JP2007266818A - Antenna unit, and communication unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antenna unit and a communication unit using the antenna unit, enabling directivity control at least in the semi-spherical surface direction and increase of a radio wave propagation distance, with a reduced antenna area. <P>SOLUTION: By rotating a planar antenna element 2 around a parallel axis 8 so as to obtain a variable direction of directivity on a one-fourth circumference from a direction perpendicular to a plane 7 (direction A in FIG. 4) to a direction parallel to the above plane 7 (direction C in FIG. 4), and further, the variable range of one-fourth circumference is rotated 360 degrees around a right-angle direction axis 19. Thus, the direction of directivity concerned can be controlled over the entire directions of the semi-spherical surface on the plane. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an antenna device having directivity and a communication device using the antenna device.

  Conventionally, antennas used in electronic devices, particularly mobile phones and personal digital assistants, are often omnidirectional. However, with the increase in communication capacity and speed, improvement in antenna gain has been demanded.

  For this reason, an antenna array using a plurality of antenna elements has been considered as a method for giving directivity to the antenna and controlling the directivity. However, the antenna itself becomes large because a certain distance between the antenna elements is required. There were problems such as complicating directivity control.

Thus, for example, an antenna device including a plurality of antenna elements and a switch that controls the adjacent elements of the antenna element to be connected / disconnected, and the antenna directivity can be controlled by controlling the switches. It has been proposed (see, for example, Patent Document 1).
Japanese Patent Laying-Open No. 2005-51572 (paragraph [0012], FIG. 1)

  However, in the antenna device described in the above-mentioned patent document, although the antenna element interval is narrowed, there is still a problem that a plurality of antenna elements are necessary and the area is increased and the propagation distance of radio waves is reduced.

  Further, for example, it is difficult to satisfy the antenna directivity direction in a variable manner with all the hemispherical surfaces, and there is a problem that control is not always easy because a large number of switches are used.

  In view of the circumstances as described above, an object of the present invention is to provide an antenna device that can reduce the antenna area, can control the directivity in at least the hemispherical direction, and can further increase the propagation distance of radio waves, and the antenna device. It is to provide a used communication device.

  In order to achieve the above object, an antenna device according to the present invention includes a planar antenna element having directivity, and a holder that holds the planar antenna element so as to be rotatable at least 90 degrees about a parallel axis parallel to the plane. And a base portion for holding the holding portion so that the planar antenna element is not parallel to the plane and is rotatable at least 360 degrees about a right-angle direction axis perpendicular to the parallel axis. It is characterized by doing. Here, “directivity” means a direction in which radiated radio waves and received radio waves are strongest, and “planar antenna element” means, for example, a patch antenna.

  In the present invention, for example, the planar antenna element is rotated so that the directivity direction is varied on a ¼ circumference from a direction perpendicular to the plane to a direction parallel to the original plane. By rotating the circumference of the circle 4 360 degrees around the right-angle direction axis, the directivity direction can be controlled in all directions on the surface of the hemisphere on the plane.

  In addition, since the directivity direction is controlled by rotating the planar antenna element, a plurality of antenna elements are not required unlike the array antenna, and the area of the antenna device can be reduced and the propagation distance of the radio wave is reduced. It becomes possible to prevent this.

  On the other hand, when the rotation direction of the planar antenna element is simply a direction centered on the parallel axis and a direction centered on an axis parallel to the plane and perpendicular to the parallel axis, the conventional MEMS (Micro Electro Mechanical Systems) actuators have a limited maximum rotation range.

  As a result, the directivity direction of the planar antenna element cannot be directed to all of the hemispherical surface, for example, and a plurality of planar antenna elements are required to compensate for the insufficient variable direction, thereby reducing the area of the antenna device. In addition to this, the propagation distance is also reduced.

  On the other hand, the planar antenna element is rotated at a sufficient angle by centering the rotation direction of the planar antenna element on the parallel axis and the perpendicular axis that is not parallel to the plane and is perpendicular to the parallel axis. Can be rotated.

  According to an aspect of the present invention, the planar antenna element has one side that overlaps the parallel axis. Thereby, rotation of a planar antenna can be stabilized more.

  According to one aspect of the present invention, the holding portion includes a movable portion that is fixed at the one end side to the base portion and can be bent so that the other end side is separated from the base portion. The other end side is rotatably held, and the one side is rotated about the parallel axis by being separated from the base portion by the bending of the movable portion. Thereby, for example, the plane of the planar antenna element is initially oriented vertically, but the planar antenna element is also rotated about the parallel axis so that one side is raised as the other end of the holding part rises from the base part. Is possible. Further, the movable part can be curved to completely rotate the plane direction by 90 degrees.

  Here, for example, there is a “Bimorph type polymer actuator” as the movable part, but it is not limited to this, and it is rotated by the Bimorph type of deformation of the member due to heat, deformation due to electrostatic force, piezoelectricity, electrochemical reaction, etc. It may be driven. Also, an actuator that is not a Bimorph method may be used. For example, a unimorph method may be used.

  An antenna device according to another aspect of the present invention is a planar antenna element having directivity, and the planar antenna element can be rotated at least 90 degrees around one direction around a first parallel axis parallel to the plane. A first holding unit for holding, and a second holding unit configured to rotate the planar antenna element at least 90 degrees about the second parallel axis parallel to the first parallel axis and opposite to the one direction. And the planar antenna element is not parallel to the plane and is rotatable at least 180 degrees about a right-angled axis perpendicular to the first and second parallel axes. And a base portion that holds the first and second holding portions.

  In the present invention, since the rotation around one direction centered on the first parallel axis and the opposite direction centered on the second parallel axis are rotated 180 degrees, a plane is formed on the ½ circumference. The directivity direction of the antenna element can be varied. Further, by rotating the ½ circumference which is the variable range by 180 degrees around the right-angle axis, the directivity direction can be controlled in all directions on the surface of the hemisphere on the plane. Therefore, even if the base portion cannot be rotated 360 degrees, the directivity direction can be controlled in all directions on the surface of the hemisphere on the plane if it can be rotated at least 180 degrees.

  According to an aspect of the present invention, the planar antenna element has one side that overlaps the first parallel axis and another side that is spaced apart from the one side and overlaps the second parallel axis. And Thus, for example, when the directivity direction of the first planar antenna element is set to be perpendicular to the base portion, the rotation is performed about the first parallel axis and the second parallel axis. The directivity direction can be easily rotated around one direction and the opposite direction.

