CN213340729U - Antenna device - Google Patents

Abstract

The utility model discloses an antenna device, it includes a base plate subassembly, a first antenna module, a second antenna module, a first feed-in group and a second feed-in group. The substrate assembly includes a first substrate, a second substrate, a third substrate and a fourth substrate. The first antenna assembly comprises a first antenna structure and a second antenna structure, the first antenna structure is arranged on the first substrate, and the second antenna structure is arranged on the second substrate. The second antenna assembly comprises a third antenna structure and a fourth antenna structure, the third antenna structure is arranged on the third substrate, and the fourth antenna structure is arranged on the fourth substrate. The center frequencies of the operating frequency bands generated by the first antenna structure and the second antenna structure are respectively smaller than the center frequencies of the operating frequency bands generated by the third antenna structure and the fourth antenna structure. Therefore, the utility model discloses the effect that produces the multiband has been reached.

Description

Antenna device

Technical Field

The present invention relates to an antenna, and more particularly to an antenna device.

Background

The antenna of the prior art is a single radiating element, and the gain thereof still needs to be improved, so how to improve the gain of the antenna device and reduce the size of the antenna device by improving the structural design to overcome the above-mentioned drawbacks has become one of the important issues to be solved by the technology.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that, not enough to prior art provides an antenna device.

In order to solve the above technical problem, the present invention provides an antenna device, which includes a substrate assembly, a first antenna assembly, a second antenna assembly, a first feeding line set and a second feeding line set. The substrate assembly comprises a first substrate, a second substrate, a third substrate and a fourth substrate. The first antenna assembly comprises a first antenna structure and a second antenna structure, the first antenna structure is arranged on the first substrate, the second antenna structure is arranged on the second substrate, the first antenna structure comprises a first radiation metal piece, a second radiation metal piece corresponding to the first radiation metal piece and a first feed-in metal piece, and the second antenna structure comprises a third radiation metal piece and a fourth radiation metal piece corresponding to the third radiation metal piece. The second antenna assembly comprises a third antenna structure and a fourth antenna structure, the third antenna structure is arranged on the third substrate, the fourth antenna structure is arranged on the fourth substrate, the third antenna structure comprises a fifth radiation metal piece, a sixth radiation metal piece corresponding to the fifth radiation metal piece and a second feed-in metal piece, and the fourth antenna structure comprises a seventh radiation metal piece and an eighth radiation metal piece corresponding to the seventh radiation metal piece. The first feed-in wire set comprises a first inner conductor and a first outer conductor, the first inner conductor is electrically connected to the first feed-in metal piece and the fourth radiation metal piece, and the first outer conductor is electrically connected to the first radiation metal piece, the second radiation metal piece and the third radiation metal piece. The second feed-in wire set includes a second inner conductor and a second outer conductor, the second inner conductor is electrically connected to the second feed-in metal piece and the eighth radiating metal piece, and the second outer conductor is electrically connected to the fifth radiating metal piece, the sixth radiating metal piece and the seventh radiating metal piece. The center frequencies of the operating frequency bands generated by the first antenna structure and the second antenna structure are respectively less than the center frequencies of the operating frequency bands generated by the third antenna structure and the fourth antenna structure.

Furthermore, the first substrate includes a first surface and a second surface corresponding to the first surface, the second substrate includes a third surface and a fourth surface corresponding to the third surface, the third substrate includes a fifth surface and a sixth surface corresponding to the fifth surface, and the fourth substrate includes a seventh surface and an eighth surface corresponding to the seventh surface; wherein the first antenna structure is disposed on the first surface, the second antenna structure is disposed on the third surface, the third antenna structure is disposed on the fifth surface, and the fourth antenna structure is disposed on the seventh surface.

Furthermore, the first substrate, the second substrate, the third substrate and the fourth substrate are independent from each other.

Further, a direction in which the first surface faces and a direction in which the third surface faces are the same as each other, a direction in which the fifth surface faces and a direction in which the seventh surface faces are the same as each other, and a direction in which the first surface faces and a direction in which the fifth surface faces are different from each other.

