DE1004251B - Microwave switch for ribbon cables - Google Patents

Description

GERMAN

According to the main patent application, a microwave switch for ribbon cables is protected is characterized in that the switch segment includes a portion of at least the first conductor and the second conductor (part) a very small fraction 5 of a quarter wavelength at a dielectric distance is supported by the first and a flat, flat surface of at least two to three times the width of the first conductor, neither conductor nor conductor parts of the switch segment, not even part-ro wise, cantilevered and both conductors or parts as thin strips, preferably in accordance with Art of the printed circuits are carried out and that the dielectric separating layer of the stripline arrangement has a recess in which the switch segment comprising a plate of dielectric material movable, at least in part, and / or the resistor or resistors let in in this way and led is (are) that the resistor (s) in the open switch position to the Lines) is (are) connected, while the conductor part of the first and / or second conductor when the Switch is in the course of the assigned line.

The invention now relates to an advantageous further development of such an arrangement. It consists in that the switch segment or the switch body in each coupling position optionally one in each row from more than two output ribbon lines to the same input conductor. In pursuit of the inventive concept if the switch body has only a single (coupling) ribbon line and is one of the Ends of the switchable connection parts of the line conductor of this ribbon line and / or of the input conductor widened in such a way that for each coupling position there is a coupling with the input conductor for the corresponding output conductor.

The invention is explained in more detail with reference to the drawing, which shows exemplary embodiments.

Fig. 1 is a plan view of a printed circuit type switch;

Figure 2 is a sectional view taken along line 2-2 of Figure 1;

3 shows a plan view of an exemplary embodiment according to the invention;

Fig. 4 is a sectional view taken along line 4-4 of Fig. 3, and

Figures 5, 6 and 7 are plan views of other embodiments of the present invention.

The printed circuit strip line of FIGS. 1 and 2 comprises a flat conductor , a strip conductor 2 and a layer 3 of dielectric material by which the conductors 1 and 2 are spaced parallel to each other. The microwave switch for ribbon cables

Addition to patent application I 7066 VIII a / 21 a ⁴

Applicant:

International Standard Electric
Corporation, New York, NY (V. St. A.)

Representative: Dipl.-Ing. H. Ciaessen, patent attorney,
Stuttgart-Zuffenhausen, Hellmuth-Hirth-Str. 42

Claimed priority:
V. St. v. America 8 February 1954

Herbert F. Engelmann, Mountain-Lakes, N.J. (V. St. Α.), Has been named as the inventor

Dielectric can consist of polyethylene, polystyrene, polytedra-fluoro-ethylene (known under the trade name Teflon), fiberglass or layers of fiberglass, polyethylene derivatives or other material of high dielectric quality. In certain cases, the dielectric can also consist of air. A circular opening 4 is provided in the waveguide for the switch body and interrupts the strip conductor 2. Several conductors 2 ″, 2 ^b , 2 ^C can be used as output conductors. In the region of their ends, these conductors run radially to the periphery in relation to the opening 4 Embodiment consists of a layer 5 of dielectric material, which corresponds to layer 3. It is covered on one side by a flat conductor 6 and on the other side is provided with one or more ribbon lines 7, 8, 9. The inner surface of the flat conductor 6 butts, preferably smoothly, with the inner surface of the conductor 1, although the conductor 6 is preferably thicker and forms a flange or flange-like and slightly upwardly bent fingers around a

609 839/295

to effect resilient pressure against the conductor 1. The band ladder, such. B. 7, are also preferred made thicker than said strip conductor 2, so that its inner surface is essentially smooth abuts the inner surface of the conductor 2. It is provided with extensions 11, which the ends the output conductor overlap. The connection formed by the overlap is with the help of the Finger 10 under spring tension, so that a good one

The size and shape becomes a suitable susceptance in line 2 to compensate for that of the enlarged At the end of 14, caused mismatch was achieved. In Fig. 5, the widened conductor part is on the input line provided as shown at 20. The line tapers towards the rear end a shoulder-shaped projection 21, which has the necessary susceptance for extensive compensation

a spring washer 18 is arranged, which the necessary pressing force for a good electrical contact caused between the conductor 13 and the output or input conductor.

