Antenna device

Abstract

To provide an antenna device that can suppress external electrical influences.SOLUTION: An antenna device includes an antenna element, a substrate, a front feed line and a back feed line formed on the substrate and supplying power to the antenna element, a first ground plate and a second ground plate, and a coaxial cable including a center conductor and an outer conductor. The antenna device includes a connector attached to a side surface of the substrate. The connector includes a first conductor portion electrically connected to the front feed line and the back feed line and electrically connected to the center conductor, and a second conductor portion electrically connected to the first ground plate and the second ground plate and electrically connected to the outer conductor.SELECTED DRAWING: Figure 3

Description

[Technical field]

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

[0002] Patent Document 1 discloses an antenna device. The antenna device includes an antenna element and a substrate. A surface feed line is formed on the surface of the substrate. A back feed line is formed on the back of the substrate. The surface feed line and the back feed line supply power to the antenna element.

[0003] The antenna device includes a first ground plate and a second ground plate, the first ground plate and the second ground plate facing each other with a substrate interposed therebetween, and a coaxial cable, the coaxial cable including a central conductor and an outer conductor.

[0004] The coaxial cable extends along the surface of the first ground plate opposite the substrate. The central conductor is exposed at the tip of the coaxial cable. A central conductor connecting fitting is attached to the exposed central conductor. The central conductor connecting fitting passes through an opening provided in the first ground plate and reaches the substrate. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2017-34493 A Summary of the Invention [Problem to be solved by the invention]

[0006] In the antenna device described in Patent Document 1, the central conductor is exposed. When the central conductor is exposed, it is susceptible to electrical influences from the outside. In one aspect of the present disclosure, it is preferable to provide an antenna device that can suppress electrical influences from the outside. [Means for solving the problem]

[0007] One aspect of the present disclosure is an antenna device comprising: an antenna element; a substrate; a surface feed line formed on a surface of the substrate and supplying power to the antenna element; a back feed line formed on a back surface of the substrate and supplying power to the antenna element; first and second ground plates facing each other across the substrate; and a coaxial cable having a center conductor and an outer conductor.

[0008] The antenna device includes a connector attached to a side surface of the substrate, the connector including a first conductor portion electrically connected to the front feed line and the rear feed line and electrically connected to the central conductor, and a second conductor portion electrically connected to the first ground plate and the second ground plate and electrically connected to the external conductor.

[0009] In the antenna device according to one aspect of the present disclosure, the central conductor is unlikely to be exposed, which makes it possible to suppress external electrical influences. [Brief description of the drawings]

[0010] [Figure 1] 1 is a side cross-sectional view showing the overall configuration of an antenna device. [Diagram 2] 2 is a perspective view illustrating a configuration of the antenna device excluding a cover and a cap. FIG. [Diagram 3] 1 is a cross-sectional view showing a configuration of a connector and its surroundings in a first embodiment. [Figure 4] FIG. 2 is a perspective view illustrating a configuration of a connector according to the first embodiment. [Diagram 5] FIG. 2 is a perspective view illustrating a configuration of a connector according to the first embodiment. [Figure 6] 11 is a cross-sectional view showing a configuration of a connector and its surroundings in a second embodiment. FIG. [Figure 7] FIG. 11 is a perspective view illustrating a configuration of a connector according to a second embodiment. [Figure 8] FIG. 11 is a perspective view illustrating a configuration of a connector according to a second embodiment. [Figure 9] FIG. 11 is a cross-sectional view showing a configuration of a connector and its surroundings in a third embodiment. [Figure 10] FIG. 11 is a perspective view illustrating a configuration of a connector according to a third embodiment. [Figure 11] FIG. 11 is a perspective view illustrating a configuration of a connector according to a third embodiment. [Figure 12] FIG. 11 is a perspective view illustrating a configuration of a connector in a separated state in a third embodiment. [Figure 13] FIG. 11 is a perspective view illustrating a configuration of a connector in a separated state in a third embodiment. [Figure 14] FIG. 13 is a cross-sectional view showing a configuration of a connector and its surroundings in a fourth embodiment. [Figure 15] FIG. 13 is a perspective view illustrating a configuration of a connector in a fourth embodiment. [Figure 16] FIG. 13 is a perspective view illustrating a configuration of a connector in a fourth embodiment. [Figure 17] FIG. 13 is a perspective view illustrating a configuration of a connector in a separated state in a fourth embodiment. [Figure 18] FIG. 13 is a perspective view illustrating a configuration of a connector in a separated state in a fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Exemplary embodiments of the present disclosure will now be described with reference to the drawings. First Embodiment 1. Overall configuration of antenna device 1 The overall configuration of the antenna device 1 will be described with reference to Figures 1 and 2. As shown in Figure 1, the antenna device 1 includes a cover 3. The cover 3 has a substantially cylindrical shape.

