Wireless communication unit and angle adjustment method

Abstract

Provided are a wireless communication unit and an angle adjustment method with which it is possible to adjust an azimuthal angle, elevation and depression angles, and a polarization angle, with a simple structure. This wireless communication unit (100) comprises: an antenna device (1) including an antenna body (11) and an attachment member (12) that includes mechanisms (15, 16) for adjusting an azimuthal angle and elevation and depression angles of the antenna body (11), and a structure (14) for retaining a to-be-attached member (E); a wireless communication device (2) disposed on a back-surface part of the antenna device (1); a circular-arc-shaped guide part (24) formed in the wireless communication device (2); and a screw member (3) that penetrates the guide part (24) and that is for fixing the wireless communication device (2) to the antenna device (1). The wireless communication device (2) is rotated relative to the antenna device (1) by the screw member (3) being guided by the guide part (24) in a state where the screw member (3) is loosened.

Description

[Technical field]

[0001] The present disclosure relates to a wireless communication unit and an angle adjustment method. [Background technology]

[0002] Patent Document 1 discloses a technique relating to a structure for adjusting the azimuth angle, elevation angle, and polarization angle in a portable antenna device for communicating with an artificial satellite.

[0003] That is, in the technology described in Patent Document 1, a portable antenna device includes a tripod, a control device supported on the tripod via a rotation mechanism disposed on the upper part of the tripod, and a planar antenna connected to the control device via a deployment mechanism. The portable antenna device also includes a transmitting / receiving device integrally provided with the planar antenna (see paragraph

[0037] and Figures 1 to 4 of Patent Document 1).

[0004] The rotation mechanism includes a base, a guide plate fastened to the bottom surface of the base via fastening members, and two stoppers fastened to the bottom surface of the base via fastening members and restricting the rotation range of the movable leg together with the rotation range restricting member and the guide plate. The rotation mechanism is arranged coaxially with the base on the upper surface of the base, fastened to the bottom surface of the control device via fastening members, and includes a rotatable, approximately annular turntable. The rotation mechanism includes a rotation restricting member that restricts the rotation of the turntable (see paragraph

[0044] , Figures 4 and 5 of Patent Document 1). The azimuth angle is adjusted using the rotation mechanism (see paragraph

[0086] of Patent Document 1).

[0005] The planar antenna is supported by the antenna support member via a polarization angle adjustment mechanism that adjusts the polarization angle of the planar antenna (see paragraph

[0067] and FIG. 7 of Patent Document 1). The polarization angle adjustment mechanism includes a polarization angle display member, a polarization angle restriction member, a polarization angle adjustment member, and a polarization angle fixing member (see paragraphs

[0068] to

[0074] of Patent Document 1). The polarization angle is adjusted using the polarization angle adjustment mechanism (see paragraphs

[0093] to

[0098] of Patent Document 1).

[0006] A hole is formed in the center of the polarization angle restricting member, while an elevation angle adjusting member is connected to the center of the polarization angle adjusting member (see paragraph

[0075] of Patent Document 1). The elevation angle adjusting member includes a fixing member that fixes one end of the elevation angle adjusting member to the polarization angle adjusting member, and a turnbuckle that is housed in a guide connected to the fixing member. The elevation angle adjusting member also includes an engagement member that engages the other end of the elevation angle adjusting member with an elevation angle fixing member extending from the arm bridge member (see paragraph

[0076] , Figures 7 and 8 of Patent Document 1). The elevation angle is adjusted using the elevation angle adjusting member (see paragraphs

[0091] and

[0092] of Patent Document 1). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2005-333234 A Summary of the Invention [Problem to be solved by the invention]

[0008] In general, there is a demand for simplification of structures for adjusting the azimuth, elevation and polarization angles.

[0009] Here, the structure described in Patent Document 1 includes a tripod, a rotation mechanism, a control device, a deployment mechanism, a planar antenna, and a transmitting / receiving device, as described above. A rotation mechanism provided between the tripod and the control device is used to adjust the azimuth angle. A polarization angle adjustment mechanism provided between the planar antenna and the deployment mechanism is used to adjust the polarization angle. An elevation angle adjustment member provided between the polarization angle adjustment mechanism and the deployment mechanism is used to adjust the elevation angle. As described above, there are many components for achieving the angle adjustment, which causes a problem that it is difficult to simplify such a structure.

[0010] In view of the above-mentioned problems, an object of the present disclosure is to provide a wireless communication unit and an angle adjustment method that are capable of adjusting the azimuth angle, elevation / depression angle, and polarization angle with a simple structure. [Means for solving the problem]

[0011] A wireless communication unit according to one aspect of the present disclosure comprises an antenna device including an antenna body and an attachment member including a mechanism for adjusting the azimuth angle and elevation / depression angle of the antenna body and a structure for holding a member to be attached, a wireless communication device arranged on a rear portion of the antenna device, an arc-shaped guide portion formed on the wireless communication device, and a screw member that penetrates the guide portion and fixes the wireless communication device to the antenna device, and when the screw member is loosened, the screw member is guided by the guide portion to rotate the wireless communication device relative to the antenna device.

