JPS60134604A - Antenna device - Google Patents

Abstract

PURPOSE:To direct easily the direction of a main beam in the direction of a geostationary satellite by providing a level and a magnet board or their combination and a direction adjusting section to the rear side of a reflecting mirror reflecting finally a radio wave irradiated from a primary radiator to attain ease of direction adjustment of the main beam and using a map in place of the scale of each indicating section. CONSTITUTION:The rear side of the reflecting mirror 2 is provided with the azimuth angle adjusting section 3, an elevating angle adjusting section 4, the level 8 and the magnet board 9, and the tilt angle and direction of the reflecting mirror 2 are adjusted by referencing the level 8 and the magnet board 9. As a device combining the level and the magnet board, the device with a structure in which the magnet board 9 is floated in a shell 14 in which liquid 13 is put, and a Japanese map 16 is drawn on the surface of the shell 14 so that the direction indicated by an indicating section 15 and the azimuth angle and elevating angle at each position on ground are made coincident, and the elevating angle and azimuth angle are matched easily with the direction of geostationary satellite by matching the direction indicated by the indicating section 15 to the desired position on the map.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention is used for microwave communication between a geostationary satellite and the ground, and includes an antenna section consisting of a -order radiator and a reflector system, and a radio wave radiated by the antenna section. This relates to improvement of an antenna device comprising a direction adjustment unit that adjusts the direction of the main beam of radio waves. must be oriented in the direction of the stationary hygiene. For example, the beam width of the main beam of an antenna with an aperture diameter of 1 m used in the 12 GH system is about 1 degree, and it is necessary to adjust the direction with an accuracy of about 0.2 degrees.

Also, the direction of a geostationary satellite as seen from the ground is determined by the position of the geostationary satellite and the latitude and longitude of the ground.

The above directions differ depending on each city on the ground.

For example, if a geostationary satellite is located on a geostationary orbit at 110 degrees east longitude, the azimuth and elevation angles will be the values shown in Table 1.

Table 1 [Prior Art] Conventionally, as shown in Fig. 1, such a parabolic antenna device consists of a primary radiator (1), 9 reflectors (2), an azimuth angle adjustment section (3), and an elevation angle adjustment section. (4), synchro transmitter (5a)t (5b) and angle display section (6)
), and the direction of the main beam of the antenna device was displayed on the angle display section (6) using the zinc chromatography detectors (5a) and (5b). The direction was then adjusted using this angle as a reference. Such an antenna device often has the problem of being expensive because it requires synchro transmitters (5a) (5b) and an angle display section (6). Furthermore, when such antenna devices are installed in different locations, 9 for example in Tokyo or Sapporo, the directions of the geostationary satellites are different, so there is a problem in that materials showing these directions are required.

In addition, as shown in Figure 82, in the case of an inexpensive antenna device that does not use a synchro transmitter or an angle display section, it is necessary to adjust the direction using a reception level monitor device (7) such as a receiver. If the beam width of the antenna device is slightly narrow, the range where the reception level is strong is narrow, making it difficult to adjust the direction.

(Summary of the invention) This invention aims to eliminate such drawbacks.

This improves the direction adjustment of the main beam of the antenna device by incorporating a spirit level to measure horizontality and a magnetic disk to measure azimuth, or a device that combines a level and a magnetic disk. This will be explained in detail.

[Embodiments of the invention]

FIG. 3 is a diagram showing the configuration of the antenna device according to the present invention, which includes a -order radiator (1), a reflector (2), and an azimuth adjustment section (3).
), elevation adjustment section (4), spirit level (8) and magnetic disk (9)
). An azimuth adjustment section (3), an elevation adjustment section (4), a spirit level (8), and a magnetic disc (9) are provided on the back side of the reflector (2).
) can be used to adjust the tilt angle and direction of the reflector (2).

In other words, by adjusting the direction of the radio waves that are reflected by the 2 reflecting mirrors (2) and directed toward the geostationary satellite, a level gauge (
8) As shown in Figure 4, the pipe length bent into an arc is reflected once! (2) Structures that move together (11
, 51), and the second bell f12 in the pipe 01 moves in accordance with the tilting of the counter bell (2). On the surface of the pipe member or the surrounding stand, there are scales and names of cities, nine prefectures, or similar place names written on them, and the direction of the elevation angle can be easily adjusted by aligning the bubble a to the position of the desired place name. can be done.

