JPH05267927A - Parabolic antenna system - Google Patents

Abstract

PURPOSE:To prevent a waveguide from being damaged and also, to execute a polarized wave conversion in a state for which a primary radiator is stabilized. CONSTITUTION:A fitting plate 5 is connected to the position of a focus of a reflecting mirror and a primary radiator 4 is attached to the fitting plate 5 so as to be turnable. To the flange part 4A of the primary radiator 4, one end edge part of a waveguide 9 is subjected to flange coupling and to the other end edge part of the waveguide 9, an electronic equipment casing 10 is subjected to flange coupling. On the side wall of the electronic equipment casing 10, a supporting body 13 is fixed and a first tongue-like piece 14 formed by extending from a first supporting part 13A of the supporting body 13 is fixed to the flange part 4A. A second tongue-like piece 15 formed by extending from the second supporting part 13B of the supporting part 13 is fixed to the supporting plate 5. Accordingly, the load of the electronic equipment casing 10 applied to the waveguide 9 is relaxed. By moving a second tongue-like piece 15, the primary radiator 4 is interlocked and turned. By fixing a second tongue- like piece 15 in a prescribed position, the primary radiator 4 is stabilized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parabolic antenna device which is used as, for example, a microwave band antenna device and which can perform polarization conversion by a simple operation.

[0002]

2. Description of the Related Art Conventionally, for example, a parabolic antenna device has been used as a microwave band antenna device for satellite communication. In this parabolic antenna device, in order to prevent high-frequency loss in the microwave band, electrical connection is made between a primary radiator that radiates or receives radio waves and an electronic device housing that houses, for example, a transmitter / receiver circuit. A waveguide is used for.

Further, when communication is performed via the parabolic antenna device, good communication cannot be performed unless the polarization directions of the transmitting side and the receiving side are the same. Therefore, polarization conversion is necessary if necessary. there were. An example of such a parabolic antenna device will be described with reference to FIGS. 7 to 10.

In FIG. 7, reference numeral 1 denotes a parabolic antenna device, and a reflecting mirror 2 for reflecting the radio wave of the parabolic antenna device 1 in a predetermined direction is a supporting member 3 attached to a column 3.
It is supported by A and installed at a predetermined place such as on the ground. Reference numeral 4 denotes a primary radiator attached to the position of the focal point of the reflecting mirror 2 by a supporting arm 3B provided extending from the supporting tool 3A. The primary radiator 4 is shown in FIG. 8, for example. 4A formed in a cylindrical shape
And a radiating portion 4B for radiating radio waves, and a flange portion 4C having a diameter larger than that of the flange portion 4A and fixed to the flange portion 4A on the radiating portion 4B side.

In the primary radiator 4, the flange portion 4A is inserted into the mounting hole 5A of the mounting plate 5 fixed to the tip of the support arm 3B, and the flange portion 4C is brought into contact with the mounting plate 5. It The mounting hole 5A is formed in a circular shape corresponding to the shape of the flange portion 4A.

[0006] 6 is formed of an elastic member, 1
A pressing metal fitting for mounting the next radiator 4 on the mounting plate 5. The radiation portion 4B can be inserted substantially in the center of the pressing metal fitting 6, and the insertion hole 6 having a shape smaller than the collar portion 4C.
A is formed. When the primary radiator 4 is attached to the mounting plate 5, the holding metal fitting 6 is inserted through the radiation portion 4B, and the central portion of the holding metal fitting 6 is brought into contact with the collar portion 4C.

On the other hand, the edge portion of the pressing metal member 6 is bent and formed into a substantially V shape, and the edge portion of the pressing metal member 6 and the mounting plate 5 are, for example, bolts 7, 7, 7, 7, nuts 8. ,
Tightened by 8, 8, 8. Then, the edge portion of the pressing metal member 6 is deformed in the direction of the mounting plate 5 and is attracted to be attached to the mounting plate 5, and the collar portion 4C is provided with the mounting plate 5 and the pressing metal member as shown in FIG. It is sandwiched between 6 and.

