JP2006203374A - Antenna installation angle adjusting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antenna installation angle adjusting apparatus by which an installation angle of an opening antenna such as a horn antenna can be adjusted easily and highly accurately and the installation angle can be intentionally deviated highly accurately as necessary. <P>SOLUTION: This antenna installation angle adjusting apparatus 10 is mounted on opening portions of each of horn antennas 20A and 20B and used in adjusting the setting positions of each of the two horn antennas 20A and 20B opposing each other. The apparatus 10 is provided with a frame body 11 mounted on the opening portion of each of the horn antennas 20A and 20B and expanding and shrinking according to the size of each of the openings; and an angle adjusting mechanism 12 mounted on the frame body 11 and independently adjusting the installation angle of each of the horn antennas 20A and 20B opposing each other. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an antenna installation angle adjusting device used by being mounted on an aperture antenna, and more particularly to an antenna installation angle adjusting device capable of accurately adjusting the installation angles of two aperture antennas facing each other. is there.

  As a method for adjusting the antenna installation angle, for example, there are an antenna angle adjustment method described in Patent Document 1 and an antenna azimuth angle adjustment method described in Patent Document 2.

  In the antenna angle adjustment method described in Patent Document 1, as shown in FIG. 8, a laser emitter 5 is attached to the proximal end of the horizontal axis 3 of the antenna 1 and a sight 6 is attached to the distal end thereof. The laser beam L is emitted so as to pass through the sight 6 and the direction of the horizontal axis 3 of the antenna 1 is adjusted so that the laser beam L is along a predetermined position or line so that the antenna 1 is fixed. Yes. Furthermore, if the laser beam L is emitted from the laser emitter 5, the laser beam L is irradiated to the panel under measurement 7 through the sight 6. In this state, the height of the antenna 1 is adjusted by aligning the horizontal axis 3 of the antenna 1 horizontally with a leveling device or the like, or by aligning the column 2 vertically, and by aligning the laser beam L with the center of the panel 7 to be measured. The position is the same as the center O of the panel 7 to be measured.

  Moreover, in the antenna azimuth adjustment method described in Patent Document 2, an angle between a desired azimuth direction of the antenna body and a predetermined target selected on the map is obtained on a map including the installation position of the antenna. Next, fix the angle between the antenna azimuth direction of the antenna body and the scope to the angle obtained on the map using the scale plate and indicator board, and then move the antenna body to the position where the target can be seen on the scope By rotating, the azimuth angle of the antenna body is adjusted to a desired azimuth angle.

JP 09-298415 A JP 2002-084115 A

  However, in the case of the antenna angle adjustment method described in Patent Document 1, the horizontal axis 3 as the azimuth angle adjustment mechanism, the laser emitter 5 and the aiming 6 are integrated as the antenna 1, and the horizontal direction from the laser emitter 5 is reduced. In order to adjust the azimuth angle of the antenna 1 so that the laser light L is emitted so as to pass through the sighting 6 along the direction axis 3 and the laser light L hits a target position of an object to be measured such as the panel 7 to be measured. When an antenna is installed at an open site, the laser beam L is difficult to see due to the influence of direct sunlight, and it is difficult to accurately determine the target position, and it is difficult to accurately adjust the azimuth angle of the antenna 1. It was. Further, since the azimuth angle is adjusted while viewing the laser beam L, the laser beam L may be incident on the eyeball.

  Although the antenna angle adjustment method described in Patent Document 1 can be applied to an antenna 1 such as a log periodic antenna having a horizontal axis 1, an aperture antenna such as a horn antenna 1A shown in FIG. In this case, since there is no horizontal axis, the installation position and installation angle of the opposed horn antenna 1A cannot be adjusted even if a laser emitter and aiming are used. Even if a laser emitter or a sight can be attached to the horn antenna 1A, the laser light L is irradiated from the base end portion of the horn antenna 1A along the one surface (the upper surface in the figure). The irradiation direction of L is not perpendicular to the opening surface of the horn antenna 1A that is installed oppositely, and it is difficult to read the installation angle of the horn antenna 1A, and the installation position and installation angle of the horn antenna 1A are easily adjusted. There was a problem that it was not possible.

