Antenna device, communication device, and method for manufacturing antenna device

Abstract

A first portion and a second portion are connected to a first surface having a connection portion between the first surface and a second surface opposite to the first surface. A first radiating element is disposed in the first portion, and a second radiating element is disposed in the second portion. The connecting portion includes: a first flat plate portion; a bent part which extends from the first flat plate part and is bent in a manner that the first surface is positioned on the outer side; and a second flat plate portion extending further from the bent portion. The first portion is connected to a first surface of the first flat plate portion and includes a first extension portion extending from a boundary between the first flat plate portion and the curved portion toward the curved portion. The second portion is connected to the first surface of the second flat plate portion and includes a second extension portion extending from a boundary between the second flat plate portion and the curved portion toward the curved portion. At least a portion of the first extension portion and at least a portion of the second extension portion occupy the same position in a direction parallel to an intersecting line of a plane along which the first flat plate portion and a plane along which the second flat plate portion are along. A first distance in a direction perpendicular to a first reference surface from the first reference surface orthogonal to the first surface of the first flat plate portion and parallel to the first direction to a surface intersecting the thickness direction of the first extension portion; a second distance from a second reference surface orthogonal to the first surface of the second flat plate section and parallel to the first direction to a surface intersecting the thickness direction of the second extension section in a direction perpendicular to the second reference surface, and a third distance, which is the shortest distance from the first reference surface to the second reference surface via a path along the first surface, have the following relationship. The sum of the first distance and the second distance at positions having the same height from the first surface is equal to or less than a third distance. The sum of the maximum value of the first distance and the maximum value of the second distance is longer than the third distance.

Description

Technical Field

[0001] The present invention relates to an antenna device, a communication device and a method for manufacturing the antenna device. Background Art

[0002] For communication devices such as mobile terminals, it is desired to receive radio waves from various directions and radiate radio waves in various directions. In order to meet this requirement, antennas need to be arranged on more surfaces of the housing. An antenna device is known that connects two flat portions with different normal directions by a bent portion (Patent Document 1). The two flat portions and the bent portion are manufactured by processing a flat substrate to form a thinner portion and bending the thinner portion.

[0003] The two flat plate parts include a plurality of protrusions, which protrude from the boundary between the flat plate parts and the curved part toward the curved part and are suspended from the curved part. The protrusion length of the protrusion is set in a manner that the plurality of protrusions do not interfere with each other in space before the curved part is bent (Figure 20 of Patent Document 1). Alternatively, the protrusion of one flat plate part and the protrusion of the other flat plate part are alternately arranged in a direction parallel to the intersection line of the two planes along which the two flat plate parts are arranged (Figure 22 of Patent Document 1). A radiation element is arranged on the protrusion of each of the two flat plate parts.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: International Publication No. 2020 / 170722 Summary of the invention

[0007] Problem that the invention aims to solve

[0008] In the conventional antenna device (FIG. 20 of Patent Document 1), the protruding length of the protruding portion is limited so that the plurality of protruding portions do not interfere spatially before the bent portion is bent. Since the protruding amount of the protruding portion is limited, the size of the radiating element disposed on the protruding portion is also limited.

[0009] In the conventional antenna device (FIG. 22 of Patent Document 1), the protrusion of one flat plate and the protrusion of another flat plate are alternately arranged in a direction parallel to the above-mentioned intersection line, thereby alleviating the restriction on the protrusion length of the protrusion. However, the plurality of radiating elements arranged on the protrusion of one flat plate cannot be arranged in a direction parallel to the intersection line within the range where the protrusion of the other flat plate is arranged. Thus, the degree of freedom of arrangement of the radiating elements is limited.

[0010] An object of the present invention is to provide an antenna device and a manufacturing method thereof that can relax the upper limit of the size of a plurality of radiating elements arranged on two surfaces connected via a bend and having different normal directions and improve the degree of freedom of arrangement. Another object of the present invention is to provide a communication device equipped with the antenna device.

[0011] Solutions for solving problems

[0012] According to one aspect of the present invention,

[0013] An antenna device is provided, wherein:

[0014] The antenna device comprises:

[0015] A plate-shaped connecting portion having a first surface and a second surface on the side opposite to the first surface;

[0016] a plate-shaped first portion and a second portion connected to the first surface of the connecting portion;

[0017] a first radiation element disposed in the first portion; and

[0018] a second radiation element, which is arranged in the second portion,

[0019] The connecting part comprises:

[0020] The first flat plate portion;

[0021] a bent portion extending from the first flat plate portion and bent so that the first surface is located outside; and

[0022] a second flat plate portion further extending from the bent portion,

[0023] The first portion is connected to the first surface of the first flat portion, and includes a first extension portion extending from a boundary between the first flat portion and the curved portion toward the curved portion.

[0024] The second portion is connected to the first surface of the second flat plate portion and includes a second extension portion extending from a boundary between the second flat plate portion and the curved portion toward the curved portion.

[0025] At least a portion of the first extension portion and at least a portion of the second extension portion occupy the same position in a first direction parallel to an intersection line of a plane along which the first flat plate portion is located and a plane along which the second flat plate portion is located.

[0026] A first distance in a direction perpendicular to the first reference plane from a first surface of the first flat plate portion that is perpendicular to the first direction and parallel to the first direction to a surface that intersects the thickness direction of the first extension portion, a second distance in a direction perpendicular to the second reference plane from a second reference plane that is perpendicular to the first surface of the second flat plate portion and parallel to the first direction to a surface that intersects the thickness direction of the second extension portion, and a third distance that is the shortest distance from the first reference plane to the second reference plane via a path along the first surface have the following relationship: a sum of the first distance and the second distance at positions at the same height from the first surface is less than or equal to the third distance,

[0027] A sum of a maximum value of the first distance and a maximum value of the second distance is longer than the third distance.

[0028] According to another aspect of the present invention,

[0029] A communication device is provided, wherein:

[0030] The communication device comprises:

[0031] The antenna device; and

[0032] A circuit supplies a high-frequency signal to the first radiating element and the second radiating element.

[0033] According to another aspect of the present invention,

[0034] A method for manufacturing an antenna device is provided, wherein:

[0035] A first radiation element and a second radiation element are formed in the plate-shaped first portion and the plate-shaped second portion, respectively.

[0036] The first part and the second part are bonded to a first surface which is one surface of a flexible substrate in a positional relationship that at least a portion of the first radiating element overlaps with the second part when the first surface is viewed from above, and the portion where the first part and the second part overlap is not bonded to the substrate,

[0037] A portion of the substrate that is not bonded to the first portion and the second portion is bent in a direction in which the first surface is located outside, and a portion where the first portion and the second portion overlap each other is suspended from the bent portion of the substrate.