Further, a direction in which the first surface faces and a direction in which the third surface faces are the same as each other, a direction in which the fifth surface faces and a direction in which the seventh surface faces are the same as each other, and a direction in which the first surface faces and a direction in which the fifth surface faces are the same as each other.

Further, the first substrate, the second substrate, the third substrate and the fourth substrate are connected to each other, and the first substrate, the second substrate, the third substrate and the fourth substrate are integrally molded to form the substrate assembly.

Further, a direction in which the first surface faces and a direction in which the third surface faces are the same as each other, a direction in which the fifth surface faces and a direction in which the seventh surface faces are the same as each other, and a direction in which the first surface faces and a direction in which the fifth surface faces are the same as each other.

Furthermore, the first antenna structure can generate an operating frequency band within a frequency range from 2400MHz to 2500MHz, and the second antenna structure can generate an operating frequency band within a frequency range from 2400MHz to 2500 MHz; wherein the third antenna structure is capable of generating an operating frequency band in a frequency range between 4900MHz and 5900MHz, and the fourth antenna structure is capable of generating an operating frequency band in a frequency range between 4900MHz and 5900 MHz.

Still further, the antenna device further includes: a first cladding layer, a second cladding layer, a third cladding layer and a fourth cladding layer, wherein the first cladding layer is disposed on the first surface and covers a portion of the first antenna structure, the second cladding layer is disposed on the third surface and covers a portion of the second antenna structure, the third cladding layer is disposed on the fifth surface and covers a portion of the third antenna structure, and the fourth cladding layer is disposed on the seventh surface and covers a portion of the fourth antenna structure.

Furthermore, the first antenna assembly further includes a fifth antenna structure, where the fifth antenna structure includes a ninth radiating metal element, a tenth radiating metal element corresponding to the ninth radiating metal element, and a third feeding metal element.

The utility model discloses an one of them beneficial effect lies in, the utility model provides an antenna device, it can pass through "first antenna structure reaches the central frequency of the operation frequency band that second antenna structure produced respectively all is less than the third antenna structure reaches the central frequency's that the fourth antenna structure produced the operation frequency band respectively technical scheme to produce the effect of multiband.

For a further understanding of the nature and technical content of the present invention, reference should be made to the following detailed description and accompanying drawings, which are provided for reference and illustration purposes only and are not intended to limit the invention.

Drawings

Fig. 1 is a schematic top view of an antenna device according to a first embodiment of the present invention.

Fig. 2 is a schematic bottom view of an antenna device according to a first embodiment of the present invention.

Fig. 3 is a schematic side view of an antenna device according to a first embodiment of the present invention.

Fig. 4 is another schematic top view of the antenna device according to the first embodiment of the present invention.

Fig. 5 is another schematic bottom view of the antenna device according to the first embodiment of the present invention.

Fig. 6 is a schematic top view of the antenna device according to the first embodiment of the present invention.

Fig. 7 is a schematic top view of an antenna device according to the first embodiment of the present invention.

Fig. 8 is a schematic top view of an antenna device according to a second embodiment of the present invention.

Fig. 9 is a schematic bottom view of an antenna device according to a second embodiment of the present invention.

Detailed Description

The following is a description of the embodiments of the present invention disclosed in the "antenna device" with reference to specific embodiments, and those skilled in the art can understand the advantages and effects of the present invention from the disclosure of the present invention. The present invention may be practiced or carried out in other different embodiments, and various modifications and changes may be made in the details of this description based on the different points of view and applications without departing from the spirit of the present invention. The drawings of the present invention are merely schematic illustrations, and are not drawn to scale, but are described in advance. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used primarily to distinguish one element from another. In addition, the term "or" as used herein should be taken to include any one or combination of more of the associated listed items as the case may be.

