SU748591A1 - Coaxial change-over switch - Google Patents

Description

one

This invention relates to ultra-high frequency radio technology.

A coaxial switch is known, comprising a housing, coaxial output axial lines, the inner conductors of which are provided with movable contacts, an input coaxial line with a fixed contact on the inner conductor, and a mechanism for moving Q of movable contacts.

However, in the well-known switch, the isolation between the switched channels is not large enough.

The purpose of the invention is to increase the g of the unbundling by the switched channels.

To do this, in a coaxial switch comprising a housing, output coaxial lines, the inner 20 conductors of which are provided with movable contacts, the input coaxial line with a fixed contact on the inner conductor and the moving mechanism of movable contacts / 25 in the housing are coaxially with each movable contact, a metal sleeve is installed groove, and each of the moving contacts is provided with a disc-shaped protrusion matching the AOR

, with the groove of the corresponding metal sleeve.

FIG. 1 shows the proposed coaxial switch, a longitudinal section; in fig. 2 shows a section A-A in FIG.

The coaxial switch comprises a housing 1, an input coaxial line 2 with an internal conductor 3 and two output coaxial lines 4 and 5 with internal conductors 6 and 7. The internal conductor 3 has a fixed contact 8 at the end, and the internal conductors 6 and 7 have movable contacts 9 and 10. On the housing 1, at the locations of the movable contacts 9 and 10, metal bushings 11 and 12 are installed with grooves 13 and 14 formed therein, while the movable contacts 9 and 10 are provided with disc-shaped projections 15, Te, mating with the grooves 13, 14, to image with them joints in the form of valves. The movement mechanism of the moving contacts (Fig. 2) consists of dielectric plates 17 and 18 fixed to the moving contacts and mounted on rods x 19, 20.

Springs 21, 22 are mounted between the dielectric plates. Rods 19 and 20 are connected by a ring 23 and mounted in sleeves 24-27. The return springs 28, 29 hold the movement mechanism with the movable contacts 9 -10 in the initial position. At the same time, the hinged contact 9 by means of the dielectric plate 17 mounted on it with the help of springs 21, 22 is pressed to the sleeve 11 and provides reliable shielding of the disconnected coaxial line 4. The moving contact 10 by the dielectric plate 18 is pressed to the fixed contact 8, the inner conductor b (fig.) of the input coaxial line 2 with the inner conductor 7 of the output coaxial line 5.

In the switching iipofiecce, the rods 19, 20, with the help of connecting rings 23, move in the direction of the output coaxial line 5, for example, by an electromagnet (not shown in the figures). At the same time moving

the contact 10 is moved to the sleeve 12 by means of a dielectric plate 18 fixed on it, and at the end of the movement it is pressed against it by springs 21,22, providing shielding of the coaxial line 5. The moving contact 8 moves the fixed contact 8 to the fixed contact 8 and is pressed to it, connecting the inner conductor 3 of the input coaxial line 2 with the inner

conductor 6 output coaxial line 4.

Thus, the presence of sleeves with grooves made in them and disk-shaped protrusions on the switch body are movable and connected to the grooves on the bushes and forming articulations with them in the form of a valve, which ensures reliable shielding of the disconnected channels and increases the output time of the channel. 30-40 dB compared with the known switch.

Claims (1)

1. USSR author's certificate If 552652, cl. H 01 R 1/12, 1976 (prototype). 28 .11 6 g