Further, for example, cylindrical first to fourth waveguides 9A to 9D are respectively flange-connected to the flange portion 4A, and one end edge portion of the waveguide 9 formed in a substantially L shape is formed. Flanged. The second waveguide 9B of the waveguide 9, for example, is provided with a measuring instrument 9E so that the gain of radio waves can be measured as necessary. At the other end of the waveguide 9, for example, an electronic device housing 10 accommodating a transmitting / receiving circuit (not shown) and the like is flange-connected.

With such a configuration, the parabolic antenna device 1 has the primary radiator 4 as shown in FIG.
Is rotated in the direction of arrow A, the flange portion 4A is rotated around the center of the mounting hole 5A, and in conjunction with the primary radiator 4, the waveguide 9 and the electronic device casing are linked. The body 10 rotates. Therefore, when performing polarization conversion or the like of the parabolic antenna device 1, the bolt 7,
7, 7, 7, nuts 8, 8, 8, 8 are loosened, and in that state, the primary radiator 4 is rotated in the direction of arrow A, for example. Further, while rotating the primary radiator 4 in the direction of the arrow A, the measuring device 9E measures the gain of the radio wave transmitted through the waveguide 9 and the like, and the mounting plate 5 is set so as to obtain the best condition. Adjustments are made to the mounting of the primary radiator 4 on the.
And again, the bolts 7, 7, 7, 7, nuts 8, 8,
8 and 8 are tightened, and the collar portion 4C is sandwiched between the mounting plate 5 and the holding metal fitting 6.

By rotating the primary radiator 4, the waveguide 9 and the electronic device housing 10 are interlocked with the primary radiator 4 with the center of the mounting hole 5A as the center. When the waveguide 9 and the electronic device housing 10 are rotated, they are tilted. In such a state, polarization conversion is performed by communicating via the parabolic antenna device 1.

[0011]

As described above, in the above parabolic antenna device, the collar portion of the primary radiator is sandwiched between the mounting plate and the pressing metal fitting. Further, one end edge portion of the waveguide is flange-connected to the flange portion of the primary radiator, and an electronic device housing is flange-connected to the other end edge portion. When polarization conversion is required, the flange portion of the primary radiator is made rotatable about the center of the mounting hole formed in the mounting plate, and the primary radiator is rotated. It was possible to perform polarization conversion by sandwiching the collar portion again.

However, according to the parabolic antenna device, the electronic device casing is provided with the above-mentioned 1 through the waveguide.
It is connected to the secondary radiator. Therefore, there is a problem in that the weight applied to the waveguide is large due to the weight of the electronic device casing, and the waveguide may be deformed and damaged due to the influence of strong wind or the like. Further, when performing polarization conversion, the collar portion is sandwiched between the mounting plate and the holding metal fitting, but the state when the primary radiator is rotated by the weight of the electronic device housing is long. There is a problem in that it cannot be held for a long time and good communication cannot be performed.

In view of the above, the present invention provides a parabolic antenna device which eliminates these problems, prevents the waveguide from being damaged, and can perform polarization conversion with the primary radiator being stabilized. With the goal.

[0014]

According to the present invention, a reflector for reflecting radio waves in a predetermined direction and a mounting plate provided in the vicinity of the focus position of the reflector are provided at the focus position of the reflector. A rotatably mounted primary radiator, a waveguide whose one edge is coupled to this primary radiator, and an electronic device housing coupled to the other edge of this waveguide. A support having a first support portion connecting the electronic device housing and the primary radiator and a second support portion connecting the electronic device housing and the mounting plate, and a first support member of the support member. And a means for moving the second supporting part around the mounting part of the primary radiator as a center.

[0015]

In the present invention, the primary radiator is provided at the focal point of the reflecting mirror, and the flange portion of the primary radiator is inserted into the mounting hole formed in the mounting plate. It is attached so as to be rotatable around its center. One end edge portion of the waveguide is flange-connected to the flange portion of the primary radiator, and an electronic equipment casing is flange-connected to the other end edge portion of the waveguide. The electronic device housing is connected to the primary radiator and the mounting plate by a support body having a first support portion and a second support portion. The second support portion of the mounting plate is movable around the mounting hole.