The widening of the end 14 causes an impedance mismatch of the line, which should be compensated. This can be done with the help of an adjustment element z. B. in the form of a stump 19, which is guaranteed at a distance of a quarter wavelength from the contact. On the flat conductor 6, the end 14 is arranged on the input conductor 2. Arranged by a protruding part 12, which is more suitable as a manual use of a vertical projection 19 to operate the switch. By
Turning the knob 12 can adjust the angular position of the
Ribbon lines 7, 8 and 9 are changed so that the
Ladder 2 optionally with ladders 2 ", 2 ^b or 2 ^C ge 15
can be coupled. The strip conductor 7 is shaped in such a way that it provides a coupling between the conductors 2
and 2 ^{a can} form, while the strip conductor 8 is shaped so that the conductors 2 and 2 ^b or similar

With the help of the conductor 9, the conductors 2 and 2 ^C mit- 20 sation caused by the widened end 20 can be connected to one another. Since this represents electrical impedance mismatch or the occurring distortions of the transmitted waves for the line. The body 5 is ^b provided in this embodiment with a single strip conductor 22 of straight-25 änderter width which is so arranged that upon rotation of the body 5, the input line ^b with one or the other of the input lines 2 ', 2 ^b and 2 ^C is coupled.

According to FIG. 6, instead of the widened end of the gene conductor 13, the input conductor 2 is divided into three 14 to form an arcuate end piece 30 and is of a width made by the branches 23, 24 and 25, the diametrically total width of the output ribbon lines 2 ^b and 2 ^C opposite the output conductors 2 ^C , 2 ^a and 2 ^b plus the enclosed distance (run. Each of the branches 23, 24 and 25 is a measure along the arch of the body 5). Long by this quarter wavelength. The dielectric switching design eliminates the need to use two conductors 8 35 body 5 ° only with a single tape or and 9, since the widened end is provided with strip conductor 26, which is the same width as 14 for each position of the tape conductor 13 in coupling of the input or output conductor, so that one remains with the input conductor 2 when this from the optional coupling with one or the other one to the other output conductor of the conductor 2 ^a , branch of the input conductor 2 to the output conductor 2 °, 2 ^b , 2 ^{C is} switched. Another difference in 40 2 ^b and 2 ^C can be made.

With respect to the arrangement described above, according to the embodiment of FIG. 7,

the body 5 ^a vertically arranged pins 15 and 16, in order to reduce the impedance mismatch caused by the end widening of the conductor, preferably made of dielectric material, to a minimum, so that the switching body for switching over from, a division of the widening on the upper side of the Strip line are actuated 45 the conductors 27 and 28 have been made. The to-

Field is concentrated between the strip conductor and the adjacent surface of the flat conductor, there is largely no coupling between the three strip conductors 7, 8 and 9.

In the embodiment according to FIGS. 3 and 5, the dielectric body 5 carries a single strip conductor 13. The end of the strip-shaped or band-shaped part causing the coupling to the input conductor 2

can. The switch body 5 ^a can have a flat conductor 6 (Fig. 2). In a further development of the exemplary embodiment according to FIGS. 3 and 4, however, the opening i ″ does not extend through the flat conductor 1

Cooperating ends of these conductors are each widened in the same way, so that the transition is gradual, as can be seen from the parts 29 and 30. When coupling the conductors 27 and ^2a through the conductor

through, but only a little through the dielectric 50 28 exists between the connecting pieces 29 and 30 Irish layer 3. In this way, part of the direct adaptation remains, so that in the greatest possible way

no mismatch occurs. When the switch body 5 ^d rotates in the coupling position with the conductors 29 and 2 ⁶

dielectric layer 3, designated by 3 ^a , together
with the head 1 exist. The body 5 ^a could be made sufficiently heavy to make good contact between the strip conductor 55 adaptation due to the curved end of the 13 and the input or output conductor by its weight; Fittings on, but the sudden discontinuity according to the embodiment, however, become means
provided that the strip conductor 13 with security to
force such contact. This means exists
z. B. from a screw 17, which is through the flat 60
Head 1 protrudes into the body 5 " . The bolt of the
Screw 17 can consist of dielectric material or, if metal is used, with its
Ends are arranged at a distance from the conductor 13.