  According to an aspect of the present invention, the first holding portion includes a first movable portion that is fixed at the one end side to the base portion and is bendable so that the other end side is separated from the base portion. The second holding portion has a second movable portion whose one end side is fixed to the base portion and the other end side can be bent so as to be separated from the base portion, and the planar antenna element is arranged at each other end side. The one side is separated from the base part by the bending of the first movable part, and rotates about the second parallel axis, and the second movable part is curved. The other side is rotated about the first parallel axis by separating from the base portion. Thereby, for example, the plane of the planar antenna element is initially vertical, but as the other end side of the first holding part rises from the base part, the planar antenna element also rotates about the second parallel axis and the one side becomes As a result, the direction of the plane can be varied around one direction and the other. Further, the first movable part can be curved to completely rotate the plane direction to, for example, 90 degrees on the left side. Further, when the other end side of the second holding part rises from the base part, the planar antenna element is rotated about the first parallel axis and the other side is caused to change the direction of the plane around one direction. Is possible. Similarly, the second movable part can be further curved to completely rotate the plane direction to, for example, 90 degrees on the right side.

  According to an aspect of the present invention, the planar antenna element has a substantially quadrangular shape, and the two opposite sides of the one side and the other side are disposed between the first and second holding portions. It is characterized by being. Accordingly, the entire plane of the substantially rectangular planar antenna element can be reliably rotated 90 degrees around the first and second parallel axes, and the directivity direction of the planar antenna element can be varied on the ½ circumference. It becomes possible.

  According to an aspect of the present invention, the base unit may further include a base movable unit that can rotate the base unit 360 degrees. Here, the “base movable portion” refers to all of those that rotate the base portion by, for example, heat, magnetic force, electrostatic force, electromagnetic force, or piezoelectricity. Specifically, there is a micromotor or the like. Thereby, the planar antenna element can be easily rotated around the perpendicular direction axis.

  An antenna device according to another aspect of the present invention is a planar antenna element having directivity, and the planar antenna element is rotatable about a first parallel direction about a first parallel axis parallel to the plane. A first holding section for holding, and a second holding the planar antenna element so as to be rotatable about the second parallel axis parallel to the first parallel axis and in the direction opposite to the first one direction. And the planar antenna element can be rotated about a third parallel axis about a third parallel axis parallel to the plane and perpendicular to the first and second parallel axes. And a third holding part for holding the first and second holding parts, and the planar antenna element about the fourth parallel axis parallel to the third parallel axis. And a fourth holding member holding the first and second holding portions so as to be rotatable in the opposite direction. And a base portion that holds the third and fourth holding portions so that the planar antenna element can be rotated around at least one of the first, second, third, and fourth parallel axes. It is characterized by comprising.

  In the present invention, not only the first to fourth holding portions but also the base portion is held so as to be rotatable about the first to fourth parallel axes, so that the first to fourth holding portions are movable. The antenna element can be rotated at an angle of less than 90 degrees, for example, an angle of up to 45 degrees. By moving the base part holding the third holding part and the fourth holding part, the insufficient 45 degrees can be rotated by 90 degrees as a whole.

  According to an aspect of the present invention, the apparatus further includes a base that holds the base part, and a base movable part that can change the height from the base at each of the base parts at least at three places. It is characterized by that. This makes it possible to control the base movable parts at three locations and to direct the inclination of the base part holding the third holding part and the fourth holding part in the direction of 360 degrees around the planar antenna element. The planar antenna element can be rotated about at least one of the first to fourth parallel axes in the direction of degrees.

  Therefore, for example, the base portion is not parallel to the plane of the planar antenna element and does not have to be rotated at least 360 degrees about the right-angle direction perpendicular to the first and second parallel axis directions. The directivity direction of the planar antenna element can be directed to the entire surface.

  Further, for example, when the rotation about the first and third parallel axes at the first and third holding portions is θ and φ, respectively, the rotation of the planar antenna element itself is the respective θ and φ. Thus, the amount of rotation of the base portion by the base movable portion can be added, and the rotation angle of the entire antenna device can be increased. As a result, it has become possible to turn the antenna device that has not been able to make a large rotation angle and direct the directivity direction of the antenna device to the entire surface of the hemispherical surface.

  A communication device according to another aspect of the present invention includes a planar antenna element having directivity, a holding unit that holds the planar antenna element so as to be rotatable at least 90 degrees about a parallel axis parallel to the plane, The planar antenna element is electrically connected to the base element and the antenna element so as to be rotatable at least 360 degrees about a perpendicular axis that is not parallel to the plane and perpendicular to the parallel axis. And a substrate having a wiring connected to the substrate.

  In the present invention, for example, the planar antenna element is rotated so that the directivity direction is varied on a ¼ circumference from a direction perpendicular to the plane to a direction parallel to the original plane. An antenna device capable of rotating 360 degrees around the circumference of a circle around 360 degrees is provided on the substrate. Therefore, the directivity direction can be controlled in all directions on the surface of the hemisphere, so that the communication device can reduce the area of the antenna device and prevent the propagation distance of radio waves from decreasing.

  As described above, according to the present invention, the antenna area can be reduced, the directivity in at least the hemispherical direction can be controlled, and the propagation distance of radio waves can be prevented from decreasing.

  Embodiments of the present invention will be described below with reference to the drawings and an antenna device and a communication device including the antenna device. A planar antenna element will be described as an antenna provided in the antenna device. However, the present invention is not limited to this and may be a three-dimensional antenna.

  FIG. 1 is a perspective view of an antenna device according to a first embodiment of the present invention, FIG. 2 is a plan view of the antenna device, and FIG. 3 is a cross-sectional view of a polymer actuator element.

  As shown in FIG. 1, the antenna device 1 includes a planar antenna element 2 having directivity, a holding portion 3 that holds the planar antenna element 2 so as to be rotatable, and a base portion 4 that holds the holding portion 3. Further, the antenna device 1 has a base movable portion 5 that moves the base portion 4.

  Here, the planar antenna element 2 is, for example, a substantially rectangular patch antenna as shown in FIG. 1, and has a plane 7 that is a transmission / reception surface of the radio wave signal, and a direction orthogonal to the plane 7 (A in FIG. 1). Directivity in the direction of the arrow.

  Further, for example, as shown in FIG. 2, the planar antenna element 2 is formed so that one side 2a of the square overlaps a parallel axis 8 parallel to the plane 7, and the direction of the parallel axis 8 (in the vicinity of both ends of the side 2a ( The projection 9 protrudes in the X-axis direction in FIG.

  As shown in FIGS. 1 and 2, for example, the holding unit 3 includes substantially plate-shaped holding units 3 a and 3 b facing each other so as to sandwich the planar antenna element 2 therebetween, and is arranged on the upper surface of the base unit 4. .