  Further, in the case of the antenna azimuth adjustment method described in Patent Document 2, when adjusting the azimuth of the antenna, between the desired azimuth direction of the antenna body and a predetermined target selected on the map Since the angle is obtained, the adjustment of the azimuth angle is complicated, and there is a problem that an error is likely to occur in the azimuth angle measurement on the map. In addition, this technique is a method for adjusting the azimuth angle, and there is a problem that the elevation angle of the antenna cannot be adjusted.

  The present invention has been made to solve the above-described problems, and can easily and accurately adjust the installation angle of an aperture antenna such as a horn antenna, and can intentionally increase the installation angle as necessary. An object of the present invention is to provide an antenna installation angle adjusting device that can be shifted to accuracy.

  The antenna installation angle adjusting device according to claim 1 of the present invention is an antenna installation angle that is used by being attached to the opening of each of the aperture antennas when adjusting the installation positions of the two aperture antennas facing each other. An angle adjustment mechanism that adjusts the installation angle of a frame that is attached to the opening and expands or contracts according to the size of the opening, and an opening antenna that is attached to the frame and faces each other. It is characterized by comprising.

  According to a second aspect of the present invention, there is provided the antenna installation angle adjusting device according to the first aspect, wherein the angle adjusting mechanism is an angle measuring scale or scale attached to the center of one side of the frame. It has a board and the string by which one end is connected with the base point of this scale or a scale board, It is characterized by the above-mentioned.

  According to a third aspect of the present invention, there is provided the antenna installation angle adjusting device according to the first or second aspect of the present invention, wherein the frame body is movable in accordance with a pair of struts and the pair of struts. It has a pair of attached guide columns and an adjustment member that adjusts the interval between the columns according to the pair of guide columns.

  According to a fourth aspect of the present invention, there is provided the antenna installation angle adjusting device according to any one of the first to third aspects, wherein the adjusting member is attached to both ends of the guide column. And an elastic member attached to the screw member.

  According to the first to fourth aspects of the present invention, the installation angle of the aperture antenna such as a horn antenna can be adjusted easily and with high accuracy, and the installation angle is intentionally set as necessary. It is possible to provide an antenna installation angle adjusting device capable of shifting the position with high accuracy.

  Hereinafter, the present invention will be described based on the embodiment shown in FIGS. 1 is a plan view showing a use state in which an embodiment of the antenna installation angle adjusting device of the present invention is mounted on a horn antenna, and FIG. 2 is a use state in which the antenna installation angle adjusting device shown in FIG. 1 is mounted on a horn antenna. FIG. 3 is a front view showing a use state in which the antenna installation angle adjusting device shown in FIG. 1 is mounted on a horn antenna, and FIG. 4 is a plan view showing a state in which the azimuth angle between the horn antennas arranged to face each other is adjusted. 5 is a side view showing the use state shown in FIG. 4, FIG. 6 is a side view showing a state of adjusting the elevation angle between the horn antennas shown in FIG. 4, and FIG. 7 is an antenna installation angle adjusting device shown in FIG. It is a front view which shows the state with a clearance gap between horn antennas.

  The antenna installation angle adjusting device 10 of the present embodiment is attached to an opening of an aperture antenna (for example, a horn antenna) 20 as shown in FIGS. 1 to 3, for example, and separated from each other as shown in FIGS. It is used for adjusting the installation position and the installation angle between the horn antennas 20A and 20B attached to the arranged support bodies 30A and 30B so as to be movable up and down. For example, when measuring antenna characteristics such as directivity characteristics of the horn antenna 20 and high-frequency characteristics of high-frequency electronic components in an anechoic chamber, the installation positions and installation angles of the two horn antennas 20A and 20B facing each other are accurately set. It needs to be adjusted. As shown in FIGS. 5 and 6, the antenna characteristics of the test horn antenna 20 </ b> B are obtained by installing the reference horn antenna 20 </ b> A on one support 30 </ b> A and the test horn antenna 20 </ b> B on the other support 30 </ b> B. Can be measured. Moreover, the high frequency characteristic etc. of a high frequency electronic component can be measured by installing horn antenna 20A, 20B facing each other.

  As shown in FIGS. 1 to 3, the antenna installation angle adjusting device 10 is attached to the frame body 11, which is attached to the opening end of the horn antenna 20 that expands in diameter and is expanded or contracted according to the opening portion. And an angle adjusting mechanism 12 for adjusting the installation angle between the two horn antennas 20 facing each other.