As shown in Fig. 5(a) and (b), the magnetic disk (9) is
A structure attached to a structure (llb) that moves only in the horizontal plane.

The indicator αl is configured to move in a direction opposite to the direction of the reflecting mirror (2). Indicator A On the stand around the seagull, a scale and a city name, prefecture name, or similar place name are written.By aligning the indicator 0!19 of the magnetic disc (9) to the position of the desired place name, Azimuth can be easily adjusted.

Furthermore, as a device combining a spirit level and a magnetic disk, there is a device having a structure in which a magnetic disk (9) is suspended in a shell I containing liquid a, as shown in FIG. The above magnetic disk (9)
can move freely within the shell α rod, and is attached to a structure (lla) that moves together with the 699 reflector (2) by using the indicator (L!9) of the magnetic disk (9). hand.

You can know the angle of elevation and azimuth. Therefore, if a map of Japan is drawn on the surface of the shell (14) so that the direction indicated by the indicator αω coincides with the azimuth and elevation angle at each position on the ground, then By aligning the indicated direction with the desired location on the map, the elevation angle and azimuth angle can be easily aligned with the direction of the geostationary satellite.

Although a case has been described here in which a spirit level, a magnetic disk, or a combination thereof is fixed to the antenna section, the same effect can be obtained even if the device is of a removable structure. Furthermore, although we have described a parabolic antenna device here, in the case of an antenna device consisting of multiple reflecting mirrors, a level A similar effect can be obtained by providing a device, a magnetic disk, or a combination thereof, and a direction adjustment section.

〔Effect of the invention〕

As explained above, if the antenna device according to the present invention is used, a level, a magnetic disc, or a device combining these and a direction adjustment unit are installed on the back side of the reflector that finally reflects the radio waves radiated from the -order radiator. This makes it easy to adjust the direction of the main beam, and the use of place names such as city or prefecture names or maps instead of the scale values on each indicator makes it easy to adjust the direction of the main beam. It is possible to direct the direction towards the geostationary satellite.

[Brief explanation of drawings]

FIG. 1 is a structural diagram of a conventional antenna device, FIG. 2 is a structural diagram of another conventional antenna device, FIG. 3 is a structural diagram of an antenna device according to the present invention, and FIGS. 4, 5, and 6 2A and 2B are partial structural diagrams of an antenna device according to the present invention, respectively. In the figure, (1) is a -order radiator, (2) is a reflector, (
3) is the azimuth adjustment section, (4) is the elevation adjustment section, (5) is the synchro transmitter, (6) is the angle display section, (7) is the reception level monitor device, (8) is the spirit level, ( 9) is a magnetic disk, (11 is a pipe, aυ is a structure, Q3 is a bubble, a is a liquid, α is a shell, a9 is an indicator, 0
e is a map. Identical or equivalent parts in Figure 1 are indicated with the same reference numerals. 6 figure 5

Claims (3)

[Claims] (1) It is used for microwave communication between geostationary satellites and the ground, and is composed of an antenna section consisting of a -order radiator and a reflector system, and the direction of the main beam of radio waves emitted when the antenna section is on the transmitting side. In the antenna device equipped with a direction adjustment unit, a level for measuring horizontality and a magnetic disc for measuring azimuth are installed on the back side of the reflector that finally reflects the radio waves emitted from the -order radiator. An antenna device characterized by nine things. (2) The antenna device according to claim (1), characterized in that it is constituted by a device that combines a spirit level and a magnetic disk. (3) Claim (1) characterized in that a city name, a prefecture name, a local base, or a place name similar to these is used instead of the value of a spirit level, a magnetic disk, or a scale of the device; or Antenna device described in paragraph (2)〇(4) In a shell with a map drawn on the surface, a spirit level and a magnetic disk are combined and nine devices are placed together with liquid so that they can move freely within the shell. 3. The antenna device according to claim 1 or 2, wherein the azimuth angle and elevation angle indicating section by the device is structured to indicate a part of the map.