JPH0531841B2 - - Google Patents

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 have the characteristics of lower loss than other types of microwave switches, such as PIN diode switches and ferrite switches, and can switch 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 an input terminal, 2 is an output terminal, 3 is a stator, and 4 is a rotor. As shown in Figure 5,
The conventional switch only has the function of connecting one input terminal to either of two output terminals by rotating four rotors. Figure 6 shows
This is a redundant configuration in which one standby device is commonly used for two active devices. 5-1, 5-
2 is a signal input terminal, 6-1 and 6-2 are signal output terminals, 7 is a waveguide switch shown in FIG. 5, and 8-
1 and 8-2 are active devices, and 9 is a backup device.

(Problems to be Solved by the Invention) As shown in Fig. 6, when configured using conventional switches, six waveguide switches are required, making the entire device larger and heavier. It had the disadvantage of being large. This is a major problem for sanitary onboard 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, in which all eight points or five adjacent points spaced apart at 45 degrees on the circumference of the stator. A cylindrical stator having waveguide ports at each of the stator, input ports at six points corresponding to eight points every 45 degrees on the stator, and an inner periphery of the stator. a first connection transmission circuit that connects two of the input ports spaced apart by 90°, and a rotor that slides between the two input ports spaced apart from each other by 45°; a second connection transmission circuit for connecting and a third connection transmission circuit for connecting two other input ports spaced apart by 45°;
A waveguide switch configured by arranging one input port of the second and third connection transmission circuits at positions 45° apart from each other on the outside of the two input ports of the first connection transmission circuit. be.

Another feature of the present invention is that the switch is composed of a plurality of rotary waveguide switches and a common rotation shaft that connects the rotors of each switch, and each of the switches is a cylindrical stator, a cylindrical stator having waveguide ports at all or five adjacent points of eight points spaced at 45° intervals on the circumference of the stator; 6 of the points corresponding to
a rotor sliding on the inner periphery of the stator, the rotor having a first input port connecting two input ports spaced apart by 90° from among the input ports; a connecting transmission circuit; a second connecting transmission circuit connecting two input ports spaced apart by 45 degrees;
a third connection transmission circuit for connecting two other input ports separated by 45 degrees; The waveguide switch is characterized in that it is configured by arranging one input port of the second and third connection transmission circuits.

(Function) With the switch configured as described above, inputs and outputs of all devices can be switched by a single switch, and the above object is achieved.

(Embodiment) In the redundant configuration shown in FIG. 6, it is sufficient that the switch has three connection states as shown in FIG. 7. In FIG. 7, 5-1 and 5-2 are signal input terminals, and 6-3, 6-4 and 6-5 are signal output terminals. An embodiment of the invention having the connection function of FIG. 7 is shown in FIG. 10-1 to 10-5 are waveguide ports, 11-1 to 11-6 are input ports, 1
2 is a first connection transmission circuit that connects two input ports 11-5 and 11-6 separated by 90 degrees;
Two input ports 11-1 and 11- separated by 45°
A second connection transmission circuit, 14, connects 2 to 13.
Similarly, two input ports 11− separated by 45°
a third connection transmission circuit connecting 3 and 11-4;
is a stator, and 4 is a rotor. In rotor 4, the angle between input ports 11-6 and 11-1 is 45°, and the angle between input ports 11-4 and 11-5 is also 45°.
It is.

Because of this structure, the rotor 4
By rotating the waveguide port by 45 degrees, the input port can be connected to three states as shown in FIG. In Figure 7 and Figure 2, 5-1 is 1
0-1, 5-2 to 10-5, 6-3 to 10-2,
By making 6-4 correspond to 10-3 and 6-5 to 10-4, the three connection states a, d, and c in FIG. 7 and FIG. 2 can be completely matched.

In the embodiment shown in FIG. 1, the connection transmission circuit is a rectangular waveguide, and its E plane (the short side of the waveguide) is made perpendicular to the rotation axis of the waveguide switch.
It can be configured 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 the waveguide ports 10-6 to 10 in the embodiment of FIG.
-8 was added. By using the waveguide switch of this embodiment, a redundant configuration as shown in FIG. 4 is possible. 8-1 to 8-4 are active devices, 9-1 to 9-2 are backup devices, and 15 is a waveguide switch shown in FIG. In Figure 4, 8-
Devices 1, 9-1, 8-2 and 8-3, 9-2, 8
-4 different characteristics of the device (e.g. output power, etc.)
By using a device with this, a two-system system with redundancy can be constructed compactly.

In the above embodiment, the connection transmission circuits 12 to 14 can be E-plane curved, H-plane curved, E-plane corner, and H-plane corner. E side and H
For surface bending, the average length of the bend is nλ _g 〓/2 (n is an arbitrary integer, λ _g 〓 is the tube wavelength of the curved waveguide section),
It is preferable to mutually cancel the impedance discontinuities at the entrance and exit of the bend. 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, two
By using the waveguide switches shown in Figure 1 or Figure 3, the waveguide switches on the input and output sides of the device can be driven by one drive circuit, making it even smaller, lighter, and more reliable. It can be measured.

(Effects of the Invention) As explained above, by using the waveguide switch according to the present invention, the plurality of waveguide switches that were conventionally required can be realized with one waveguide switch. 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. 5 shows a conventional waveguide switch, FIG. 6 shows an example of a redundant structure, and FIG. 7 shows a necessary connection state in the structure of FIG. 6. 1...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 switches, 8-1 to 8-4... Current equipment, 9-1 to 9-2... Backup equipment, 10-1 to
10-8...Waveguide port, 11-1 to 11-6
...Input port, 12...First connection transmission circuit,
13...Second connection transmission circuit, 14...Third connection transmission circuit, 15...Second embodiment of the present invention.

Claims (1)

[Scope of Claims] 1. A cylindrical stator, in which on the circumference of the stator
a cylindrical stator having waveguide ports at all or five adjacent points of eight points spaced apart at 45 degrees;
The stator has input ports at 6 points corresponding to 8 points every 45°, and includes a rotor that slides on the inner circumference of the stator, and the rotor Among the input ports, a first connection transmission circuit connects two input ports separated by 90 degrees, a second connection transmission circuit connects two input ports separated by 45 degrees, and another connection transmission circuit separated by 45 degrees. a third connection transmission circuit that connects two input ports of the first connection transmission circuit, each 45° outside the two input ports of the first connection transmission circuit;
A waveguide switch characterized in that one input port of the second and third connection transmission circuits is arranged at a spaced apart position. 2 Consisting of a plurality of rotary waveguide switches and a common rotating shaft that connects the rotors of each switch to each other, each of the switches is a cylindrical stator, 8 spaced at 45° intervals
A cylindrical stator having waveguide ports at all or five adjacent points, and input ports at six of the points corresponding to eight points every 45° on the stator. and a rotor that slides on the inner periphery of the stator, and the rotor is connected to the input port at 90°.
A first connection transmission circuit connects two input ports spaced apart, a second connection transmission circuit connects two input ports spaced 45° apart, and another two input ports spaced 45° apart. a third connection transmission circuit to be connected, and one input of the second and third connection transmission circuits is 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 by being configured by arranging ports.