RU209147U1 - POSITION OF TERMINAL PLATES OF COAXIAL MICROWAVE SWITCH - Google Patents

Abstract

The utility model relates to microwave technology, in particular, to auxiliary devices for switching and interruption, and is intended for closing, interrupting or changing the signal path in coaxial paths.

The technical result of the utility model is the creation of a design of components and a control mechanism of a coaxial microwave switch, which has high reliability, low failure rate and low weight and size characteristics.

The technical result is achieved by the fact that the coaxial microwave switch contains a microwave part (case, base, four rectangular conductors (bars), input and output lines, with central internal conductors) and a control device. The rectangular conductor (bar) has the shape of a rectangular parallelepiped, and the contact part is made in the form of a protrusion, similar in shape to the "step", the height and depth of which corresponds to the optimal matching of the wave resistance at the border of the rectangular conductor (bar) and the central inner conductor. The contact surface of the central inner conductor of the strap has the shape of a "cap". Two rectangular conductors (bars) provide pressure from above to the protrusions of the contact surfaces of the central inner conductors. The other two rectangular conductors (bars) provide pressure from below to the protrusions of the contact surfaces of the central inner conductors. A rectangular conductor (bar) pressed against the central inner conductors (collets) serves as a transmission line, and a rectangular conductor (bar) pressed against the wide wall of the base serves as an additional matching element. The movement of rectangular conductors (bars) is controlled by pushers together with springs; cylindrical pins are used as guides for rectangular conductors (bars). The movement of rectangular conductors (bars) is carried out by means of the mechanical action of the control device, which consists of an external connector, two control coils, which are mounted on the base of the control device with an already installed armature with a plate. The control device is installed on the microwave part in such a way that the armature with the plate in a fixed position presses on one pusher with a rectangular conductor (bar), which provides pressure from above to the protrusions of the contact surfaces of the central inner conductors, and on the second pusher, which provides pressure from below to protrusions of the contact surfaces of the central inner conductors. Through an external connector, control voltage pulses are supplied to one of the coils through a telemetry board, which registers the position of the control device. Through the armature plate, the force is transmitted from the control device to the contact system of the switch. When a control voltage is applied to the coil, the open contacts of the switches are closed and the closed contacts of the switches are opened, thereby ensuring the switching of signals.

Description

The utility model relates to microwave technology, in particular, to auxiliary devices for switching and interruption, and is intended for closing, interrupting or changing the signal path in coaxial paths.

Known switch design [Patent US No. 6856212], which describes the different design features of the contact elements. One of the variants of the contact plates has a curved cylindrical contact area.

Curved cylindrical contact surfaces and flat contact areas of the inner center conductors provide partial mechanical contact.

This paper also describes contact surfaces having a dome-shaped surface of the inner central conductors and each of the contact plates is a concave arcuate contact area, determined by removing part of the tips of each tongue.

The disadvantage of this form of contact surfaces is the low accuracy of the location of the movable contact plates inside the radio frequency channels of the switch, which leads to a deterioration in the matching of the switch.

Another form of contact surfaces is a flat surface, and brush tongues having a plurality of finger-like conductors, each of which provides a contact area. Curving the fingertips back is preferred to prevent scratches on the surface of the inner center conductor.

The main disadvantage of this design is the low reliability due to the complexity of the design.

The closest analogue is the design of a relay switching device for switching high-frequency signals, consisting of a housing and a base, where there are strips for closing contacts with control rods. Channel switching occurs with the help of a permanent magnet installed in the control rod and in the electromagnet. The permanent magnet in the control rod will repel the magnet in the electromagnet when it is energized [US Patent No. 6650210].

The disadvantage of this design is the increase in weight and size characteristics due to the presence of four electromagnetic coils for each element of the control rod, which closes the contacts of the switching device.

The technical result of the utility model is the creation of a design of components and a control mechanism of a coaxial microwave switch, which has high reliability, low failure rate and low weight and size characteristics.