In the parabolic antenna device having such a configuration, the load of the electronic device casing applied to the waveguide can be alleviated by the support, and the waveguide can be prevented from being damaged. Further, when polarization conversion of the parabolic antenna device is required, by moving the second support part, the primary radiator attached to the support body is rotated, and is interlocked with this rotation. Then, the waveguide and the housing of the electronic device are tilted. Then, by fixing the second support portion to the mounting plate at a predetermined position, the primary radiator is held in a rotated state, and the waveguide and the electronic device housing are tilted. Held in. Therefore, it is possible to perform polarization conversion of the parabolic antenna device in a stable state.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. In the figure, 1 to 10 are the same as in the conventional example, and the same members are denoted by the same reference numerals and the description thereof is omitted.

That is, in FIG. 1 and FIG. 2, reference numeral 11 is a connecting plate which is attached so as to face the mounting plate 5. The connecting plate 11 is attached to connecting fittings 12 and 12 attached to the support arm 3B and the mounting plate 5, respectively. Further, 13 is arranged between the electronic device housing 10 and the connecting plate 11, and for example, the edge of the plate-like body is bent toward the mounting plate 5,
This is a support having first and second support portions 13A and 13B. The support 13 is fixed to one side wall of the electronic device housing 10, and an area facing the connecting plate 11 is opened.

A first tongue piece 14 is extendedly formed on the first support portion 13A of the support body 13, and the first tongue piece 1 is formed.
As shown in FIG. 3, a cutout portion 14A having a shape corresponding to the outer wall of the first waveguide 9A is formed on the surface 4. Then, the first tongue piece 14 is attached to the flange portion of the first waveguide tube 9A by, for example, screwing in a state where the cutout portion 14A is in contact with the outer wall of the first waveguide tube 9A. To be done.

A through hole 11A is formed in the connecting plate 11 at a position corresponding to the primary radiator 4, and the first waveguide 9A and the support 13 are formed through the through hole 11A. The first support portion 13A is led out, and the first waveguide 9A is flange-coupled to the flange portion 4A of the primary radiator 4.

On the other hand, the second support portion 13 of the support body 13
B is a lead-out hole 13 having a size corresponding to the diameter of the waveguide 9.
C is formed, and for example, the third waveguide 9C is located at the position of the lead-out hole 13C. A second tongue piece 15 is formed to extend on the second support portion 13B. The edge of the second tongue piece 15 is arranged in contact with the edge of one end of the angle plate 16. The angle plate 16 is formed in an arc shape as shown in FIG. 4 with the center of the mounting hole 5A formed in the mounting plate 5 as the center.

At the other edge of the angle plate 16, a scale display section 17 is displayed centering on the center of the mounting hole 5A. The scale display unit 17 includes a first scale display unit 17A and a second scale display unit 17B. The first scale display unit 17A and the second scale display unit 17 are provided.
“0 °” indicating the reference value is displayed in B. Reference value “0 °” displayed on the first scale display portion 17A
Is displayed on the angle plate 16 at a position on a straight line in the vertical direction from the center of the mounting hole 5A.

The reference value "0 °" displayed on the second scale display portion 17B is displayed on the angle plate 16 which is located on a straight line in the horizontal direction from the center of the mounting hole 5A.

Further, in the first scale display portion 17A and the second scale display portion 17B, + 5 ° clockwise from the reference value “0 °” around the center of the mounting hole 5A.
+ 10 °, ..., + 25 °, -5 °, -10 in the counterclockwise direction
The scale is displayed every 5 °, such as °, ..., -25 °. Further, corresponding to the scale, positioning holes 18, 18, ..., 18 are formed in the angle plate 16.
As shown in FIG. 5 (A), the angle plate 16 has the spacer 19 disposed between the angle plate 16 and the connecting plate 11 and is sandwiched by, for example, a countersunk screw 20 to connect the connecting plate 11 to each other. Is stuck to. Therefore, the connecting plate 1
A gap corresponding to the thickness of the spacer 19 is formed between 1 and the angle plate 16.

Reference numeral 21 is a slide plate which is formed by bending a plate-like member into a substantially V shape and is constituted by an attachment portion 21A and a slide portion 21B. The slide plate 21 is the support member 13 described above.
Is provided along the second support portion 13B and the second tongue piece 15. The attachment portion 21A of the slide plate 21 is attached to the second support portion 13B by, for example, screwing.

