Antenna device

Abstract

This invention allows multiple radiating conductors to share a single filter circuit. The antenna device (1) of this invention includes: a filter layer (FIL), a distributor layer (DIV), an antenna layer (ANT), and grounding patterns (G1, G2). The antenna layer (ANT) has multiple grounding supports (11A, 11B) respectively surrounding the radiating conductors (10A, 10B). The grounding patterns (G1, G2) have a region (S1) overlapping the space surrounded by the grounding supports (11A), a region (S2) overlapping the space surrounded by the grounding supports (11B), and a region (S3) connecting the regions (S1) and (S2). The width of region (S3) in the y-direction is narrower than the width of regions (S1, S2) in the y-direction. Thus, the grounding patterns (G1, G2) sandwiching the distributor layer (DIV) become narrower in region (S3), thereby improving the independence of the radiating conductors (10A) and (10B).

Description

[0001] (This application is a divisional application of patent application No. 202110666863.2, filed on June 16, 2021, entitled "Antenna Device".) Technical Field

[0002] The present invention relates to an antenna device, and more particularly to an antenna device having an integrated structure comprising an antenna layer containing a radiating conductor and a filter layer containing a filter circuit. Background Technology

[0003] As an antenna device that integrates an antenna layer containing a radiating conductor and a filter layer containing a filter circuit, the antenna device described in Patent Document 1 is known. Patent Document 1 Figure 5 The present invention discloses an antenna module in which multiple radiating conductors are arranged in an array. (Patent Document 1) Figure 5 The antenna module described herein assigns filter circuits to each of the nine radiating conductors individually.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent No. 6658704 Summary of the Invention

[0007] The technical problem the invention aims to solve

[0008] However, if filter circuits are assigned separately to multiple radiating conductors, the number of signal terminals increases, and control becomes more complex. To solve this problem, a method of sharing a single filter circuit among multiple radiating conductors can be considered, but in this case, how to distribute the antenna signal output from a single filter circuit to multiple radiating conductors becomes a problem.

[0009] Therefore, the object of the present invention is to provide an antenna device of the type in which multiple radiating conductors share a single filter circuit.

[0010] Means for solving technical problems

[0011] The antenna device of the present invention is characterized by comprising: a filter layer having a first filter circuit; an antenna layer having first and second radiating conductors; a divider layer stacked between the filter layer and the antenna layer, having a first divider circuit for distributing a first antenna signal supplied from the first filter circuit to the first and second radiating conductors; a first ground pattern disposed between the filter layer and the divider layer; and a second ground pattern disposed between the divider layer and the antenna layer, wherein the antenna layer further has a top view viewed from the stacking direction. The first grounding pattern has a plurality of first grounding pillars surrounding the first radiating conductor and a plurality of second grounding pillars surrounding the second radiating conductor. Both the first grounding pattern and the second grounding pattern have a first region that overlaps with a first space surrounded by the plurality of first grounding pillars, a second region that overlaps with a second space surrounded by the plurality of second grounding pillars, and a third region that connects the first region and the second region in a top view viewed from the stacking direction. The width of the third region in the width direction orthogonal to the arrangement direction of the first region and the second region is narrower than the width of the first region and the second region in the width direction.

[0012] According to the present invention, the first and second grounding patterns sandwiched between the distributor layers narrow in the third region, thereby improving the independence of the first radiating conductor and the second radiating conductor.

[0013] In this invention, the filter layer may also have a plurality of third ground pillars surrounding the first filter circuit in a top view viewed from the stacking direction, wherein the width of the third space surrounded by the plurality of third ground pillars is narrower than the width of the first space and the second space in the width direction. Therefore, the current flowing from the first and second ground pillars to the third ground pillars is reduced, thus improving the antenna characteristics.

[0014] In this invention, the antenna layer may also include a first power supply conductor capacitively coupled to the first radiating conductor and a second power supply conductor capacitively coupled to the second radiating conductor. The power supply position of the first power supply conductor relative to the first radiating conductor differs from the power supply position of the second power supply conductor relative to the second radiating conductor by 180°. The first distributor circuit includes a first common wiring section connected to the first filter circuit; and a first sub-docking line section and a second sub-docking line section branching from the first common wiring section and connected to the first power supply conductor and the second power supply conductor, respectively. The first sub-docking line section is shorter than the second sub-docking line section. Therefore, the energy radiated from the first radiating conductor and the energy radiated from the second radiating conductor will not cancel each other out.