  Each of the holding portions 3a and 3b has one end side 10 and the other end side 11. The one end side is bonded and fixed to the upper surface of the base portion 4, for example, and the other end side 11 has movable portions 12a and 12b, respectively.

  On the other end side 11, for example, as shown in FIG. 2, a recess 13 is provided so that the protrusion 9 can rotate, and a part of the protrusion 9 is inserted therein. In FIG. 2, the protrusions are drawn short, but it is needless to say that the present invention is not limited to this.

  The movable portions 12a and 12b can be curved so that the other end side 11 is separated from the upper surface while the one end side 10 is fixed to the upper surface of the base portion 4, for example, and is composed of, for example, a Bimorph type polymer actuator element 14 May be. Further, it may be bent by a Bimorph method of deformation of a member due to heat, deformation due to electrostatic force, piezoelectricity, electrochemical reaction, or the like. It is also possible to use actuators that are not bimorph.

  Here, for example, as shown in FIG. 3, the polymer actuator element 14 includes an ion conductive polymer film (ion conductive polymer film) 15 impregnated with a cationic substance, and both surfaces of the ion conductive polymer film 15. Electrode films 16a and 16b are provided respectively. In addition, a wiring (not shown) electrically connected to each of the electrode films 16a and 16b is provided, and the ion conductive polymer film 15 is formed by applying a voltage between the electrode films 16a and 16b through the wiring. Bend or deform.

  Accordingly, when the movable portion 12a is curved and the one side (2a) side of the planar antenna element 2 is separated from the upper surface of the base portion 4, the protrusion 9 is at least 90 on the parallel axis, for example, based on the upper surface of the base portion 4. It will be possible to rotate.

  The base portion 4 has a flat plate shape as shown in FIGS. 1 and 2, for example, and one end side 10 of the holding portions 3a and 3b is fixed to the upper surface 17 thereof.

  Moreover, the base movable part 5 is provided with a micromotor (not shown) on the back side (the side opposite to the holding part 3) of the base part 4, for example, and the rotation shaft of the micromotor is connected to the base part 4. As a result, the base 4 is not parallel to the plane 7 of the planar antenna element 2 due to the rotation of the rotation axis, and is centered on the perpendicular axis 19 in the direction perpendicular to the parallel axis 8 (Z-axis direction in FIG. 1). Can be rotated 360 degrees, and the holding portions 3a and 3b can be similarly rotated.

  As a result, the planar antenna element 2 held by the holding portions 3a and 3b is not parallel to the plane 7 and is centered on the perpendicular axis 19 in the direction perpendicular to the parallel axis 8 (Z-axis direction in FIG. 1). Will be rotated 360 degrees.

  Of course, the base movable portion 5 is not limited to a micromotor, and can be driven by being deformed by heat, or rotated by a magnetic force, an electrostatic force, an electromagnetic force, a piezoelectric force, or the like.

  In the above description, the holding portions 3a and 3b are provided on both sides of the planar antenna element 2 as the holding portion 3, but it is needless to say that only one of them may be provided. Thereby, the number of parts can be reduced. However, the planar antenna element 2 can be rotated about the parallel axis 8 more stably when provided on both sides as described above.

  The operation of the antenna device 1 configured as described above will be described focusing on the rotation of the planar antenna element. FIG. 4 is a diagram illustrating the operation of the planar antenna element, and FIG. 5 is an explanatory diagram when the movable portion is curved.

  First, for example, as shown in FIG. 4, it is assumed that the directivity direction A of the planar antenna element 2 faces the Z-axis direction in FIG.

  Here, when a voltage is applied between the electrode films 16a and 16b of the polymer actuator element 14 of the movable parts 12a and 12b by the antenna drive control circuit for controlling the movable parts 12a and 12b and the base movable part 5, the polymer actuator element itself. Expands on one side and contracts on the other. Thereby, the movable portions 12 a and 12 b are curved upward, for example, and the other end side 11 is separated from the upper surface of the base portion 4. Along with this, the one side 2a of the planar antenna element 2 is also separated from the upper surface of the base portion 4 so as to be caused on the other end sides 11 of the holding portions 3a and 3b.

  On the other hand, the other side 2b facing the one side 2a of the planar antenna element 2 is on the upper surface of the base portion 4 even if the one side 2a is raised, so that the plane of the planar antenna element 2 is eventually inclined and the one side 2a It will rotate around the parallel axis 8 that overlaps. Needless to say, for more stable rotation, the other side 2b may be fixed so as to be rotatable.

  Further, when a voltage is applied to the polymer actuator element 14, for example, as shown in FIG. 5, the movable portions 12a and 12b are further curved, and the one side 2a rises up to the top of the other side 2b. At this time, the planar antenna element 2 rotates counterclockwise about the parallel axis 8.

  As a result, the planar antenna element 2 continuously changes its direction from the state of being directed upward (Z-axis direction in FIG. 4) to the left lateral direction (Y-axis direction in FIG. 4). That is, it is possible to continuously change the directivity direction from the directivity direction A to the directivity direction C that is parallel to the Y-axis direction of FIGS. 4 and 5, and to change the directivity direction on a quarter circle. It becomes.

  When a current is supplied to, for example, a micro motor of the base movable unit 5 by the antenna drive control circuit, the micro motor rotates to rotate the base unit 4. As a result, in the planar antenna element 2, for example, as shown in FIG. 4, when the rotation axis of the micromotor rotates 360 degrees, the variable range of the ¼ circumference further rotates 360 degrees around the right-angled axis 19. As a result, the variable range of the directivity direction of the planar antenna element 2 is all directions on the hemisphere.

  Thus, according to the present embodiment, the planar antenna element 2 is rotated about the parallel axis 8 so that the directivity direction is parallel to the plane 7 from the direction perpendicular to the plane 7 (direction A in FIG. 4). While changing to a ¼ circumference up to the direction (C direction in FIG. 4), the ¼ circumference, which is the variable range, is rotated 360 degrees around the right-angled axis 19. Therefore, the directivity direction can be controlled in all directions on the surface of the hemisphere on the plane.

  In addition, since the directivity direction is controlled by rotating the planar antenna element 2, a plurality of antenna elements are not required unlike the array antenna, and the area of the antenna device 1 can be reduced and the propagation distance of the radio wave Can be prevented from falling.

  In addition, since the planar antenna element 2 has one side 2a that overlaps the parallel axis 8, the planar antenna element 2 can be more stably rotated.