It has been determined through experimentation to include one out of 65 numbers of lines. In the same way existing conductive material, formed by the space between input and output can be interchanged see the conductors 1 and 2 led screw of great, in case the associated circuits require it, little influence is provided, provided they do not short-circuit. Finally, the overlapping connection between represents the conductors 1 and 2. Between the pieces with stops, locks or pawls the screw 17 and the flat conductor 1 is 70 to see an accurate alignment or a

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or 29 and 2 ^C , although there is still a slight jump in failure, it is greatly reduced, so that practically every mismatch that occurs is reduced to a minimum.

The switch bodies 5 ^b , 5 ^C and 5 ^ä of FIGS. 5, 6 and 7 can of course, if necessary, be designed in the same way as in the exemplary embodiments according to FIGS bigger

to achieve precise switching of the contact pieces. Such locking pieces are shown in the figures with 31 and designated.

Claims (11)

PATENT CLAIMS: 1. Microwave switch small dimensions for ribbon cables according to the main patent application I 7066 VIII a / 21 a ⁴ , characterized in that the switch segment or the switch body in each coupling position optionally one of a series of more than two output (ribbon) lines ( 2 ", 2 ^b , 2 ^C ) with the same input conductor (2, 27). 2. Switch according to claim 1, characterized in that the switch body has only a single (coupling) ribbon line (13, 22, 26, 28) and one of the ends of the switchable connection parts of the line conductor of this ribbon line (14 and 30) or of the input conductor (20) is widened so that for each coupling position for the corresponding output conductor (2 ", 2 ^b , 2 ^C ) there is a coupling to the input conductor (2, 27). 3. Schaller according to claim 2, characterized in that that the widened end of the connecting parts of the single conductor and / or input conductor is only widened laterally. 4. Switch according to one of claims 2 or 3, characterized in that the widening of the ends of the connecting parts (14, 20, 29) is approximately equal to the sum of the widths of the two outer output conductors (2 ^b , 2 ^C ) including the width in between . measured along the arc of the switch body (5 °, 5 ", 5 ^C , 5 < ^l ). 5. Switch according to claim 1, characterized in that the switchable connection part of the input conductor (2) is divided into a number of branches (23, 24, 25, Fig. 6) corresponding to ^{each of the output lines (2 °, 2 *, 2 e)} is. 6. Switch according to one of claims ^ to 4, characterized in that each of the widened connection parts (13, 20, 29, 30 ) tapers gradually to the width of the line conductor (2, 2 ", 2 ^b , 2 ^C). 7. Switch according to one of the preceding claims, characterized by switching elements for Compensation for the mismatch caused by the widening of the connecting parts. 8. Switch according to claim 6, characterized in that the taper in the rearward extension with the associated line forms a shoulder-shaped projection (21), which in such a way is dimensioned that the mismatching or distortion caused by the broadening of the Waves transmitted through the line are compensated. 9. Switch according to one of the preceding claims, characterized in that the coupling conductor of the switch body overlap the corresponding connection lines. 10. Switch according to claim 9, characterized in that the overlaps with resilient Fingers (11,32), notches, stops or locks are provided. 11. Switch according to one of the preceding claims, characterized in that the connecting lines (2 ^a , 2 ^b , 2 ^C or 23, 24, 25) open perpendicular to the periphery of the switch body (5 °, 5 *, 5 ^C ). 1 sheet of drawings © 609 839/295 3.57