[0015] In this invention, the first branch point from the first common wiring interval to the first sub-controlling line interval and the second sub-controlling line interval can also be positioned at a location overlapping the first region in a top view viewed from the stacking direction. This allows the width of the third region to be narrower.

[0016] In this invention, the filter layer may also include a second filter circuit, and the distributor layer may include a second distributor circuit that distributes the second antenna signal supplied from the second filter circuit to the first radiating conductor and the second radiating conductor. The antenna layer may also include a third power supply conductor capacitively coupled to the first radiating conductor and a fourth power supply conductor capacitively coupled to the second radiating conductor. The power supply position of the third power supply conductor relative to the first radiating conductor differs from the power supply position of the first power supply conductor relative to the first radiating conductor by 90°. The power supply position of the fourth power supply conductor relative to the second radiating conductor differs from the power supply position of the second power supply conductor relative to the second radiating conductor by 90°. The power supply position of the third power supply conductor relative to the first radiating conductor and the power supply position of the fourth power supply conductor relative to the second radiating conductor differs from the power supply position of the second power supply conductor relative to the second radiating conductor by 180°. The second distributor circuit includes a second common wiring section connected to the second filter circuit, and a third sub-docking line section and a fourth sub-docking line section branching from the second common wiring section and connected to the third power supply conductor and the fourth power supply conductor, respectively. The fourth sub-docking line section is shorter than the third sub-docking line section. Therefore, the energy radiated from the first radiating conductor and the energy radiated from the second radiating conductor will not cancel each other out.

[0017] In this invention, the second branch point, which branches from the second common wiring interval to the third and fourth sub-controlling line intervals, can be positioned in a top view from the stacking direction, overlapping with the second region. This allows the width of the third region to be narrower.

[0018] In this invention, the dielectric material constituting the antenna layer may also be different from the dielectric material constituting the filter layer and the distributor layer. This allows for a balance between antenna characteristics and filter characteristics.

[0019] The effects of the invention

[0020] According to the present invention, in an antenna device of the type in which at least two radiating conductors share a single filter circuit, the independence of the two radiating conductors can be improved. Attached Figure Description

[0021] Figure 1 This is a general perspective view showing the appearance of an antenna device 1 according to one embodiment of the present invention, showing the state as viewed from the radiating surface side.

[0022] Figure 2 This is a general perspective view showing the appearance of an antenna device 1 according to one embodiment of the present invention, showing the state as viewed from the mounting surface side.

[0023] Figure 3 This is a schematic diagram illustrating the internal structure of the antenna device 1, showing its state when mounted on the motherboard 5.

[0024] Figure 4 This is the circuit diagram of antenna device 1.

[0025] Figure 5 This is a general top view showing the state in which multiple antenna devices 1 are arranged in an array on the mother plate 5.

[0026] Figure 6 This is a general three-dimensional diagram showing the state in which dielectrics 2 to 4 have been removed from antenna device 1.

[0027] Figure 7 This is a rough side view of the antenna device 1 with dielectrics 2 to 4 removed, viewed from the x-direction.

[0028] Figure 8 This is a top view used to illustrate the structure of the distributor layer DIV.

[0029] Figure 9 This is a top view used to illustrate the structure of the filter layer (FIL).

[0030] Explanation of reference numerals in the attached figures

[0031] 1... Antenna device

[0032] 2~4……Dielectric

[0033] 5... Motherboard

[0034] 10A, 10B... Radiating conductors

[0035] 11A, 11B, 21, 28, 31... Grounding posts

[0036] 12A, 12B... Grounding ring

[0037] 13V, 13H, 14V, 14H... power supply conductor

[0038] 15H, 15V, 16H, 16V... capacitor patterns

[0039] 20V, 20H... Distributor circuit

[0040] 22, 25... Shared wiring section

[0041] 22a, 25a... share one end of the wiring section

[0042] 22b, 25b... the other end of the shared wiring section

[0043] 23, 24, 26, 27... sub-divisions of the dominant line intervals

[0044] 30V, 30H... Filter circuit

[0045] 40G... Grounding terminal

[0046] 40H, 40V... signal terminals

[0047] 301H~313H, 301V~313V… conductor patterns

[0048] ANT...antenna layer

[0049] DIV...Distributor Layer

[0050] FIL...Filter layer

[0051] G1~G3……Grounding patterns

[0052] Area S1~S3……

[0053] SV, SH... antenna signals Detailed Implementation

[0054] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0055] Figure 1 and Figure 2 This is a general perspective view showing the appearance of an antenna device 1 according to one embodiment of the present invention. Figure 1 This indicates the state as observed from the radiating side. Figure 2 This indicates the state as viewed from the mounting side.

