JPH0831735B2 - Portable antenna device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable antenna device for use in a mobile earth station in a satellite communication system for adjusting the elevation angle and azimuth and for disassembling and assembling and carrying.

[0002]

2. Description of the Related Art Conventionally, a portable antenna such as a parabola type or a plane array type used for a mobile earth station of this type is required to be portable and easy to install at a moving point. That is, it is easy to move, and the initial setting work to match the beam directions (radiation patterns) of elevation angle and azimuth angle (horizontal direction) to the geostationary satellite station that transfers radio waves from the ground station by the transponder is easy. Is required. As a suitable proposal for such a portable antenna, a "portable antenna" disclosed in Japanese Utility Model Laid-Open No. 62-203506 and a casing structure for a portable satellite communication antenna disclosed in Japanese Utility Model Laid-Open No. 2-147913. Can be mentioned.

FIG. 3 (a) is a side view showing the configuration of Japanese Utility Model Laid-Open No. 62-203506, and FIG. 3 (b) is a rear view. In FIGS. 3A and 3B, the radiation feeding section (electromagnetic horn) 1 is supported by a support section 5 fixed to a box body 2. The box body 2 is provided with a reflecting mirror 4, and the box body 2 is supported by the adjusting mechanism 6. Further, the lower portion of the box body 2 is fixed to the box body 3 by the metal fitting 9, and the upper end of the adjusting mechanism 6 is joined by the metal fitting 7. Further, the lower end of the metal fitting 7 is fixed by the metal fitting 8. Further, the radiation feeder 1 and a transmitter (not shown) are connected by a flexible coaxial cable or a waveguide. With this configuration, the elevation beam can be easily adjusted by rotating the outer screw of the adjusting mechanism 6. In addition, the azimuth is adjusted by moving the entire device in the left-right direction.

Further, FIG. 4 (a) shows an actual flat plate 2-1479.
13 is a side view showing the configuration of Japanese Patent Publication No.
(B) is a rear view. In FIGS. 4A and 4B, a cover 18 having a slide rail 16 is fixed to the box body 11 of the reflecting mirror 12. The stand 17 moves on the slide rail 16 using the fixed knob 15 as a contact, and
Is supporting 1. The radiation feeder 14 is connected to the transmitter / receiver 13 arranged on the back side of the reflecting mirror 12 in the box 11. In this configuration, the angle of the stand 17 is changed to adjust the elevation angle. Further, since the transmitting / receiving unit 13 is arranged in the box body 11, portability is improved, and it is easy to move and initialize the moving place.

[0005]

However, in the above-mentioned conventional portable antenna device, the above-mentioned conventional open antenna device 62-2 is used.
In JP 03506, it is difficult to adjust the azimuth beam. That is, it is necessary to manually lift the box body 2 together with the transmitter connected by the coaxial cable or the waveguide to move it in the left and right directions to set the beam direction, and then lower the device to the ground or the bed of the automobile. Become. Therefore, when the initial setting is troublesome and the coaxial cable and the waveguide are long, the transmission loss is large because the microwave band is used in particular.

In the example of Japanese Utility Model Laid-Open No. 2-147913, the same work is required, and it is difficult to adjust the azimuth angle when the weight of the built-in transmitting / receiving section is large. In particular, SNG: Satellite News G, which reports from the field via satellite lines.
In the case of the athering (satellite news gathering) system, since it uses a small parabolic antenna, it transmits at relatively high power. Therefore, the size of the transmitter is increased, and it is limited to move the transmitter alone when adjusting the azimuth. For this reason, one person cannot move to adjust the azimuth angle of other parabola antennas at the same time, and there is a disadvantage that initial setting takes time.

The present invention has been made in consideration of the above-mentioned circumstances, and the elevation angle and azimuth can be easily and quickly adjusted, and the disassembly and assembly can be performed, the transportation thereof can be facilitated, and the transmission can be performed. It is an object of the present invention to provide a portable antenna device in which the transmission path length between the machine and the power feeding unit is short and the transmission loss is reduced.

[0008]

In order to achieve the above object, the portable antenna device of the present invention is attached to at least a power feeding portion, a directional antenna, and a position avoiding the radiation surface of the directional antenna. a transmitter, an adjustment unit is in the separation and assembly enabled portable antenna apparatus, the adjustment
Equipped with an upper board that can be freely rotated or stopped on the lower board
Have azimuthal rotation stop was example, wear and azimuth adjustment mechanism for aligning the directivity of the variable to the communication station in azimuth the directional antenna and the transmitter, the transmitter to the upper plate
The hinge part for detachable placement, the transmitter and the
The directional antenna is detachably arranged between the upper panels, and the screw member expands and contracts by the rotation of the outer member screwed with the screw member to change the elevation angle of the directional antenna together with the transmitter. And an elevation angle adjusting mechanism for matching the directivity with the communication station by changing the antenna and the transmitter in the elevation direction.