[0038] Effects of the Invention

[0039] The first part and the second part do not interfere with each other spatially even when the bent portion is deformed into a flat plate shape while being connected to the connecting portion, so the first part and the second part can be fixed to the connecting portion while the connecting portion is in a flat plate shape. After the first part and the second part are fixed to the connecting portion, the connecting portion can be bent. Thus, the difficulty of the manufacturing process can be reduced compared to a method of fixing the first part and the second part to a bent connecting portion.

[0040] The sum of the maximum value of the first distance and the maximum value of the second distance is longer than the third distance, so the constraint on the size of the first radiating element arranged in the first extension portion is relaxed compared to the conventional antenna device shown in FIG. 20 of Patent Document 1. At least a portion of the first extension portion and at least a portion of the second extension portion occupy the same position in a direction parallel to the intersection line of the plane along which the first flat plate portion is located and the plane along which the second flat plate portion is located, so the first radiating element and the second radiating element can be arranged at the same position in a direction parallel to the intersection line compared to the conventional antenna device shown in FIG. 22 of Patent Document 1, and the degree of freedom in arrangement of the radiating elements is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 of Figure 1 A and Figure 1 B are a perspective view and a cross-sectional view of the antenna device of the first embodiment, respectively.

[0042] Figure 2A , Figure 2B as well as Figure 2C It is a cross-sectional view of the antenna device of the first embodiment at an intermediate stage of manufacturing.

[0043] Figure 3 It is a perspective view of an antenna device according to a comparative example.

[0044] Figure 4 It is a schematic cross-sectional view of the antenna device according to the first embodiment.

[0045] Figure 5A and Figure 5B They are respectively a perspective view and a cross-sectional view of the antenna device according to the second embodiment.

[0046] Figure 6 This is a cross-sectional view of a state in which the bent portion of the antenna device according to the second embodiment is deformed into a flat plate shape.

[0047] Fig. 7A , Figure 7B as well as Figure 7C It is a cross-sectional view of the antenna device of the second embodiment at an intermediate stage of manufacturing.

[0048] Figure 8 It is a cross-sectional view of the antenna device according to the third embodiment.

[0049] Fig.9A and Fig. 9B It is a cross-sectional view of the antenna device of the third embodiment at an intermediate stage of manufacturing.

[0050] Fig.10 It is a cross-sectional view of the antenna device according to the fourth embodiment.

[0051] Fig.11 It is a cross-sectional view of the antenna device according to the fifth embodiment.

[0052] Fig. 12A is a cross-sectional view of the antenna device of the sixth embodiment, Fig. 12B is a perspective view of the second radiating element.

[0053] Fig.13 It is a cross-sectional view of the antenna device according to the seventh embodiment.

[0054] Fig.14 It is a block diagram of a communication device according to the eighth embodiment.

[0055] Fig.15 It is a three-dimensional diagram of the communication device of the eighth embodiment.

[0056] Fig.16 It is a cross-sectional view of the antenna device according to the ninth embodiment.

[0057] Fig.17 This is a cross-sectional view of a state in which the bent portion of the antenna device according to the ninth embodiment is deformed into a flat plate shape. DETAILED DESCRIPTION

[0058] [First embodiment]

[0059] Refer to the attached pictures Figure 1 A~ Figure 2C , the antenna device of the first embodiment is described.

[0060] Figure 1 A and Figure 1 B are a perspective view and a cross-sectional view of the antenna device 20 of the first embodiment. The antenna device 20 of the first embodiment includes a plate-shaped first portion 21, a second portion 22, and a connecting portion 23 connecting the two. A plurality of first radiating elements 31 are arranged on the first portion 21, and a plurality of second radiating elements 32 are arranged on the second portion 22.

[0061] The connecting portion 23 is a plate-shaped member having a first surface 23P and a second surface 23S on the side opposite to the first surface 23P. The connecting portion 23 includes a first flat plate portion 23A in the form of a plate, a curved portion 23C extending from the first flat plate portion 23A and curved in a manner such that the first surface 23P is on the outside, and a second flat plate portion 23B in the form of a plate further extending from the curved portion 23C. The first surface 23P of the curved portion 23C constitutes a cylindrical surface, such as a cylindrical surface, an elliptical cylindrical surface, etc. In the following, there is a case where the side facing the first surface 23P of the connecting portion 23 is referred to as the "outside", and the side facing the second surface 23S is referred to as the "inside".

[0062] The first flat plate portion 23A and the curved portion 23C are smoothly continuous at their boundaries, and the curved portion 23C and the second flat plate portion 23B are also smoothly continuous at their boundaries. The bending angle of the curved portion 23C is, for example, 90°. Alternatively, the bending angle may be other than this.

[0063] The first portion 21 and the second portion 22 are respectively connected to the first surface 23P of the first flat portion 23A and the first surface 23P of the second flat portion 23B of the connecting portion 23. For example, a metal pattern (not shown) is provided on the first surface 23P of the first flat portion 23A, a part of the inner surface of the first portion 21, the first surface 23P of the second flat portion 23B, and a part of the inner surface of the second portion 22, and the first portion 21 and the first flat portion 23A are bonded by solder, and the second portion 22 and the second flat portion 23B are bonded by solder.

[0064] The first portion 21 includes a first extension portion 21E extending from a boundary between the first flat portion 23A and the curved portion 23C to the curved portion 23C side. Similarly, the second portion 22 includes a second extension portion 22E extending from a boundary between the second flat portion 23B and the curved portion 23C to the curved portion 23C side. The first extension portion 21E and the second extension portion 22E are suspended from the first surface 23P of the curved portion 23C. The portion of the first portion 21 bonded to the connecting portion 23 (the portion other than the first extension portion 21E) is referred to as a first bonding portion 21M. Similarly, the portion of the second portion 22 bonded to the connecting portion 23 (the portion other than the second extension portion 22E) is referred to as a second bonding portion 22M.

[0065] The first extension portion 21E is arranged in the entire region from one end to the other end of the first portion 21 in the direction DI parallel to the intersection line (hereinafter, sometimes simply referred to as "intersection line") of the plane along which the first flat plate portion 23A and the plane along which the second flat plate portion 23B are arranged. Similarly, the second extension portion 22E is arranged in the entire region from one end to the other end of the second portion 22 in the direction DI parallel to the intersection line. An imaginary plane formed by further extending the inner surface of the second portion 22 from the top end of the second extension portion 22E passes through the first extension portion 21E of the first portion 21.