First embodiment

First, referring to fig. 1 to 5, the present invention provides an antenna device U, which includes a substrate assembly 1, a first antenna assembly 2, a second antenna assembly 3, a first feeding line set 4 and a second feeding line set 5. The first antenna element 2 may include a first antenna structure 21 and a second antenna structure 22, and the second antenna element 3 may include a third antenna structure 31 and a fourth antenna structure 32. For example, the center frequency of the operating frequency band generated by the first antenna element 2 may be smaller than the center frequency of the operating frequency band generated by the second antenna element 3, for example, the center frequencies of the operating frequency bands generated by the first antenna structure 21 and the second antenna structure 22 are smaller than the center frequencies of the operating frequency bands generated by the third antenna structure 31 and the fourth antenna structure 32, respectively. In one embodiment, the first antenna structure 21 can generate an operating frequency band with a frequency range between 2400MHz and 2500MHz, the second antenna structure 22 can generate an operating frequency band with a frequency range between 2400MHz and 2500MHz, the third antenna structure 31 can generate an operating frequency band with a frequency range between 4900MHz and 5900MHz, and the fourth antenna structure 32 can generate an operating frequency band with a frequency range between 4900MHz and 5900MHz, which should not be construed as a limitation to the present invention. The utility model provides an antenna device U can use in Wireless Local Area Network (WLAN), and can satisfy IEEE 802.11ax (WiFi 6) standard. Furthermore, the utility model provides an antenna device U also can have the performance of high throughput and can realize the effect of high-speed download.

In view of the above, the substrate assembly 1 may include a first substrate 11, a second substrate 12, a third substrate 13 and a fourth substrate 14. For example, the first substrate 11, the second substrate 12, the third substrate 13 and the fourth substrate 14 may be made of epoxy resin fiberglass substrate (FR-4), but the present invention is not limited thereto. In addition, the first substrate 11 includes a first surface 111 and a second surface 112 corresponding to the first surface 111, the second substrate 12 includes a third surface 121 and a fourth surface 122 corresponding to the third surface 121, the third substrate 13 includes a fifth surface 131 and a sixth surface 132 corresponding to the fifth surface 131, and the fourth substrate 14 includes a seventh surface 141 and an eighth surface 142 corresponding to the seventh surface 141. For example, the first surface 111 and the second surface 112 are two opposite surfaces of the first substrate 11, the third surface 121 and the fourth surface 122 are two opposite surfaces of the second substrate 12, the fifth surface 131 and the sixth surface 132 are two opposite surfaces of the third substrate 13, and the seventh surface 141 and the eighth surface 142 are two opposite surfaces of the fourth substrate 14.

As described above, the first antenna structure 21 is disposed on the first substrate 11, and the second antenna structure 22 is disposed on the second substrate 12. For example, the first antenna structure 21 is disposed on the first surface 111, and the second antenna structure 22 is disposed on the third surface 121. The first antenna structure 21 includes a first radiation metal part 211, a second radiation metal part 212 corresponding to the first radiation metal part 211, and a first feeding metal part 213, and the first radiation metal part 211, the second radiation metal part 212, and the first feeding metal part 213 can be separated from each other. In addition, the second antenna structure 22 includes a third radiation metal part 221 and a fourth radiation metal part 222 corresponding to the third radiation metal part 221, and the third radiation metal part 221 and the fourth radiation metal part 222 can be separated from each other. Therefore, to the present invention, the first antenna structure 21 and the second antenna structure 22 can be respectively metal layers disposed on the first substrate 11 and the second substrate 12, and the first substrate 11 and the first antenna structure 21 can be respectively a single panel with the second substrate 12 and the second antenna structure 22.