[0012] An angle adjustment method according to one aspect of the present disclosure involves adjusting the azimuth angle and elevation / depression angle of an antenna body of the antenna device using a mechanism included in a mounting member of the antenna device, loosening a screw member that passes through an arc-shaped guide portion formed on a wireless communication device arranged on the rear part of the antenna device and secures the wireless communication device to the antenna device, and with the screw member in the loosened state, guiding the screw member by the guide portion to rotate the wireless communication device relative to the antenna device, thereby adjusting the polarization angle of the wireless communication device, and when the adjustment of the polarization angle is completed, tightening the screw member to secure the wireless communication device to the antenna device. Effect of the Invention

[0013] According to the present disclosure, it is possible to provide a wireless communication unit and an angle adjustment method that are capable of adjusting the azimuth angle, elevation / depression angle, and polarization angle with a simple structure. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view showing a main part of a wireless communication unit according to the first embodiment. [Diagram 2]FIG. 2 is an enlarged perspective view of a portion including an attachment member in the wireless communication unit according to the first embodiment, showing an example of a rotation direction with respect to the azimuth angle direction. [Diagram 3] FIG. 3 is an enlarged perspective view of a portion including an attachment member in the wireless communication unit according to the first embodiment, and is a perspective view showing an example of a rotation direction with respect to the elevation / depression angle directions. [Figure 4] FIG. 4 is a perspective view of an antenna device in a wireless communication unit according to the first embodiment, including a connector of the antenna device. [Diagram 5] FIG. 5 is a perspective view of a wireless communication device in the wireless communication unit according to the first embodiment, including a connector of the wireless communication device. [Figure 6] FIG. 6 is an enlarged perspective view of a portion including a guide portion and a screw member in the wireless communication unit according to the first embodiment. [Figure 7] FIG. 7 is a perspective view showing a screw member in the wireless communication unit according to the first embodiment. [Figure 8] FIG. 8 is a perspective view showing a state in which the screw member penetrates the guide portion in the wireless communication unit according to the first embodiment, and is a perspective view showing an example of a rotation direction with respect to the polarization angle direction. [Figure 9A] FIG. 9A is a rear view showing a main part of the wireless communication unit according to the first embodiment, and is a rear view showing an example of a state in which the polarization angle is set to 0 degrees. [Figure 9B] FIG. 9B is a rear view showing a main part of the wireless communication unit according to the first embodiment, and is a rear view showing an example of a state in which the polarization angle is set to −5 degrees. [Figure 9C] FIG. 9C is a rear view showing a main part of the wireless communication unit according to the first embodiment, and is a rear view showing an example of a state in which the polarization angle is set to +5 degrees. [Figure 10] FIG. 10 is a perspective view of the antenna device in the wireless communication unit according to the first embodiment, and is a perspective view including another screw member. [Figure 11]FIG. 11 is a rear view of the wireless communication device in the wireless communication unit according to the first embodiment, and is a rear view including another guide portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. [First embodiment] FIG. 1 is a perspective view showing a main part of the wireless communication unit according to the first embodiment. FIG. 2 is an enlarged perspective view of a part including an attachment member in the wireless communication unit according to the first embodiment, showing an example of a rotation direction with respect to the azimuth angle direction. FIG. 3 is an enlarged perspective view of a part including an attachment member in the wireless communication unit according to the first embodiment, showing an example of a rotation direction with respect to the elevation and depression angle direction. FIG. 4 is a perspective view of an antenna device in the wireless communication unit according to the first embodiment, including a connector of the antenna device. FIG. 5 is a perspective view of a wireless communication device in the wireless communication unit according to the first embodiment, including a connector of the wireless communication device. FIG. 6 is an enlarged perspective view of a part including a guide part and a screw member in the wireless communication unit according to the first embodiment. FIG. 7 is a perspective view of a screw member in the wireless communication unit according to the first embodiment. FIG. 8 is a perspective view showing a state in which the screw member in the wireless communication unit according to the first embodiment has penetrated the guide part, showing an example of a rotation direction with respect to the polarization angle direction. FIG. 9A is a rear view showing a main part of the wireless communication unit according to the first embodiment, showing an example of a state in which the polarization angle is set to 0 degrees. Fig. 9B is a rear view showing a main part of the wireless communication unit according to the first embodiment, showing an example of a state in which the polarization angle is set to -5 degrees. Fig. 9C is a rear view showing a main part of the wireless communication unit according to the first embodiment, showing an example of a state in which the polarization angle is set to +5 degrees. The wireless communication unit according to the first embodiment will be described with reference to Figs. 1 to 8 and Figs. 9A to 9C.