[0012] 2, the antenna device 1 includes a substrate 5, a first ground plate 7, and a second ground plate 9. The substrate 5, the first ground plate 7, and the second ground plate 9 are each housed inside the cover 3. The substrate 5, the first ground plate 7, and the second ground plate 9 each have a rectangular shape and extend along the longitudinal direction of the cover 3. The first ground plate 7 and the second ground plate 9 face each other with the substrate 5 in between.

[0013] The substrate 5 is made of a dielectric material. As shown in FIG. 1, a surface feed line 11A is formed on a surface 5A of the substrate 5. A back feed line 11B is formed on a back surface 5B of the substrate 5. The surface 5A and the back surface 5B are each the main surfaces of a plate. The back surface 5B is the surface opposite to the surface 5A. As shown in FIG. 1 and FIG. 2, the antenna device 1 includes an antenna element 13. The antenna element 13 is accommodated inside the cover 3. The surface feed line 11A and the back feed line 11B supply power to the antenna element 13.

[0014] As shown in Figs. 1 and 2, the antenna device 1 includes a cap 14, an external connector 15, a connector 17, and a coaxial cable with a plug 19. The cap 14 is provided at an end of the cover 3 in the longitudinal direction. The external connector 15 is attached to the cap 14. The connector 17 is attached to a side surface 5C of the substrate 5. The side surface 5C is adjacent to both the front surface 5A and the back surface 5B and is a surface sandwiched between them. The coaxial cable with a plug 19 connects the external connector 15 and the connector 17. A plug 43 included in the coaxial cable with a plug 19 is connected to the connector 17.

[0015] 2. Connector 17 and its surrounding structure The connector 17 and its surrounding structure will be described with reference to Figures 3 to 5. The connector 17 is made of a conductive material, except for an insulator 35, which will be described later. Examples of conductive materials include metals.

[0016] As shown in Figures 3 to 5, the connector 17 has a hollow cylindrical main body 21. The direction parallel to the axial direction of the main body 21 is the Z1 direction. The opposite direction to the Z1 direction is the Z2 direction. The radial direction of the main body 21 is the X1 direction. The opposite direction to the X1 direction is the X2 direction. The direction perpendicular to both the X1 direction and the Z1 direction is the Y1 direction. The opposite direction to the Y1 direction is the Y2 direction. The outer diameter of the main body 21 is smaller on the Z1 direction side than on the Z2 direction side.

[0017] As shown in FIG. 4 and FIG. 5, the connector 17 includes a first fixing portion 23. The first fixing portion 23 is provided on the X1 direction side of the outer circumferential surface of the main body 21. The first fixing portion 23 extends from the outer circumferential surface of the main body 21 in the X1 direction and further extends in the Z2 direction. When viewed from the Y1 direction, the first fixing portion 23 has an L-shape. The first fixing portion 23 protrudes in the Z2 direction beyond the main body 21. The first fixing portion 23 includes a groove 23A at an end portion on the Z2 direction side. The groove 23A penetrates the first fixing portion 23 in the X1 and X2 directions. The groove 23A extends along the Z1 and Z2 directions. The groove 23A is on the Z2 direction side beyond the main body 21.

[0018] As shown in FIG. 4 and FIG. 5, the connector 17 includes a second fixing portion 25. The second fixing portion 25 is provided on the X2 direction side of the outer circumferential surface of the main body 21. The second fixing portion 25 extends from the outer circumferential surface of the main body 21 in the X2 direction and further extends in the Z2 direction. When viewed from the Y1 direction, the second fixing portion 25 has an L-shape. The second fixing portion 25 protrudes in the Z2 direction beyond the main body 21. The second fixing portion 25 includes a groove 25A at an end portion on the Z2 direction side. The groove 25A penetrates the second fixing portion 25 in the X1 and X2 directions. The groove 25A extends along the Z1 and Z2 directions. The groove 25A is located on the Z2 direction side beyond the main body 21.