The technical result is achieved by the fact that the coaxial microwave switch contains a microwave part (case, four rectangular conductors, input and output lines, with central internal conductors) and a control part (an armature with a plate, a base, two coils, a telemetry board and an external connector) . A rectangular conductor has the shape of a rectangular parallelepiped, and the contact part, which is in contact with the contact surface of the central inner conductor, is made in the form of a protrusion similar in shape to a “step”, the height and depth of which corresponds to the optimal matching of the wave resistance at the border of the rectangular conductor and the central inner conductor. conductor. The contact surface of the central inner conductor has the shape of a "cap". Two rectangular conductors provide pressure from above to the protrusions of the contact surfaces of the central inner conductors. The other two rectangular conductors provide pressing from below to the protrusions of the contact surfaces of the central inner conductors. A rectangular conductor pressed against the central inner conductors serves as a transmission line, and a rectangular conductor pressed against the wide wall of the housing serves as an additional matching element. The movement of rectangular conductors is controlled by pushers together with springs; cylindrical pins are used as guides for rectangular conductors. Rectangular conductors are made with the ability to move under mechanical action of the armature with a plate mounted on the base, and the armature with the plate in a fixed position presses on one pusher with a rectangular conductor, which provides pressure from above to the protrusions of the contact surfaces of the central inner conductors, and on the second pusher, which provides a clamp from below a rectangular conductor to the protrusions of the contact surfaces of the central inner conductors. Through an external connector, control voltage pulses are supplied to one of the coils through a telemetry board, which registers the positions of the armature with the plate. When a control voltage is applied to the coil, the open contacts of the switches are closed and the closed contacts of the switches are opened, thereby ensuring the switching of signals.

The utility model is illustrated with the help of drawings: Fig. 1 shows a front-top view of the microwave part; in fig. 2 - longitudinal section of the control part; in fig. 3 - the location of the contact plates with a fixed position of the armature with the plate.

The proposed method is that the coaxial microwave switch contains a microwave part (case (1), four rectangular conductors (2), (3), (4), (5), input and output lines (6), with central conductors (7), (8), (9), (10)) and the control part (armature with plate (17), base (16), two coils (15), telemetry board (18) and external connector (14 )). The rectangular conductor has the shape of a rectangular parallelepiped. The contact surface of the central inner conductor has the shape of a "cap". Rectangular conductors (2) and (5) (Fig. 1) provide pressure from above to the protrusions of the contact surfaces of the central inner conductors (7), (9), (10). Rectangular conductors (3) and (4) (Fig. 1) provide pressure from below to the protrusions of the contact surfaces of the central inner conductors (7), (8), (9). A rectangular conductor pressed against the central inner conductors serves as a transmission line, and a rectangular conductor pressed against the wide wall of the base serves as an additional matching element. The movement of rectangular conductors is controlled by pushers (11) (Fig. 1), together with springs (12), cylindrical pins (13) are used as guides for rectangular conductors. Rectangular conductors are made with the ability to move under mechanical action of the armature with the plate (17) (Fig. 2) mounted on the base (16), and the armature with the plate in a fixed position presses on one pusher (11) (Fig. 3) with a rectangular conductor (5), which provides pressure from above to the protrusions of the contact surfaces of the central inner conductors (9), (10), and to the second pusher with a rectangular conductor (4), which provides pressure from below to the protrusions of the contact surfaces of the central inner conductors. Through the external connector (14) (Fig. 2), control voltage pulses are applied to one of the coils (15) through the telemetry board (18), which registers the positions of the armature with the plate. Based on the foregoing, it can be argued that this utility model provides high reliability, low failure rate and low weight and size characteristics.

Positions in the drawings are indicated:

1 - body;

2, 3, 4, 5 - rectangular conductors;

6 - input and output lines;

7, 8, 9, 10 - central inner conductors;

11 - pushers;

12 - springs;

13 - pins;

14 - external connector;

15 - two coils;

16 - base;

17 - anchor with a plate;

18 - telemetry board.

Sources of information

1. Patent US 6650210, IPC: H01P 51/30, published 11/18/2003

2. Patent US 6856212, IPC: H01P 1/10, published on February 15, 2005.

Claims (1)

A coaxial microwave switch containing a housing, input and output lines, characterized in that the rectangular conductors have the shape of a rectangular parallelepiped, and the contact part that comes into contact with the contact surface of the central inner conductor is made in the form of a protrusion similar in shape to a "step"; the contact surface of the central inner conductor has the shape of a "hat"; two rectangular conductors provide pressure from above to the protrusions of the contact surfaces of the central inner conductors; the other two rectangular conductors provide pressing from below to the protrusions of the contact surfaces of the central inner conductors; the movement of rectangular conductors is controlled by pushers together with springs; cylindrical pins are used as guides for rectangular conductors; rectangular conductors are made with the possibility of movement under mechanical action of the armature with a plate mounted on the base, and the armature with the plate in a fixed position presses on one pusher with a rectangular conductor, which provides pressure from above to the protrusions of the contact surfaces of the central inner conductors, and on the second pusher, which provides a clamp from below a rectangular conductor to the protrusions of the contact surfaces of the central inner conductors; through an external connector, control voltage pulses are supplied to one of the coils through a telemetry board, which registers the positions of the armature with the plate.

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