[0056] like Figure 1 and Figure 2 As shown, the antenna device 1 of this embodiment has an antenna layer ANT, a filter layer FIL, and a distributor layer DIV stacked between the filter layer FIL and the antenna layer ANT.

[0057] The antenna layer ANT has dielectrics 2 and 3 and radiating conductors 10A and 10B embedded in the dielectric 3. Furthermore, in a top view viewed from the stacking direction (z-direction), the antenna layer ANT has multiple grounding supports 11A surrounding the radiating conductor 10A and multiple grounding supports 11B surrounding the radiating conductor 10B. The grounding supports 11A and 11B are pillar-shaped conductors extending in the z-direction through the dielectric 2. The multiple grounding supports 11A are connected to an annular grounding ring 12A in a defined xy-plane, and the multiple grounding supports 11B are connected to the annular grounding ring 12B in a defined xy-plane. A power supply conductor, described later, is disposed in the space surrounded by the multiple grounding supports 11A and 11B.

[0058] The filter layer (FIL) and distributor layer (DIV) are composed of dielectric 4 and conductor patterns embedded in dielectric 4. Details regarding the filter layer (FIL) and distributor layer (DIV) will be described later. The dielectric material constituting dielectric 4 has a higher dielectric constant than the dielectric material constituting dielectric 2. The dielectric material constituting dielectric 3 can also be the same as the dielectric material constituting dielectric 4. The filter layer (FIL) forms the mounting surface against the motherboard. Signal terminals 40V and 40H and multiple ground terminals 40G are provided on the mounting surface. Signal terminals 40V are used for inputting and outputting antenna signals for vertically polarized waves, and signal terminals 40H are used for inputting and outputting antenna signals for horizontally polarized waves. Ground terminals 40G are given a ground potential.

[0059] Figure 3 This is a schematic diagram illustrating the internal structure of the antenna device 1 in this embodiment, showing schematically its state when mounted on the motherboard 5.

[0060] like Figure 3 As shown, a grounding pattern G1 is provided between the filter layer FIL and the distributor layer DIV, and a grounding pattern G2 is provided between the distributor layer DIV and the antenna layer ANT. The grounding pattern G1 is embedded in the dielectric 4. The grounding pattern G2 is provided at the interface between the dielectric 4 and the dielectric 2.

[0061] A filter circuit 30V is disposed on the filter layer FIL. The filter circuit 30V is a bandpass filter and is connected to the signal terminal 40V. The filter circuit 30V is surrounded by multiple grounding pillars 31 in a top view viewed from the stack-up direction. Although in Figure 3 As not shown, the filter layer FIL also contains other filter circuits connected to the signal terminal 40H.

[0062] A distributor circuit 20V is provided on the distributor layer DIV. The distributor circuit 20V distributes the antenna signal supplied from the filter circuit 30V to the radiating conductors 10A and 10B. The distributor circuit 20V is surrounded by multiple grounding supports 21 in a top view viewed from the stacking direction. Although in Figure 3 As not shown in the diagram, the distributor layer DIV also contains other distributor circuits that are connected to other filter circuits.

[0063] Figure 4 This is a circuit diagram of the antenna device 1 in this embodiment.

[0064] like Figure 4As shown, the antenna signal SV supplied to signal terminal 40V is supplied to distributor circuit 20V via filter circuit 30V. Distributor circuit 20V distributes antenna signal SV to radiating conductors 10A and 10B. The antenna signal SH supplied to signal terminal 40H is supplied to distributor circuit 20H via filter circuit 30H. Distributor circuit 20H distributes antenna signal SH to radiating conductors 10A and 10B.

[0065] Antenna signals SV and SH are 90° apart from the power supply positions of radiating conductor 10A. Similarly, antenna signals SV and SH are 90° apart from the power supply positions of radiating conductor 10B. Therefore, antenna signals SV and SH are both radiated into space from the two radiating conductors 10A and 10B. Figure 5 As shown, the antenna device 1 in this embodiment can also be arranged in an array on the motherboard 5. In this way, if multiple antenna devices 1 are arranged in an array, a so-called phased array can be formed, which allows the direction of the beam to be arbitrarily changed.

[0066] The internal structure of the antenna device 1 of this embodiment will be described in more detail below.

