JPH04123611U - planar antenna - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] To provide a small planar antenna whose azimuth direction can be set with high precision. [Structure] A rotating shaft 9 is provided with one end fixed on the antenna chassis 5. This rotating shaft 9 is attached to one end of the antenna main body 8 so that the antenna main body 8 can rotate around this rotating shaft 9. As a result, the end of the antenna body 8 on the side facing the rotating shaft 9 is rotated on the antenna chassis 5.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a planar antenna device with direction adjustment.

0002

[Conventional technology]

Communication satellites are currently being launched and operating one after another, but they are physically located at the same location. Since it is not possible to do so, they are currently being placed over the equator in 4 degree increments.

0003 Therefore, the different broadcasting channels of the satellite are always adjusted accordingly in order to receive optimal reception. Therefore, it has become necessary to change the azimuth angle of the receiving antenna.

0004 There are two types of antennas that receive this satellite broadcasting: a flat antenna and a parapolar antenna. There is. In the case of a parapolar antenna, a rotation fulcrum is provided at the center of the antenna. The azimuthal direction is changed by rotating around a point.

[0005]

[Problem that the idea aims to solve]

On the other hand, in the case of a flat antenna, as shown in Figure 6, there is a rotating Some antennas have a fulcrum, but in antennas with this structure, the rotation of the end of the antenna body is Since the stroke was small, there was a problem in that it was difficult to adjust the stroke.

[0006] In addition, if you try to improve the antenna gain while making the entire antenna smaller, It is most ideal to attach the converter to the back of the central part of the antenna body. , as mentioned above, is a planar antenna with a structure in which the rotational fulcrum is located in the center of the antenna body. In this case, this rotational fulcrum becomes an obstacle and the down converter is forced to the back of the central part of the antenna body. There was also the problem that it could not be installed on a surface.

[0007] Therefore, the purpose of this invention is to make it compact and to set the azimuth direction accurately. The objective is to provide a planar antenna that can be used.

[0008]

[Means to solve the problem]

To achieve the above object, the present invention includes a planar antenna main body and a planar antenna. A rotary shaft rotatably provided at one end of the main body, and an arm to which one end of the rotary shaft is fixed. an antenna chassis, wherein the planar antenna body is mounted on the antenna chassis. This is a flat antenna characterized by being able to rotate around a rotation axis.

[0009]

[Effect]

One end is fixed on the antenna chassis and a rotation axis is provided. This rotation axis is the antenna Attach the antenna body to one end of the body so that it can rotate around this rotation axis. Let's go. With this configuration, the end of the antenna body facing the rotation axis can be attached to the antenna shaft. Rotate it on the board.

0010 As shown in Figure 5, the rotation axis (rotation fulcrum) is located at the end of the antenna body, so The stroke of the other end rotating on the antenna chassis for the angle rotation Can be made larger.

[0011]

【Example】

Embodiments of the present invention will be described below with reference to the drawings.

0012 FIG. 1 is a plan view showing the structure of the antenna, FIG. 2 is a sectional view showing the AA cross section of FIG. 1, FIG. 3 is a sectional view showing the BB section of FIG. In the figure, numeral 5 is the antenna shaft. It is An antenna rotation shaft 9 is fixed to the end of the antenna chassis 5. There is. An antenna main body 8 is provided on the antenna rotation axis 9 so as to be rotatable about this axis. It is being Note that the reference numeral 1 in the figure is the end of the antenna rotation fulcrum. of the antenna body The holder 6 has a push knob on the side opposite to the side where the rotation axis 9 is provided (movable end 2). Two are provided with 3 in between. A shaft 14 is attached to this holder 6. A push knob 3 is provided so as to be able to rotate up and down around this shaft 14. Ru. A clutch portion 10 is configured at one end of the push knob 3, and the antenna so as to mesh with the quick stop insertion groove 11 provided on the chassis 5. It has become. Further, the push knob 3 is connected to the clutch part 10 by a spring 7. A force is applied in the direction of engagement with the stopper insertion groove 11.

[0013] On the other hand, on both sides of the above-mentioned quick stop insertion groove 11, A band-shaped portion 15 is formed on which the lower end portion 4 of the holder 6 slides. Also , a protrusion 13 is provided to restrict the movable range of the antenna body.

[0014] The antenna body 8 can be connected to the push knob 3 by pushing down the push knob 3. The engagement state between the clutch portion 10 and the quick stop insertion groove 11 is released, The two holders 6, push knob 3, shaft 14 and spring 7 are integrated into an antenna chassis. With the belt-shaped portion 15 on the holder 6 in contact with the lower end 4 of the holder 6, Rotating motion.

[0015] The range of rotational movement of the antenna body 8 is restricted by the protrusion 13; By adjusting the position of the protrusion 13, the fixed position of the antenna body 8 is determined. You can determine the direction by

[0016] In addition, if the groove spacing of the quick stop insertion groove 11 is made finer, the antenna body It is possible to finely adjust the rotation angle of the The degree of adjustment range can be widened, so you can use the quick stop insert as needed. The width of the groove 11 may be changed. Also, if necessary, push knob 3 clutch The width of the groove in the portion 10 may be changed.

[0017] Furthermore, in FIG. 1, the quick stop insertion groove 11 is continuously provided. The fixing position of the antenna body 8 can be set to any desired position. The quick stop insertion groove 11 is inserted intermittently in multiple locations (11a, 11b, 11c etc.) so that it can be fixed at multiple predetermined positions. It can also be configured as

[0018] Note that reference numeral 12 in FIG. 1 or 4 is a down converter installation space. As is clear from the figure, it is installed in an ideal location on the back surface of the central part of the antenna body 8. be able to.

[0019]

[Effect of the idea]

As explained above, according to the present invention, one end of the planar antenna is the rotational fulcrum end, and the other end is the rotational fulcrum end. The end is a movable end that can slide freely in the azimuth direction around the rotational fulcrum end. Therefore, one flat antenna can be used for communication satellites, which are currently installed in the sky above the equator. It becomes possible to receive radio waves from other countries. Also, place the rotation fulcrum at the center of the antenna body. Since the stroke for the same rotation angle can be made larger than when it is installed, The accuracy of setting the azimuth direction can be improved. In addition, the downconverter is Since it can be installed in the center of the antenna body, a small and highly sensitive planar antenna can be installed. can be provided.

[Brief explanation of drawings]

FIG. 1 is a structural diagram of an embodiment of the present invention.

FIG. 2 is a sectional view of an embodiment of the present invention.

FIG. 3 is a sectional view of an embodiment of the present invention.

FIG. 4 is a structural diagram of another embodiment of the present invention.

FIG. 5 is a diagram illustrating the operation of the present invention.

FIG. 6 is a diagram illustrating the operation of a conventional planar antenna.

[Explanation of symbols]

3 Push knob 5 Antenna chassis 6 Holder 7 Spring 8 Antenna body 9 Rotation axis 10 Clutch section 11 Insertion groove for quick stop 13 Protrusion 14 axes 15 Band-shaped part

Claims (1)

[Scope of utility model registration request] 1. A planar antenna body, a rotary shaft rotatably provided at one end of the flat antenna body, and an antenna chassis to which one end of the rotary shaft is fixed; A planar antenna, wherein the planar antenna main body is rotatable about the rotation axis.