[0016] The wireless communication unit 100 is disposed opposite another wireless communication unit (not shown) (hereinafter referred to as an "opposing station") and performs point-to-point wireless communication with the opposing station. For example, radio waves in the 80 GHz band (so-called "E band") are used for such wireless communication. The wireless communication device 2 of the wireless communication unit 100 supports wireless communication by polarization multiplexing using vertically polarized waves and horizontally polarized waves. In other words, the wireless communication device 2 has an XPIC (Cross Polarization Interference Canceller) function.

[0017] 1, the wireless communication unit 100 includes an antenna device 1. The antenna device 1 includes an antenna body 11 and an attachment member 12.

[0018] The antenna body 11 is formed of, for example, an antenna compatible with point-to-point wireless communication using E-band radio waves. The antenna body 11 is also formed of an antenna compatible with wireless communication by polarization multiplexing using vertical polarization and horizontal polarization. The antenna body 11 may be formed of an antenna compatible with both such wireless communication by polarization multiplexing and wireless communication by single polarization using vertical polarization or horizontal polarization. In the example shown in FIG. 1 etc., the antenna body 11 is formed of a circular planar antenna.

[0019] The mounting member 12 is formed of, for example, a dedicated metal fitting. The mounting member 12 is fixed to the rear portion of the antenna body 11. Here, the mounting member 12 has an arm portion 13 extending to the side of the antenna device 1. A structure (hereinafter sometimes referred to as a "holding structure") 14 for holding a member having a predetermined shape (for example, columnar, cylindrical or plate-like) by clamping or gripping it is provided at the tip of the arm portion 13. In the example shown in Fig. 1 etc., the holding structure 14 is for holding a columnar or cylindrical member by clamping it.

[0020] The antenna device 1 is attached to a member E (hereinafter referred to as the "attachment target member") to which the antenna device 1 is to be attached by the holding structure 14 holding the member E to which the antenna device 1 is to be attached. The attachment target member E is, for example, integral with a building (such as a high-rise building or a steel tower) not shown in the drawings, and is provided outside the building.

[0021] 1 and 2, a mechanism (hereinafter sometimes referred to as a "first rotation mechanism") 15 is provided on the arm 13 for rotating the antenna body 11 in the azimuth direction with respect to the mounting target member E when the antenna device 1 is mounted on the mounting target member E. The double-headed arrow A1 in FIG. 2 indicates the rotation direction of the antenna body 11 by the first rotation mechanism 15.

[0022] In the example shown in FIG. 2, a substantially semi-cylindrical portion (not shown) which is the root portion of the holding structure 14 is disposed inside the substantially box-shaped portion 15_1. The axis (not shown) of the substantially semi-cylindrical portion serves as the rotation axis. In addition, the holding structure 14 is provided with a substantially cylindrical portion 15_2 which is parallel to the attachment target member E. By tightening the bolt B1 which penetrates the substantially cylindrical portion 15_2 (more specifically, by tightening a pair of nuts which are passed through the bolt B1 and which are disposed so as to sandwich the substantially cylindrical portion 15_2), the relative position of the substantially cylindrical portion 15_2 with respect to the substantially box-shaped portion 15_1 is fixed. This restricts the rotation of the root portion of the holding structure 14 with respect to the substantially box-shaped portion 15_1. On the other hand, by loosening the bolt B1 (more specifically, by loosening the pair of nuts), the relative position of the substantially cylindrical portion 15_2 with respect to the substantially box-shaped portion 15_1 becomes variable within a predetermined range. This allows the base portion of the holding structure 14 to be rotatable within a predetermined range relative to the substantially box-shaped portion 15_1.

[0023] That is, in the example shown in Fig. 2, by tightening the bolt B1, the rotation of the first rotation mechanism 15 is restricted. On the other hand, by loosening the bolt B1, the first rotation mechanism 15 is allowed to rotate freely. The rotation range of the antenna body 11 by the first rotation mechanism 15 is set to an angle range of ±15 degrees, for example, with the state shown in Figs. 1 and 2 being the reference value (0 degrees). Note that the mounting height of the antenna device 1 with respect to the mounting target member E can also be adjusted by loosening the other pair of nuts 14_1, 14_2 in the holding structure 14.

[0024] 1 and 3, a mechanism (hereinafter sometimes referred to as a "second rotation mechanism") 16 is provided on the arm 13 for rotating the antenna body 11 in the elevation / depression angle direction with respect to the mounting target member E when the antenna device 1 is mounted on the mounting target member E. The double-headed arrow A2 in FIG. 3 indicates the rotation direction of the antenna body 11 by the second rotation mechanism 16.