[0019] As shown in Figs. 3 to 5, the connector 17 includes a third fixing portion 27. The third fixing portion 27 is provided on a portion of the outer circumferential surface of the main body 21 on the Y1 direction side. The third fixing portion 27 extends in the Y1 direction from the outer circumferential surface of the main body 21 and further extends in the Z2 direction. When viewed from the X1 direction, the third fixing portion 27 has an L-shape. The third fixing portion 27 protrudes in the Z2 direction further than the main body 21.

[0020] As shown in Figs. 3 to 5, the connector 17 includes a fourth fixing portion 29. The fourth fixing portion 29 is provided on a portion of the outer circumferential surface of the main body 21 on the Y2 direction side. The fourth fixing portion 29 extends in the Y2 direction from the outer circumferential surface of the main body 21 and further extends in the Z2 direction. When viewed from the X1 direction, the fourth fixing portion 29 has an L-shape. The fourth fixing portion 29 protrudes in the Z2 direction further than the main body 21.

[0021] As shown in Figs. 3 to 5, the connector 17 includes a center pin 31. The center pin 31 is a linear member. The center pin 31 is housed inside the main body 21. The axial direction of the center pin 31 is parallel to the Z1 and Z2 directions. The central axis of the main body 21 and the central axis of the center pin 31 coincide with each other.

[0022] As shown in FIG. 3, the position of the tip of the center pin 31 in the Z1 direction is approximately the same as the position of the tip of the main body 21. The shape of the tip of the center pin 31 in the Z1 direction is tapered. The center pin 31 protrudes in the Z2 direction further than the main body 21. The portion of the center pin 31 on the Z2 direction side has a larger diameter than the Z1 direction side. A groove 33 is formed in the end of the center pin 31 on the Z2 direction side. The groove 33 penetrates the center pin 31 in the X1 and X2 directions. The groove 33 extends along the Z1 and Z2 directions. The groove 33 is located on the Z2 direction side of the main body 21.

[0023] As shown in Figs. 3 and 4, the connector 17 includes an insulator 35. The insulator 35 is provided inside the main body 21. The insulator 35 fills the space between the inner circumferential surface of the main body 21 and the center pin 31. The insulator 35 electrically insulates the main body 21 from the center pin 31. The insulator 35 is not provided on the Z1 direction side of the inside of the main body 21.

[0024] 1 to 3, the connector 17 is attached to a side surface 5C of the substrate 5. As shown in Fig. 3, the Z1 and Z2 directions are perpendicular to the thickness direction of the substrate 5. The Y1 and Y2 directions are parallel to the thickness direction of the substrate 5.

[0025] 3, the portion of the substrate 5 on the side of the side surface 5C is inserted into the groove 33. The portion of the center pin 31 around the groove 33 on the side of the front surface 5A is electrically connected to the front surface feed line 11A by the soldered portion 32A. The portion of the center pin 31 around the groove 33 on the side of the back surface 5B is electrically connected to the back surface feed line 11B by the soldered portion 32B.

[0026] 1 and 2, first fixed portion 23 and second fixed portion 25 are fixed to substrate 5. As shown in Fig. 3, a portion of substrate 5 on the side of side surface 5C is inserted into groove 23A of first fixed portion 23. A portion of substrate 5 on the side of side surface 5C is inserted into groove 25A of second fixed portion 25. Side surface 5C abuts against the rear end faces of groove 33, groove 23A, and groove 25A.

[0027] 3, the Z2 direction side surfaces of the main body 21 and the third fixed portion 27 abut against a side surface of the first ground plate 7. The Z2 direction side surfaces of the main body 21 and the fourth fixed portion 29 abut against a side surface of the second ground plate 9.

[0028] 3, the third fixing portion 27 abuts against the outer surface of the first ground plate 7 (i.e., the surface on the Y1 direction side). The fourth fixing portion 29 abuts against the outer surface of the second ground plate 9 (i.e., the surface on the Y2 direction side). The third fixing portion 27 and the first ground plate 7 are electrically connected by soldering portion 40A. The fourth fixing portion 29 and the second ground plate 9 are electrically connected by soldering portion 40B.