  As shown in FIGS. 1 to 3, for example, the frame 11 is attached to a pair of left and right support columns 11A and 11A, and is movable vertically (specifically, slidable) according to the pair of support columns 11A and 11A. A pair of upper and lower guide columns 11B, 11B formed in an elongated frame shape, and a pair of left and right sides that are slid in the left-right direction within the frame of the pair of guide columns 11B, 11B to adjust the distance between the columns 11A, 11A. Adjustment members (for example, screw members) 11C and 11C.

  As shown in FIG. 1, the left and right screw members 11C and 11C are in contact with the side surfaces of a pair of left and right struts 11A and 11A disposed in the frame of the guide strut 11B. Are adjusted close to each other along the upper and lower guide struts 11B and 11B according to the opening of the horn antenna 20, and the spacing between the left and right struts 11A and 11A is adjusted, and the horn is supported by these struts 11A and 11A. The opening of the antenna 20 is sandwiched from the left and right, and the columns 11A and 11A are fixed to the horn antenna 20. It is preferable to make a scale on the guide column 11B so that the amount of movement of the column 11A can be measured by the scale of the guide column 11B.

  Further, the screw member 11C has a coil spring 11D as shown in FIG. 1, and the coil spring 11D is mounted on a shaft portion located within the frame of the guide column 11B. Therefore, when the left and right screw members 11C and 11C are tightened, the left and right screw members 11C and 11C elastically fix the left and right struts 11A and 11A to the opening of the horn antenna 20 via the coil springs 11D and 11D. be able to. Further, the upper and lower guide columns 11B and 11B move in the vertical direction along the left and right columns 11A and 11A in accordance with the opening of the horn antenna 20, and the interval between the upper and lower guide columns 11B and 11B is adjusted. It is designed to be sandwiched from above and below.

  As shown in FIG. 1, the angle adjusting mechanism 12 includes a scale plate 12A for angle measurement attached to one side of the frame 11, that is, the center of the upper surface of the upper guide column 11B in this embodiment, and the scale plate 12A. And a thread 12B having one end detachably connected thereto. The material of the thread 12B is not particularly limited as long as it has a strength capable of withstanding the tension at the time of angle measurement, but a thin one is preferable in terms of measuring the angle using the scale plate 12A.

  The scale plate 12A is formed in a long and rectangular plate shape. At the center of the scale plate 12A in the longitudinal direction, a scale 12C for angle measurement formed in a semicircular shape is formed. By using this scale 12C, as shown in FIG. 4, the other horn antenna 20B with respect to one horn antenna 20A from the angle formed by the thread 12B connecting the two horn antennas 20A, 20B facing each other and the center line 12D of the scale 12C. Can be measured. The connection line connecting the circular arcs of the scale 12C is located on the long side of the scale plate 12A. The scale plate 12A is fixed to the upper surface of the guide column 11B so that the long side thereof coincides with the long side of the guide column 11B as shown in FIGS. 1 and 2, and a part of the scale plate 12A extends horizontally from the guide column 11B. However, if the angle can be measured, it is not always necessary to project horizontally. Further, a scale may be directly carved on the frame body 11.

  One end of the thread 12B is detachably connected to the center (base point) 12E of the scale 12C, and the other end of the thread 12B is a free end. When the free end of the thread 12B is pulled according to the center line 12D of the scale 12C, that is, the 90 ° angle of the scale 12C, the thread 12B is orthogonal to the opening surface of the horn antenna 20. The thread 12B is longer than the distance between the two horn antennas 20 and 20 installed facing each other. Accordingly, the thread 12B is shared by the two antenna angle adjusting devices 10, 10.

  Next, a method of adjusting the installation positions and installation angles of the two horn antennas 20A and 20B facing each other in FIGS. 4 and 5 using the antenna installation angle adjusting device 10 will be described. First, the two horn antennas 20A and 20B are attached and fixed to the separated supports 30A and 30B, respectively. Then, the antenna angle adjusting devices 10 and 10 are mounted on the two horn antennas 20A and 20B, respectively.