[0066] The plurality of first radiating elements 31 are arranged on the outwardly facing surface of the first portion 21 along a direction DI parallel to the intersection line. The plurality of second radiating elements 32 are arranged on the outwardly facing surface of the second portion 22 along a direction DI parallel to the intersection line. At least a portion of each of the plurality of first radiating elements 31 is arranged on the first extension portion 21E. Similarly, at least a portion of each of the plurality of second radiating elements 32 is arranged on the second extension portion 22E. In addition, the plurality of first radiating elements 31 and the plurality of second radiating elements 32 do not need to be exposed, and may be covered by a protective film or the like.

[0067] The first portion 21 is provided with a first ground conductor 35, and each of the plurality of first radiating elements 31 and the first ground conductor 35 constitute a patch antenna. A portion of the first ground conductor 35 is provided at the first extension portion 21E. The second portion 22 is provided with a second ground conductor 36, and each of the plurality of second radiating elements 32 and the second ground conductor 36 constitute a patch antenna. A portion of the second ground conductor 36 is provided at the second extension portion 22E. The direction from the first ground conductor 35 toward the first radiating element 31 is the same as the direction toward which the first surface 23P of the first flat portion 23A is directed. The direction from the second ground conductor 36 toward the second radiating element 32 is the same as the direction toward which the first surface 23P of the second flat portion 23B is directed.

[0068] The first part 21 and the second part 22 have shapes that do not interfere with each other spatially even if the bent portion 23C is flattened when connected to the connecting portion 23, and overlap each other in a plan view when the bent portion 23C is flattened. "Interfering with each other spatially" means that a plurality of components collide with each other in space and two components cannot be arranged in a desired positional relationship. The shapes of the first part 21 and the second part 22 are described below.

[0069] A first step 21S extending in a direction DI parallel to the intersection line is provided on the inner surface of the first portion 21. The thickness of the portion closer to the top end of the first extension portion 21E than the first step 21S is thinner than the thickness of the portion connected to the first flat plate portion 23A. The thickness of the second extension portion 22E is equal to or thinner than the height H1 of the first step 21S. The first step 21S may be arranged at the same position as the boundary between the first extension portion 21E and the first adhesive portion 21M, or may be arranged inside the first extension portion 21E.

[0070] When the curved portion 23C is deformed into a flat plate, the surface of the top end of the second extension portion 22E faces the surface of the first step 21S. When the first surface 23P is viewed from above in the state where the curved portion 23C is deformed into a flat plate, the portion of the first extension portion 21E closer to the top end than the first step 21S overlaps with the second portion 22. Since the first step 21S is provided, the first portion 21 and the second portion 22 do not interfere with each other in space when the curved portion 23C is deformed into a flat plate. In addition, "deform the curved portion 23C into a flat plate" includes not only the case where the curved portion 23C is actually deformed into a flat plate, but also the case where the curved portion 23C is deformed into a flat plate as a thought experiment, regardless of whether the curved portion 23C can actually be deformed into a flat plate. When the curved portion 23C is deformed into a flat plate, the dimension in the bending direction is not changed.

[0071] Next, refer to Figure 2A , Figure 2B as well as Figure 2C , a method for manufacturing the antenna device of the first embodiment is described. Figure 2A , Figure 2B as well as Figure 2C It is a cross-sectional view of the antenna device of the first embodiment at an intermediate stage of manufacturing.

[0072] like Figure 2A As shown in FIG. 1 , the first part 21 and the second part 22 are separately manufactured. The first radiation element 31 and the first ground conductor 35 are arranged in the first part 21, and the first step 21S is provided. The thickness of one part is thinner than the thickness of the other part with the first step 21S as a boundary. The second radiation element 32 and the second ground conductor 36 are arranged in the second part 22. In addition, a flexible flat plate-shaped connecting part 23 having a first surface 23P is prepared.

[0073] The first portion 21 and the second portion 22 are provided with soldering plates (not shown) for bonding with the connection portion 23. A plurality of solder pads (not shown) are provided on the first surface 23P of the connection portion 23. These structures can be manufactured using a known manufacturing method for a printed wiring board, a low temperature co-fired ceramic substrate, or the like.

[0074] like Figure 2BAs shown in FIG. 1 , the first part 21 and the second part 22 are bonded to the first surface 23P of the connecting part 23. For example, solder can be used for this bonding. Figure 1 In the region of the bent portion 23C shown in FIG. B, the first portion 21 and the second portion 22 are not bonded to the first surface 23P. When the first portion 21 and the second portion 22 are bonded to the flat-plate-shaped connecting portion 23, when the first surface 23P is viewed from above, a relatively thin portion of the first portion 21 on the side bounded by the first step 21S overlaps a portion of the second portion 22. One end surface of the second portion 22 faces the first step 21S.

[0075] like Figure 2C As shown by the arrow in the figure, the connecting portion 23 is bent. Figure 2C In the figure, the shape after bending is indicated by a dotted line. The portion of the connecting portion 23 that is not bonded to the first portion 21 and the second portion 22 is bent to form a bent portion 23C. The portion of the first portion 21 and the second portion 22 that is not bonded to the connecting portion 23 is suspended from the bent first surface 23P of the bent portion 23C, thereby obtaining a first extension portion 21E and a second extension portion 22E ( Figure 1 B).

[0076] Next, the excellent effects of the first embodiment will be described.

[0077] In the first embodiment, the normal direction of the first flat plate portion 23A of the connecting portion 23 is different from the normal direction of the second flat plate portion 23B. The reference line of the first radiating element 31 is parallel to the normal direction of the first flat plate portion 23A, and the reference line of the second radiating element 32 is parallel to the normal direction of the second flat plate portion 23B. In this way, the first radiating element 31 and the second radiating element 32 having different reference line directions can be arranged in the first portion 21 and the second portion 22 connected via the connecting portion 23.

[0078] In the first embodiment, Figure 2B As shown in FIG. 1 , the first part 21 and the second part 22 are arranged so as not to interfere with each other spatially before the connection part 23 is bent. Therefore, the first part 21 and the second part 22 can be bonded to the connection part 23 before the connection part 23 is bent. Compared with the method of bonding the first part 21 and the second part 22 to the bent connection part 23, an excellent effect of simplifying the manufacturing process is obtained.

[0079] Moreover, if Figure 2BAs shown in the figure, a part of the first part 21 overlaps a part of the second part 22 before the connection part 23 is bent, so that the excellent effect of increasing the length of the first extension part 21E and the second extension part 22E in the extension direction after the connection part 23 is bent is obtained. For example, the extension length of the first extension part 21E can be extended to a positional relationship in which a virtual plane formed by further extending the inner surface of the second part 22 from the top end of the second extension part 22E passes through the first extension part 21E of the first part 21.