  Furthermore, the holding portions 3a and 3b have movable portions 12a and 12b which are bent at one end side 10 to the base portion 4 and can be bent so that the other end side 11 is separated from the base portion 4. The end side 11 is rotatably held. Further, the one side 2a is separated from the base portion 4 due to the bending of the movable portions 12a and 12b, thereby rotating around the parallel axis 8. Therefore, initially, for example, the plane 7 of the planar antenna element 2 is vertically oriented, but as the other end side 11 of the holding portions 3a and 3b rises from the base portion 4, the planar antenna element 2 is also caused to have one side 2a. It can be rotated about the parallel axis 8. Further, the movable portion can be curved to completely rotate the plane 7 by 90 degrees as shown in FIG.

  FIG. 6 is a perspective view of an antenna device according to the second embodiment of the present invention, and FIG. 7 is a plan view of a planar antenna element. In the following description of the invention, the same components and functions of the antenna device according to the above-described embodiment will be described with a focus on different points, with the description being simplified or omitted.

  As shown in FIG. 6, the antenna device 101 includes a planar antenna element 2 having directivity, a holding portion 103 that rotatably holds the planar antenna element 2, and a base portion 4 that holds the holding portion 103. Further, the antenna device 1 has a base movable portion 5 that moves the base portion 4.

  Here, for example, as shown in FIG. 7, the planar antenna element 2 has a first parallel axis 108a and a second parallel axis 108b that are parallel to the plane 7 and spaced apart from each other, and one side of a square is formed on the first parallel axis 108a. 2a overlaps, and the other side 2b opposite to the one side 2a overlaps the second parallel axis 108b. Further, the planar antenna element 2 has a protruding portion 9 protruding in the direction of the first parallel axis 108a (X-axis direction in FIG. 2) near the other end side of the first holding portion, which will be described later, on one side 2a. is doing. Similarly, the planar antenna element 2 has a protruding portion 9 protruding in the direction of the second parallel axis 108b (X-axis direction in FIG. 2) in the vicinity of the other end side of the second holding portion described later on the other side 2b. is doing.

  For example, as shown in FIG. 7, the holding portion 103 is opposed to each other so as to sandwich the planar antenna element 2 therebetween, and first and second substantially plate-shaped first and second ends, which will be described later, are positioned on opposite sides, respectively. The holding portions 103 a and 103 b are arranged on the upper surface of the base portion 4.

  The first and second holding portions 103 a and 103 b each have one end side 10 and the other end side 11, and the one end side 10 is bonded and fixed to the upper surface of the base portion 4, for example. On the other end side 11, the first holding part 103 a has a first movable part 112 a and the second holding part 103 b has a second movable part 112 b. Here, since the configuration of the first and second movable parts 112a and 112b is the same as that of the movable parts 12a and 12b of the first embodiment, the description thereof is omitted.

  For example, as shown in FIG. 7, a recess 13 is provided on the other end 11 so that the protrusion 9 can rotate, and a part of the protrusion 9 is fitted therein.

  Moreover, the base movable part 5 is provided with a micromotor (not shown) on the back side (the side opposite to the holding part 103) of the base part 4, for example, and the rotation shaft of the micromotor is connected to the base part 4. Thereby, the base 4 is not parallel to the plane 7 of the planar antenna element 2 by the rotation of the rotation shaft, and is in a direction perpendicular to the first and second parallel shafts 108a and 108b (Z-axis direction in FIG. 1). ) 360 degrees around the perpendicular axis 119, and the first and second holding portions 103a and 103b can be similarly rotated. Here, the perpendicular axis 119 is positioned between the first and second parallel axes 108a and 108b, for example, as shown in FIG.

  As a result, the planar antenna element 2 held by the first and second holding portions 103a and 103b is not parallel to the plane 7 and is perpendicular to the first and second parallel axes 108a and 108b (see FIG. 1 is rotated 360 degrees around a perpendicular axis 119 (Z-axis direction in 1).

  The operation of the antenna device 101 configured as described above will be described focusing on the rotation of the planar antenna element. FIG. 8 is a diagram illustrating the operation of the planar antenna element, FIG. 9 is an explanatory diagram when the first movable portion is curved, and FIG. 10 is an explanatory diagram when the second movable portion is curved.

  First, for example, as shown in FIG. 8, it is assumed that the directivity direction A of the planar antenna element 2 faces the Z-axis direction in FIG.

  Here, for example, when a voltage is applied between the electrode films 16a and 16b of the first movable portion 112a by the antenna drive control circuit that controls the first and second movable portions 112a and 112b, the polymer actuator element 14 itself is one side. Expansion and contraction on the other side. As a result, the first movable portion 112 a is bent upward, for example, and the other end 11 is separated from the upper surface of the base portion 4. Accordingly, one side 2a of the planar antenna element 2 is also separated from the upper surface of the base portion 4 so as to be caused on the other end side 11 of the first holding portion 103a.

  On the other hand, the second movable portion 112b is not bent because no voltage is applied between the electrode films 16a and 16b by the antenna drive control circuit, and the other end 11 of the second holding portion 103b is separated from the upper surface of the base portion 4. There is no. As a result, the other side 2b of the planar antenna element 2 remains in contact with the upper surface of the base portion 4 without being caused. As a result, the plane of the planar antenna element 2 is inclined, and the second parallel axis that overlaps the other side 2b. It will rotate around 108b.

  Further, when a voltage is applied to the polymer actuator element 14, for example, as shown in FIG. 9, the first movable portion 112a is further curved, and the one side 2a rises to the position directly above the other side 2b. At this time, the planar antenna element 2 rotates about the second parallel axis 108b in the counterclockwise direction as the one direction and the opposite direction.

  As a result, the planar antenna element 2 continuously changes its direction from the state of being directed upward (Z-axis direction in FIG. 8) to the left lateral direction (Y-axis direction in FIG. 8). That is, it is possible to continuously change the directivity direction from the directivity direction A to the directivity direction C parallel to the Y-axis direction of FIGS. 8 and 9, and to change the directivity direction on a quarter circle. It becomes.

  Further, this time, when a voltage is applied between the electrode films 16a and 16b of the second movable portion 112b by the antenna drive control circuit, the second movable portion 112b is bent upward, for example, and the other end side 11 is at the base portion 4. Move away from the top surface of. Accordingly, the other side 2b of the planar antenna element 2 is also separated from the upper surface of the base portion 4 so as to be caused on the other end side 11 of the second holding portion 103b.