[0025] In the example shown in FIG. 3, an arc-shaped hole 16_2 is formed in a substantially plate-shaped portion 16_1, which is the base portion of the first rotation mechanism 15, and a bolt B2 is inserted through the arc-shaped hole 16_2. A male screw portion (not shown) of the bolt B2 is screwed into a female screw portion (not shown) of a substantially box-shaped portion 16_3, which is the base portion of the arm portion 13. By loosening the bolt B2, the substantially plate-shaped portion 16_1 becomes rotatable relative to the substantially box-shaped portion 16_3 within a predetermined range. On the other hand, by tightening the bolt B2, the rotation of the substantially plate-shaped portion 16_1 relative to the substantially box-shaped portion 16_3 is restricted. Note that the rotation axis (i.e., the rotation axis of the substantially plate-shaped portion 16_1) for such rotation is omitted from the illustration because it is disposed inside the substantially box-shaped portion 16_3.

[0026] That is, in the example shown in Fig. 3, by tightening the bolt B2, the rotation of the second rotation mechanism 16 is restricted. On the other hand, by loosening the bolt B2, the second rotation mechanism 16 is allowed to rotate freely. The rotation range of the antenna body 11 by the second rotation mechanism 16 is set to an angle range of ±15 degrees, for example, with the state shown in Figs. 1 and 3 as the reference value (0 degrees).

[0027] As shown in Fig. 1, the wireless communication device 2 is disposed on the rear portion of the antenna device 1. In the wireless communication device 2, a transmitting circuit and a receiving circuit (not shown) are housed inside a housing. That is, the wireless communication device 2 includes a housing, and a transmitting circuit and a receiving circuit (not shown). The housing of the wireless communication device 2 is composed of a substantially box-shaped housing housing 22 having a flange portion 21, and a substantially plate-shaped housing cover 23 provided along the opening surface and flange surface of the housing housing 22.

[0028] The antenna device 1 and the wireless communication device 2 are electrically connected to each other by connectors C1 and C2 that function as a waveguide. Fig. 4 shows the connector C1 provided in the antenna device 1. On the other hand, Fig. 5 shows an example of the connector C2 provided in the wireless communication device 2. As shown in Fig. 4, the connector C1 has a substantially cylindrical shape and is disposed in the center of the antenna device 1. Also, as shown in Fig. 5, the connector C2 has a substantially cylindrical shape and is disposed in the center of the wireless communication device 2.

[0029] That is, radio waves of each polarized wave output by the wireless communication device 2 are input to the antenna device 1 via the connectors C1 and C2. The input radio waves are transmitted to the opposite station by the antenna device 1. On the other hand, radio waves of each polarized wave transmitted by the opposite station are received by the antenna device 1. The received radio waves are input to the wireless communication device 2 via the connectors C1 and C2.

[0030] Here, the wireless communication device 2 is fixed to the antenna device 1 in the following manner.

[0031] That is, a guide portion is formed in the wireless communication device 2. Specifically, for example, as shown in Fig. 1 etc., arc-shaped holes 24 penetrating the flange portion 21 and the housing cover 23 are formed in the four corners of the wireless communication device 2. These holes 24 are arranged concentrically with the central axis of the housing of the wireless communication device 2 (the central axis of the connectors C1, C2). These holes 24 form the guide portion.

[0032] A screw member is used to fix the wireless communication device 2. Specifically, for example, as shown in Fig. 6 and Fig. 7, the screw member is a bolt 3. A thread is formed on a tip portion 31 of the bolt 3. In other words, a thread is not formed on a neck portion 33, which is a portion between the tip portion 31 and the head portion 32 of the bolt 3. As a result, the diameter of the neck portion 33 is smaller than the diameter of the tip portion 31 including the thread (i.e., the outer diameter of the tip portion 31). The width of the hole 24 (the length of the hole 24 in the minor axis direction) is set to a value corresponding to the diameter of the neck portion 33 (a value slightly larger than the diameter of the neck portion 33).

[0033] As shown in Fig. 6, in the flange portion 21, a female screw portion 25 corresponding to the thread of the bolt 3 is formed in the center of each hole 24. Also, in the rear portion of the antenna device 1 (more specifically, in the rear portion of the mounting member 12), a female screw portion 17 corresponding to the tip portion 31 of the bolt 3 is formed. Also, as shown in Fig. 8, in the housing cover 23, a widened portion 26 corresponding to the outer diameter of the tip portion 31 is formed in the center of each hole 24.