[0029] 3, the plug-attached coaxial cable 19 includes a coaxial cable 41 and a plug 43. The coaxial cable 41 has a similar configuration to known coaxial cables. The coaxial cable 41 includes a central conductor and an outer conductor.

[0030] The plug 43 is attached to the tip of the coaxial cable 41. The plug 43 is connectable to the connector 17. The plug 43 has a tip portion 45 that can be inserted into the inside of the portion of the body portion 21 on the Z1 direction side. The tip portion 45 is cylindrical in shape. A pin hole 47 is formed in the center of the tip portion 45. The pin hole 47 extends along the axial direction of the plug 43. An internal conductor layer 49 is formed on the inner peripheral surface of the pin hole 47. The internal conductor layer 49 is electrically connected to the central conductor of the coaxial cable 41.

[0031] An outer conductor layer 51 is formed on the outer circumferential surface of the tip portion 45. The outer conductor layer 51 is electrically connected to the outer conductor of the coaxial cable 41. The tip portion 45 includes an insulator 53. The insulator 53 electrically insulates the inner conductor layer 49 and the outer conductor layer 51 from each other.

[0032] When the plug 43 is connected to the connector 17, the tip portion 45 is inserted into the Z1 direction side of the main body 21. At this time, the center pin 31 is inserted into the pin hole 47 and electrically connected to the internal conductor layer 49. In addition, the external conductor layer 51 is electrically connected to the inner peripheral surface of the main body 21.

[0033] The center pin 31 corresponds to the first conductor portion. The center pin 31 is electrically connected to the front feed line 11A via the soldered portion 32A. The center pin 31 is also electrically connected to the back feed line 11B via the soldered portion 32B. When the plug 43 is connected to the connector 17, the center pin 31 is electrically connected to the central conductor of the coaxial cable 41 via the internal conductor layer 49.

[0034] The main body portion 21 corresponds to the second conductor portion. The main body portion 21 is electrically connected to the first ground plate 7 via the soldered portion 40A. The main body portion 21 is also electrically connected to the second ground plate 9 via the soldered portion 40B. When the plug 43 is connected to the connector 17, the main body portion 21 is electrically connected to the outer conductor of the coaxial cable 41 via the outer conductor layer 51.

[0035] The inner conductor layer 49 corresponds to the first plug conductor portion. The inner conductor layer 49 is electrically connected to the central conductor of the coaxial cable 41. The inner conductor layer 49 is also electrically connected to the center pin 31 when the plug 43 is connected to the connector 17.

[0036] The outer conductor layer 51 corresponds to the second plug conductor portion. The outer conductor layer 51 is electrically connected to the outer conductor of the coaxial cable 41. In addition, the outer conductor layer 51 is electrically connected to the main body portion 21 when the plug 43 is connected to the connector 17.

[0037] When the plug 43 is connected to the connector 17, the central conductor of the coaxial cable 41 is electrically connected to the front feed line 11A via the internal conductor layer 49, the center pin 31, and the soldered portion 32A. When the plug 43 is connected to the connector 17, the central conductor of the coaxial cable 41 is electrically connected to the back feed line 11B via the internal conductor layer 49, the center pin 31, and the soldered portion 32B.

[0038] When the plug 43 is connected to the connector 17, the outer conductor of the coaxial cable 41 is electrically connected to the first ground plate 7 via the outer conductor layer 51, the main body 21, and the soldered portion 40A. When the plug 43 is connected to the connector 17, the outer conductor of the coaxial cable 41 is electrically connected to the second ground plate 9 via the outer conductor layer 51, the main body 21, and the soldered portion 40B.

[0039] 3. Effects of the Antenna Device 1 (1A) By using the connector 17, the central conductor of the coaxial cable 41 can be electrically connected to the front feed line 11A and the back feed line 11B without exposing the central conductor of the coaxial cable 41. Therefore, electrical influences from the outside can be suppressed.

[0040] (1B) The coaxial cable 19 with plug has a plug 43. Therefore, the coaxial cable 19 with plug can be easily connected to and disconnected from the connector 17. <Second embodiment> 1. Differences from the first embodiment The second embodiment has a basic configuration similar to that of the first embodiment, and therefore differences will be described below. Note that the same reference numerals as those in the first embodiment indicate the same configuration, and the preceding description will be referred to.