[0080] At least a portion of each of the first radiating element 31 and the second radiating element 32 is disposed on the first extension portion 21E and the second extension portion 22E. Therefore, when the antenna device 20 is disposed at a corner of the inner surface of the housing, the first radiating element 31 and the second radiating element 32 can be placed close to the corner. Thus, the space at the corner in the housing can be effectively used.

[0081] Then, with Figure 3 The excellent effects of the first embodiment will be described in comparison with the antenna device of the comparative example shown.

[0082] Figure 3 2 is a perspective view of an antenna device of a comparative example. The flat plate-shaped first portion 21 and the second portion 22 are connected via a curved connecting portion 23. The first extension portion 21E of the first portion 21 and the second extension portion 22E of the second portion 22 are alternately arranged in a direction DI parallel to the intersection line of the plane along which the first portion 21 and the plane along which the second portion 22 are arranged. The reason for setting such a structure is that the first portion 21 and the second portion 22 do not interfere with each other in space when the connecting portion 23 is deformed into a flat plate shape. The first radiating element 31 and the second radiating element 32 are arranged in the first extending portion 21E and the second extending portion 22E, respectively.

[0083] exist Figure 3 In the comparative example shown, the plurality of first extension portions 21E and the plurality of second extension portions 22E are alternately arranged in the direction DI parallel to the intersection line, so the first radiation element 31 and the second radiation element 32 cannot be arranged at the same position in the direction DI parallel to the intersection line. In addition, the plurality of first extension portions 21E are discretely arranged in the direction DI parallel to the intersection line, so the lower limit value of the interval between the plurality of first radiation elements 31 is limited. Similarly, the lower limit value of the interval between the second radiation elements 32 is also limited.

[0084] In contrast, in the first embodiment, the first extension portion 21E is arranged in the entire region from one end to the other end of the first portion 21 in the direction DI parallel to the intersection line, so that the first radiating element 31 and the second radiating element 32 can be arranged at the same position in the direction DI parallel to the intersection line. In addition, the plurality of first radiating elements 31 can be arranged at a narrow interval. Similarly, the plurality of second radiating elements 32 can be arranged at a narrow interval. Thus, when the plurality of first radiating elements 31 and the plurality of second radiating elements 32 are operated as a phased array antenna, the occurrence of grating lobes can be suppressed.

[0085] Next, refer to Figure 4 , the dimensions of the first extension portion 21E, the second extension portion 22E, and the bent portion 23C of the antenna device according to the first embodiment are described. Figure 4 It is a schematic cross-sectional view of the antenna device according to the first embodiment.

[0086] A plane that is orthogonal to the first surface 23P of the first flat portion 23A and parallel to the direction DI parallel to the intersection line is referred to as a first reference plane 21R, and a plane that is orthogonal to the first surface 23P of the second flat portion 23B and parallel to the direction DI parallel to the intersection line is referred to as a second reference plane 22R. At a position where the height from the first surface 23P of the first flat portion 23A is h1, the distance from the first reference plane 21R to a surface 21F that intersects the thickness direction of the first extension portion 21E is referred to as a first distance L1. Similarly, at a position where the height from the first surface 23P of the second flat portion 23B is h2, the distance from the second reference plane 22R to a surface 22F that intersects the thickness direction of the second extension portion 22E is referred to as a second distance L2. Figure 4 In FIG. 1 , a surface 21F intersecting the thickness direction of the first extension portion 21E and a surface 22F intersecting the thickness direction of the second extension portion 22E are indicated by relatively thick solid lines. The shortest distance from the first reference plane 21R to the second reference plane 22R via a path along the first surface 23P of the connecting portion 23 is referred to as a third distance L3.

[0087] The sum of the first distance L1 and the second distance L2 at the position where the height h1 is equal to the height h2 (h1=h2) is less than the third distance L3. In addition, in the range where the height h1 is greater than the height h2 (h1≥h2), the first distance L1 may be longer than the third distance L3.

[0088] When the relationship between the dimensions of the first extension portion 21E, the second extension portion 22E, and the connecting portion 23 is set as described above, Figure 2B In the state before bending shown, the first part 21 and the second part 22 do not interfere with each other in space. Figure 2A , Figure 2B as well as Figure 2CThe manufacturing method shown is used to manufacture an antenna device.

[0089] In addition, the sum of the maximum value L1max of the first distance L1 and the maximum value L2max of the second distance L2 is longer than the third distance L3. For example, when viewed from the first surface 23P of the first flat portion 23A, the sum of the maximum value L1Max of the first distance L1 at a portion higher than the height of the first step 21S and the maximum value L2max of the second distance L2 at the second portion 22 is longer than the third distance L3. Such a structure can be achieved by adopting Figure 2B The stage shown is realized by a structure in which a relatively thin portion on one side (the front end side of the first extension portion 21E) of the first portion 21 that is divided by the first step 21S in plan view of the first surface 23P overlaps a portion of the second portion 22 .

[0090] Next, a modification of the first embodiment will be described.

[0091] In the first embodiment, in the direction DI ( Figure 1 A), the first extension portion 21E is arranged in the entire region from one end to the other end of the first portion 21, and the second extension portion 22E is arranged in the entire region from one end to the other end of the second portion 22. As a modified example, the first extension portion 21E and the second extension portion 22E may be arranged in a partial range between the two ends. However, in order to avoid reducing the degree of freedom of arrangement of the first radiation element 31 and the second radiation element 32, it is preferable to set a structure in which at least a portion of the first extension portion 21E and at least a portion of the second extension portion 22E occupy the same position in the direction DI parallel to the intersection line.

[0092] In the first embodiment, the first radiating element 31 and the second radiating element 32 respectively form a patch antenna together with the first ground conductor 35 and the second ground conductor 36, but may form an antenna other than a patch antenna. For example, at least one of the first radiating element 31 and the second radiating element 32 may be a dipole antenna or the like.

[0093] [Second embodiment]

[0094] Next, refer to Figure 5A , Figure 5B as well as Figure 6 The antenna device of the second embodiment is described below. Figure 1 A~ Figure 2C The description of the common structure of the antenna device of the first embodiment will be omitted.

[0095] Figure 5A and Figure 5B 1 and 2 are respectively a perspective view and a cross-sectional view of the antenna device 20 of the second embodiment. Figure 1 A. Figure 1 B), the outwardly facing surface of the second portion 22 is flat, but in the second embodiment, a second step 22S extending in a direction DI parallel to the intersection line is provided on the outwardly facing surface of the second portion 22. With the second step 22S as a boundary, the thickness of the portion of the second portion 22 on the second extension portion 22E side is thinner than the thickness of other portions. The second step 22S may be arranged at the boundary between the second extension portion 22E and the second adhesive portion 22M, may be arranged at the second extension portion 22E, or may be arranged at the second adhesive portion 22M.