[0034] First, from the rear side of the wireless communication device 2 (i.e., from the side of the housing 22), the tip portions 31 of the four bolts 3 are screwed into the female thread portions 25 of the four holes 24, respectively. In this state, each bolt 3 is turned clockwise. As a result, the tip portions 31 of each bolt 3 pass through the female thread portions 25 and the widened portions 26, and the neck portions 33 of each bolt 3 pass through the holes 24. At this time, as described above, the width of the holes 24 is set to a value corresponding to the diameter of the neck portions 33. In addition, the head portions of the bolts 3 are 32The outer diameter of the bolt 3 and the outer diameter of the tip portion 31 are larger than the diameter of the neck portion 33 and the width of the hole 24. This prevents the bolt 3 from falling off the wireless communication device 2.

[0035] Next, the tip portions 31 of the four bolts 3 are screwed into the four female screw portions 17, respectively. In this state, by tightening each of the bolts 3 (i.e., by further turning each of the bolts 3 clockwise), the wireless communication device 2 is fixed to the antenna device 1. On the other hand, when each of the bolts 3 is loosened relative to the female screw portions 17, the neck portions 33 of each of the bolts 3 slide against the inner wall portions of the holes 24, as shown in Fig. 8, so that the wireless communication device 2 is rotatable in the polarization angle direction. In other words, the wireless communication device 2 is rotatable in the polarization angle direction so that each of the screw members is guided by a guide portion.

[0036] 8 indicates the rotation direction of the wireless communication device 2 relative to the antenna device 1. By rotating the wireless communication device 2 in this direction, the polarization angle of the wireless communication device 2 (i.e., the inclination angle of each polarization in the radio waves transmitted or received by the wireless communication unit 100) changes. The range of such rotation is set, for example, to an angle range of ±5 degrees, with the state in which each bolt 3 is placed in the center of the hole 24 being the reference value (0 degrees).

[0037] That is, Fig. 9A shows a state in which the polarization angle is set to a reference value (0 degrees). In contrast, Fig. 9B shows a state in which the polarization angle has changed from the reference value by -5 degrees (5 degrees counterclockwise on the page) due to rotation of the wireless communication device 2. On the other hand, Fig. 9C shows a state in which the polarization angle has changed from the reference value by +5 degrees (5 degrees clockwise on the page) due to rotation of the wireless communication device 2.

[0038] In this manner, the main part of the wireless communication unit 100 is constructed.

[0039] Next, a method for adjusting the azimuth angle, elevation angle, and polarization angle in the wireless communication unit 100 will be described.

[0040] The wireless communication device 2 is fixed in advance to the antenna device 1 using a bolt 3. The antenna device 1 is also attached in advance to an attachment target member E by an attachment member 12. A counter station (not shown) is also installed in advance.

[0041] First, in a first step, an operator (not shown) adjusts the azimuth angle and the elevation / depression angles of the antenna device 1.

[0042] That is, the worker loosens the bolt B1 in the mounting member 12. This allows the first rotation mechanism 15 to rotate freely. That is, the antenna body 11 is allowed to rotate freely in the azimuth direction relative to the mounting target member E. In this state, the worker rotates the antenna body 11 in the azimuth direction while monitoring the reception level of the radio waves from the wireless communication device 2. The worker tightens the bolt B1 at an angle position where the reception level becomes large (i.e., when the adjustment of the azimuth angle is completed). This restricts the rotation of the first rotation mechanism 15. In this manner, the azimuth angle of the antenna device 1 is adjusted within the range of ±15 degrees.

[0043] The worker also loosens bolt B2 in the mounting member 12. This allows the second rotation mechanism 16 to rotate freely. That is, the antenna body 11 is now in a state where it can rotate freely in the elevation / depression angle directions relative to the mounting target member E. In this state, the worker rotates the antenna body 11 in the elevation / depression angle directions while monitoring the reception level of the radio waves from the wireless communication device 2. The worker tightens bolt B2 at an angle position where the reception level becomes large (i.e., when the adjustment of the elevation / depression angle is completed). This restricts the rotation of the second rotation mechanism 16. In this manner, the elevation / depression angle of the antenna device 1 is adjusted within the range of ±15 degrees.

[0044] Next, in a second step, the worker adjusts the polarization angle of the wireless communication device 2.

[0045] That is, the worker loosens each bolt 3. This allows the wireless communication device 2 to rotate freely in the polarization angle direction relative to the antenna device 1. The worker rotates the wireless communication device 2 in the polarization angle direction while monitoring the characteristics of wireless communication by the wireless communication unit 100. More specifically, the worker rotates the wireless communication device 2 in the polarization angle direction while monitoring the XPD (Cross Polarization Discrimination) characteristics. The worker tightens each bolt 3 at an angle position where such characteristics are improved (i.e., when the adjustment of the polarization angle is completed). This restricts the rotation of the wireless communication device 2 relative to the antenna device 1. In other words, the wireless communication device 2 is fixed to the antenna device 1. In this way, the polarization angle of the wireless communication device 2 is finely adjusted within a range of ±5 degrees.