In this structure, the directional antenna is a parabolic antenna provided with a radiation feeder and a reflecting mirror,
The communication station is configured as a geostationary satellite station. Further, the directional antenna and the transmitter are connected by a detachable waveguide or coaxial cable. In addition to these configurations, it is configured to include a tripod that is fixed to the lower panel of the azimuth angle adjusting mechanism and that is folded into at least two.
Further, an electric rotating mechanism for changing the azimuth angle is provided in place of the upper and lower boards of the azimuth adjusting mechanism, and an electric expanding / contracting unit for changing the elevation angle is provided in place of the expanding / contracting unit.

[0010]

In the portable antenna device of the present invention having the above-mentioned structure, at least the feeding part, the directional antenna, the transmitter, and the adjusting part can be separated and assembled. Then, the directional antenna and the transmitter are changed in the elevation direction to adjust the directivity with the communication station, and the azimuth is used to change the azimuth angle to adjust the directivity with the communication station. An angle adjustment mechanism is provided. Therefore, the elevation angle and azimuth can be adjusted easily and quickly. Further, disassembly and assembly are possible, and the transportation is easy. Further, the transmission path length between the transmitter and the power feeding unit is short, and the transmission loss is reduced.

[0011]

Embodiments of the portable antenna device of the present invention will be described below with reference to the drawings. FIG. 1A is a front view showing the configuration of an embodiment of a portable antenna device of the present invention, and FIG. 1B is a side view. 2 (a) is shown in FIG.
It is a perspective view which shows the structure of the electric power feeding part unit which decomposed | disassembled the structure of FIG. 2 for transportation, and FIG.2 (b) is a side view which shows the structure of the similarly disassembled reflecting mirror unit. FIG. 2C is a perspective view showing an external configuration of a transmitter in which the configuration of FIG. 1 is disassembled for transportation, and FIG. 2D is a side view showing a configuration of an adjusting unit similarly disassembled.

1 and 2, this apparatus is disassembled into a power feeding unit 20, a reflecting mirror unit 30, a transmitter 40, and an adjusting unit 50, and they are housed and carried in cases (not shown). In the power feeding unit 20, the radiation power feeding unit (electromagnetic horn) 21 is supported by the power feeding unit supporting unit 29. Further, a waveguide (or a coaxial cable) 28 is inserted and connected to the radiation power feeding unit 21 with a coaxial structure. Or they are connected by a coaxial connector. Further, in the reflecting mirror unit 30, the reflecting mirror 32 is supported and fixed to the reflecting mirror supporting portion 33. On the lower surface of the reflecting mirror support portion 33, a connection fitting 54 for manually attaching and detaching the transmitter 40 is provided by using, for example, a thumbscrew.

The adjusting unit 50 is provided with a tripod base 58 which can be folded in two in consideration of the size during transportation. The tripod 58 is screwed through each of the three ends of the tripod 58, and the thread-shaped height adjusting bolts 53a, 53b, 53c are provided with disks at both ends thereof.
Is provided. In addition, the adjustment unit 50 includes
An azimuth angle adjusting unit 56 that adjusts the azimuth angle is provided.
This azimuth adjusting unit 56 is a fixed T-shaped lower board 56.
a and an upper board 56b which is rotatably or stopably provided on the lower board 56a and rotates when adjusting the azimuth angle. The lower member 52a of the hinge 52 is fixed to the upper board 56b, and the upper member 52b rotatably screwed is provided on the lower member 52a. A connection fitting 54 is fixed to the upper surface of the upper member 52b.

Further, the adjusting unit 50 is provided with an elevation angle adjusting section 55. The elevation angle adjusting unit 55 sets the elevation angle of the reflector unit 30 in the direction of the geostationary satellite station, together with the transmitter 40 and the power feeding unit 20, and a screw member is screwed into the outer member, so that the screw member The upper end is fixed to the connection fitting 54. Further, the lower end is fixed to the lower board 56a of the azimuth angle adjusting unit 56, and by manually rotating the outer member, the screw member expands and contracts to change the angle of the connection fitting 54.

Next, the operation and function of the configuration of this embodiment will be described. The electrical operation is similar to that of a conventional portable antenna device. The transmission power from the transmitter 40 is the waveguide (or coaxial cable) of the power feeding unit 20.
Power is supplied to the radiation power supply unit 21 through 28. The radiated radio wave from the radiating power supply unit 21 is reflected by the reflecting mirror 32 and transmitted to the geostationary satellite station.

In this case, it is necessary to make an initial setting to match the elevation angle and the azimuth angle with respect to the geostationary satellite station from that point at the moved location. The fed power supply unit 20, the reflecting mirror unit 30, the transmitter 40, and the adjusting unit 50 are assembled at the installation site. In this case, the waveguide (or coaxial cable)
28 is connected to the radiation feeder 21. The transmitter 40 is fixed to the connection fitting 54. Further, the lower member 52a of the hinge 52
And the upper member 52b is rotatably screwed. When disassembling, this assembly may be performed in reverse. Further, the height adjusting bolts 53a to 53c provided on the tripod base 58 are rotated to cope with the unevenness of the installation place, and the stable installation is achieved.