  In order to mount the antenna installation angle adjusting device 10, as shown in FIGS. 1 to 3, the distance between the left and right support pillars 11 </ b> A and 11 </ b> A and the upper and lower guide support pillars 11 </ b> B and 11 </ b> B is set to the opening of the horn antenna 20. The frame 11 is fitted so that the upper guide column 11B is placed on the opening of the horn antenna 20, and the long side of the upper guide column 11B is parallel to the upper side of the opening of the horn antenna 20. The frame 11 is disposed on the side. Next, the left and right screw members 11C and 11C of the upper guide column 11B are respectively operated, and the left and right columns 11A and 11A are elastically pressed via the coil springs 11D and 11D to move inward by the same dimension. The left and right struts 11A and 11A sandwich the opening of the horn antenna 20, and the left and right struts 11A and 11A are fixed in this state.

  Thereafter, the lower guide column 11B is pulled up along the left and right columns 11A, 11A and brought into contact with the lower side of the horn antenna 20. In this state, the left and right struts 11A and 11A are fixed to the opening of the horn antenna 20 using the left and right screw members 11C and 11C of the lower guide strut 11B. With the above operation, the mounting of the antenna angle adjusting device 10 to the horn antenna 20 is completed. As shown in FIGS. 4 and 5, the antenna angle adjusting device 10 is mounted on each of the two horn antennas 20A and 20B facing each other.

  Next, the azimuth angles of the two horn antennas 20A and 20B facing each other are adjusted using the angle adjustment mechanism 12. For this purpose, the free end of the thread 12B of the antenna angle adjusting device 10 attached to one horn antenna 20A is connected to the base point 12E of the angle adjusting mechanism 12 attached to the other horn antenna 20B. At this time, the thread 12B is stretched so that the thread 12B is not loosened as much as possible. At this stage, since the opening surfaces of the two horn antennas 20A and 20B are not parallel, the thread 12B is inclined from the center line 12E as shown in FIG. Therefore, one horn antenna 20A is rotated around the support 30A so that the center line 12D of the scale plate 12A coincides with the thread 12B. Similarly, the other horn antenna 20B is rotated around the support 30B so that the center line 12E coincides with the thread 12B. By this operation, the two horn antennas 20A and 20B have the same orientation as shown in FIGS. 4 and 5, and the opening surfaces thereof become parallel to each other. In addition, when the two horn antennas 20A and 20B are installed at exactly the same height, the two horn antennas 20A and 20B are installed with their respective opening surfaces completely facing each other and kept parallel. That's right.

  In order for the two horn antennas 20A and 20B to be parallel to each other at different heights, the antenna angle adjustment devices 10 of the two horn antennas 20A and 20B are each 90 ° as shown in FIG. Replace it so that it is in a rotated state. By this operation, the angle adjustment mechanism 12 is positioned on the side surface of the opening of the horn antennas 20A and 20B, and the elevation angle of the other horn antenna 20B with respect to one horn antenna 20A can be measured by the angle adjustment mechanism 12, and In addition, the two horn antennas 20A and 20B can be inclined, and the opening surfaces of the two horn antennas 20A and 20B can face each other and face each other in parallel.

  At this time, there may be a gap δ as shown in FIG. 7 between the lower guide column 12B and the opening surface of the horn antenna 20.

  As described above, according to the present embodiment, the frame 11 that is attached to each opening of the horn antennas 20A and 20B facing each other and expands / contracts according to the size of each opening, and the frame 11 Since the angle adjusting mechanism 12 that adjusts the installation angle between the horn antennas 20A and 20B that are attached and facing each other is provided, the frame bodies 11 and 11 are simply mounted on the two facing horn antennas 20A and 20B, respectively. The antenna angle adjusting devices 10 and 10 can be attached to the two horn antennas 20A and 20B, and the angle of the other horn antenna 20B with respect to one horn antenna 20A via the angle adjusting mechanism 12 attached to each frame 11 The azimuth angle or elevation angle can be measured easily and with high accuracy, and the two horn antennas 20A and 20B are respectively provided. It is possible to adjust the installation angle of easily and highly accurately. When it is necessary to intentionally change the installation angles of the two horn antennas 20A and 20B, the angle adjustment mechanism 12 is used to set the installation angles of the two horn antennas 20A and 20B as desired. The angle can be set quantitatively and reliably. Furthermore, even when the horn antennas 20A and 20B are installed outdoors such as an open site, the installation angle can be adjusted easily and with high accuracy without being influenced by direct sunlight. Further, since laser light is not used when measuring the installation angles of the horn antennas 20A and 20B, the laser light does not enter the eyeball of the measurer.