[0041] In the above-described first embodiment, the center pin 31 is provided with the groove 33. In contrast, in the second embodiment, the center pin 31 is not provided with the groove 33, as shown in Figs. In the first embodiment described above, the first fixing portion 23 includes the groove 23A, and the second fixing portion 25 includes the groove 25A. In contrast, in the second embodiment, as shown in Figs. 6 to 8, the first fixing portion 23 includes a support plate 23B instead of the groove 23A. The support plate 23B is a plate-like member extending further in the Z2 direction than the main body portion 21. The support plate 23B is located on the Y1 direction side and the X1 direction side than the center pin 31.

[0042] 7 and 8, the second fixing portion 25 includes a support plate 25B instead of the groove 25A. The support plate 25B is a plate-shaped member extending further in the Z2 direction than the main body portion 21. The support plate 25B is located further in the Y1 direction and further in the X2 direction than the center pin 31.

[0043] 6, the center pin 31 contacts the front surface 5A. The center pin 31 and the front feed line 11A are electrically connected by a soldered portion 32A. Support plate 23B and support plate 25B are in contact with rear surface 5B. Substrate 5 is sandwiched from both sides by center pin 31 and support plates 23B and 25B. As a result, center pin 31 maintains a state in which it is in contact with front surface 5A.

[0044] In the second embodiment, the substrate 5 includes a through hole 61. The front feed line 11A and the back feed line 11B are electrically connected to each other in the through hole 61. Therefore, the center pin 31 is electrically connected to the back feed line 11B in addition to the front feed line 11A.

[0045] 2. Effects of the Antenna Device 1 According to the second embodiment described above in detail, in addition to the effects of the first embodiment described above, the following effects are also obtained.

[0046] (2A) The center pin 31 does not have a groove 33. Therefore, there is no need to form a groove 33 according to the thickness of the substrate 5. As a result, the center pin 31 is easy to manufacture. <Third embodiment> 1. Differences from the first embodiment The third embodiment has a basic configuration similar to that of the first embodiment, and therefore differences will be described below. Note that the same reference numerals as those in the first embodiment indicate the same configurations, and the preceding description will be referred to.

[0047] In the first embodiment described above, the main body portion 21 is an integrated member. In contrast, in the third embodiment, as shown in Figs. 9 to 13, the main body portion 21 is composed of a first main body portion 21A and a second main body portion 21B. As shown in Figs. 12 and 13, the first main body portion 21A and the second main body portion 21B are separable. The first main body portion 21A corresponds to the first element, and the second main body portion 21B corresponds to the second element.

[0048] As shown in FIG. 9 to FIG. 13, the first body portion 21A is located closer to the Z2 direction than the second body portion 21B. The first fixing portion 23, the second fixing portion 25, the third fixing portion 27, and the fourth fixing portion 29 are provided on the first body portion 21A. The first body portion 21A is basically made of an insulating material. However, a conductor layer 71 is formed on the entire surface of the first body portion 21A by electroless plating. Alternatively, the conductor layer 71 made of a conductive material is formed on a part of the surface of the first body portion 21A. The conductor layer 71 is formed on the surface of the third fixing portion 27 on the Y1 direction side, the surface of the X1 direction side, and the surface of the X2 direction side. The conductor layer 71 is also formed on the surface of the fourth fixing portion 29 on the Y2 direction side, the surface of the X1 direction side, and the surface of the X2 direction side. The first body portion 21A can be manufactured by, for example, MID (Molded Interconnect Device). Furthermore, when a metal material is used for the first main body portion 21A, the first main body portion 21A can be formed by a metal casting method or a metal injection molding method such as die casting or MIM (Metal Injection Molding).

[0049] 9, the insulator 35 is provided inside the second body portion 21B. In this case, the second body portion 21B is made of a conductive material except for the insulator 35. The plug 43 is connected to the second body portion 21B, which has a suitable shape. When the plug 43 is connected to the second body portion 21B, the second body portion 21B is electrically connected to the outer conductor of the coaxial cable 41 via the outer conductor layer 51.

