudinal section of part of an assembled delay line showing the ends have broken away.

According to the drawing, the delay line has a stack of parts assembled in alignment with their bores, which are shown in FIGS. 1 to 3 are shown individually. This stack consists of simple rings A (Fig. 1), transverse plates B having a central opening Bl for the passage of the Eelektronenstrahls the tube and six arranged on a circle bores Bl (Fig. 2) and annular discs C (Fig. 3), which have six radially inwardly projecting projections C1, hereinafter referred to as fingers Cl, each of which has a bore C 2 near its inner end for receiving a longitudinal conductor.

All parts A, B and C have the same outside diameter. The ring A has a relatively large inner diameter, which corresponds to that of the inner circumference of the disc C from which the radial fingers Cl protrude. The transverse plate B has a relatively small inside diameter large enough to allow the electron beam of the tube to pass through. This electron beam is generated by an electron beam source (not shown) of the tube which is provided in the usual way and runs through the delay line to a collector electrode (not shown). At its ends, the delay line has known coupling-in and coupling-out parts (not shown). The bores B 2 lie on a circle with the same diameter as that on which the bores C 2 are arranged. However, the bores B1 have a larger diameter than the bores C 2.

The parts A, B and C are put together to form a stack (FIG. 4), the bores B 1 being aligned and the centers of the bores B1 and C 2 being on six alignment lines. R denotes rods with essentially the same diameter as the bores C 2, which are fitted closely into these bores and pass through the bores B 2 without touching their edges.

According to the drawing, the delay line shown is a symmetrically coupled arrangement which is electrically equivalent to the symmetrically coupled arrangements according to AF P ear ce. The delay line according to the invention, however, has a much simpler mechanical structure in which the rectangular loops each include a rod length between two successive disks C and two fingers C1 of this disk projecting radially inward. The resonance frequency can be determined by a suitable choice of the size of the bore in the ring A , which is very easy to do.

Claims (10)

Patent claims: 1. Traveling wave tube with a periodic delay line consisting of cavity resonators following one another in the direction of the beam, which are formed by transverse plates with central openings for the passage of the electron beam arranged at equal intervals within a hollow pipeline and whose hollow tube walls are electrically connected in series by means of coupling loops symmetrically distributed around the central openings which reach through the lateral bores of the transverse plates without contact, characterized in that the coupling loops of fingers (Cl) protrude radially inward from circular disks (C) provided alternately with the transverse plates (B) in the hollow tube wall, and from electrically with Axially successive fingers connected longitudinal conductors (R) are formed. 2. Traveling wave tube according to claim 1, characterized in that the hollow pipe consists of alternately stacked transverse plates (B), circular disks (C) and spacer rings (A), one of which is inserted between each transverse plate (B) and each disk (C) , is constructed and that the discs (C) and spacer rings (A) forming the inner wall of the hollow tube have the same inner diameter. 3. Traveling wave tube according to claim 1 or 2, characterized in that each finger (Cl) of a disc (C) has a bore (C 2) with a bore (B 2) in each transverse plate (B) and a bore (C 2) in a finger (Cl) of each further disk (C) is axially aligned, and that a longitudinal conductor (R) is inserted into each axially aligned row of bores (Bl, Cl). 4. Traveling wave tube according to claim 3, characterized in that the longitudinal conductors (R) sit with a tight fit in the bores (C 2) of the fingers (Cl) and that the bores (Bl) of the transverse plates (B) have a larger diameter than the bores (C 2) have the finger (Cl). 5. traveling wave tube according to claim 3 or 4, characterized in that the bores (C 2) the fingers (Cl) are arranged at their free end. 6. Traveling wave tube according to one of claims 1 to 5, characterized in that the longitudinal conductors (R) are rods. 7. Traveling wave tube according to one of claims 1 to 5, characterized in that the longitudinal conductors (R) are tubes. 8. Traveling wave tube according to one of claims 1 to 5, characterized in that the longitudinal conductors (R) consist of a plurality of individual conductors connected in parallel. 9. Traveling wave tube according to one of claims 1 to 5, characterized in that the longitudinal conductors (R) are made of sheet metal. 10. Traveling wave tube according to one of claims 1 to 5, characterized in that the longitudinal conductors (R) have a conductive deposit on a carrier made of non-conductive material. 1 sheet of drawings