[0067] Figure 6 This is a general three-dimensional diagram showing the state in which dielectrics 2 to 4 have been removed from antenna device 1.

[0068] like Figure 6 As shown, power supply conductors 13V and 13H, which overlap with the radiating conductor 10A when viewed from the z-direction, are arranged in a space surrounded by multiple grounding supports 11A. Power supply conductor 13V has a conductor pattern with the y-direction as its long side, supplying the radiating conductor 10A with a vertically polarized antenna signal SV. On the other hand, power supply conductor 13H has a conductor pattern with the x-direction as its long side, supplying the radiating conductor 10A with a horizontally polarized antenna signal SH. The power supply position of power supply conductor 13V relative to the radiating conductor 10A differs from the power supply position of power supply conductor 13H relative to the radiating conductor 10A by 90°.

[0069] Similarly, power supply conductors 14V and 14H, which overlap with the radiating conductor 10B when viewed from the z-direction, are arranged in the space surrounded by multiple grounding supports 11B. Power supply conductor 14V has a conductor pattern with the y-direction as its long side, supplying the radiating conductor 10B with a vertically polarized antenna signal SV. On the other hand, power supply conductor 14H has a conductor pattern with the x-direction as its long side, supplying the radiating conductor 10B with a horizontally polarized antenna signal SH. The power supply position of power supply conductor 14V relative to the radiating conductor 10B differs from the power supply position of power supply conductor 14H relative to the radiating conductor 10B by 90°.

[0070] A large area of ​​grounding patterns G1 to G3 is provided below the antenna layer ANT. The area sandwiched between grounding patterns G1 and G2 is the distributor layer DIV. Grounding patterns G1 and G2 are connected by multiple grounding supports 21. Here, grounding patterns G1 and G2 each have a region S1 that overlaps with the space surrounded by multiple grounding supports 11A, a region S2 that overlaps with the space surrounded by multiple grounding supports 11B, and a region S3 that connects regions S1 and S2 in a top view viewed from the z-direction. Moreover, the width of region S3 in the y-direction is narrower than the width of regions S1 and S2 in the y-direction. As a result, the mutual interference of radiating conductors 10A and 10B via grounding patterns G1 and G2 is reduced, thus improving the independence of radiating conductors 10A and 10B.

[0071] The area sandwiched between grounding pattern G1 and grounding pattern G3 is the filter layer (FIL). Grounding pattern G1 and grounding pattern G3 are connected by multiple grounding posts 31. The width of grounding pattern G3 in the y-direction can also be constant.

[0072] Figure 7 This is a rough side view of the antenna device 1 with dielectrics 2 to 4 removed, viewed from the x-direction.

[0073] like Figure 7 As shown, in this embodiment, when the width in the y-direction of the space surrounded by grounding posts 11A, 11B, and 21 is set to W1, and the width in the y-direction of the space surrounded by grounding post 31 is set to W2, W1 is designed to be greater than W2. Therefore, the current flowing from grounding posts 11A and 11B to grounding terminal 40G via grounding post 31 is reduced, thus improving antenna characteristics.

[0074] Figure 8 This is a top view used to illustrate the structure of the distributor layer DIV.

[0075] like Figure 8 As shown, distributor circuits 20V and 20H are provided in the distributor layer DIV. Distributor circuit 20H consists of a common wiring section 22 and branch wiring sections 23 and 24, while distributor circuit 20V consists of a common wiring section 25 and branch wiring sections 26 and 27. One end 22a of the common wiring section 22 constituting distributor circuit 20H is connected to filter circuit 30H via an opening provided in the grounding pattern G1. Similarly, one end 25a of the common wiring section 25 constituting distributor circuit 20V is connected to filter circuit 30V via an opening provided in the grounding pattern G1.

[0076] Branch line sections 23 and 24 constituting the distributor circuit 20H are branches originating from the other end 22b of the common line section 22. The end of branch line section 23 is connected to the capacitor pattern 15H included in the antenna layer ANT, and the end of branch line section 24 is connected to the capacitor pattern 16H included in the antenna layer ANT. Similarly, branch line sections 26 and 27 constituting the distributor circuit 20V are branches originating from the other end 25b of the common line section 25. The end of branch line section 26 is connected to the capacitor pattern 15V included in the antenna layer ANT, and the end of branch line section 27 is connected to the capacitor pattern 16V included in the antenna layer ANT. In addition, multiple grounding posts 28 are provided in the distributor layer DIV, arranged in a manner that surrounds the common line sections 22 and 25 and the branch line sections 23, 24, 26, and 27.