[0050] 11 to 13, for example, second main body portion 21B includes rectangular base portion 73. In this case, base portion 73 is located on the Z2 direction side of second main body portion 21B. Second main body portion 21B includes four legs 75, 77, 79, and 81. Leg portions 75, 77, 79, and 81 are each a rectangular column-shaped member. Leg portions 75, 77, 79, and 81 extend from four corners of base portion 73 in the Z2 direction.

[0051] When first body portion 21A and second body portion 21B are connected, legs 75, 77, 79, 81 contact the outer peripheral surface of first body portion 21A and contact conductor layer 71. The position with which leg portion 75 contacts is the corner formed by first fixing portion 23 and fourth fixing portion 29 on the outer peripheral surface of first body portion 21A.

[0052] The position with which leg portion 77 makes contact is the corner of the outer circumferential surface of first main body portion 21A formed by first fixed portion 23 and third fixed portion 27. The position with which leg portion 79 makes contact is the corner of the outer circumferential surface of first main body portion 21A formed by second fixed portion 25 and third fixed portion 27. The position with which leg portion 81 makes contact is the corner of the outer circumferential surface of first main body portion 21A formed by second fixed portion 25 and fourth fixed portion 29.

[0053] The second main body portion 21B is electrically connected to the first ground plate 7 via the legs 77, 79, the conductor layer 71 of the third fixed portion 27, and the soldered portion 40A. In addition, the second main body portion 21B is electrically connected to the second ground plate 9 via the legs 75, 78, the conductor layer 71 of the fourth fixed portion 29, and the soldered portion 40B.

[0054] As described above, when the plug 43 is connected to the second body portion 21B, the second body portion 21B is electrically connected to the outer conductor of the coaxial cable 41. Therefore, when the plug 43 is connected to the second body portion 21B, the outer conductor of the coaxial cable 41 is electrically connected to the first ground plate 7 and the second ground plate 9.

[0055] In the first embodiment described above, the center pin 31 is an integrated member. In contrast, in the third embodiment, as shown in Figs. 12 and 13, the center pin 31 is composed of a first pin 31A and a second pin 31B. The first pin 31A and the second pin 31B are separable. The first pin 31A is located on the Z2 direction side of the second pin 31B. The first pin 31A has a groove 33 and is connected to the substrate 5. When the plug 43 is connected to the connector 17, the second pin 31B is inserted into the pin hole 47 and is electrically connected to the internal conductor layer 49.

[0056] 12 and 13, the first pin 31A has a connecting end 91 on the Z1 direction side. The connecting end 91 has a shape of a cylinder split in half. The inner peripheral surface of the connecting end 91 and the outer peripheral surface of the second main body portion 21B are joined to form one center pin 31.

[0057] 2. Effects of the Antenna Device 1 According to the third embodiment described above in detail, in addition to the effects of the first embodiment described above, the following effects are also obtained.

[0058] (3A) The main body 21 is composed of a first main body 21A and a second main body 21B. The first main body 21A and the second main body 21B are separable. Therefore, for example, the first main body 21A can be designed according to the substrate 5, and a general-purpose product can be used for the second main body 21B. In this case, the general-purpose product is a commercially available connector jack that fits into a coaxial cable plug, and is easily available. <Fourth embodiment> 1. Differences from the first embodiment The fourth embodiment has a basic configuration similar to that of the second embodiment, and therefore differences will be described below. Note that the same reference numerals as those in the second embodiment indicate the same configuration, and the preceding description will be referred to.

[0059] In the second embodiment described above, the main body portion 21 is an integrated member. In contrast, in the fourth embodiment, as shown in Fig. 17 and Fig. 18, the main body portion 21 is composed of a first main body portion 21A and a second main body portion 21B. The first main body portion 21A and the second main body portion 21B are separable.

[0060] As shown in Fig. 14 to Fig. 18, the configurations of the first main body portion 21A and the second main body portion 21B are similar to those of the third embodiment. In the fourth embodiment, the first fixing portion 23 has a groove 23A instead of a support plate 23B, similar to the first and third embodiments. Also, the second fixing portion 25 has a groove 25A instead of a support plate 25B, similar to the first and third embodiments. The portion of the substrate 5 on the side of the side surface 5C is inserted into the groove 23A and the groove 25A.