  On the other hand, the first movable portion 112a is not bent because no voltage is applied between the electrode films 16a and 16b by the antenna drive control circuit, and the other end side 11 of the first holding portion 103a is separated from the upper surface of the base portion 4. There is nothing. As a result, one side 2a of the planar antenna element 2 remains in contact with the upper surface of the base portion 4 without being caused. As a result, the plane 7 of the planar antenna element 2 is inclined and overlaps the one side 2a. Will rotate around the center.

  Further, when a voltage is applied to the polymer actuator element 14, for example, as shown in FIG. 10, the second movable portion 112b is further curved, and the other side 2b rises to a position directly above the one side 2a. That is, the planar antenna element 2 rotates clockwise about one direction around the first parallel axis 108a.

  As a result, the planar antenna element 2 continuously changes its direction from the state of being directed upward (Z-axis direction in FIG. 8) to the right side direction (Y-axis direction in FIG. 8). That is, the direction can be continuously changed from the directivity direction A to the directivity direction C ′ parallel to the Y-axis direction in FIGS. 8 and 9, and the directivity direction can be changed on the ¼ circumference. It becomes possible.

  Therefore, it is possible to change the directivity direction on the ½ circumference by curving the first and second movable parts 112a and 112b separately.

  When a voltage is applied to, for example, a micro motor of the base movable unit 5 by the antenna drive control circuit, the micro motor rotates to rotate the base unit 4. As a result, when the rotation axis of the micromotor rotates 180 degrees, the planar antenna element 2 further rotates the variable range of the 1/2 circumference 180 degrees about the right angle axis 119, resulting in the planar antenna element. The variable range of the two directivity directions is all directions on the hemisphere.

  Thereby, even if the base part 4 cannot be rotated 360 degrees, the directivity direction of the planar antenna element 2 can be controlled in all directions on the surface of the hemisphere on the plane if it can be rotated at least 180 degrees.

  That is, for example, two Bimorph polymer actuator elements can change 90 degrees counterclockwise and clockwise about the first and second parallel axes 108a and 108b, and can change 180 degrees in total. Therefore, in this case, the base movable part 5 only needs to operate 180 degrees.

  As described above, according to the present embodiment, if one direction around the first parallel axis 108a and the opposite direction around the second parallel axis 108b are rotated 180 degrees together, 1 / The directivity direction of the planar antenna element 2 can be varied on two circumferences. On the other hand, the directivity direction can be controlled in all directions on the surface of the hemisphere on the plane by rotating the ½ circle which is the variable range by 180 degrees about the right-angled axis 119. Therefore, even if the base part 4 cannot be rotated 360 degrees, the directivity direction can be controlled in all directions on the surface of the hemisphere on the plane if it can be rotated at least 180 degrees.

  Further, the planar antenna element 2 has one side 2a that overlaps the first parallel axis 108a and another side 2b that is spaced apart from the one side 2a and that overlaps the second parallel axis 108b. Therefore, for example, when the directivity direction of the first planar antenna element 2 is set to be perpendicular to the base portion 4 (direction A in FIG. 8), the first parallel axis 108a and the second parallel axis are rotated. In the case of rotating around 108b, the directivity direction can be easily rotated in the direction opposite to the one direction.

  Further, the first holding portion 103a has a first movable portion 112a that has one end side 10 fixed to the base portion 4 and can be bent so that the other end side 11 is separated from the base portion, and the second holding portion 103b. Includes a second movable portion 112b that is bent at one end side 10 to the base portion 4 and bent at the other end side 11 away from the base portion 4. Further, the planar antenna element 2 is rotatably held at each other end side 11, and the side 2 a is separated from the base portion 4 due to the bending of the first movable portion 112 a, so that the second parallel shaft 108 b is centered. It was decided to rotate as.

  Therefore, initially, for example, the plane 7 of the planar antenna element 2 is vertically oriented (direction A in FIG. 8), but as the other end 11 of the first holding portion 103 a rises from the base portion 4, the planar antenna element 2. Is also rotated about the second parallel axis 108b to cause one side 2a. Thereby, the direction of the plane 7 can be varied in the opposite direction to the one direction (for example, counterclockwise). Further, the first movable portion 112a can be curved so that the orientation of the plane is completely rotated, for example, 90 degrees to the left.

  Further, when the other end side 11 of the second holding portion 103b rises from the base portion 4, the planar antenna element 2 rotates around the first parallel axis 108a to cause the other side 2b, and the plane 7 It becomes possible to change the direction around one direction. Similarly, the second movable portion 112b can be further curved to completely rotate the plane 7 in the direction of 90 degrees on the right side, for example.

  Furthermore, the planar antenna element 2 has a substantially square shape, and the other two opposite sides of the one side 2a and the other side 2b are arranged between the first and second holding portions 103a and 103b. Accordingly, the entire plane of the substantially rectangular planar antenna element 2 can be reliably rotated 90 degrees around the first and second parallel axes 108a and 108b, and the directivity of the planar antenna element 2 on the ½ circumference is obtained. The direction can be varied.

  Further, since the base movable portion 5 capable of rotating the base portion 4 by 360 degrees is provided, the planar antenna element 2 can be easily rotated around the right-angle direction axis 119.

  FIG. 11 is a perspective view of an antenna device according to a third embodiment of the present invention, and FIG. 12 is a plan view of the antenna device.

  As shown in FIG. 11, the antenna device 201 holds the planar antenna element 2, the first and second holding portions 203a and 203b that hold the planar antenna element 2, and the first and second holding portions 203a and 203b. It has the 3rd and 4th holding | maintenance part 203c, 203d. The antenna device 201 includes a base portion 204 that holds the third and fourth holding portions 203c and 203d, a base that holds the base portion, and a base movable portion that can change the height of each portion of the base portion. 205.

  Here, the planar antenna element 2 has, for example, a first parallel axis 208a and a second parallel axis 208b that are spaced apart from each other on the plane 7 as shown in FIG. 12, and one side 2a of a substantially quadrangle on the first parallel axis 208a. Are formed such that the other side 2b opposite to the one side 2a overlaps the second parallel axis 208b. Further, the planar antenna element 2 has a protruding portion 9 protruding in the direction of the first parallel axis 208a (X-axis direction in FIG. 12) near the other end side of the first holding portion 203a on one side 2a to be described later. Have.

  Similarly, the planar antenna element 2 has a protruding portion 9 protruding in the direction of the second parallel axis 208b (X-axis direction in FIG. 12) near the other end side of the second holding portion 203b on the other side 2b to be described later. Have.

  As shown in FIGS. 11 and 12, the first and second holding portions 203a and 203b are opposed to each other so that the planar antenna element 2 is sandwiched therebetween, and one end and the other end, which will be described later, are positioned on the opposite sides, respectively. It consists of substantially plate-shaped 203a, 203b.

