Antenna device and communication device

Abstract

To provide an antenna device and a communication device which can be miniaturized and reduced in manufacturing cost.SOLUTION: The antenna device 110 includes the radiation element 11, the first substrate 10 on which the radiation element 11 is disposed, the radiation element 21, the second substrate 20 on which the radiation element 21 is disposed, and the support member 23 that supports the second substrate 20 with respect to the first substrate 10 at a position where the first radiation direction of the radiation element 11 and the second radiation direction of the radiation element 21 are different directions.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an antenna device and a communication device. [Background technology]

[0002] In recent years, highly directional flat patch antennas have been used in mobile terminals (communication devices) such as smartphones, and it is necessary to arrange the antennas on different surfaces in order to radiate radio waves in many directions. For example, an antenna device with an L-shaped bent portion has been proposed to realize an antenna device that can radiate radio waves in two directions (Patent Document 1: International Publication No. 2019 / 163419). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2019 / 163419 Summary of the Invention [Problem to be solved by the invention]

[0004] However, to realize an antenna device with an L-shaped bend, it is necessary to connect two dielectric substrates via a flexible substrate and arrange radiating elements on each dielectric substrate to fabricate the antenna device. This complicates the process of fabricating the antenna device, increasing manufacturing costs. Furthermore, since the two dielectric substrates must be connected by a flexible substrate to provide the bend, the size of the antenna device increases.

[0005] Therefore, an object of the present disclosure is to provide an antenna device and a communication device that can be miniaturized and whose manufacturing costs can be reduced. [Means for solving the problem]

[0006] An antenna device according to one embodiment of the present disclosure includes a first radiating element, a first substrate on which the first radiating element is arranged, a second radiating element, a second substrate on which the second radiating element is arranged, and a support member that supports the second substrate relative to the first substrate at a position where a first radiation direction of the first radiating element and a second radiation direction of the second radiating element are different directions.

[0007] A communication device according to an embodiment of the present disclosure is a communication device equipped with an antenna module, the antenna module including the antenna device described above and a power supply circuit that supplies power to the antenna device. [Effects of the Invention]

[0008] According to one embodiment of the present disclosure, the second substrate is supported by a support member relative to the first substrate at a position where the first radiation direction of the first radiating element and the second radiation direction of the second radiating element are different directions, thereby making it possible to miniaturize the antenna device and reduce the manufacturing costs of the antenna device. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a side view of an antenna module including an antenna device according to a first embodiment. [Figure 2] 1 is a perspective view of an antenna device according to a first embodiment. [Figure 3] FIG. 1 is a block diagram of a communication device including an antenna device. [Figure 4] FIG. 4 is a rear view of the second substrate of the antenna device according to the first embodiment. [Figure 5] FIG. 10 is a side view of an antenna module including an antenna device according to a second embodiment. [Figure 6] FIG. 11 is a side view of an antenna module including an antenna device according to a third embodiment. [Figure 7] FIG. 11 is a side view of an antenna module including an antenna device according to a modified example of the third embodiment. [Figure 8] FIG. 10 is a side view of an antenna module including an antenna device according to a fourth embodiment. [Figure 9] FIG. 10 is a side view of an antenna module including an antenna device according to a fifth embodiment. [Figure 10] FIG. 10 is a rear view of a second substrate according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an antenna device and a communication device according to an embodiment will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals, and description thereof will not be repeated.

[0011] (Embodiment 1) First, a communication device including an antenna device will be described. Fig. 1 is a side view of an antenna module 100 including an antenna device 110 according to a first embodiment. Fig. 2 is a perspective view of the antenna device 110 according to the first embodiment. Fig. 3 is a block diagram of a communication device 300 including the antenna device 110. The communication device 300 to which the antenna device 110 according to the first embodiment is applied is, for example, a mobile terminal such as a mobile phone, a smartphone, or a tablet, or a personal computer with a communication function.