[0077] Here, capacitor pattern 15H is capacitively coupled to power supply conductor 13H, thereby supplying antenna signal SH via filter circuit 30H, common wiring section 22, and sub-control line section 23 to power supply conductor 13H. Capacitor pattern 16H is capacitively coupled to power supply conductor 14H, thereby supplying antenna signal SH via filter circuit 30H, common wiring section 22, and sub-control line section 24 to power supply conductor 14H. The power supply position of power supply conductor 13H relative to radiating conductor 10A differs from the power supply position of power supply conductor 14H relative to radiating conductor 10B by 180°. Therefore, when in-phase antenna signals SH are supplied to radiating conductors 10A and 10B, the energy radiated from radiating conductor 10A cancels out the energy radiated from radiating conductor 10B. However, in this embodiment, sub-control line section 23 is shorter than sub-control line section 24, thereby supplying antenna signals SH with phases reversed by 180° to radiating conductors 10A and 10B, so the energy radiated from radiating conductor 10A reinforces the energy radiated from radiating conductor 10B.

[0078] Similarly, capacitor pattern 15V is capacitively coupled to power supply conductor 13V, thereby supplying antenna signal SV via filter circuit 30V, common wiring section 25, and sub-control line section 26 to power supply conductor 13V. Capacitor pattern 16V is capacitively coupled to power supply conductor 14V, thereby supplying antenna signal SV via filter circuit 30V, common wiring section 25, and sub-control line section 27 to power supply conductor 14V. The power supply position of power supply conductor 13V relative to radiating conductor 10A differs from the power supply position of power supply conductor 14V relative to radiating conductor 10B by 180°. Therefore, when in-phase antenna signals SV are supplied to radiating conductors 10A and 10B, the energy radiated from radiating conductor 10A cancels out the energy radiated from radiating conductor 10B. However, in this embodiment, sub-control line section 27 is shorter than sub-control line section 26, thereby supplying antenna signals SV with phases reversed by 180° to radiating conductors 10A and 10B, so the energy radiated from radiating conductor 10A reinforces the energy radiated from radiating conductor 10B.

[0079] Here, the other end 22b of the common wiring section 22, which serves as a branch point of the distributor circuit 20H, is located in the top view viewed from the z direction, overlapping with the space surrounded by the grounding pillar 11A, that is, overlapping with region S1 of the grounding patterns G1 and G2. Conversely, the other end 25b of the common wiring section 25, which serves as a branch point of the distributor circuit 20V, is located in the top view viewed from the z direction, overlapping with the space surrounded by the grounding pillar 11B, that is, overlapping with region S2 of the grounding patterns G1 and G2. Therefore, at the location overlapping with region S3 of the grounding patterns G1 and G2, the branch wiring sections 24 and 26 extend only linearly in the x direction, thus sufficiently narrowing the width of region S3 in the y direction.

[0080] Figure 9 This is a top view used to illustrate the structure of the filter layer (FIL).

[0081] like Figure 9 As shown, filter circuits 30V and 30H are provided on the filter layer FIL. Among them, filter circuit 30V includes conductor patterns 301V to 313V, and filter circuit 30H includes conductor patterns 301H to 313H.

[0082] Conductor pattern 301V is connected to signal terminal 40V and capacitively coupled to conductor pattern 302V. Conductor pattern 302V functions as an inductor. Conductor patterns 304V, 306V, 308V, 310V, and 312V also function as inductors, capacitively coupled via conductor patterns 303V, 305V, 307V, 309V, and 311V. Furthermore, conductor pattern 313V, capacitively coupled to conductor pattern 312V, is connected to one end 25a of the common wiring section 25 included in the distributor circuit 20V via an opening provided in ground pattern G1.

[0083] Similarly, conductor pattern 301H is connected to signal terminal 40H and capacitively coupled to conductor pattern 302H. Conductor pattern 302H functions as an inductor. Conductor patterns 304H, 306H, 308H, 310H, and 312H also function as inductors, capacitively coupled via conductor patterns 303H, 305H, 307H, 309H, and 311H. Furthermore, conductor pattern 313H, capacitively coupled to conductor pattern 312H, is connected to one end 22a of the common wiring section 22 included in the distributor circuit 20H via an opening provided in the ground pattern G1.