[0096] A plurality of second radiating elements 32 are arranged in a relatively thick region separated by the second step 22S on the outer surface of the second portion 22. A portion of the second ground conductor 36 is also arranged on the tip side of the second extension portion 22E relative to the second step 22S.

[0097] Figure 6 The bent portion 23C ( Figure 5A , Figure 5B ) is a cross-sectional view of a state in which the 2D image is deformed into a flat plate. Figure 6 In the figure, the shape of the bent portion 23C is indicated by a dotted line. The top surface of the first extension portion 21E of the first portion 21 is opposite to the second step 22S of the second portion 22, and the top surface of the second extension portion 22E of the second portion 22 is opposite to the first step 21S of the first portion 21. When looking down at the first surface 23P, the portion of the first portion 21 that is closer to the top side than the first step 21S and the portion of the second portion 22 that is closer to the top side than the second step 22S overlap each other. The first portion 21 and the second portion 22 do not interfere with each other in space as in the first embodiment. Therefore, the antenna device 20 of the second embodiment can be used in the same manner as in the first embodiment. Figure 2A , Figure 2B as well as Figure 2C The antenna device 20 of the first embodiment shown in the figure can be manufactured by the same method as that of manufacturing the antenna device 20 of the first embodiment shown in the figure.

[0098] Next, the excellent effects of the second embodiment will be described.

[0099] In the first embodiment ( Figure 1 A. Figure 1 B), the thickness of the second portion 22 cannot be made thicker than the height of the first step 21S of the first portion 21. In contrast, in the second embodiment, the second step 22S is formed on the outer surface of the second portion 22, so that the thickness of the second portion 22 can be made thicker than the height of the first step 21S. If the second portion 22 is thicker, the interval between the second radiating element 32 and the second ground conductor 36 can be increased. As a result, the patch antenna composed of the second radiating element 32 and the second ground conductor 36 can be made broadband.

[0100] Furthermore, by arranging a part of the second ground conductor 36 in the second extension portion 22E, it is possible to increase the area of ​​the second ground conductor 36. Thus, the gain of the patch antenna formed of the second radiating element 32 and the second ground conductor 36 can be increased.

[0101] Next, refer to Fig. 7A , Figure 7B as well as Figure 7C , another example of the manufacturing method of the antenna device of the second embodiment is described. Fig. 7A , Figure 7B as well as Figure 7C FIG. 1 is a cross-sectional view of the antenna device of the second embodiment at an intermediate stage of manufacturing. Figure 2A As shown in FIG. 1 , the first part 21 and the second part 22 are respectively manufactured. In contrast, in the present manufacturing method, as Fig. 7A As shown, the first portion 21 and the second portion 22 are integrally manufactured.

[0102] like Fig. 7A As shown in FIG. 1 , when the first part 21 and the second part 22 are integrally manufactured, a structure 25 that facilitates the separation of the first part 21 and the second part 22 is formed at the interface between the portion of the first part 21 closer to the top of the first step 21S and the portion of the second part 22 closer to the top of the second step 22S. Furthermore, a groove is formed at the first step 21S and the second step 22S to separate the first part 21 and the second part 22. The groove can be formed by, for example, laser processing or the like.

[0103] like Figure 7B As shown, the first part 21 and the second part 22 integrated via the easily peelable structure 25 are bonded to the first surface 23P of the connecting part 23. At this time, the first part 21 and the second part 22 are not bonded in the region of the connecting part 23 to be the curved portion 23C.

[0104] Then, if Figure 7C As shown in FIG. 2 , the bent portion 23C of the connecting portion 23 is bent. Figure 7C In FIG. 1 , the shape of the antenna device after bending is indicated by a dotted line. At this time, the first portion 21 is peeled off from the second portion 22 at the portion of the structure 25 that is easy to peel off.

[0105] like Fig. 7A , Figure 7B as well as Figure 7C As shown in FIG. 1 , it is also possible to adopt a method in which the first portion 21 and the second portion 22 are integrally manufactured and then separated.

[0106] [Third embodiment]

[0107] Next, refer to Figure 8 , Fig.9A as well as Fig. 9B The antenna device of the third embodiment will be described below. Figure 5A to Figure 6 The description of the common structure of the antenna device of the second embodiment will be omitted.

[0108] Figure 8 2 is a cross-sectional view of the antenna device 20 of the third embodiment. Figure 5A , Figure 5B ), the first part 21 and the second part 22 are bonded to the connecting part 23 by solder or the like. In contrast, in the third embodiment, the first part 21, the second part 22, and the connecting part 23 are integrally formed of the same material. Figure 8 In FIG. 2 , a virtual interface 26 between the first portion 21 and the connection portion 23 and a virtual interface 27 between the second portion 22 and the connection portion 23 are indicated by dotted lines. The first portion 21 , the second portion 22 , and the connection portion 23 can be made of, for example, a liquid crystal polymer.

[0109] Next, refer to Fig.9A and Fig. 9B , a method for manufacturing the antenna device 20 according to the third embodiment is described. Fig.9A and Fig. 9B It is a cross-sectional view of the antenna device 20 of the third embodiment at an intermediate stage of manufacturing.

[0110] like Fig.9A As shown in FIG. 1 , a laminated structure including the first portion 21, the second portion 22, the connecting portion 23, the first radiating element 31, the second radiating element 32, the first ground conductor 35, and the second ground conductor 36 is formed. At this time, the interface between the portion that will become the bent portion 23C when the antenna device 20 is completed and the portion that will become the first portion 21 and the second portion 22 is set to a structure 28 that is easier to peel than the virtual interfaces 26 and 27 between the connecting portion 23 and the first portion 21 and the second portion 22. In addition, the interface between the first portion 21 and the second portion 22 is set to a structure 25 that is easier to peel. In addition, the portions that will become the first step 21S and the second step 22S are also set to a structure that is easier to separate from each other.

[0111] like Fig. 9BAs shown in FIG. 2 , the connecting portion 23 is bent. At this time, peeling occurs at the portions of the structures 25 and 28 that are easy to peel, and the bent portion 23C is bent. Peeling does not occur at the imaginary interfaces 26 and 27. The total thickness of the first portion 21 and the connecting portion 23 and the total thickness of the second portion 22 and the connecting portion 23 are thicker than the thickness of the bent portion 23C, so the rigidity of the portion where the imaginary interfaces 26 and 27 are located is higher than the rigidity of the bent portion 23C. Therefore, the first portion 21 and the second portion 22 maintain a substantially flat plate shape even after the bent portion 23C is bent.