As described above, the third antenna structure 31 is provided on the third substrate 13, and the fourth antenna structure 32 is provided on the fourth substrate 14. For example, the third antenna structure 31 is disposed on the fifth surface 131, and the fourth antenna structure 32 is disposed on the seventh surface 141. The third antenna structure 31 includes a fifth radiation metal part 311, a sixth radiation metal part 312 corresponding to the fifth radiation metal part 311, and a second feeding metal part 313, and the fifth radiation metal part 311, the sixth radiation metal part 312, and the second feeding metal part 313 may be separated from each other. In addition, the fourth antenna structure 32 includes a seventh radiation metal element 321 and an eighth radiation metal element 322 corresponding to the seventh radiation metal element 321, and the seventh radiation metal element 321 and the eighth radiation metal element 322 can be separated from each other. Therefore, it is to be understood that the present invention can be applied to a third antenna structure 31 and a fourth antenna structure 32, which are respectively metal layers disposed on the third substrate 13 and the fourth substrate 14, and the third substrate 13 and the third antenna structure 31, the fourth substrate 14 and the fourth antenna structure 32 can be respectively a single-sided board. In addition, the first antenna structure 21, the second antenna structure 22, the third antenna structure 31 and the fourth antenna structure 32 can be arranged in sequence along a predetermined direction (for example, the Z direction), which is not limited by the present invention. For example, the antenna structures in the first antenna element 2 and the antenna structures in the second antenna element 3 may be staggered with each other, that is, two adjacent antenna structures (e.g., the first antenna structure 21 and the second antenna structure 22) in the first antenna element 2 have one antenna structure (e.g., the third antenna structure 31) in the second antenna element 3, and two adjacent antenna structures (e.g., the third antenna structure 31 and the fourth antenna structure 32) in the second antenna element 3 have one antenna structure (e.g., the second antenna structure 22) in the first antenna element 2.

Next, referring to fig. 4 and 5 again, preferably, the antenna device U further includes a first cladding layer L1, a second cladding layer L2, a third cladding layer L3 and a fourth cladding layer L4 according to the present invention. The first cladding layer L1 is disposed on the first surface 111 and covers a portion of the first antenna structure 21, the second cladding layer L2 is disposed on the third surface 121 and covers a portion of the second antenna structure 22, the third cladding layer L3 is disposed on the fifth surface 131 and covers a portion of the third antenna structure 31, and the fourth cladding layer L4 is disposed on the seventh surface 141 and covers a portion of the fourth antenna structure 32. For example, the first cladding layer L1, the second cladding layer L2, the third cladding layer L3 and the fourth cladding layer L4 may be insulating coating layers, another portion of the first antenna structure 21 may be exposed relative to the first cladding layer L1 to serve as a welding region, another portion of the second antenna structure 22 may be exposed relative to the second cladding layer L2 to serve as a welding region, another portion of the third antenna structure 31 may be exposed relative to the third cladding layer L3 to serve as a welding region, and another portion of the fourth antenna structure 32 may be exposed relative to the fourth cladding layer L4 to serve as a welding region. Thereby, the first feeding wire set 4 and the second feeding wire set 5 can be welded on the welding area to feed signals. In addition, for the sake of clarity of the drawings, the first feeding wire set 4 and the second feeding wire set 5 are separated from the first antenna structure 21, the second antenna structure 22, the third antenna structure 31 and the fourth antenna structure 32 and electrically connected by a conductive wire in the drawings as an exemplary illustration.

As described above, referring to fig. 4 and fig. 5, the first feed line set 4 includes a first inner conductor 41 and a first outer conductor 42, the first inner conductor 41 is electrically connected to the first feed metal 213 and the fourth radiation metal 222, and the first outer conductor 42 is electrically connected to the first radiation metal 211, the second radiation metal 212, and the third radiation metal 221. In other words, the first inner conductor 41 and the first outer conductor 42 can be soldered in the soldering area of the first antenna element 2, respectively, for feeding signals. In addition, the second feeding wire set 5 includes a second inner conductor 51 and a second outer conductor 52, the second inner conductor 51 is electrically connected to the second feeding metal element 313 and the eighth radiating metal element 322, and the second outer conductor 52 is electrically connected to the fifth radiating metal element 311, the sixth radiating metal element 312 and the seventh radiating metal element 321. In other words, the second inner conductor 51 and the second outer conductor 52 can be soldered to the soldering region of the second antenna element 3, respectively, for feeding signals.