[0012] [Communication device configuration] 3, the communication device 300 includes an antenna device 110, an RFIC 120 which is an example of a power supply circuit, and a BBIC 200 which constitutes a baseband signal processing circuit. The RFIC 120 and the antenna device 110 constitute an antenna module 100. The communication device 300 upconverts a signal transmitted from the BBIC 200 to the antenna device 110 in the RFIC 120 to a high-frequency signal and radiates the signal from the antenna device 110. The communication device 300 also transmits the high-frequency signal received by the antenna device 110 to the RFIC 120, where the high-frequency signal is downconverted and processed in the BBIC 200.

[0013] [Antenna device configuration] The antenna device 110 includes a first substrate 10 on which a radiating element 11 (first radiating element) is arranged, and a second substrate 20 on which a radiating element 21 (second radiating element) is arranged. The first substrate 10 has a front surface (third surface) on which the radiating element 11 is provided, and a back surface (fourth surface) on which an RFIC 120 is mounted. Wiring 12 including a GND is provided on the back surface of the first substrate 10, and a portion of the wiring 12 is electrically connected to the RFIC 120. The radiating element 11 is a patch antenna having a flat plate shape, and is electrically connected to a portion of the wiring 12 (not shown) to form a power supply antenna. In the antenna device 110, a plurality of radiating elements 11 are arranged in a line in the depth direction of FIG. 1 to form a one-dimensional array antenna. Note that the plurality of radiating elements 11 may also be arranged in a two-dimensional array on the front surface of the first substrate 10 to form a two-dimensional array antenna.

[0014] The second substrate 20 has a front surface (first surface) on which the radiating element 21 is provided, and a back surface (second surface) opposite the front surface on which the support member 23 is provided. Wiring 22 including a GND is provided on the back surface of the second substrate 20, and a portion of the wiring 22 is electrically connected to a portion of the wiring 12. The radiating element 21 is a patch antenna having a flat plate shape, and although not shown, is electrically connected to a portion of the wiring 22 and serves as a power feeding antenna. In the antenna device 110, as shown in FIG. 2, a plurality of radiating elements 21 are arranged in a line to form a one-dimensional array antenna. Note that the plurality of radiating elements 21 may also be arranged in a two-dimensional array on the front surface of the second substrate 20 to form a two-dimensional array antenna.

[0015] In the antenna device 110, a support member 23 is provided to support the second substrate 20 relative to the first substrate 10 in order to radiate radio waves from two different directions, the radiation direction of the radiating element 11 (first radiation direction) and the radiation direction of the radiating element 21 (second radiation direction). Specifically, in the antenna device 110, a columnar support member 23 is provided on the back surface of the second substrate 20, and the second substrate 20 is placed at an angle on the back surface of the first substrate 10, as shown in FIG. 1. Therefore, the antenna device 110 can radiate radio waves from two directions, where the radiation direction of the radiating element 11 is downward in FIG. 1 and the radiation direction of the radiating element 21 is diagonally upward to the right in FIG. 1.

[0016] The first substrate 10 and the second substrate 20 may be, for example, a low temperature co-fired ceramics (LTCC) multilayer substrate, a multilayer resin substrate formed by stacking multiple resin layers made of resins such as epoxy or polyimide, a multilayer resin substrate formed by stacking multiple resin layers made of liquid crystal polymer (LCP) having a lower dielectric constant, a multilayer resin substrate formed by stacking multiple resin layers made of fluorine-based resin, or a ceramic multilayer substrate other than LTCC.

[0017] Radiating elements 11, 21 have a circular, rectangular, square, or other shape and are, for example, metal plates such as copper foil or copper plate, aluminum foil or aluminum plate, gold foil or gold plate, or silver foil or silver plate. Support member 23 is a member protruding from the rear surface of second substrate 20 and is, for example, a copper post or copper pillar. FIG. 4 is a rear view of second substrate 20 of antenna device 110 according to embodiment 1. As shown in FIG. 4, support member 23 is provided at two locations on the rear surface of second substrate 20. Support member 23 provided on the rear surface of second substrate 20 is not limited to two pillars and may be plate-shaped. Furthermore, the material used for support member 23 is not limited to copper post or copper pillar and may be metal or resin.