[0112] Next, the excellent effects of the third embodiment will be described.

[0113] In the third embodiment, as in the second embodiment, the patch antenna composed of the second radiating element 32 and the second ground conductor 36 can be made broadband, and the gain of the patch antenna composed of the second radiating element 32 and the second ground conductor 36 can be increased. In addition, in the third embodiment, there is no step of bonding the first portion 21 to the connecting portion 23 and no step of bonding the second portion 22 to the connecting portion 23. Therefore, the number of steps can be reduced.

[0114] [Fourth embodiment]

[0115] Next, refer to Fig.10 The antenna device of the fourth embodiment is described below. Figure 5A , Figure 5B as well as Figure 6 The description of the common structure of the antenna device of the second embodiment will be omitted.

[0116] Fig.10 2 is a cross-sectional view of the antenna device 20 of the fourth embodiment. Figure 1 B), the first ground conductor 35 disposed in the first portion 21 is composed of a flat conductor layer. In contrast, in the fourth embodiment, the first ground conductor 35 is disposed on the inner surface of the first portion 21 so as to extend from one side of the first step 21S through the first step 21S to the other side. That is, the first ground conductor 35 includes a stepped portion. The first radiating element 31 and the stepped first ground conductor 35 constitute a patch antenna.

[0117] The first ground conductor 35 is bonded by solder to a first ground pad 38 disposed on the first surface 23P of the first flat plate portion 23A of the connection part 23 .

[0118] Next, the excellent effects of the fourth embodiment will be described.

[0119] In the fourth embodiment, in a part of the first radiation element 31, the Figure 1B) compared to the structure, the interval between the first radiating element 31 and the first ground conductor 35 is increased. As a result, the patch antenna composed of the first radiating element 31 and the first ground conductor 35 can be widened in bandwidth.

[0120] [Fifth embodiment]

[0121] Next, refer to Fig.11 The antenna device of the fifth embodiment is described below. Figure 5A , Figure 5B as well as Figure 6 The description of the common structure of the antenna device of the second embodiment will be omitted.

[0122] Fig.11 2 is a cross-sectional view of the antenna device 20 of the fifth embodiment. In the fifth embodiment, in addition to the antenna device ( Figure 5A , Figure 5B ), a plurality of third radiating elements 33 are arranged on the second portion 22. A second ground conductor 36 is arranged on the inner surface of the second portion 22. Each of the third radiating elements 33 is arranged at a position including one second radiating element 32 when the outer surface of the second portion 22 is viewed from above. In addition, in the thickness direction of the second portion 22, the third radiating element 33 is arranged between the second ground conductor 36 and the second radiating element 32.

[0123] A portion of the third radiating element 33 is disposed on the outer surface of the relatively thin portion closer to the tip side than the second step 22S, and the other portion is disposed in the inner layer of the second portion 22. Furthermore, the third radiating element 33 extends to the second extension portion 22E. The second ground conductor 36 and the third radiating element 33 constitute a patch antenna. In addition, the third radiating element 33 also functions as a ground conductor for the second radiating element 32.

[0124] The resonance frequency of the third radiation element 33 is lower than the resonance frequency of the second radiation element 32. As an example, the resonance frequency of the third radiation element 33 is 28 GHz, and the resonance frequency of the second radiation element 32 is 39 GHz.

[0125] Next, the excellent effects of the fifth embodiment will be described.

[0126] In the fifth embodiment, two types of radiating elements having different resonance frequencies are arranged in the second portion 22. Therefore, two frequency bands can be covered by the radiating element provided in the second portion 22. The third radiating element 33 is arranged so as to extend to the second extension portion 22E, so that the area of ​​the third radiating element 33 can be increased. Furthermore, when the antenna device 20 is arranged at a corner of the housing, the third radiating element 33 can be arranged close to the corner of the housing.

[0127] [Sixth embodiment]

[0128] Next, refer to Fig. 12A and Fig. 12B , the antenna device of the sixth embodiment is described. Figure 5A , Figure 5B as well as Figure 6 The description of the common structure of the antenna device of the second embodiment will be omitted.

[0129] Fig. 12A 2 is a cross-sectional view of the antenna device 20 according to the sixth embodiment. Figure 5A , Figure 5B ), the plurality of second radiating elements 32 are arranged on the outer surface of the relatively thick portion of the second portion 22, and are not arranged on the portion closer to the tip side than the second step 22S. In contrast, in the sixth embodiment, the plurality of second radiating elements 32 are arranged on the outer surface of the second portion 22 so as to straddle the second step 22S. The second radiating element 32 and the second ground conductor 36 constitute a patch antenna.

[0130] Fig. 12B : is a three-dimensional view of a second radiation element 32. The second radiation element 32 includes a portion 32H arranged on the surface outside the relatively thick portion, a portion 32L arranged on the surface outside the relatively thin portion, and a portion 32C arranged on the surface constituting the second step 22S and connecting the two portions 32H and 32L, with the second step 22S as a boundary. A plurality of connected portions 32C are arranged at intervals in the direction in which the second step 22S extends. Alternatively, the connected portion 32C may be continuously arranged over the entire region of the two portions 32H and 32L in the direction in which the second step 22S extends.

[0131] Next, the excellent effects of the sixth embodiment will be described.

[0132] In the sixth embodiment, the second radiating element 32 is also arranged at the tip side of the second step 22S. Therefore, when the antenna device 20 is arranged at the corner of the casing, the second radiating element 32 can be placed close to the corner of the casing.

[0133] [Seventh embodiment]

[0134] Next, refer to Fig.13 The antenna device of the seventh embodiment is described below. Figure 5A , Figure 5B as well as Figure 6 The description of the common structure of the antenna device of the second embodiment will be omitted.

[0135] Fig.132 is a cross-sectional view of the antenna device 20 of the seventh embodiment. Figure 5B ), the first ground conductor 35 arranged in the first portion 21 and the second ground conductor 36 arranged in the second portion 22 are not electrically connected. In contrast, in the seventh embodiment, the first ground conductor 35 and the second ground conductor 36 are electrically connected to each other via a ground connection wiring 37 arranged in the connection portion 23.