On the other hand, the slide portion 21 of the slide plate 21
B is a hole (not shown) formed in the second tongue piece 15.
A wing nut 23, for example, is screwed and tightened to a screw 22 protruding from a hole (not shown) formed in the slide portion 21 via. The tip of the slide portion 21B of the slide plate 21 extends to the vicinity of the scale display portion 17 of the angle plate 16, and a rectangular parallelepiped grip body 24 is provided at the tip of the slide portion 21B. There is.

In the grip body 24, an elongated hole 2 formed in an arc shape at a position corresponding to the positioning hole 18 formed in the angle plate 16 and centered on the center of the mounting hole 5A.
5 and, for example, when the waveguide 9 and the electronic device housing 10 are in the vertical state, they are formed at positions corresponding to the reference value “0 °” of the first scale display portion 17A of the angle plate 16. A reference line 26 is formed.

As shown in FIG. 6, a protective tube 27 with a collar is inserted into the elongated hole 25, and the protective tube 27 with the collar is movable within the range of the elongated hole 25. A fixing bolt 28 is screwed into the flanged protection tube 27, and the tip of the fixing bolt 28 is screwed into the positioning hole 18.

When the elongated hole 25 is extended, the side walls 24A and 24B of the grip body 24 have screw threaded holes 29 and 30.
Are formed, and these screw screw holes 29, 30 are
The first and second position adjusting screws 32 and 33 to which the nuts 31 and 31 are screwed are screwed together. The tip ends of the first and second position adjusting screws 32 and 33 are the protective tube 27 with the collar.
When the outer wall is abutted, the nuts 31, 31 are tightened as shown in FIG. 5 (B).

According to this structure, the load of the electronic device casing 10 is increased by the supporting member 13 to the mounting plate 5.
Is supported by the connecting plate 11. Therefore, the load of the electronic device housing 10 applied to the waveguide 9 is relieved by the support 13 and it is possible to prevent the waveguide 9 from being damaged.

When polarization conversion is not required when communication is performed via the parabolic antenna device 1, the reference line 26 formed on the grip body 24 is connected to the first plate of the angle plate 16.
It is matched with the position of a predetermined scale in the area of the scale display portion 17A. For example, when the position of the reference line 26 is matched with the position of the scale of "0 °", the flange portion 4A of the primary radiator 4 can be rotated about the center of the mounting hole 5A. Loosen the bolts 7, 7, 7, 7, nuts 8, 8, 8, 8 and the wing nuts 23, 23, and further, the fixing bolts 28 are the protection pipes 27 with flanges.
Removed from.

Since the angle plate 16 is fixed to the connecting plate 11, it does not move, but the gripper 24 can move along the angle plate 16 around the center of the mounting hole 5A. By moving the grasping body 24, the second tongue piece 15 is connected to the slide plate 21 by the screw 22, so that the second tongue piece 15 moves in conjunction with the movement of the grasping body 24. Then, the flange portion 4A of the primary radiator 4 is also rotated around the center of the mounting hole 5A.

By moving the gripper 24, the reference line 2 is moved.
When 6 is aligned with the position of the scale "0 °" of the first scale display portion 17A, the fixing bolt 28 is inserted into the protective tube 27 with the collar while being screwed, and the tip of the fixing bolt 28 is inserted. Is screwed into the positioning hole 18. Further, the wing nuts 23, 23 and the bolts 7, 7, 7, 7,
By tightening the nuts 8, 8, 8, 8, the second
The tongue piece 15 is fixed, and even if the waveguide 9 and the electronic device housing 10 are tilted, it is possible to maintain that state.

When it is desired to adjust the position of the reference line 26 of the grip body 24 to a position between the scale of 0 ° and + 5 ° of the first scale display portion 17A, the bolts 7, 7, 7,
7, nuts 8, 8, 8, 8 and the wing nuts 23, 23
And the nuts 31 and 31 screwed into the first and second position adjusting screws 32 and 33 are loosened. Further, the first position adjusting screw 32 is pulled out while being screwed into the screw screwing hole 29, and the second position adjusting screw 33 is tightened.

