JPS6188601A - Waveguide switch - Google Patents

Abstract

PURPOSE:To use just a single type of waveguide switch to a changeover switch needed for using and spare circuits, etc. by using a cylindrical stator having plural waveguide ports and a rotor to form the waveguide switch. CONSTITUTION:Five waveguide ports 10-1-10-5 are provided to a cylindrical stator 3 with each 45 deg. interval, and a rotor 4 is set slidably inside the stator 3. The rotor 4 also contains six input ports 11-1-11-6 with each 45 deg. interval. both ports 11-5 and 11-6 which are separate by 90 deg. from each other are con nected to each other via the 1st connection/transmission circuit 12. The rest two pairs of input ports separate by 45 deg. from each other are connected with each other via the 2nd and 3rd transmission circuits 13 and 14. In such a consti tution, the waveguide ports and input ports can be switched among three connec tion modes by rotating the rotor 4 every 45 deg.. Thus the using and spare switch circuits can be formed with switches of a small number of types.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a waveguide switch used for switching from a working device to a standby device in a microwave device having a redundant system.

(Prior Art) Waveguide switches are characterized by lower loss than other types of microwave switches, such as PIN diode switches and ferrite switches, and are capable of switching high power. Used in the system to switch between active and standby devices. A conventional switch of this type is shown in FIG. 1 is the input terminal, 2 is the output terminal,
3 is a stator, and 4 is a rotor. As shown in FIG. 5, the conventional switch only has the function of connecting one input terminal to either of two output terminals by rotating a 40 rotor. FIG. 6 shows a redundant configuration in which one standby device is commonly used for two active devices. 5-1, 5-2 are signal input terminals, 6-1.6
-2 is a signal output terminal, 7 is a waveguide switch shown in FIG. 5, 8-1, 8-2 is a current device, and 9 is a backup device.

(Problems to be Solved by the Invention) As shown in Figure 6, in the case of using conventional switches, six waveguide switches are required, which increases the size and weight of the entire device. It had the disadvantage of being large. This poses a major problem for satellite-borne equipment.

In order to solve these drawbacks, the present invention is designed so that the functions of the three switches on the input side or the output side shown in FIG. 6 can be realized with one switch.

(Means for Solving the Problems) The present invention is characterized by a cylindrical stator having eight waveguide ports spaced apart at an interval of 45° on the circumference; It has input ports at 6 points out of 8 points every 45 degrees so as to be in communication with the ports, and includes a rotor that slides on the inner periphery of the stator, and the rotor Among the input ports, a first connection transmission circuit connects two input ports spaced apart by 9flll"tf, a second connection transmission circuit connects two input ports spaced apart by 45 degrees, and a second connection transmission circuit connects two input ports spaced apart by 45 degrees. a third connection transmission circuit for connecting another two input ports; the second and third It is located in the waveguide switch ≠, which is configured by arranging one input port of the connection transmission circuit.

(Function) With the switch having the above configuration, inputs and outputs of all devices can be switched with a single switch, and the above purpose is achieved.

(Embodiment) In the redundant configuration shown in FIG. 16, it is sufficient that the switch has three connection states as shown in FIG. In FIG. 7, s-1, 5-12 are signal input terminals, 6-3.
6-4. ．． 6-5 is a signal output terminal.

An embodiment of the invention having the connection function of FIG. 7 is shown in FIG. 10-1 to 1O-5 are waveguide ports, 11-1 to 1
1-6 is an input port, 12 is a first connection transmission circuit connecting 11-5 and 11-6 (two input ports spaced apart by 90 degrees), and 13 is two input ports spaced apart by 45 degrees. )11-1
and 11-2, 14 is a second connection transmission circuit that connects J
Similar to 3, two input capos separated by 45 degrees) 11-3
] 1-4, 3 is a stator, and 4 is a rotor. In rotor No. 4, the distance between input ports 11-6 and 11-1 is 45°, and input port 1
The angle between 1-4 and 11-5 is also 45°.

With such a structure, by rotating the rotor 4 by 45 degrees, the waveguide port and the input port can be connected to three states as shown in FIG. 2. In Figure 7 and Figure 2, 5-1 is 10-1.5-2 is 10-5.
．． 6-3 to 10-2.6-4 to 10-3.6-5 to 1O
-4, the three connection states (al, (b), and (c) in Fig. 7 and Fig. 2 can be completely matched.) In the embodiment shown in Fig. 1, the connection transmission The circuit is a rectangular waveguide,
By making the E plane (the short side surface of the waveguide) perpendicular to the rotation axis of the waveguide switch, it can be constructed to be small and lightweight. In terms of manufacturing technology, it is no more difficult than conventional waveguide switches.

FIG. 3 shows another embodiment of the present invention, in which waveguide ports 10-6 to 1.0-8 are added to the embodiment of FIG. 1. By using the waveguide switch of this embodiment, a redundant configuration as shown in FIG. 1 becomes possible. 8
-1 to 8-4 are active devices, 9-1 to 9-2 are backup devices,
] 5 is the waveguide switch shown in FIG. In Figure 4, devices 8-1, 91, 8-2 and 8-3.9-2.8-
By making the fourth devices have different characteristics (for example, output power, etc.), it is possible to compactly configure a two-system system with redundancy.

In the above embodiment, the connection transmission circuits 12 to 4 are E front curve, I-I curve, E plane corner, and T
-One side corner is possible. For eight-plane and two-plane bends, the average length of the bend is set to nλ/2 (n is an arbitrary integer, and λ is the internal wavelength of the curved waveguide section), and the impedance discontinuities at the entrance and exit of the bend are mutually It is better to cancel it.

Regarding the corners, it is preferable to connect two identical corner curves in series at a certain interval so that their reflections cancel each other out at the center frequency.

Furthermore, in the present invention, by using two waveguide switches shown in FIG. 1 or 3 connected to a common drive shaft, the waveguide switches on the input side and output side of the device can be integrated into one drive circuit. Since the device can be driven by the following steps, it is possible to further reduce the size, weight, and reliability.

(Effects of the Invention) As explained above, by using the waveguide switch according to the present invention, multiple waveguide switches that were conventionally required can be realized with one waveguide switch, so redundant equipment can be reduced. It can be configured to be small, lightweight, and highly reliable.

[Brief explanation of the drawing]

FIG. 1 shows the first embodiment of the invention, FIG. 2 shows the connection state of the waveguide switch of the invention, FIG. 3 shows the second embodiment of the invention, and FIG. 4 shows the second embodiment. Example of application to redundant configuration, Part 5
The figure shows a conventional waveguide switch, Figure 6 shows an example of redundant configuration, and Figure 7 shows a conventional waveguide switch.
The figure is a diagram showing the connection state required in the configuration of FIG. 6. ■...Input terminal, 2...Output terminal, 3...
Stator, 4... Rotor, 5-1 to 5-2... Signal input terminal, 6-1 to 6-5... Signal output terminal, 7... Conventional waveguide switch, 8 -1 to 8-4... Current equipment, 9-1 to 9-2...
・Spare equipment, 10-1 to 10-8... waveguide port,
11-1 to 11-6...input port, ]2...first
J3...Second connection transmission circuit, 14...Third connection transmission circuit, J5...Second embodiment of the present invention.

Claims (3)

[Claims] (1) A cylindrical stator having 8 waveguide ports spaced apart at 45° intervals on the circumference, and It has input ports at 6 points out of 8 points, and includes a rotor that slides on the inner periphery of the stator, and the rotor is configured to include input ports among the input ports.
A first connecting transmission circuit connecting two input ports separated by 90 degrees, a second connecting transmission circuit connecting two input ports separated by 45 degrees, and another two input ports separated by 45 degrees. a third connection transmission circuit for connecting the ports, one of the second and third connection transmission circuits being located outside the two input ports of the first connection transmission circuit at positions spaced apart from each other by 45°; A waveguide switch characterized in that it is configured by arranging input ports. (2) The waveguide according to claim 1, wherein waveguide ports are provided only at five positions adjacent to each other among the eight waveguide port mounting positions of the stator. tube switch. (3) It has a plurality of rotary waveguide switches and a common rotation axis that connects the rotors of each switch to each other, and each of the switches has eight waveguide ports spaced apart at an interval of 45°. A cylindrical stator having on the circumference, and input ports at six points out of eight points every 45 degrees so as to be in communication with the eight waveguide ports, A rotor that slides on the inner periphery of the stator is provided, and the rotor connects a first connection transmission circuit that connects two of the input ports that are spaced apart by 90 degrees, and a first connection transmission circuit that connects two of the input ports that are spaced apart from each other by 45 degrees. a second connection transmission circuit that connects two input ports, and a third connection transmission circuit that connects two other input ports spaced apart by 45 degrees; A waveguide switch characterized in that one input port of the second and third connection transmission circuits is arranged at positions 45° apart from each other on the outside of the ports.