[0061] In the second embodiment described above, the center pin 31 is an integrated member. In contrast, in the fourth embodiment, as shown in Figs. 17 and 18, the center pin 31 is composed of a first pin 31A and a second pin 31B. The first pin 31A and the second pin 31B are separable. The first pin 31A is located on the Z2 direction side of the second pin 31B. The first pin 31A contacts the surface 5A. When the plug 43 is connected to the connector 17, the second pin 31B is inserted into the pin hole 47 and electrically connected to the internal conductor layer 49.

[0062] 17 and 18, the first pin 31A has a connecting end 91 on the Z1 direction side. The connecting end 91 has a shape of a cylinder split in half. The inner peripheral surface of the connecting end 91 and the outer peripheral surface of the second main body portion 21B are joined to form one center pin 31.

[0063] 2. Effects of the Antenna Device 1 According to the fourth embodiment described above in detail, in addition to the effects of the second embodiment described above, the following effects are also obtained.

[0064] (4A) The main body 21 is composed of a first main body 21A and a second main body 21B. The first main body 21A and the second main body 21B are separable. Therefore, for example, the first main body 21A is designed according to the substrate 5, and a general-purpose product can be used for the second main body 21B. <Other embodiments> Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above-described embodiments and can be implemented in various modified forms.

[0065] (1) A member other than the center pin 31 may be used as the first conductor. A member other than the body 21 may be used as the second conductor. A member other than the inner conductor layer 49 may be used as the first plug conductor. A member other than the outer conductor layer 51 may be used as the second plug conductor.

[0066] (2) Coaxial cable 41 does not need to include plug 43. For example, the central conductor of coaxial cable 41 may be connected to center pin 31 directly or via a member other than plug 43. In addition, the outer conductor of coaxial cable 41 may be connected to main body 21 directly or via a member other than plug 43.

[0067] (3) The function of one component in each of the above embodiments may be shared by multiple components, or the functions of multiple components may be performed by one component. Also, part of the configuration of each of the above embodiments may be omitted. Also, at least part of the configuration of each of the above embodiments may be added to or substituted for the configuration of another of the above embodiments.

[0068] (4) In addition to the above-described antenna device 1, the present disclosure can be realized in various forms, such as a system including the antenna device 1 as a component, a manufacturing method for the antenna device 1, and the like. [Explanation of symbols]

[0069] 1...antenna device, 3...cover, 5...substrate, 5A...front surface, 5B...rear surface, 5C...side surface, 7...first ground plate, 9...second ground plate, 11A...front surface feed line, 11B...rear surface feed line, 13...antenna element, 14...cap, 15...external connector, 17...connector, 19...coaxial cable, 21...main body, 21A...first main body, 21B...second main body, 23...first fixing portion, 23A...groove, 23B...support plate, 25...second fixing portion, 25A...groove, 25B ...support plate, 27...third fixing portion, 29...fourth fixing portion, 31...center pin, 31A...first pin, 31B...second pin, 32A, 34B...soldering portion, 33...groove, 35...insulator, 40A, 40B...soldering portion, 41...coaxial cable, 43...plug, 45...tip portion, 47...pin hole, 49...inner conductor layer, 51...outer conductor layer, 53...insulator, 61...through hole, 71...conductor layer, 73...base portion, 75, 77, 79, 81...legs, 91...connection end portion

Claims

1. An antenna element; A substrate; a surface feed line formed on a surface of the substrate and supplying power to the antenna element; a backside feed line formed on a backside of the substrate and supplying power to the antenna element; a first ground plate and a second ground plate facing each other across the substrate; a coaxial cable having a center conductor and an outer conductor; An antenna device comprising: a connector attached to a side of the substrate; The connector comprises: a first conductor portion electrically connected to the front feed line and the back feed line and to the central conductor; a second conductor portion electrically connected to the first ground plate and the second ground plate and electrically connected to the external conductor; Equipped with Antenna device.

2. 2. The antenna device according to claim 1, the coaxial cable includes a plug connectable to the connector; The plug is a first plug conductor portion electrically connected to the central conductor and electrically connected to the first conductor portion when the plug is connected to the connector; a second plug conductor portion electrically connected to the outer conductor and electrically connected to the second conductor portion when the plug is connected to the connector; Equipped with Antenna device.

3. 3. The antenna device according to claim 1, The connector comprises a first element attached to the substrate and a second element detachably attached to the first element. Antenna device.

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