[0046] Next, the effects of using the wireless communication unit 100 will be described.

[0047] First, as described above, by using the wireless communication unit 100, in addition to adjusting the azimuth angle and the elevation / depression angle, the polarization angle can be adjusted. Specifically, for example, after adjusting the azimuth angle and the elevation / depression angle within a range of ±15 degrees, the polarization angle can be finely adjusted within a range of ±5 degrees. By adjusting the polarization angle in this way, the XPD can be improved. In particular, in wireless communication by polarization multiplexing using vertical polarization and horizontal polarization, the XPD is usually lower than in wireless communication by single polarization using vertical polarization or horizontal polarization. For this reason, it is preferable to improve the XPD by adjusting the polarization angle.

[0048] Secondly, in the wireless communication unit 100, a structure for adjusting the polarization angle is realized by a structure (including a guide portion and a screw member) for fixing the wireless communication device 2 to the antenna device 1. In other words, a structure for fixing the wireless communication device 2 to the antenna device 1 is realized by a structure for adjusting the polarization angle. Therefore, it is possible to reduce the number of parts compared to a case where these structures are provided separately from each other. As a result, the structure of the wireless communication unit 100 can be simplified.

[0049] Thirdly, in the wireless communication unit 100, the mechanism for adjusting the azimuth angle (first rotation mechanism 15), the mechanism for adjusting the elevation / depression angle (second rotation mechanism 16), and the structure for adjusting the polarization angle (including the guide portion and the screw member) are all concentrated and arranged on the rear portion of the antenna device 1. This makes it easier to adjust these angles compared to when these mechanisms and structures are arranged separately. In particular, when the mounting target member E is provided at a high place (for example, a high-rise building or a steel tower), the ease of adjusting these angles can shorten the time required for work at such a high place.

[0050] Next, the advantages of the wireless communication unit 100 compared to the technique described in Patent Document 1 will be described.

[0051] As described above, the portable antenna device described in Patent Document 1 includes a tripod, a rotation mechanism, a control device, a deployment mechanism, a planar antenna, and a transmission / reception device. A rotation mechanism provided between the tripod and the control device is used to adjust the azimuth angle. A polarization angle adjustment mechanism provided between the planar antenna and the deployment mechanism is used to adjust the polarization angle. An elevation angle adjustment member provided between the polarization angle adjustment mechanism and the deployment mechanism is used to adjust the elevation angle. As described above, there are many components for achieving the angle adjustment, which causes a problem that it is difficult to simplify such a structure.

[0052] In contrast, the wireless communication unit 100 includes an antenna body 11, an attachment member 12, a wireless communication device 2, and a screw member (more specifically, a bolt 3). A mechanism for adjusting the azimuth angle (first rotation mechanism 15) and a mechanism for adjusting the elevation / depression angles (second rotation mechanism 16) are both provided in the attachment member 12. In addition, a structure for fixing the wireless communication device 2 to the antenna device 1 (including a guide portion and a screw member) realizes a structure for adjusting the polarization angle.

[0053] In this way, in the wireless communication unit 100, it is possible to adjust the azimuth angle, elevation / depression angle, and polarization angle, and it is possible to reduce the number of components for adjusting these angles compared to the portable antenna device described in Patent Document 1. This makes it possible to simplify the structure.

[0054] In addition, in the portable antenna device described in Patent Document 1, the rotation mechanism is provided on the bottom of the control device, and the polarization angle adjustment mechanism and the elevation angle adjustment member are provided on the back of the planar antenna. In other words, the mechanism for adjusting the azimuth angle (rotation mechanism), the mechanism for adjusting the polarization angle (polarization angle adjustment mechanism), and the member for adjusting the elevation angle (elevation angle adjustment member) are arranged separately. This causes a problem in that the worker needs to move or change his / her posture significantly when adjusting the azimuth angle, elevation angle, and polarization angle.

[0055] In contrast, in the wireless communication unit 100, the mounting member 12 having the first rotation mechanism 15 and the second rotation mechanism 16 is provided on the rear part of the antenna body 11. Also, on the rear part of the antenna device 1, a structure for adjusting the polarization angle is realized by a structure for fixing the wireless communication device 2. Therefore, as described above, the mechanism for adjusting the azimuth angle, the mechanism for adjusting the elevation and depression angles, and the mechanism for adjusting the polarization angle are arranged together on the rear part of the antenna device 1. Therefore, compared to the portable antenna device described in Patent Document 1, it is possible to reduce the movement and change of posture of the worker when adjusting these angles. In other words, it is possible to facilitate the work of adjusting these angles.

[0056] Next, a modification of the wireless communication unit 100 will be described with reference to FIG.