[0018] 1, the second substrate 20 has a plurality of side surfaces connecting the front and rear surfaces, and is supported by support member 23 relative to the first substrate 10 at a position where a corner between one of the side surfaces and the rear surface contacts the first substrate 10. Therefore, by using support member 23, the second substrate 20 is mounted in an oblique direction relative to the first substrate 10, and the radiating element 21 can radiate radio waves in an oblique direction relative to the first substrate 10. In other words, the second substrate 20 is supported by support member 23 relative to the first substrate 10 in a direction where the radiation direction of radiating element 11 (first radiation direction) and the radiation direction of radiating element 21 (second radiation direction) are not orthogonal. Note that the second substrate 20 may be structured so that one of the side surfaces contacts the first substrate 10, and in this structure, the radiation direction of radiating element 11 and the radiation direction of radiating element 21 are orthogonal.

[0019] Antenna device 110 can radiate radio waves in two directions with a simple structure in which support member 23 is provided on the back surface of second substrate 20, and can be made smaller than conventional structures, reducing manufacturing costs. Furthermore, if support member 23 is a copper post or copper pillar, then by mounting the copper post or copper pillar on the back surface of second substrate 20, the structure of antenna device 110 can be realized, making manufacturing even easier.

[0020] The wiring 22 provided on the second substrate 20 is electrically connected to the wiring 12 provided on the first substrate 10 via a terminal electrode 24 provided on the back surface of the second substrate 20. The terminal electrode 24 includes an electrode for signal transmission and an electrode for GND. Therefore, the radiating element 21 can receive a signal from the RFIC 120 via the terminal electrode 24.

[0021] 1 is one example, and the support member 23 is not limited to being provided on the back surface of the second substrate 20, and may be provided on the back surface of the first substrate 10, or may be provided as a separate member from the first substrate 10 and the second substrate 20. Furthermore, the structure in which the radiating element 11 is provided on the front surface of the first substrate 10 and the RFIC 120 is mounted on the back surface is one example, and the first substrate 10 may be provided with the radiating element 11 on the back surface and the RFIC 120 on the front surface.

[0022] (Embodiment 2) The antenna device 110 according to the first embodiment has a structure in which a support member 23 is provided on the back surface of the second substrate 20 to support the second substrate 20 at an angle relative to the first substrate 10. The antenna device according to the second embodiment has a structure in which a support member is provided on the side surface of the second substrate 20. FIG. 5 is a side view of an antenna module 100A including an antenna device 110A according to the second embodiment. Note that in the antenna module 100A including the antenna device 110A, the same components as those in the antenna module 100 including the antenna device 110 shown in FIG. 1 are designated by the same reference numerals and detailed description thereof will not be repeated.

[0023] Antenna device 110A includes a first substrate 10 on which radiating element 11 (first radiating element) is arranged, and a second substrate 20 on which radiating element 21 (second radiating element) is arranged. First substrate 10 has a front surface (third surface) on which radiating element 11 is provided, and a back surface (fourth surface) on which RFIC 120 is mounted. Second substrate 20 has a front surface (first surface) on which radiating element 21 is provided, a back surface (second surface) opposite the front surface, and a plurality of side surfaces connecting the front surface and back surface.

[0024] Support member 23a is provided on at least one of the multiple side surfaces, not on the back surface. Antenna device 110A has a structure in which second substrate 20 is placed on the back surface of first substrate 10, with the side surface on which support member 23a is provided facing the back surface of first substrate 10. Support member 23a provided on the side surface allows second substrate 20 to be mounted in an oblique direction relative to first substrate 10, and radiating element 21 can radiate radio waves in an oblique direction relative to first substrate 10.

[0025] Antenna device 110A can radiate radio waves in two directions with a simple structure in which support member 23a is provided on the side surface of second substrate 20, and can be made smaller than conventional structures, thereby reducing manufacturing costs. Furthermore, because support member 23a is smaller in size than support member 23 provided on the back surface of second substrate 20, the material costs of antenna device 110A can be further reduced.