[0084] The above describes the structure of the antenna device 1 according to this embodiment. Thus, in the antenna device 1 of this embodiment, since antenna signals SV and SH are supplied to both radiating conductors 10A and 10B, only two signal terminals 40V and 40H for inputting the antenna signals SV and SH are required. Furthermore, by using grounding patterns G1 and G2 to sandwich the distributor layer DIV that distributes the antenna signals SV and SH, and by narrowing the width of the region S3 of the grounding patterns G1 and G2, the independence of the radiating conductors 10A and 10B can be improved. Moreover, since the width in the y-direction of the space surrounded by the grounding pillar 31 around the filter circuits 30V and 30H is narrowed, high antenna characteristics can also be obtained.

[0085] The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments. Various modifications can be made without departing from the spirit of the present invention, and these modifications are also included within the scope of the present invention.

Claims

1. An antenna device, characterized in that, include: An antenna layer having a first radiating conductor and a second radiating conductor; A grounding pattern is disposed on the antenna layer; and A distributor layer, stacked on the antenna layer, has a first distributor circuit that distributes the first antenna signal to the first radiating conductor and the second radiating conductor. The antenna layer also has a plurality of first grounding posts surrounding the first radiating conductor and a plurality of second grounding posts surrounding the second radiating conductor in a top view viewed from the stacking direction. The grounding pattern has a first region that overlaps with a first space surrounded by the plurality of first grounding posts in a top view viewed from the stacking direction, a second region that overlaps with a second space surrounded by the plurality of second grounding posts, and a third region connecting the first region and the second region. The antenna layer further has a first grounding ring connected to the plurality of first grounding posts and a second grounding ring connected to the plurality of second grounding posts, wherein the first grounding ring and the second grounding ring have a plurality of rings in the stacking direction.

2. The antenna device as described in claim 1, characterized in that: The width of the third region in the width direction orthogonal to the arrangement direction of the first region and the second region is narrower than the width of the first region and the second region in the width direction.

3. The antenna device as described in claim 1, characterized in that: The antenna layer also has a first power supply conductor capacitively coupled to the first radiating conductor and a second power supply conductor capacitively coupled to the second radiating conductor.

4. The antenna device as described in claim 3, characterized in that: The position of the first power supply conductor relative to the first radiating conductor differs from the position of the first power supply conductor relative to the second radiating conductor by 180°. The first distributor circuit has: a first common wiring section; And the first branch control line section and the second branch control line section, which branch from the first common wiring section and are respectively connected to the first power supply conductor and the second power supply conductor, The first sub-dominant line interval is shorter than the second sub-dominant line interval.

5. The antenna device as described in claim 4, characterized in that: The first branch point from the first common wiring interval to the first sub-controlling line interval and the second sub-controlling line interval is set at a position overlapping the first region in the top view viewed from the stacking direction.

6. The antenna device as described in claim 3, characterized in that: The distributor layer also includes a second distributor circuit that distributes the second antenna signal to the first radiating conductor and the second radiating conductor. The antenna layer also has a third power supply conductor coupled to the first radiating conductor capacitor and a fourth power supply conductor coupled to the second radiating conductor capacitor. The first power supply conductor and the third power supply conductor are positioned at different planar locations in the stacking direction. The second power supply conductor and the fourth power supply conductor are positioned in different planar locations in the stacking direction.

7. The antenna device as described in claim 6, characterized in that: The power supply position of the third power supply conductor relative to the first radiating conductor differs from the power supply position of the first power supply conductor relative to the first radiating conductor by 90°. The power supply position of the fourth power supply conductor relative to the second radiating conductor differs from the power supply position of the second power supply conductor relative to the second radiating conductor by 90°. The power supply position of the third power supply conductor relative to the first radiating conductor differs from the position of the first power supply conductor corresponding to the power supply position of the fourth power supply conductor relative to the second radiating conductor by 180°. The second distributor circuit includes: a second common wiring section; and a third branch line section and a fourth branch line section branching from the second common wiring section and respectively connected to the third power supply conductor and the fourth power supply conductor. The fourth sub-dominant line interval is shorter than the third sub-dominant line interval.

8. The antenna device as claimed in claim 7, characterized in that: The second branch point, which branches from the second common wiring interval to the third and fourth sub-dominant wiring intervals, is located at a position overlapping the second region in a top view viewed from the stacking direction.

9. The antenna device as described in any one of claims 1 to 8, characterized in that: The antenna layer includes a first dielectric and a second dielectric disposed between the first dielectric and the distributor layer, wherein the first radiating conductor and the second radiating conductor are embedded in the first dielectric.

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