[0057] The screw member is not limited to the bolt 3. For example, as shown in FIG. 10, instead of forming the female screw portion 17 on the rear part of the antenna device 1, a bolt-shaped member 4 may be fixed. The screw member may be composed of the bolt-shaped member 4 and a nut-shaped member 5 that screws into the male screw portion of the bolt-shaped member 4. In this case, the width of the hole 24 is set to a value corresponding to the outer diameter of the male screw portion of the bolt-shaped member 4. In this case, the female screw portion 25 and the widened portion 26 are not necessary in the hole 24.

[0058] In this case, the wireless communication device 2 is fixed to the antenna device 1 as follows. First, the wireless communication device 2 is placed on the rear surface of the antenna device 1 with the male threads of the bolt-like members 4 passing through the individual holes 24. Next, the nut-like members 5 are screwed into the tips of the male threads of the individual bolt-like members 4 from the rear surface side of the wireless communication device 2 (i.e., from the case housing 22 side). In this state, the wireless communication device 2 is fixed to the antenna device 1 by tightening the nut-like members 5. Furthermore, the wireless communication device 2 becomes freely rotatable with respect to the antenna device 1 by loosening the nut-like members 5.

[0059] Next, another modified example of the wireless communication unit 100 will be described with reference to FIG.

[0060] The guide portion is not limited to the arc-shaped hole 24. For example, as shown in Fig. 11, the guide portion may be configured with a notched groove 27 having a shape in which one end of the arc-shaped hole 24 is opened. That is, the guide portion may be configured with the arc-shaped groove 27. In this case, the female thread portion 25 and the widened portion 26 are not necessary in each groove 27.

[0061] In this case, the wireless communication device 2 is fixed to the antenna device 1 in the following manner.

[0062] First, the tip portion 31 of each bolt 3 is screwed into the female screw portion 17. In this state, the wireless communication device 2 is attached to the rear portion of the antenna device 1 while rotating the wireless communication device 2 so that the neck portion 33 of the bolt 3 enters into each groove 27 from the opening at one end thereof. With the wireless communication device 2 attached, the bolt 3 is tightened to fix the wireless communication device 2 to the antenna device 1. Furthermore, by loosening the bolt 3, the wireless communication device 2 becomes freely rotatable relative to the antenna device 1.

[0063] Next, another modification of the wireless communication unit 100 will be described.

[0064] The wireless communication unit 100 may perform point-to-point wireless communication using radio waves of another frequency band instead of performing point-to-point wireless communication using radio waves of the E band. That is, the antenna device 1 and the wireless communication device 2 may be compatible with transmission and reception of radio waves of the other frequency band.

[0065] Furthermore, the wireless communication unit 100 may perform wireless communication using a single polarized wave with vertical polarization or horizontal polarization, instead of performing wireless communication using polarization multiplexing using vertical polarization and horizontal polarization. That is, the wireless communication device 2 may be a device that supports wireless communication using such a single polarized wave, instead of a device that supports wireless communication using such polarization multiplexing. In this case, the wireless communication device 2 rotates with respect to the antenna device 1, thereby adjusting the polarization angle in the single polarized wave.

[0066] Here, the shape of the antenna body 11 may be any shape that corresponds to the wireless communication by the wireless communication unit 100. Therefore, the antenna body 11 is not limited to a circular planar antenna. The antenna body 11 may be, for example, a rectangular planar antenna.

[0067] Moreover, the female screw portion 17 may be formed on the back surface of the antenna body 11 instead of being formed on the mounting member 12. In other words, the mounting member 12 may not have the female screw portion 17. This also applies to the bolt-shaped member 4. In other words, the shape of the mounting member 12 is not limited to the specific examples shown in Figs. 1 to 10. The mounting member 12 may include at least a mechanism for adjusting the azimuth angle and the elevation / depression angle, and may include a structure for holding the mounting target member E.

[0068] Although the present disclosure has been described above with reference to the embodiments, the present disclosure is not limited to the above embodiments. Various modifications that can be understood by a person skilled in the art can be made to the configuration and details of the present disclosure within the scope of the present disclosure.

[0069] A part or all of the above-described embodiments can be described as, but is not limited to, the following supplementary notes. [Note] [Appendix 1] An antenna device including an antenna body and a mounting member including a mechanism for adjusting the azimuth angle and the elevation / depression angle of the antenna body and a structure for holding a mounting target member; a wireless communication device disposed on a rear surface of the antenna device; An arc-shaped guide portion formed on the wireless communication device; a screw member that penetrates the guide portion and fixes the wireless communication device to the antenna device, When the screw member is loosened, the screw member is guided by the guide portion, and the wireless communication device rotates relative to the antenna device. 13. A wireless communication unit comprising:

[0070] [Appendix 2] 2. The wireless communication unit according to claim 1, wherein the polarization angle of the wireless communication device is adjusted by rotating the wireless communication device relative to the antenna device.