  The first and second holding portions 203a and 203b have one end side 10 and the other end side 11 as shown in FIGS. 11 and 12, for example, and each one end side 10 is formed on the inner wall of the frame body 220. The other end 11 has a first movable portion 112a and a second movable portion 112b. Therefore, the first and second holding portions 203 a and 203 b are held by the frame body 220.

  On the other end side 11, for example, as shown in FIG. 12, a recess 13 is provided so that the protrusion 9 can rotate, and a part of the protrusion 9 is inserted therein. Therefore, the planar antenna element 2 is held between the first and second holding portions 203a and 203b so as to be rotatable about the first and second parallel axes 208a and 208b.

  Here, for example, as shown in FIGS. 11 and 12, the frame body 220 has a third parallel axis 208c that overlaps the side 220c on the first holding portion 203a side among the four outer sides, and the side 220c It has a fourth parallel axis 208d that overlaps the opposite side 220d.

  Further, as shown in FIGS. 11 and 12, for example, the frame body 220 has a third parallel axis direction (Y-axis direction in FIG. 12) at a corner near the one end side 10 of the first holding portion 203a. It has the protrusion part 9 which protrudes. Similarly, a protrusion 9 protruding in the fourth parallel axis direction (Y-axis direction in FIG. 12) is provided at a corner near the one end side 10 of the second holding portion 203b.

  Next, the third and fourth holding portions 203c and 203d have, for example, one end side 10 and the other end side 11, respectively, as shown in FIGS. 11 and 12, and each one end side 10 has a substantially frame-shaped base portion. The other end side 11 is fixed to the inner wall of 204 and has third and fourth movable parts 212c and 212d, respectively. Therefore, the third and fourth holding portions 203c and 203d are held by the base portion 204.

  As shown in FIG. 12, for example, the third and fourth holding portions 203c and 203d are provided with a recess 13 so that the protrusion 9 can rotate, as shown in FIG. Some are inserted. Accordingly, the frame body 220 is held between the third and fourth holding portions 203c and 203d so as to be rotatable about the third and fourth parallel axes 208c and 208d.

  Thereby, since the first and second holding portions 203a and 203b are fixed to the frame body 220, the third and fourth holding portions 203c and 203d replace the first and second holding portions 203a and 203b, respectively. The third and fourth parallel shafts 208c and 208d are held so as to be rotatable.

  Further, since the first and second holding portions 203a and 203b hold the planar antenna element 2, the third and fourth holding portions 203c and 203d eventually hold the planar antenna element 2 with the third and fourth parallel axes. 208c and 208d are held so as to be rotatable.

  The base part 204 has a substantially frame shape as shown in FIG. 11, for example, and the third and fourth holding parts 203c and 203d are made to be the first, second, third and fourth by a base movable part 205 described later. It is rotatably held around at least one of the parallel shafts 208a, 208b, 208c, 208d.

  Here, the third and fourth holding portions 203c and 203d hold the first and second holding portions 203a and 203b via the frame body 220, and further the first and second holding portions 203a, 203b, Reference numeral 203 b holds the planar antenna element 2. Accordingly, the base portion 204 holds the planar antenna element 2 so as to be rotatable around at least one of the first, second, third, and fourth parallel axes 208a, 208b, 208c, and 208d. .

  Here, the third and fourth movable parts 212c and 212d are, for example, the same as the first and second movable parts 112a and 112b, and the frame 220 is centered on the third and fourth parallel axes 208c and 208d. It can be rotated. Further, the movable method may be, for example, the Bimorph type polymer actuator element 14 in the same manner as the first and second movable portions 112a and 112b. Further, the movable method is not limited to this, and deformation of a member due to heat, magnetic force, electromagnetic force, piezoelectric, or the like may be used.

  For example, as shown in FIGS. 11 and 12, three base movable parts 205 are provided on the lower surface 221 of the base part 204 (205 a, 205 b, 205 c), and the three base movable parts 205 are parallel to the plane 7. The base portion 204 can be held. The base portion 204 is disposed on the base movable portion 205. Of course, four base movable parts 205 may be provided so as to be arranged at each corner of the base part 204, or more base movable parts 205 may be provided to rotate the base movable part 205 more finely. You may enable it to control.

  Further, the three base movable parts 205 can individually change the height from the upper surface 223 of the base 222 at the corresponding part of the base part 204, and thereby the inclination of the base part 204 can be freely changed. Become.

  Here, the base 222 has a substantially rectangular shape as shown in FIG. 11, for example, and three base movable parts 205a, 205b, and 205c are arranged on the upper surface 223, and the third and fourth holding parts 203c are arranged thereon. , 203d is placed.

  Furthermore, the base movable unit 205 can use heat, magnetic force, electrostatic force, electromagnetic force or piezoelectric as its movable method. In the case of using piezoelectric, for example, lead zirconate titanate (PZT) based piezoelectric body and electrode Several tens or more layers can be alternately stacked and the expansion and contraction in the stacking direction can be used.

  The operation of the antenna device 201 configured as described above will be described focusing on the rotation of the planar antenna element. FIG. 13 is a diagram for explaining the rotation of the planar antenna element about the second parallel axis, and FIG. 14 is a diagram for explaining the rotation of the planar antenna element about the third parallel axis.

  First, for example, as shown in FIG. 11, it is assumed that the directivity direction A of the planar antenna element 2 faces the Z-axis direction in FIG.

  Here, for example, the first, second, third and fourth movable parts 112a, 112b, 212c, 212d and the base movable part 205 are controlled by the antenna drive control circuit to the piezoelectric bodies of the base movable parts 205a, 205b, 205c. For example, as shown in FIG. 13, a predetermined voltage is applied so that each location of the corresponding base part 204 is inclined and arranged on one plane. As a result, for example, as shown in FIG. 13, the planar antenna element 2 rotates by θ1 about the second parallel axis 208b from the state of being directed upward (Z-axis direction in FIG. 12), and its directivity The direction also changes to an arrow B in FIG.

  Next, for example, when a voltage is applied to the polymer actuator element 14 of the first movable portion 112 a by the antenna drive control circuit, the polymer actuator element 14 is bent so that the other end 11 leaves the base portion 204. As a result, the planar antenna element 2 rotates leftward as shown in FIG. 13 (Y-axis direction in FIG. 10) about the second parallel axis 208b further counterclockwise by θ2, The directivity direction also changes to an arrow C in FIG.