[0026] 5 is one example, and support member 23a is not limited to being provided on the side surface of second substrate 20, and may be provided on the rear surface of first substrate 10, or may be provided as a separate member from first substrate 10 and second substrate 20. Furthermore, the structure in which first substrate 10 has radiating element 11 on the front surface and RFIC 120 mounted on the rear surface is one example, and may be provided with radiating element 11 on the rear surface and RFIC 120 mounted on the front surface.

[0027] (Embodiment 3) The antenna device 110 according to the first embodiment has a structure in which a columnar support member 23 is provided on the back surface of the second substrate 20 to support the second substrate 20 at an angle relative to the first substrate 10. In the antenna device according to the third embodiment, the support member provided on the back surface of the second substrate 20 has a shape having a surface parallel to the back surface of the first substrate 10. FIG. 6 is a side view of an antenna module 100B including an antenna device 110B according to the third embodiment. Note that in the antenna module 100B including the antenna device 110B, the same components as those in the antenna module 100 including the antenna device 110 shown in FIG. 1 are designated by the same reference numerals and detailed description thereof will not be repeated.

[0028] Antenna device 110B includes a first substrate 10 on which radiating element 11 (first radiating element) is arranged, and a second substrate 20 on which radiating element 21 (second radiating element) is arranged. First substrate 10 has a front surface (third surface) on which radiating element 11 is provided, and a back surface (fourth surface) on which RFIC 120 is mounted. Second substrate 20 has a front surface (first surface) on which radiating element 21 is provided, a back surface (second surface) opposite the front surface, and multiple side surfaces connecting the front surface and back surface.

[0029] In antenna device 110B, in order to radiate radio waves from two different directions, the radiation direction of radiating element 11 (first radiation direction) and the radiation direction of radiating element 21 (second radiation direction), a support member 23b is provided that supports second substrate 20 relative to first substrate 10. Specifically, in antenna device 110B, as shown in Fig. 6, a support member 23b having a shape with a surface parallel to the back surface of first substrate 10 is provided on the back surface of second substrate 20, and second substrate 20 is placed at an angle on the back surface of first substrate 10.

[0030] Because support member 23b has a shape having a surface parallel to the back surface of first substrate 10, when second substrate 20 is placed at an angle on the back surface of first substrate 10, second substrate 20 can be stably and reliably supported relative to first substrate 10. Furthermore, antenna device 110B can radiate radio waves in two directions with a simple structure in which support member 23b having a surface parallel to the back surface of first substrate 10 is provided on second substrate 20, and can be made smaller than conventional structures, allowing for reduced manufacturing costs.

[0031] 6 is one example, and support member 23b is not limited to being provided on the back surface of second substrate 20, and may be provided on the back surface of first substrate 10, or may be provided as a separate member from first substrate 10 and second substrate 20. Furthermore, the structure in which first substrate 10 has radiating element 11 on the front surface and RFIC 120 mounted on the back surface is one example, and may be provided with radiating element 11 on the back surface and RFIC 120 mounted on the front surface.

[0032] Furthermore, the shape of the support member provided on the side surface of the second substrate 20 may be a shape having a surface parallel to the back surface of the first substrate 10. Fig. 7 is a side view of an antenna module 100C including an antenna device 110C according to a modified example of embodiment 3. Note that in the antenna module 100C including the antenna device 110C, the same components as those in the antenna module 100 including the antenna device 110 shown in Fig. 1 are denoted by the same reference numerals and detailed description thereof will not be repeated.

[0033] Support member 23c is provided on at least one of the multiple side surfaces, rather than on the back surface. Antenna device 110C has a structure in which second substrate 20 is placed on the back surface of first substrate 10, with the side surface on which support member 23b is provided facing the back surface of first substrate 10. Support member 23c provided on the side surface has a shape having a surface parallel to the back surface of first substrate 10. Second substrate 20 is mounted on support member 23c in an oblique direction relative to first substrate 10, and radiating element 21 can radiate radio waves in an oblique direction relative to first substrate 10.