[0071] [Appendix 3] The wireless communication unit described in Appendix 1 or Appendix 2, characterized in that the attachment member is provided on a rear portion of the antenna body.

[0072] [Appendix 4] the screw member is a bolt, The bolt has a thread formed at its tip, With the neck of the bolt penetrating the guide portion, the tip of the bolt is screwed into a female screw portion formed in the antenna device. 4. A wireless communication unit according to claim 1,

[0073] [Appendix 5] The wireless communication unit according to any one of claims 1 to 4, wherein the guide portion is an arc-shaped hole or an arc-shaped groove.

[0074] [Appendix 6] the mounting member includes an arm portion extending laterally from the antenna device, The mechanism and the structure are provided on the arm. 6. A wireless communication unit according to any one of claims 1 to 5,

[0075] [Appendix 7] 7. The wireless communication unit according to claim 1, wherein the wireless communication device is for wireless communication using polarization multiplexing with vertical polarization and horizontal polarization.

[0076] [Appendix 8] adjusting the azimuth angle and the elevation / depression angle of the antenna body of the antenna device using a mechanism included in a mounting member of the antenna device; a screw member that penetrates an arc-shaped guide portion formed on a wireless communication device disposed on a rear surface of the antenna device, the screw member fixing the wireless communication device to the antenna device being loosened; adjusting a polarization angle of the wireless communication device by guiding the screw member by the guide portion while the screw member is loosened and rotating the wireless communication device relative to the antenna device; After the adjustment of the polarization angle is completed, the screw member is tightened to fix the wireless communication device to the antenna device. The angle adjustment method according to the present invention is characterized in that

[0077] This application claims priority based on Japanese Patent Application No. 2021-044792, filed on March 18, 2021, the disclosure of which is incorporated herein in its entirety. [Explanation of symbols]

[0078] 1 Antenna device 2. Wireless communication devices 3 Volts 4 Bolt-shaped components 5 Nut-shaped member 11 Antenna body 12 Mounting material 13 Arm 14 Retention structure 15 First rotating mechanism 16 Second rotation mechanism 17 Female thread 21 Flange 22 Housing 23 Case cover 24 Arc-shaped hole 25 Female thread 26 Widening section 27 Arc-shaped groove 31 Tip 32 Head 33 Neck 100 Wireless communication unit

Claims

1. An antenna device including an antenna body which is a planar antenna, and an attachment member which is installed on a rear part of the antenna body and fixes the antenna body to an attachment target member; a wireless communication device fixed to the plate-shaped portion of the mounting member; An arc-shaped guide portion formed on the wireless communication device; a screw member that penetrates the guide portion, screws into a female screw portion provided in the plate-like portion, and fastens the guide portion to the female screw portion to fix the wireless communication device to the antenna device, When the screw member is loosened, the screw member is guided by the guide portion, and the wireless communication device rotates in the polarization angle direction of the antenna device.

13. A wireless communication unit comprising:

2. 2. The wireless communication unit according to claim 1, wherein the wireless communication device is rotated relative to the antenna device to adjust a polarization angle of the wireless communication device.

3. the screw member is a bolt, The bolt has a thread formed at its tip, With the neck of the bolt penetrating the guide portion, the tip of the bolt is screwed into the female screw portion.

3. A wireless communication unit according to claim 1 or 2.

4. 4. The wireless communication unit according to claim 1, wherein the guide portion is an arc-shaped hole.

5. the mounting member includes an arm portion extending in a direction substantially parallel to a radiation surface of the antenna body, The attachment target member is fixed to the arm portion.

5. A wireless communication unit according to claim 1, wherein the first and second electrodes are electrically connected to the first and second electrodes.

6. 6. The wireless communication unit according to claim 1, wherein the wireless communication device is for wireless communication by polarization multiplexing using vertically polarized waves and horizontally polarized waves.

7. An antenna device including an antenna body which is a planar antenna, and an attachment member which is installed on a rear part of the antenna body and fixes the antenna body to an attachment target member; a wireless communication device fixed to the plate-shaped portion of the mounting member; An arc-shaped guide portion formed on the wireless communication device; a screw member that penetrates the guide portion, screws into a female screw portion provided in the plate-like portion, and fastens the guide portion to the female screw portion to fix the wireless communication device to the antenna device, adjusting a polarization angle of the wireless communication device by guiding the screw member by the guide portion while the screw member is loosened and rotating the wireless communication device relative to the antenna device; After the adjustment of the polarization angle is completed, the screw member is tightened to fix the wireless communication device to the antenna device. The angle adjustment method according to the present invention is characterized in that

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