[0136] More specifically, a first grounding pad 38 and a second grounding pad 39 are arranged on the first surface 23P of the first flat plate portion 23A and the second flat plate portion 23B of the connection portion 23, respectively. The first grounding pad 38 and the second grounding pad 39 are connected to each other via a ground connection wiring 37 arranged in the bent portion 23C. A first grounding conductor 35 is arranged on the inner surface of the first bonding portion 21M of the first portion 21, and a second grounding conductor 36 is arranged on the inner surface of the second bonding portion 22M of the second portion 22. The second grounding conductor 36 is further arranged to extend to the inner surface of the second extension portion 22E. The first grounding conductor 35 and the second grounding conductor 36 are connected to the first grounding pad 38 and the second grounding pad 39, respectively, by solder (not shown).

[0137] Next, the excellent effects of the seventh embodiment are described.

[0138] In the seventh embodiment, the second ground conductor 36 is connected to the first ground conductor 35, and the second ground conductor 36 is extended to the second extension portion 22E and arranged close to the first radiating element 31. Therefore, the second ground conductor 36 can work as a ground for the first radiating element 31. The ground area of ​​the first radiating element 31 is substantially increased, so the gain of the patch antenna including the first radiating element 31 can be improved.

[0139] [Eighth Embodiment]

[0140] Next, refer to Fig.14 and Fig.15 , a communication device according to an eighth embodiment will be described. The communication device according to the eighth embodiment is equipped with an antenna device according to any one of the first to seventh embodiments.

[0141] Fig.14 is a block diagram of a communication device according to an eighth embodiment, Fig.15 It is a three-dimensional diagram of the communication device of the eighth embodiment.

[0142] The communication device of the eighth embodiment includes a baseband integrated circuit (BBIC) 80, a high frequency integrated circuit (RFIC) 60, and an antenna device 20. As the antenna device 20, the antenna device 20 of any one of the first to seventh embodiments is used. The antenna device 20 includes a plurality of first radiating elements 31 and a plurality of second radiating elements 32. As the antenna device 20, in the case of using the antenna device 20 ( Fig.11 ), the antenna device 20 further includes a plurality of third radiation elements 33 ( Fig.11 ).

[0143] like Fig.15 As shown, the high-frequency integrated circuit 60 is mounted on the inner surface of the second flat plate portion 23B of the connecting portion 23. The antenna device 20 and the high-frequency integrated circuit 60 are mounted on a substrate 85 such as a motherboard. At this time, the inner surface of the curved portion 23C faces the edge where the component mounting surface and one end surface of the substrate 85 intersect. For example, the inner surface of the second portion 22 of the antenna device 20 faces the component mounting surface of the substrate 85 via the connecting portion 23 and the high-frequency integrated circuit 60, and the inner surface of the first portion 21 faces one end surface of the substrate 85 via the connecting portion 23.

[0144] like Fig.14 As shown, the intermediate frequency signal is transmitted and received between the baseband integrated circuit 80 and the high frequency integrated circuit 60 via the wiring 81. Fig.15 As shown, the baseband integrated circuit 80 is mounted on the component mounting surface of the substrate 85 .

[0145] The high frequency integrated circuit 60 includes an intermediate frequency amplifier 61, an up / down conversion mixer 62, a transmission / reception switch 63, a power divider 64, a plurality of phase shifters 65, a plurality of attenuators 66, a plurality of transmission / reception switches 67, a plurality of power amplifiers 68, a plurality of low noise amplifiers 69, and a plurality of transmission / reception switches 70. The plurality of transmission / reception switches 70 are connected to the plurality of first radiating elements 31 and the second radiating elements 32 via the power supply lines 34, respectively.

[0146] First, the transmission function is described. An intermediate frequency signal is input from the baseband integrated circuit 80 to the up / down conversion mixer 62 via the intermediate frequency amplifier 61. The up / down conversion mixer 62 up-converts the intermediate frequency signal to generate a high frequency signal. The generated high frequency signal is input to the power divider 64 via the transmit / receive switch 63. The high frequency signal distributed by the power divider 64 is input to the first radiating element 31 and the second radiating element 32 via the phase shifter 65, the attenuator 66, the transmit / receive switch 67, the power amplifier 68, the transmit / receive switch 70, and the power supply line 34.

[0147] Next, the receiving function is described. The high frequency signals received by the first radiating element 31 and the second radiating element 32 are input to the power divider 64 via the power supply line 34, the transmit / receive switch 70, the low noise amplifier 69, the transmit / receive switch 67, the attenuator 66, and the phase shifter 65. The high frequency signal synthesized by the power divider 64 is input to the up / down conversion mixer 62 via the transmit / receive switch 63. The up / down conversion mixer 62 down-converts the high frequency signal to generate an intermediate frequency signal. The generated intermediate frequency signal is input to the baseband integrated circuit 80 via the intermediate frequency amplifier 61. In addition, the up / down conversion mixer 62 may also adopt a direct conversion method of directly down-converting the high frequency signal into a baseband signal.

[0148] Next, the excellent effects of the eighth embodiment are described.

[0149] As the antenna device 20 included in the communication device of the eighth embodiment, the antenna device 20 of any one of the first to seventh embodiments is used, so that the substrate 85 ( Fig.15 ) is facing a larger range of the direction in which the component mounting surface faces and the direction in which one end face faces. In addition, by arranging the antenna device 20 at the corner of the housing, the space inside the housing, especially the space at the corner, can be effectively utilized.

[0150] [Ninth embodiment]

[0151] Next, refer to Fig.16 and Fig.17 The antenna device of the ninth embodiment is described below. Figure 1 A~ Figure 2C The description of the common structure of the antenna device of the first embodiment will be omitted.

[0152] Fig.16 2 is a cross-sectional view of the antenna device 20 of the ninth embodiment. Figure 1 A. Figure 1 B), by providing the first step 21S on the inner surface of the first portion 21, the portion closer to the top end than the first step 21S is thinner than the other portions. In contrast, in the ninth embodiment, the inner surface of the first portion 21 is flat, and the thickness of the first portion 21 is uniform. The thickness of the second portion 22 is also uniform.

[0153] The first portion 21 and the second portion 22 respectively include a first extension portion 21E and a second extension portion 22E as in the first embodiment, but the total length of the first extension portion 21E and the second extension portion 22E in the extension direction is shorter than that of the antenna device 20 in the first embodiment.

[0154] Fig.172 is a cross-sectional view of a state where the bent portion 23C is deformed into a flat plate. The state before deformation is indicated by a dotted line. When the bent portion 23C is deformed into a flat plate, the first portion 21 and the second portion 22 do not interfere with each other in space, as in the antenna device 20 of the first embodiment. When the first surface 23P of the connecting portion 23 formed into a flat plate is viewed from above, in the first embodiment ( Figure 2C ), the first part 21 and the second part 22 partially overlap, but in the ninth embodiment, the two do not overlap. That is, the surface of the top end of the first part 21 and the surface of the top end of the second part 22 are opposite to each other.