[0034] (Fourth embodiment) The antenna device 110 according to the first embodiment has a structure in which a support member 23 is provided on the back surface of the second substrate 20, and the second substrate 20 is placed on the back surface of the first substrate 10. The antenna device according to the fourth embodiment has a structure in which the second substrate is hooked onto an end of the first substrate by the support member, thereby supporting the second substrate relative to the first substrate. FIG. 8 is a side view of an antenna module 100D including an antenna device 110D according to the fourth embodiment. Note that in the antenna module 100D including the antenna device 110D, the same components as those in the antenna module 100 including the antenna device 110 shown in FIG. 1 are designated by the same reference numerals, and detailed description thereof will not be repeated.

[0035] Antenna device 110D includes a first substrate 10 on which radiating element 11 (first radiating element) is arranged, and a second substrate 20 on which radiating element 21 (second radiating element) is arranged. First substrate 10 has a front surface (third surface) on which radiating element 11 is provided, and a back surface (fourth surface) on which RFIC 120 is mounted. Second substrate 20 has a front surface (first surface) on which radiating element 21 is provided, a back surface (second surface) opposite the front surface, and multiple side surfaces connecting the front surface and back surface.

[0036] In antenna device 110D, second substrate 20 is supported relative to first substrate 10 by support member 23d in order to radiate radio waves from two different directions, the radiation direction of radiating element 11 (first radiation direction) and the radiation direction of radiating element 21 (second radiation direction). Specifically, in antenna device 110D, second substrate 20 is supported relative to first substrate 10 by support member 23d provided on the back surface of second substrate 20, which is hooked onto the end of first substrate 10, as shown in Fig. 8. In other words, support member 23d abuts against the back surface of first substrate 10, and the back surface of second substrate 20 abuts against the corner of first substrate 10, thereby supporting second substrate 20 relative to first substrate 10.

[0037] Antenna device 110D has a structure in which second substrate 20 is supported relative to first substrate 10 by hooking second substrate 20 onto an end of first substrate 10 with support member 23d rather than placing second substrate 20 on the back surface of first substrate 10, and therefore can reduce height H. Furthermore, antenna device 110D can radiate radio waves in two directions with a simple structure in which second substrate 20 is hooked onto an end of first substrate 10 with support member 23d, and can be made smaller than conventional structures, allowing for reduced manufacturing costs.

[0038] 8 is one example, and the shape of support member 23d for hooking second substrate 20 onto the end of first substrate 10 is not limited to a pillar shape, and may be any shape that makes it easy to hook second substrate 20 onto the end of first substrate 10. Furthermore, the structure in which first substrate 10 has radiating element 11 on the front surface and RFIC 120 mounted on the back surface is one example, and first substrate 10 may have a structure in which radiating element 11 is mounted on the back surface and RFIC 120 is mounted on the front surface.

[0039] (Embodiment 5) The antenna device 110 according to the first embodiment has a structure in which the second substrate 20 is supported obliquely relative to the first substrate 10 by one type of support member 23 provided on the second substrate 20. The antenna device according to the fifth embodiment has a structure in which the second substrate is supported obliquely relative to the first substrate by two types of support members. FIG. 9 is a side view of an antenna module 100E including an antenna device 110E according to the fifth embodiment. Note that in the antenna module 100E including the antenna device 110E, the same components as those in the antenna module 100 including the antenna device 110 shown in FIG. 1 are designated by the same reference numerals and detailed description thereof will not be repeated.

[0040] In antenna device 110E, in order to radiate radio waves from two different directions, the radiation direction of radiating element 11 (first radiation direction) and the radiation direction of radiating element 21 (second radiation direction), support member 23 and support member 23a are provided to support second substrate 20 relative to first substrate 10. Specifically, in antenna device 110E, as shown in Fig. 9, two types of support members are provided: support member 23 on the back surface of second substrate 20 and support member 23a on the side surface of second substrate 20, and second substrate 20 is placed at an angle on the back surface of first substrate 10.

