JPS622802Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a waveguide rotation device used as a part of a microwave transmission circuit.

First, a conventional device of this type will be explained with reference to FIGS. 1, 2, and 3. Figures 1 and 2 are diagrams showing the application of the conventional waveguide rotation device.
FIG. 1 shows a state in which the antenna is unfolded and used, and FIG. 2 shows a state in which the microwave transmission circuit is folded using a waveguide rotating device to store the antenna. In the figure, 1 is a horn-shaped antenna,
2 is a first rotating waveguide, 3 is a second rotating waveguide,
4 is a fixed waveguide, 5 is a first waveguide rotation device,
6 is a rotation axis of the first waveguide rotation device 5, 7 is a second waveguide rotation device, and 8 is a rotation axis of the second waveguide rotation device 7, which is orthogonal to the rotation axis 6. are doing. Now, using the first waveguide rotating device 5, rotate the antenna 1 by 90 degrees in the direction of the arrow 9 so that the antenna 1 is directed upward. Next, by rotating the antenna 1 by 90 degrees in the direction of the arrow 10 using the second waveguide rotation device 6, the antenna 1 can be folded as shown in FIG.

FIG. 3 is a cross-sectional view of the waveguide rotation device 5 taken along the rotation axis 6 as a representative example. In the figure, 2 is a first rotating waveguide, 3 is a second rotating waveguide,
11 is the center conductor of the coaxial tube attached to the first rotating waveguide 2, 12 is the outer conductor of the coaxial tube, and the first rotating waveguide 2, the center conductor 11, and the outer conductor 12 are integrated. It is becoming more and more popular. 13 is the center conductor of the coaxial tube attached to the second rotating waveguide 3, 14 is the outer conductor of the coaxial tube, and the second rotating waveguide 3, the center conductor 13, and the outer conductor 14 are integrated. 2, 11, and 12 are combined by a bearing 15 so that they rotate relative to each other. 1
Reference numerals 6a and 16b are mode converting portions, 17a is a connecting portion between the center conductors 11 and 13, and 17b is a connecting portion between the outer conductors 12 and 14. For example, the radio waves transmitted in the direction of the arrow 18 are
From the rotating waveguide 2, the mode is converted by the mode conversion section 16a, and the signal is transmitted to the coaxial tubes 11 and 12. Further, the signal is transmitted to the coaxial tubes 13 and 14 on the other side at the chain yoke coupling sections 17a and 17b, converted to the original mode by the mode conversion section 16b, and transmitted to the second rotating waveguide 3. The opposite direction can also be transmitted in the same way, and radio waves can be transmitted under the same conditions at any angle in the rotation direction of 9.

Since conventional waveguide rotation devices have such a structure, two waveguide rotation devices are required to obtain two-axis rotation directions, and even if one waveguide rotation device is used, the waveguide rotation The tube axes needed to be separated by a distance of 19 mm. In addition, the coaxial tube is the H-plane (wide side) of the waveguide.
It must be installed on the device, which increases the size of the entire device.
There were times when the structure was subject to upward constraints.

This idea eliminates these drawbacks, has a two-axis rotation mechanism in one waveguide rotation device, and combines waveguides on the same tube axis to reduce the size of the device. It provides equipment.

An embodiment of this invention shown in FIGS. 4, 5, and 6 will be described below. FIG. 4 shows a cross-sectional view of the waveguide rotation device according to this invention, and the fifth
The figure is a perspective view of its fixed part, and FIG. 6 is a perspective view of its rotating part. In FIGS. 4, 5, and 6, 2 is a waveguide on the rotating side, 4 is a waveguide on the fixed side, and 6 and 8 are the rotation axes of the waveguide 2 on the rotating side, which are mutually orthogonal. , 6 is the rotation axis Z-Z' in the direction of the arrow 9, and 8 is the rotation axis X-X' in the direction of the arrow 10, which coincide with the tube axis of the waveguide 2 on the rotation side. 2
0 is a flange attached to the waveguide 2 on the rotation side, and the flange surface forms a convex spherical surface 22 centered at the intersection 0 of the two rotation axes 6 and 8.
Reference numeral 21 denotes a flange attached to the waveguide 3 on the fixed side, and the flange surface forms a concave spherical surface 22 centered on the intersection 0. 23 is a chain yoke joint provided on the rotation side flange 20;
24 is a ring that connects the rotating side flange 20 and the end plate 2.
6 and rotates the rotation side flange 20. 27a and 27b are axes concentric with the rotating shaft 6, and 28
a and 28b are brackets fixed to the fixed side flange 21; 29a and 29b are bearing holes drilled in the brackets 28a and 28b;
7 are engaged. Although not shown in the figure, this waveguide rotation device also includes the waveguide 2 on the rotation side.
The waveguide 4 has a device for fixing the waveguide 4 at a position where the tube axis 8 of the fixed waveguide 4 and the tube axis 30 of the fixed waveguide 4 are in a straight line.

As described above, the waveguide rotation device according to this invention can replace the two conventional waveguide rotation devices 5 and 7 shown in FIGS. 1 and 2, and the waveguide 2 on the rotation side tube axis 8 and the waveguide 4 on the fixed side
When the tube axes 30 of the apparatus are in a straight line, the radio waves can be transmitted through the chain yoke coupling part 20. Therefore, the entire apparatus can be made very compact and lightweight, which is very effective for transportation.

[Brief explanation of the drawing]

1 and 2 are diagrams showing an example of the application of a conventional waveguide rotation device, FIG. 3 is a sectional view of a conventional waveguide rotation device, and FIG. 4 is a waveguide rotation device of this invention. 5 is a perspective view of the fixed part of the waveguide rotation device of this invention, and FIG. 6 is a perspective view of the rotation part of the waveguide rotation device of this invention. In the figure, 1 is an antenna, 2 is a waveguide on the first rotation side, 3 is a waveguide on the second rotation side, 4 is a waveguide on the fixed side, 5 and 7 are waveguide rotation devices, 6 and 8 are rotating shafts, 20 is a rotating side flange with a convex spherical surface,
21 is a fixed side flange having a concave spherical surface. Note that the same or corresponding parts in the figures are indicated by the same reference numerals.

Claims (1)

[Scope of utility model registration request] a rotating flange having a convex spherical surface attached to the rotating waveguide; and a concave flange attached to the stationary waveguide connected to the waveguide and engaging the convex spherical surface. a fixing flange having a spherical surface, and the waveguide on the rotation side is configured to rotate with two axes that are orthogonal to each other at a position where the centers of the spherical surfaces of the two flanges are concentric and are orthogonal to each other on the center of the spherical surface. Further, a waveguide rotation device configured to transmit radio waves at a position where the tube axes of the two waveguides are in a straight line.