After this, the elevation angle and azimuth angle are adjusted to the geostationary satellite station. The azimuth is adjusted by manually pressing the transmitter 40 or the end of the reflecting mirror 32 and rotating it in the left-right direction. The elevation angle is determined by the hinge 52 at the transmitter 40 and the power feeding unit 2
0, the screw member expands and contracts by manually rotating the outer member of the elevation angle adjusting unit 55 in a state where the angle of the reflecting mirror unit 30 is supported so that it can be freely changed.
The angle of 4 changes. That is, the elevation angle of the reflecting mirror 32 can be set in the direction of the geostationary satellite station.

In this way, the elevation angle adjusting section 55 and the azimuth angle adjusting section 56 can adjust the elevation angle and the azimuth angle, respectively. In this case, the adjustment of the azimuth may be performed only by manually holding the end portion of the transmitter 40 or the reflecting mirror 32 and rotating it in the left-right direction.
It is possible to eliminate the labor-intensive work of manually lifting and moving the entire device as in the conventional portable antenna device. In this configuration, the transmitter 40 and the radiation power feeding unit 21 are connected by the waveguide (or coaxial cable) 28. That is, in this device, the power feeding unit 20 to the adjusting unit 50 are integrally configured,
The distance between the transmitter 40 and the radiation feeding unit 21 can be shortened as compared with the case where the transmitter and the portable antenna are separated as in the conventional example. Therefore, it is possible to reduce the transmission loss particularly when the microwave band is used. In addition, the azimuth adjusting unit 5
The elevation angle adjusting unit 55 may be configured by a so-called electric type in which an electric motor, a gear, a screw, and the like are combined.

[0019]

As described above, in the portable antenna device of the present invention, at least the feeding portion, the directional antenna, the transmitter arranged at a position avoiding the radiation surface of the directional antenna, and the adjusting portion. Is configured to be separable and assembleable, and further, the directional antenna and the transmitter can be changed in the elevation angle direction to match the directivity with the communication station, and the elevation angle adjustment mechanism can be changed in the azimuth angle to change the communication station. An azimuth angle adjustment mechanism is provided to match the directivity with. As a result, the elevation angle and azimuth can be adjusted easily and quickly, disassembly and assembly are possible, and their transportation is easy. Moreover, the transmission path length between the transmitter and the power feeding section is short, and transmission loss can be reduced. Have an effect.

[Brief description of drawings]

FIG. 1A is a front view showing the configuration of an embodiment of a portable antenna device of the present invention. (B) is a side view.

FIG. 2A is a side view showing a configuration of a power supply unit unit disassembled for transportation. (B) is a side view showing the configuration of the reflecting mirror unit disassembled for transportation. (C) is a perspective view showing an external configuration of a transmitter disassembled for transportation. (D)
[Fig. 3] is a side view showing a configuration of an adjusting unit disassembled for transportation.

FIG. 3A is a side view showing a configuration of a conventional portable antenna device. (B) is a rear view.

FIG. 4A is a side view showing a configuration of a portable antenna device in another conventional example. (B) is a rear view.

[Explanation of symbols]

 20 Power Supply Unit 21 Radiation Power Supply 28 Waveguide 29 Power Supply Support 30 Reflector Unit 32 Reflector 40 Transmitter 50 Adjustment Unit 52 Hinge 52a Lower Member 52b Upper Member 53a-53c Height Adjustment Bolt 55 Elevation Adjuster 56 Position adjustment part 58 Tripod stand

Claims (5)

[Claims] 1. A portable antenna device in which at least a power feeding section, a directional antenna, a transmitter attached at a position avoiding a radiation surface of the directional antenna, and an adjusting section can be separated and assembled, On the lower panel of the adjusting unit, which is rotatably or rotatably provided
Has an azimuth rotation stopping section having a part board, and the azimuth angle adjustment mechanism for aligning the directivity of the variable to the communication station in azimuth the directional antenna and the transmitter, the upper and the transmitter It is necessary to attach it to the board detachably.
Detachable between the transmitter and the transmitter and the upper panel.
And the rotation of the outer member that the screw member is screwed into
The same member expands and contracts and the directional antenna
A portable antenna device comprising: a telescopic unit for varying an elevation angle; and an elevation angle adjusting mechanism for varying the directional antenna and the transmitter in the elevation angle direction to match the directivity with a communication station. 2. The portable antenna device according to claim 1, wherein the directional antenna is a parabolic antenna provided with a radiation feeder and a reflecting mirror, and the communication station is a geostationary satellite station. 3. The portable antenna device according to claim 1, wherein the directional antenna and the transmitter are connected by a detachable waveguide or coaxial cable. 4. The portable antenna device according to claim 1, further comprising a tripod base that is fixed to a lower panel of the azimuth angle adjusting mechanism and folds into at least two. 5. The structure according to claim 3, wherein instead of the upper and lower panels of the azimuth angle adjusting mechanism, an electric rotating mechanism for changing the azimuth angle is provided, and the elevation angle is changed in place of the expanding / contracting portion. A portable antenna device, comprising: