JPH0440002A - Antenna equipment - Google Patents

Abstract

PURPOSE:To manufacture the antenna equipment at low cost by making a fixer such as a mast or the like common in the case of receiving signals from plural satellites respectively by antennas for reception by providing two antenna direction adjusters. CONSTITUTION:A first antenna adjuster 8 and an arm 9 are fitted to the top of a pillar 7. A first antenna 2 is fitted to one part of this arm 9, and a second antenna 3 is fitted through a second antenna direction adjuster 10 to the other part of the arm 9. In this case, it is also available to fit the arm 9 to the top of the pillar 7 by the first antenna direction adjuster 8 after fitting the first and second antennas 2 and 3 to the arm 9. Thus, the number of members is decreased and the cost is reduced. Further, the antenna equipment can be obtained with the plural kinds of directivity while making easy the construction of installing the device or the work of adjusting the directions of the antennas.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an antenna device used to receive satellite signals from a plurality of satellites in good condition.

(Prior art) An antenna device that receives signals from a satellite consists of a fixed fixture such as a mast that is vertically erected on the ground, a direction adjustment device attached to the fixture, and a reflector fixed to this direction adjustment device. It consists of a mirror and a primary radiator fixed at the focal point of the mirror by a support arm or the like. In order to constantly receive signals from a plurality of satellites, it is necessary to provide the above-mentioned antenna device for each satellite, since each satellite has a different stationary position.

(Problem to be solved by the invention) However, if one set of the above antenna device was provided for each satellite, not only would multiple fixing devices such as masts be required, increasing costs, but also the installation work and antenna There is a problem in that the direction adjustment work must be performed for each antenna device.

SUMMARY OF THE INVENTION An object of the present invention is to provide an excellent antenna device that is inexpensive due to the small number of members, and that is easy to install and adjust the direction of the antenna.

(Means for Solving the Problems) In order to achieve the above object, the present invention takes the measures as described in the claims above, and its effects are as follows.

(Function) The installation of the antenna device will be explained. First, fix a fixture such as a mast to the ground. Next, attach the support column and polar axis adjustment tool to the fixture. A first antenna direction adjuster and an arm are attached to the tip of the support column. A first antenna is attached to a part of the arm, and a second antenna is attached to the other part via a second antenna direction adjustment tool. Interval 1
Alternatively, the second antenna may be attached to the arm, and then the arm may be attached to the tip of the support column using the first antenna direction adjustment tool.

Next, we will explain how to adjust the antenna direction of the antenna device. First, adjust the polar axis direction adjustment tool and fix the support column so that it is aligned with the polar axis direction. Next, the azimuth and elevation angles are adjusted using the first antenna direction adjuster so that the first antenna faces the first satellite that is sending the satellite signal. Then, fix the first antenna direction adjuster in the optimal state. Next, move the second antenna direction adjuster so that the second antenna faces the second satellite, and fix this adjuster in the best position. Both the first satellite and the second satellite are in geostationary satellite orbits, and adjustment of the second antenna is simple because it is only necessary to adjust the orientation.

(Example) The drawings showing the embodiments of the present application will be described below.

In FIGS. 1 to 3 showing the antenna device, 1 is the antenna device, 2 is a first antenna, and 3 is a second antenna. Reference numeral 4 designates a mast as an example of a fixture, and a base 5 below the mast is fixed to the ground with well-known anchor bolts or the like. Reference numeral 6 denotes a polar axis direction adjustment tool, which is used to adjust the support column 7 so that it faces in the polar axis direction. Reference numeral 8 indicates a first antenna direction adjustment tool, 9 an arm, and 10 a second antenna direction adjustment tool. 11 is a geostationary satellite orbit, and a first satellite 12 and a second satellite 13 are arranged in this geostationary satellite orbit 11.

Next, each member constituting the antenna device 1 will be explained in detail. The first antenna 2 is a converter that includes a parabolic reflector 20 made of pressed metal plate or FRP in which a reflective member such as a metal net is embedded, and a primary radiator directed toward the reflector 20. 21, and a support fitting 22 for fixing the converter 21 to the reflecting mirror 20.

A coaxial cable 23 is connected to the converter 21 for transmitting a first intermediate frequency satellite signal to a subsequent stage.

The second antenna 3 is configured similarly to the first antenna 2. That is, the reflector 30, the converter 31, the support fitting 3
It consists of 2. A coaxial cable 33 is connected to the converter 31.
is connected.

Next, the polar axis direction adjustment tool 6 is configured to adjust the center axis of the support column 7 in the polar axis direction using the main body 60 and the holding arm 66. The main body 60 is made by joining a base portion 61 formed of a metal tube and a support portion 62 formed by pressing a metal plate into a U-shape by means of welding or the like.

The support part 62 is provided with a pair of through holes 63 through which a pole (63a) serving as a pivot is passed. ○The base part 61 is provided with a pair of through holes 63 that are provided in parallel with the direction in which the holes 63 are seen through each other.
4, and a screw hole 65 provided penetrating from the outer surface to the inner surface of the base 61. On the other hand, the take-out arm 66 has a round hole 67 at one end and a long hole 68 at the other end.

Next, the support column 7 is made of a metal cylinder or round bar by processing 1-, and has a through hole 70 approximately in the center and a through hole 71 at the opposite end of the top 72.

Next, the first antenna direction adjustment tool 8 will be explained.

Reference numeral 80 denotes a mounting body formed by pressing a metal plate such as an iron plate. An upper projecting piece 82 and two side projecting pieces 83 are formed upright from the base surface 81 . The base surface 81 has a U
A through hole 84 is bored through which a letter-shaped port 84a is inserted.

85 and 86 indicate screw holes. Reference numeral 87 denotes a rocking body, which is formed by pressing a metal plate such as an iron plate into a U-shape. The rocking body is provided with round holes, long holes 89, and a plurality of through holes 90.

Next, the arm 9 is formed by processing a square piece of metal.

Approximately at the center of the arm 9 is a contact portion for abutting the swinging body 87 of the first antenna direction adjustment tool 8, and a screw hole 91a is provided. The arm 9 has a first antenna mounting part 92 at one end, and a second antenna mounting part 92 at the other end.
Antenna mounting portions 93 are provided, each having a screw hole 92a.
, 93a are perforations.

Next, reference numeral 24 denotes a first antenna fixture made of a pair of metal plates formed by press working, and is fixed to the reflecting mirror 20 using bolts 25. This antenna fixture U has a through hole 26 corresponding to the position of the screw hole 92a of the arm 9 described above.
is the provision. 26a indicates a bolt.

The second antenna direction adjustment tool 10 mainly includes a pair of rotating bodies 34 made by pressing a metal plate or the like.

Each rotating body 34 is fixed to the reflecting mirror 30 of the second antenna 3 by inserting a bolt 35 into a through hole provided therein. Each of the rotating bodies 34 is provided with a shaft hole 36 through which the rotation shaft is inserted, and an arc-shaped elongated hole 37 centered on the shaft hole 36 . Reference numeral 36a indicates a bolt as a rotating shaft, and reference numeral 37a indicates a positioning bolt.

Next, assembly of the antenna device will be explained.

(1) Select a convenient place for installing the antenna and free from obstacles, and fix the base 5 to the ground to make the mast 4 independent.

(2) Adjuster main body 6 with support column 7 with top 72 facing upward
Place it on the support part 62 of 0. The through hole 70 of the support column 7 is connected to the main body 6.
0, and penetrate the holes 63a. A nut 63b is screwed onto the tip of the bolt 63a. As a result, the support column 7 comes to rotate about the pole 63a.

(3) Pass the bolt 71a through the through hole 71 of the support column 7, and pass the round hole 67 of the lifting arm 66 through the tip of the bolt. Further, a nut 71b is screwed onto the tip of the pole 71a, and the support column 7 and the lifting arm 66 are connected. Next, the elongated hole 68 of the take-out arm 66
64a over the screw hole 64,
4. Also, a bolt 6 is inserted into the screw hole 65 of the base 61.
5a. In steps (2) and (3) above, the polar axis direction adjuster 6 is assembled and the support column 7 is assembled thereto.

(4) The first antenna 2 is completed by assembling the support fitting 22 and the converter 21 to the reflecting mirror 20, and the second antenna 3 is completed by assembling the supporting fitting 32 and the converter 31 to the reflecting mirror 30.

(5) Antenna mount 24 is fixed to the back surface of reflector 20 of first antenna 2 using bolts 25.

The first antenna 2 is attached to the arm 9 by aligning the through hole 26 of the antenna fixture 24 with the screw hole 92a of the arm 9, and screwing the bolt 26a into the screw hole 92a.

(6) The rotating body 34 of the second antenna direction adjuster 10 is fixed to the back surface of the reflector 30 of the second antenna 3 using bolts 35. The shaft hole 36 of this rotating body 34. Long hole 37
are superimposed on the screw holes 93a of the arm 9, and the bolts 36a and 37a are screwed into one screw hole 93a and the other screw hole 93a, respectively, and the second antenna 3 is attached to the arm 9.
Attach to. Attachment of the first antenna 2 and the second antenna 3 to the arm 9 is completed in steps (4) to (6) above.

(7) Attach the completed body from (3) above to the tip of the mast 4. In this case, the base 61 is completely placed over the mast 4.

(8) Attach the mounting body 80 of the first antenna direction adjustment tool 8 to the top portion 72 of the support column 7. Support column 7 is a U-shaped pole)
84a and the base 81, and tighten it with the nuts 84b to temporarily secure it.

(9) The through hole 90 of the swinging body 87 of the first antenna direction adjustment tool 8 is overlapped with the screw hole 91a of the arm 9.

Then, the rocking body 87 is attached to the arm 9 by screwing the pin 90a into the screw hole 91a.

(10) Hold the arm 9 and stack the swinging body 87 on the mounting body 80 so that the round hole 88 and the long hole 89 of the swinging body 87 overlap the screw holes 85 and 86 of the mounting body 80, respectively.

Then, the holes 85a and 86a are screwed into the screw holes 85 and 86, respectively.

The antenna device is completed by the above steps.

In addition, in the above steps (4) to (6), the first
The work of attaching the antenna 2 and the second antenna 3 may be performed after the work in steps (7) to (10). In addition, in the above procedure, the mounting body 80 is attached to the support column 7, the rocking body 87 is attached to the arm 9, and then the mounting body
0 and the oscillating body 87 to form the first antenna direction adjustment tool 8.
However, it is also possible to assemble the first antenna direction adjuster 8 in advance and attach it to the support column 7 or attach the arm 9 to it.

It goes without saying that the antenna device 1 assembled as described above has the advantage of requiring only a small space for installation.

Next, the antenna direction adjustment work of the antenna device 1 will be explained with reference to FIG. 2.

(a) By rotating the polar axis direction adjustment tool 6 in the direction of arrow A or swinging in the direction of arrow B, the center axis of the support column 7 is aligned with the polar axis direction (direction toward the North Star). First, tighten the bolt 65a at a position that matches the polar axis direction, and fix it so that it does not rotate in the direction of the arrow. Then Oak) 63b and Pol)
By tightening 64a, it is fixed so that it does not swing in the direction of arrow B.

(b) Adjust the first antenna 2 so that it faces the first satellite 12 by swinging the first antenna direction adjustment tool 8 in the direction of arrow C or rotating it in the direction of the arrow. At this time, while measuring the output of the converter 21 with a well-known satellite signal level measuring device, the output level is adjusted in a direction that maximizes the output level. Once the first antenna 2 is oriented in the best direction, tighten the plurality of nuts & 4b to secure the mounting body 80 to the support column 7, and then
a and 868 are tightened to secure the rocking body 87 to the mounting body 80.