  Therefore, for example, by the movement of the first movable portion 112a and the driving of the base movable portion 205, the planar antenna element 2 has its directivity direction upward (Z-axis direction) on the ZY-axis plane from the left side (Y-axis direction). (Orientation) state. As described above, for example, by using the first movable portion 112a and the base movable portion 205, it is possible to obtain a larger rotation angle around the second parallel shaft 208b.

  Further, as shown in FIG. 14, for example, the base portion 204 is made to have the same height from the base 222 of the corresponding portion of the base portion 204 by the left and right base movable portions 205b and 205c. Further, by making the height from the base 222 by the base movable portion 205a at the back of the center higher than the two heights in front, the base movable portion 205a can be inclined to the paper surface observation side in FIG. For example, the inclination is assumed to be rotated forward by an angle φ1 from the plane 7 of the original planar antenna element 2 to the center of the third parallel axis 208c.

  Next, for example, when a voltage is applied to the polymer actuator element 14 of the fourth movable portion 212 d by the antenna drive control circuit, the polymer actuator element 14 is bent so that the other end 11 leaves the base portion 204. As a result, as shown in FIG. 14, the planar antenna element 2 is further rotated by φ2 counterclockwise around the third parallel axis 208c in the direction of the paper surface observation (X-axis direction in FIG. 14), The directivity direction also changes in a direction perpendicular to the paper surface of FIG.

  Accordingly, the plane antenna element 2 moves from the state in which the directivity direction is upward on the ZX axis plane (toward the Z axis direction) by the movement of the base movable parts 205a, 205b, and 205c and the fourth movable part 212d. It will rotate to the direction (X-axis direction direction) state. As described above, for example, by using the fourth movable portion 212d and the base movable portion 205, it is possible to obtain a larger rotation angle around the third parallel axis 208c.

  Further, for example, by controlling the driving of the base movable parts 205a, 205b, and 205c in association with each other, the inclination of the base part 204 with respect to the upper surface 223 of the base 222 is not limited to the ZY axis plane or the ZX axis plane, but 360 degrees. Can be tilted in the direction.

  For example, in the state of FIG. 13, when the height at the center back is increased by the base movable portion 205a and the height of the right side is slightly decreased by the base movable portion 205c, the base portion 204 changes its inclination direction in the XY axis plane of FIG. Will turn it a little to the right. In that case, for example, by driving not only the first movable portion 112a but also the fourth movable portion 212d, the base movable portion 205 can rotate even on a predetermined plane between the ZY axis plane and the ZX axis plane. The angle can be added, and a larger rotation angle of the planar antenna element 2 can be secured.

  Accordingly, the planar antenna element 2 changes its directivity direction to the hemispherical surface by driving the base movable portions 205a, 205b, and 205c and moving the first, second, third, and fourth movable portions 112a, 112b, 212c, and 212d. It can be directed to the front of the.

  As described above, according to the present embodiment, not only the first to fourth holding portions 203a, 203b, 203c, and 203d but also the base portion 204 rotates about the first to fourth parallel axes 208a, 208b, 208c, and 208d. Holds movable. Therefore, the planar antenna element can be rotated by moving the first to fourth holding portions 203a, 203b, 203c, and 203d at an angle of less than 90 degrees, for example, an angle of up to 45 degrees. The base 45 can be rotated 90 degrees as a whole by moving the base part 204 by the base movable part 205 at 45 degrees which is not sufficient.

  Further, the base 222 is further provided with a base 222 and a base movable part 205 capable of changing the height from the base 222 at each of the base portions 204 at at least three locations. Accordingly, it is possible to control the base movable portions 205a, 205b, and 205c at three locations to direct the inclination of the base portion 204 in the direction of 360 degrees around the planar antenna element 2, and from the first to the first in the direction of 360 degrees. The planar antenna element 2 can be rotated about at least one of the parallel axes 4.

  For example, the base portion 204 is not parallel to the plane 7 of the planar antenna element 2 and does not have to be rotated at least 360 degrees around the right-angle direction perpendicular to the first and second parallel axis directions. It is possible to direct the directivity direction of the planar antenna element 2 over the entire surface.

  Further, for example, even when the rotation of the first holding portion 203a around the second parallel axis 208b is θ, the rotation of the planar antenna element itself is rotated by the rotation of the base portion 204 by the base movable portion 205. The moving parts can be added, and the rotation angle of the entire antenna device can be increased. As a result, it has become possible to turn the antenna device that has not been able to make a large rotation angle and direct the directivity direction of the antenna device to the entire surface of the hemispherical surface.

  FIG. 15 is a perspective view of a communication apparatus according to the fourth embodiment of the present invention. However, the antenna device and a part of the wiring in the communication device are shown, and other circuits are omitted.

  The communication device 300 includes an antenna device 1 and a substrate 351 as shown in FIG. The substrate 351 includes an antenna drive control circuit 352 that controls the movable portions 12a and 12b of the antenna device 1, a transmission / reception changeover switch (not shown) that is electrically connected to the planar antenna element 2 of the antenna device 1, and the transmission / reception changeover switch. LNA (Low Noise Amplifier) not shown which is electrically connected to the signal line, and a signal line 353 as a wiring for electrically connecting them.

  The substrate 351 is, for example, a substantially rectangular low dielectric constant glass substrate, and quartz, Pyrex (registered trademark), a liquid crystal substrate, or the like is used.

  The antenna drive control circuit 352 can supply a predetermined signal current to the movable part 12 and the base movable part 5 at a predetermined time so that the planar antenna element 2 is directed in a predetermined direction of the hemisphere. .

  For example, the strength of the radio wave signal received by the planar antenna element 2 is detected by a receiving circuit (not shown) or the like, and the information is supplied to the antenna drive control circuit 352. The antenna drive control circuit 352 directs the directivity of the planar antenna element 2 The direction is scanned on the hemisphere, and the direction with the strongest radio signal is detected. Thereby, it is possible to always maintain the direction of the planar antenna element 2 that is most optimal in the transmission / reception state, and to always optimize the communication state in the mobile phone or the information terminal.

  The signal line 353 is electrically connected to the transmission / reception changeover switch, the planar antenna element 2, and the like, and is formed of, for example, gold, aluminum, titanium, or the like.

  The operation of the movable part 12 and the base movable part 5 starts when it detects that the radio wave detected by the receiving circuit has weakened, and is driven when information indicating that the maximum radio wave is detected is received. It may be controlled by the antenna drive control circuit 352 so as to stop.