These first and second position adjusting screws 32,
The position of the reference line 26 is at a predetermined position between the scale 0 ° and + 5 ° of the first scale display portion 17A in a state where the tip of 33 is in contact with the outer wall of the collared protection tube 27. After adjustment, the nuts 31 and 31 are tightened and abutted on the side walls 24A and 24B of the grip body 24, respectively. And the wing nuts 23, 23 and the bolt 7,
7, 7, 7 and nuts 8, 8, 8, 8 are tightened, and the waveguide 9 and the electronic device housing 10 are held in an inclined state.

On the other hand, when communication is performed via the parabolic antenna device 1 and polarization conversion is required, the reference line 26 formed on the grip body 24 is displayed on the second scale display portion of the angle plate 16. The grip body 24 is moved so as to match the position of a predetermined scale in the area 17B. Even when polarization conversion is performed, the reference line 26 is moved after the grip body 24 is moved to the area of the second scale display portion 17B.
Is adjusted to a predetermined position on the second scale display portion 17B, or the second tongue piece 15 is fixed, since it is the same as the case where the polarization conversion described above is not necessary and the description thereof will be omitted. ..

In this way, the reference line 26 is moved to the area of the second scale display portion 17B, and the second tongue piece 15 is moved.
By fixing, the primary radiator 4 is stable and polarization conversion of the parabolic antenna device 1 can be performed even when the waveguide 9 and the electronic device housing 10 are inclined. Is. The present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention.

[0038]

As described above, according to the present invention, the primary radiator of the parabolic antenna device is rotatably mounted on the mounting plate, and the primary radiator is provided with an electronic device housing via a waveguide. Are connected. The electronic device housing and the primary radiator are connected by a first supporting portion of a supporting body, and the electronic device housing and the mounting plate are connected by a second supporting portion of the supporting plate. ing.

According to this structure, since the electronic device housing is supported by the primary radiator and the mounting plate by the support, the load of the electronic device housing on the waveguide is reduced. To be done. Therefore, damage to the waveguide can be prevented.

By moving the second support part around the mounting part where the primary radiator is mounted on the mounting plate, the primary radiator, the waveguide, and the electronic equipment casing are moved. Are rotated in conjunction with each other. Therefore, by moving the second support part and fixing it at a predetermined position, it is possible to perform polarization conversion of the parabolic antenna device in a stable state.

[Brief description of drawings]

FIG. 1 is a side view of a parabolic antenna device according to an embodiment of the present invention.

FIG. 2 is a partially cutaway sectional view showing a mounted state of a primary radiator according to an embodiment of the present invention.

FIG. 3 is an exploded perspective view showing a mounted state of a primary radiator according to an embodiment of the present invention.

FIG. 4 is a front view showing a state in which a primary radiator according to an embodiment of the present invention is attached.

5A and 5B show a fixed state of a second tongue piece of a support body according to an embodiment of the present invention, in which FIG. 5A is a partially cutaway sectional view and FIG.

FIG. 6 is an exploded perspective view of a grip body according to an embodiment of the present invention.

FIG. 7 is a side view of a parabolic antenna device according to a conventional example.

FIG. 8 is an exploded perspective view showing a mounted state of a primary radiator according to a conventional example.

FIG. 9 is a partially cutaway cross-sectional view showing a mounted state of a primary radiator according to a conventional example.

FIG. 10 is a front view showing a state in which a primary radiator according to a conventional example is attached.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Parabolic antenna device, 2 ... Reflector, 4 ... Primary radiator, 5 ... Mounting plate, 9 ... Waveguide, 10 ... Electronic equipment housing, 1
3 ... Support body, 13A ... 1st support part, 13B ... 2nd support part.

Claims (1)

[Claims] 1. A reflector, which reflects radio waves in a predetermined direction, and a mounting plate, which is provided in the vicinity of the focal point of the reflector, rotatably mounted at the focal point of the reflector.
A secondary radiator, a waveguide whose one end edge is coupled to the primary radiator, an electronic device housing coupled to the other end edge of the waveguide, the electronic device housing, and A support body having a first support portion for connecting a secondary radiator and a second support portion for connecting the electronic device housing and the mounting plate, and a second support portion of the support is the primary support portion. A parabolic antenna device comprising means for moving the radiator mounting portion around the center.