As a result, the first antenna direction adjustment tool 8 neither swings in the direction of arrow C nor rotates in the direction of arrow C.

(c) Adjust the direction of the second antenna 3 so that it faces the second satellite 13 by operating the second antenna direction adjustment tool 10.

In this case, since the arm 9 is fixed so as not to swing in the direction of the arrow C, the second antenna 3 only needs to be adjusted in the direction of the arrow E using the direction adjuster 10. This is the first satellite 12
This is because both the second satellite 13 and the second satellite 13 are on the geostationary satellite orbit 11. The direction adjustment of the second antenna 3 is also performed by measuring the output of the converter 31 with a satellite signal level measuring device. When the second antenna 3 is oriented in the best direction, the rotating body 34 is fixed to the arm 9 by tightening the poles 36a and 37a.

Support metal fittings 22 for the first antenna 2 and second antenna 3
Since the antennas 2 and 32 are extended laterally of the reflecting mirror, each of the antennas 2 and 3 has good cross-polarization characteristics.

Next, FIG. 4 shows an antenna device with a different configuration. Components having the same or equivalent functions as those in the previous example are indicated by the same reference numerals with an alpha bent e added thereto, and redundant explanations will be omitted. In this example, the third satellite is located on the geostationary satellite orbit 11e.
There is a satellite 100, and a satellite signal from this satellite 100 can also be received by the third antenna 101. The third antenna 101 is connected to the arm 9e via a third antenna direction adjuster 102. The third antenna direction adjustment tool 102 can be a device that is upside down from the antenna direction adjustment tool 10 of the previous example. Third antenna 10
The first direction adjustment may be performed after the direction adjustment of the first antenna 2e, or the direction adjustment may be performed last.

The polar axis direction adjusters 6 and 6e and the first antenna direction adjusters 8 and 8e are not limited to the above-mentioned configurations, but may be of any known configuration as long as they are spatially adjustable. Further, the second antenna direction adjustment tools 10 and 10e and the third antenna direction adjustment tool 102 are not limited to the above configurations, but may be of any known configuration as long as they can be adjusted in a plane.

Also, the first antenna 2. The antennas such as the second antenna 3 do not need to be reflector antennas, and plane antennas can also be used.

(Effects of the Invention) As described above, in the present application, even if signals from multiple satellites are received by respective receiving antennas, the fixing devices such as the mast can be used in common, so manufacturing can be done at low cost. There is an effect that can be done.

Furthermore, once the direction of the first antenna is adjusted, the other antennas can be adjusted by simply shifting the directions by a small angle in the plane, so that the antenna direction adjustment work is extremely efficient.

[Brief explanation of the drawing]

The drawings relate to embodiments of the present invention, and FIG. 1 is a perspective view of the antenna device seen from the front side, FIG. 2 is a perspective view seen from the back side, FIG. 3 is an exploded perspective view of the antenna device, and FIG. 4 is a perspective view of the antenna device. is a perspective view of a different antenna device seen from the back side. 1@・Φ antenna device, 2... first antenna, 3.
...Second antenna, 4...Fixing tool, 6...Polar axis direction adjustment tool, 7...Support column, 8...First antenna direction adjustment tool, 9...Arm, 10 ...Second antenna direction adjustment tool, 11...Geostationary satellite orbit, 12...First
Satellite 13...Second satellite. Patent applicant Maspro Electric Works Co., Ltd. Representative Takashi Hatayama Figure 1

Claims (1)

[Claims] a fixture; a polar axis direction adjustment fixture fixed to the fixture for adjusting the support column in the polar axis direction; a first antenna direction adjustment fixture fixed to the support pole for adjusting the direction of the arm;
a first antenna fixed to the arm; a second antenna for receiving a satellite signal different from the first antenna; and a second antenna fixed to the arm for adjusting the direction of the second antenna. An antenna device comprising: an antenna direction adjustment tool;