[0041] Antenna device 110E can radiate radio waves in two directions with a simple structure in which support member 23 and support member 23a are provided on second substrate 20, and can be made smaller than conventional structures, thereby reducing manufacturing costs. The structure of antenna device 110E shown in Fig. 9 is one example, and the combination of two types of support members provided on second substrate 20 is not limited to support member 23 and support member 23a, but may be support member 23 and support member 23c (see Fig. 7), support member 23b (see Fig. 6) and support member 23a, etc.

[0042] (Variation) On the back surface of second substrate 20 shown in Fig. 4, support members 23 are provided at both ends in the longitudinal direction of second substrate 20, and terminal electrodes 24 are provided for electrically connecting wiring 22 provided on second substrate 20 and wiring 12 provided on first substrate 10. However, the configuration of the back surface of second substrate 20 shown in Fig. 4 is one example, and is not limited to this. Fig. 10 is a back view of a second substrate according to a modified example.

[0043] 10, copper post support members 23e and 23g are provided on the back surface of the second substrate 20, but no terminal electrode 24 is provided. Support member 23e functions as a support member that supports the second substrate 20 relative to the first substrate 10, and also functions as a signal transmission electrode that is electrically connected to the wiring 22 provided on the second substrate 20. Support member 23g functions as a support member that supports the second substrate 20 relative to the first substrate 10, and also functions as a GND electrode that is electrically connected to the wiring 22 provided on the second substrate 20. Therefore, the second substrate 20 shown in FIG. 10 does not require terminal electrode 24.

[0044] Furthermore, on the back surface of the second substrate 20 shown in FIG. 10, the support member 23e is sandwiched between two support members 23g. Therefore, the support member 23e, which functions as a signal transmission electrode, can be made less susceptible to external noise by the support member 23e, which functions as a GND electrode. In other words, by appropriately selecting the shapes and sizes of the support members 23e and 23g, a coplanar line or stripline can be formed, and electrical characteristics can be stabilized. The support members 23e and 23g are not limited to copper posts and may be made of other conductive metals.

[0045] In antenna device 110, support member 23 may be made of metal and used as a member for performing impedance matching of radiating element 11 (first radiating element) or radiating element 21 (second radiating element). Similarly, in antenna devices 110A to 110E, support members may be used as members for performing impedance matching of radiating element 11 (first radiating element) or radiating element 21 (second radiating element).

[0046] In antenna device 110, support member 23 may be made of metal and used as a radiating element (third radiating element). Similarly, in antenna devices 110A to 110E, a support member may be used as a radiating element (third radiating element).

[0047] In antenna device 110, support member 23 may be made of metal and used as a parasitic element for radiating element 11 (first radiating element) or radiating element 21 (second radiating element). Similarly, in antenna devices 110A to 110E, support members may be used as parasitic elements for radiating element 11 (first radiating element) or radiating element 21 (second radiating element).

[0048] [Aspect] (1) An antenna device according to the present disclosure includes: a first radiating element; a first substrate on which a first radiating element is disposed; a second radiating element; a second substrate on which a second radiating element is disposed; The antenna further includes a support member that supports the second substrate relative to the first substrate at a position where the first radiation direction of the first radiation element and the second radiation direction of the second radiation element are different directions.

[0049] As a result, the antenna device according to the present disclosure supports the second substrate relative to the first substrate with the support member at a position where the first radiation direction of the first radiating element and the second radiation direction of the second radiating element are different directions, thereby making it possible to miniaturize the antenna device and reduce the manufacturing costs of the antenna device.

[0050] (2) The antenna device according to (1), The support member is provided on the first substrate or the second substrate.

[0051] (3) The antenna device according to (2), the second substrate has a first surface on which the second radiating element is provided, a second surface opposite to the first surface, and a plurality of side surfaces connecting the first surface and the second surface; The support member is provided on a surface different from the first surface.

[0052] (4) The antenna device according to (3), The support member is provided on the second surface and at least one of the side surfaces.

[0053] (5) The antenna device according to (3) or (4), The support member has a surface parallel to the second surface of the first substrate.