[0155] Next, the excellent effects of the ninth embodiment are described.

[0156] In the ninth embodiment, as in the first embodiment, it is possible to Fig.16 The plurality of first radiating elements 31 and the plurality of second radiating elements 32 are arranged at the same position in a direction perpendicular to the paper surface of the antenna. In addition, the plurality of first radiating elements 31 and the plurality of second radiating elements 32 can be arranged at narrow intervals. In addition, compared with an antenna device that does not have the first extension portion 21E and the second extension portion 22E, the first radiating element 31 and the second radiating element 32 can be arranged closer to the corner of the housing.

[0157] The above-mentioned embodiments are examples, and it is self-evident that partial substitution or combination of the structures shown in different embodiments can be performed. The same effect achieved by the same structure of multiple embodiments is not mentioned repeatedly in each embodiment. Moreover, the present invention is not limited to the above-mentioned embodiments. For example, it is obvious to those skilled in the art that various changes, improvements, combinations, etc. can be performed.

[0158] Description of Reference Numerals

[0159] 20. Antenna device; 21. First part; 21E. First extension part; 21F. Surface intersecting with thickness direction; 21M. First bonding part; 21R. First reference plane; 21S. First step; 22. Second part; 22E. Second extension part; 22F. Surface intersecting with thickness direction; 22M. Second bonding part; 22R. Second reference plane; 22S. Second step; 23. Connecting part; 23A. First flat part; 23B. Second flat part; 23C. Bend; 23P. First surface; 23S. Second surface; 25. Easy-to-peel structure; 26. Imaginary interface between first part and connecting part; 27. Imaginary interface between second part and connecting part; 28. Easy-to-peel structure ; 31. The first radiating element; 32. The second radiating element; 32C, 32H, 32L, part of the second radiating element; 33. The third radiating element; 34. The power supply line; 35. The first grounding conductor; 36. The second grounding conductor; 37. The ground connection wiring; 38. The first grounding pad; 39. The second grounding pad; 60. The high-frequency integrated circuit (RFIC); 61. The intermediate frequency amplifier; 62. The mixer for up and down conversion; 63. The transmit and receive switching switch; 64. The power divider; 65. The phase shifter; 66. The attenuator; 67. The transmit and receive switching switch; 68. The power amplifier; 69. The low-noise amplifier; 70. The transmit and receive switching switch; 80. The baseband integrated circuit; 81. The wiring; 85. The substrate.

Claims

1. An antenna device, wherein: The antenna device comprises: A connecting portion having a first surface and a second surface on the side opposite to the first surface; a first portion and a second portion connected to the first surface of the connecting portion; a first radiation element disposed in the first portion; and a second radiation element, which is arranged in the second portion, The connecting part comprises: The first flat plate portion; a bent portion extending from the first flat plate portion and bent so that the first surface is located outside; and a second flat plate portion further extending from the bent portion, The first portion is connected to the first surface of the first flat portion, and includes a first extension portion extending from a boundary between the first flat portion and the curved portion toward the curved portion. The second portion is connected to the first surface of the second flat plate portion and includes a second extension portion extending from a boundary between the second flat plate portion and the curved portion toward the curved portion. At least a portion of the first extension portion and at least a portion of the second extension portion occupy the same position in a first direction parallel to an intersection line of a plane along which the first flat plate portion is located and a plane along which the second flat plate portion is located. At least a portion of the first radiating element is disposed on the first extending portion, A first distance in a direction perpendicular to the first reference plane from a first surface of the first flat plate portion that is perpendicular to the first direction and parallel to the first direction to a surface that intersects the thickness direction of the first extension portion, a second distance in a direction perpendicular to the second reference plane from a second reference plane that is perpendicular to the first surface of the second flat plate portion and parallel to the first direction to a surface that intersects the thickness direction of the second extension portion, and a third distance that is the shortest distance from the first reference plane to the second reference plane via a path along the first surface have the following relationship: a sum of the first distance and the second distance at positions at the same height from the first surface is less than or equal to the third distance, A sum of a maximum value of the first distance and a maximum value of the second distance is longer than the third distance.

2. The antenna device according to claim 1, wherein: A first step is provided on a surface of the first portion facing the connecting portion, and a portion of the first portion closer to the tip of the first extending portion than the first step is thinner than a portion connected to the first flat plate portion.

3. The antenna device according to claim 2, wherein: The thickness of the second extending portion is equal to or thinner than the height of the first step.

4. The antenna device according to any one of claims 1 to 3, wherein: The antenna device further includes a first ground conductor disposed on the first portion. The first radiating element and the first ground conductor constitute a patch antenna.

5. The antenna device according to any one of claims 1 to 4, wherein: At least a portion of the second radiating element is disposed on the second extending portion.

6. The antenna device according to claim 2 or 3, wherein: A second step is provided on a surface of the second portion facing the side opposite to the connecting portion, and a portion of the second portion closer to the tip of the second extending portion than the second step is thinner than a portion connected to the second flat plate portion.

7. The antenna device according to claim 6, wherein: The antenna device further includes a second ground conductor disposed on the second portion. The second radiating element is arranged at a portion on the side opposite to the second extending portion with the second step as a boundary. A portion of the second ground conductor is disposed on the second extension portion, and the second radiating element and the second ground conductor constitute a patch antenna.

8. The antenna device according to claim 4, wherein: The antenna device also includes: a second grounding conductor disposed at the second portion; and a ground connection wiring arranged at the connection portion and connecting the first ground conductor and the second ground conductor to each other, The second radiating element and the second ground conductor constitute a patch antenna.

9. The antenna device according to any one of claims 1 to 8, wherein: The first portion, the second portion, and the connecting portion are formed of the same material.

10. The antenna device according to any one of claims 1 to 8, wherein: The first portion, the second portion, and the connecting portion are formed of different members.

11. A communication device, wherein: The communication device comprises: The antenna device according to any one of claims 1 to 10; and A circuit supplies a high-frequency signal to the first radiating element and the second radiating element.

12. A method for manufacturing an antenna device, wherein: A first radiation element and a second radiation element are formed in the first part and the second part, respectively. The first part and the second part are bonded to a first surface which is one surface of a flexible substrate in a positional relationship that at least a portion of the first radiating element overlaps with the second part when the first surface is viewed from above, and the portion where the first part and the second part overlap is not bonded to the substrate, A portion of the substrate that is not bonded to the first portion and the second portion is bent in a direction in which the first surface is located outside, and a portion where the first portion and the second portion overlap each other is suspended from the bent portion of the substrate.

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