  Thus, according to the present embodiment, for example, the planar antenna element 2 is rotated to change the directivity direction to a quarter circumference from a direction perpendicular to the plane 7 to a direction parallel to the original plane. The antenna device 1 capable of rotating 360 degrees about the ¼ circumference, which is the variable range, about the right-angled axis 19 is provided on the substrate. Therefore, since the directivity direction can be controlled in all directions on the surface of the hemisphere, the communication device 300 can reduce the area of the antenna device 1 and prevent the propagation distance of the radio wave from decreasing.

  In particular, the antenna device 1 is formed together with other circuits on a substrate by MEMS technology, and is used as a one-chip transceiver in a communication device such as a mobile phone or an information terminal. Can be achieved.

  Of course, the antenna device used in the above-described communication device 300 is not limited to the antenna device 1, and the antenna devices 101 and 201 are also applicable.

  The present invention has been described above with reference to preferred embodiments. However, the present invention is not limited to any of the above-described embodiments, and various modifications may be made as appropriate within the scope of the technical idea of the present invention. It can be implemented in combination.

1 is a perspective view of an antenna device according to a first embodiment. 1 is a plan view of an antenna device according to a first embodiment. It is sectional drawing of a polymer actuator element. It is a figure explaining operation | movement of the planar antenna element which concerns on 1st Embodiment. It is explanatory drawing when the movable part which concerns on 1st Embodiment curves. It is a perspective view of the antenna device which concerns on 2nd Embodiment. It is a top view of the planar antenna element which concerns on 2nd Embodiment. It is a figure explaining operation | movement of the planar antenna element which concerns on 2nd Embodiment. It is explanatory drawing when the 1st movable part which concerns on 2nd Embodiment curves. It is explanatory drawing when the 2nd movable part which concerns on 2nd Embodiment curves. It is a perspective view of the antenna device which concerns on 3rd Embodiment. It is a top view of the antenna apparatus which concerns on 3rd Embodiment. It is a figure explaining rotation of the 2nd parallel-axis center of the planar antenna element which concerns on 3rd Embodiment. It is a figure explaining rotation of the 3rd parallel-axis center of the planar antenna element which concerns on 3rd Embodiment. It is a perspective view of the communication apparatus which concerns on the 4th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,101,201 ... Antenna apparatus 2 ... Planar antenna element 3 ... Holding part 4,204 ... Base part 5,205 ... Base movable part 7 ... Plane 8 ... Parallel axis 9 ... Projection part 10 ... One end side 11 ... Other end side DESCRIPTION OF SYMBOLS 12 ... Movable part 19,119 ... Right-angle direction axis | shaft 103a, 203a ... 1st holding | maintenance part 103b, 203b ... 2nd holding | maintenance part 108a, 208a ... 1st parallel axis 108b, 208b ... 2nd parallel axis 112a ... 1st 1st movable part 112b ... 2nd movable part 203c ... 3rd holding part 203d ... 4th holding part 208c ... 3rd parallel axis 208d ... 4th parallel axis 212c ... 3rd movable part 212d ... 4th Movable part 222 ... stand 300 ... communication device 351 ... substrate 353 ... signal line

Claims (11)

A planar antenna element having directivity;
A holding unit for holding the planar antenna element so as to be rotatable at least 90 degrees around a parallel axis parallel to the plane;
And a base portion that holds the holding portion so that the planar antenna element is not parallel to the plane and is rotatable at least 360 degrees about a perpendicular axis that is perpendicular to the parallel axis. A feature antenna device. The antenna device according to claim 1,
The planar antenna element has one side that overlaps the parallel axis. The antenna device according to claim 2, wherein
The holding part is
One end side is fixed to the base portion, and the other end side has a movable portion that can be bent so as to be separated from the base portion,
The planar antenna element is rotatably held on the other end side, and is rotated about the parallel axis by separating the one side from the base portion due to the bending of the movable portion. A feature antenna device. A planar antenna element having directivity;
A first holding portion for holding the planar antenna element so as to be rotatable at least 90 degrees around one direction around a first parallel axis parallel to the plane;
A second holding portion for holding the planar antenna element so as to be rotatable at least 90 degrees around the one parallel axis about the second parallel axis parallel to the first parallel axis;
The first and second planar antenna elements are not parallel to the plane and are rotatable at least 180 degrees about a perpendicular axis in a direction perpendicular to the first and second parallel axis directions. An antenna device comprising: a base portion that holds the holding portion. The antenna device according to claim 4, wherein
The planar antenna element has one side that overlaps the first parallel axis and another side that is spaced apart from the one side and overlaps the second parallel axis. The antenna device according to claim 5, wherein
The first holding part is
One end side is fixed to the base portion, and the other end side has a first movable portion that can be bent so as to be separated from the base portion,
The second holding part is
One end side is fixed to the base portion, and the other end side has a second movable portion that can be bent so as to be separated from the base portion,
The planar antenna element is rotatably held at each of the other end sides, and the one side is separated from the base portion by the curvature of the first movable portion, so that the planar antenna element rotates about the second parallel axis. The antenna device is configured to move and rotate about the first parallel axis when the other side is separated from the base portion by the bending of the second movable portion. The antenna device according to claim 6, wherein
The planar antenna element has a substantially quadrangular shape, and the other two opposite sides of the one side and the other side are arranged between the first and second holding portions. The antenna device according to claim 1,
The antenna device further comprising a base movable portion that can rotate the base portion by 360 degrees. A planar antenna element having directivity;
A first holding unit for holding the planar antenna element so as to be rotatable about a first parallel axis about a first parallel axis parallel to the plane;
A second holding portion for holding the planar antenna element so as to be rotatable about the second parallel axis parallel to the first parallel axis and in the opposite direction to the first one direction;
The planar antenna element is rotatable in a second direction around a third parallel axis parallel to the plane and perpendicular to the first and second parallel axes. And a third holding part for holding the second holding part,
The planar antenna element is held by the first and second holding portions so as to be rotatable about the fourth parallel axis parallel to the third parallel axis and counterclockwise around the second one direction. A fourth holding part;
A base portion that holds the third and fourth holding portions so that the planar antenna element is rotatable about at least one of the first, second, third, and fourth parallel axes. An antenna device characterized by that. The antenna device according to claim 9, wherein
An antenna device, further comprising: a base for holding the base part; and a base movable part capable of changing a height from the base at each of the base parts at at least three positions of the base part. A planar antenna element having directivity;
A holding unit for holding the planar antenna element so as to be rotatable at least 90 degrees around a parallel axis parallel to the plane;
The planar antenna element is not parallel to the plane and is rotatable at least 360 degrees about a perpendicular axis perpendicular to the parallel axis. And a substrate having a wiring connected thereto.

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