[0054] (6) The antenna device according to any one of (3) to (5), The second substrate is supported by a support member relative to the first substrate at a position where a corner between one of the side surfaces and the second surface contacts the first substrate.

[0055] (7) The antenna device according to any one of (3) to (5), The second substrate is hooked onto the end of the first substrate by a support member provided on the second surface of the second substrate, thereby supporting the second substrate relative to the first substrate.

[0056] (8) The antenna device according to any one of (1) to (7), the first substrate has a third surface on which the first radiating element is provided and a fourth surface opposite to the third surface; The second substrate is supported on the fourth surface relative to the first substrate by a support member.

[0057] (9) The antenna device according to any one of (1) to (8), The second substrate is supported by a support member relative to the first substrate in a direction in which the first radiation direction and the second radiation direction are not orthogonal to each other.

[0058] (10) The antenna device according to any one of (1) to (9), The support member is made of metal.

[0059] (11) The antenna device according to (10), The support member has a function of performing impedance matching of the first radiating element or the second radiating element.

[0060] (12) The antenna device according to (10), The support member functions as a third radiating element.

[0061] (13) The antenna device according to (10), The support member functions as a parasitic element for the first radiating element or the second radiating element.

[0062] (14) The antenna device according to (10), The support member functions as an electrode that electrically connects the wiring of the first substrate and the wiring of the second substrate.

[0063] (15) A communication device according to the present disclosure, A communication device equipped with an antenna module, The antenna module is The antenna device according to any one of (1) to (14), and a power supply circuit that supplies power to the antenna device.

[0064] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0065] 10 first substrate, 11, 21 radiating element, 12, 22 wiring, 20 second substrate, 23, 23a to 23e, 23g support member, 24 terminal electrode, 100, 100A to 100E antenna module, 110, 110A to 110E antenna device, 300 communication device.

Claims

1. a first radiating element; a first substrate on which the first radiating element is disposed; a second radiating element; and a second substrate on which the second radiating element is disposed; a support member that supports the second substrate relative to the first substrate at a position where a first radiation direction of the first radiating element and a second radiation direction of the second radiating element are different directions.

2. The antenna device according to claim 1 , wherein the support member is provided on the first substrate or the second substrate.

3. the second substrate has a first surface on which the second radiating element is provided, a second surface opposite to the first surface, and a plurality of side surfaces connecting the first surface and the second surface; The antenna device according to claim 2 , wherein the support member is provided on a surface different from the first surface.

4. The antenna device according to claim 3 , wherein the support member is provided on the second surface and at least one of the side surfaces.

5. The antenna device according to claim 3 , wherein the support member has a surface parallel to the second surface of the first substrate.

6. The antenna device according to claim 3 , wherein the second substrate is supported by the support member relative to the first substrate at a position where a corner between one of the plurality of side surfaces and the second surface contacts the first substrate.

7. The antenna device according to claim 3 , wherein the second substrate is supported relative to the first substrate by hooking the second substrate onto an end of the first substrate by the support member provided on the second surface of the second substrate.

8. the first substrate has a third surface on which the first radiating element is provided and a fourth surface opposite to the third surface, The antenna device according to claim 3 , wherein the second substrate is supported on the fourth surface relative to the first substrate by the support member.

9. The antenna device according to any one of claims 1 to 5, wherein the second substrate is supported by the support member relative to the first substrate in a direction in which the first radiation direction and the second radiation direction are not perpendicular to each other.

10. The antenna device according to any one of claims 1 to 5, wherein the support member is made of metal.

11. The antenna device according to claim 10 , wherein the support member has a function of performing impedance matching of the first radiating element or the second radiating element.

12. The antenna device according to claim 10 , wherein the support member functions as a third radiating element.

13. The antenna device according to claim 10 , wherein the support member functions as a parasitic element for the first radiating element or the second radiating element.

14. The antenna device according to claim 10 , wherein the support member functions as an electrode that electrically connects the wiring of the first substrate and the wiring of the second substrate.

15. A communication device equipped with an antenna module, The antenna module includes: The antenna device according to any one of claims 1 to 5, a power supply circuit that supplies power to the antenna device.

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