  Further, according to the present embodiment, the angle adjusting mechanism 12 includes the scale plate 12A attached to the center of one side of the frame 11, and the thread 12B having one end fixed to the base point 12E of the scale plate 12A. Measure the installation angle of the horn antennas 20A, 20B simply and with high accuracy simply by connecting to the base points 12E, 12E of the angle adjustment mechanisms 12, 12 mounted on the two horn antennas 20A, 20B facing each other with the thread 12B. Can do. The frame 11 includes a pair of support pillars 11A and 11A, a pair of guide support pillars 11B and 11B attached movably according to the pair of support pillars 11A and 11A, and each support pillar 11A according to the pair of guide support pillars 11B and 11B. And the screw members 11C and 11C for adjusting the interval of 11A, and by operating the screw members 11C and 11C, the frame body is not affected by the sizes of the openings of the horn antennas 20A and 20B. 11 can be easily attached to the openings of the horn antennas 20A and 20B. Further, since the screw members 11C are respectively attached to both ends of the guide column 11B and have the coil springs 11D, the frame body 11 is securely attached to the openings of the horn antennas 20A and 20B by the actions of the coil springs 11D and 11D. Can be fixed.

  In the above embodiment, the horn antenna 20 has been described as an example, but the present invention can be applied to any aperture antenna having an aperture surface. In the above embodiment, the screw member 11C and the coil spring 11D have been described as examples of means for adjusting and fixing the distance between the frame bodies 11, but a combination with an elastic member other than the coil spring may be used. The antenna angle adjusting device of the invention can be used not only in an anechoic chamber but also outdoors.

  The present invention can be suitably used when adjusting the installation position and installation angle of two aperture antennas facing each other.

It is a top view which shows the use condition which mounted | wore the horn antenna with one Embodiment of the antenna installation angle adjustment apparatus of this invention. It is a side view which shows the use condition which mounted | wore the horn antenna with the antenna installation angle adjustment apparatus shown in FIG. It is a front view which shows the use condition which mounted | wore the horn antenna with the antenna installation angle adjustment apparatus shown in FIG. It is a top view which shows the state which adjusted the azimuth between the horn antennas arrange | positioned facing. It is a side view which shows the use condition shown in FIG. It is a side view which shows the state which adjusts the elevation angle between horn antennas shown in FIG. It is a front view which shows the state in which there exists a clearance gap between the antenna installation angle adjustment apparatus shown in FIG. 1, and a horn antenna. It is a side view which shows the state which adjusts an antenna angle using the conventional antenna angle adjustment method. It is a side view which shows the state which applied the antenna angle adjustment method shown in FIG. 8 to the horn antenna.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Antenna angle adjustment apparatus 11 Frame 11A support | pillar 11B Guide support | pillar 11C Screw member (adjustment member)
11D coil spring (spring)
12 Angle adjustment mechanism 12A Scale plate 12B Thread 12C Scale 20, 20A, 20B Horn antenna (opening antenna)

Claims (4)

  An antenna installation angle adjusting device which is used by being attached to each opening of each of the opening antennas when adjusting the installation position of each of the two opening antennas facing each other, the antenna installation angle adjusting device being attached to the opening and the opening An antenna installation angle adjustment device comprising: a frame body that expands and contracts according to the size of the antenna; and an angle adjustment mechanism that adjusts the installation angle of each of the opening antennas attached to the frame body and facing each other.   The angle adjusting mechanism includes an angle measuring scale or scale plate attached to the center of one side of the frame body, and a string having one end connected to a base point of the scale or scale plate. Item 2. The antenna installation angle adjustment device according to Item 1.   The frame body includes a pair of support posts, a pair of guide support posts that are movably attached according to the pair of support posts, and an adjustment member that adjusts the interval between the support posts according to the pair of guide support posts. The antenna installation angle adjusting device according to claim 1 or 2, characterized in that. The said adjustment member has the screw member each attached to the both ends of the said guide support | pillar, and the elastic member with which this screw member was mounted | worn, The any one of Claims 1-3 characterized by the above-mentioned. The antenna installation angle adjusting device as described in 2.

Images