As mentioned above, for example, the first feeding line group 4 and the second feeding line group 5 can be Coaxial cables (Coaxial cables), so that the first inner conductor 41 and the second inner conductor 51 can be core wires of the Coaxial cables, and the first outer conductor 42 and the second outer conductor 52 can be network wires of the Coaxial cables. In addition, for example, the first feeding line set 4 is composed of a first feeding line 4A and a second feeding line 4B separated from each other, and the first feeding line 4A and the second feeding line 4B may be coaxial cables, respectively. However, in other embodiments, the first feeding line 4A and the second feeding line 4B may be the same line, that is, the first feeding line group 4 may form the first feeding line 4A and the second feeding line 4B by a middle peeling method. In addition, for example, the second feeding line set 5 is composed of a third feeding line 5A and a fourth feeding line 5B separated from each other, and the third feeding line 5A and the fourth feeding line 5B may be coaxial cables, respectively. However, in other embodiments, the third feeding line 5A and the fourth feeding line 5B may be the same line, that is, the second feeding line group 5 may form the third feeding line 5A and the fourth feeding line 5B by a middle peeling method.

Next, referring to fig. 1 to 3 again, in the first embodiment, the first substrate 11, the second substrate 12, the third substrate 13 and the fourth substrate 14 are independent from each other, that is, when the first substrate 11, the second substrate 12, the third substrate 13 and the fourth substrate 14 are required to be combined with each other to form the substrate assembly 1, a tape or an adhesive is required to connect the first substrate 11, the second substrate 12, the third substrate 13 and the fourth substrate 14 to each other. Therefore, the number of the antenna structures can be adjusted by increasing or decreasing the number of the substrates in the substrate assembly 1.

In summary, according to the first embodiment, the facing direction (e.g., positive X direction) of the first surface 111 and the facing direction (e.g., positive X direction) of the third surface 121 are the same as each other, the facing direction (e.g., negative X direction) of the fifth surface 131 and the facing direction (e.g., negative X direction) of the seventh surface 141 are the same as each other, and the facing direction (e.g., positive X direction) of the first surface 111 and the facing direction (e.g., negative X direction) of the fifth surface 131 are different from each other. In other words, the first antenna structure 21 and the second antenna structure 22 may be disposed on one side of one surface of the substrate assembly 1, and the third antenna structure 31 and the fourth antenna structure 32 may be disposed on the other side of the other surface of the substrate assembly 1. Therefore, the first feeding wire set 4 and the second feeding wire set 5 can be conveniently arranged.

Next, referring to fig. 6, as can be seen from a comparison between fig. 6 and fig. 1, in the embodiment of fig. 6, a direction (e.g., positive X direction) faced by the first surface 111 and a direction (e.g., positive X direction) faced by the third surface 121 are the same as each other, a direction (e.g., positive X direction) faced by the fifth surface 131 and a direction (e.g., positive X direction) faced by the seventh surface 141 are the same as each other, and a direction (e.g., positive X direction) faced by the first surface 111 and a direction (e.g., positive X direction) faced by the fifth surface 131 are the same as each other. In other words, in the embodiment of fig. 6, the first antenna structure 21, the second antenna structure 22, the third antenna structure 31 and the fourth antenna structure 32 are all disposed on one side of one surface of the substrate assembly 1.

Next, referring to fig. 7, as can be seen from a comparison between fig. 7 and fig. 6, in the embodiment of fig. 7, the first substrate 11, the second substrate 12, the third substrate 13 and the fourth substrate 14 are connected to each other, and the first substrate 11, the second substrate 12, the third substrate 13 and the fourth substrate 14 are integrally formed to form the substrate assembly 1. In addition, a direction (e.g., a positive X direction) in which the first surface 111 faces and a direction (e.g., a positive X direction) in which the third surface 121 faces are the same as each other, a direction (e.g., a positive X direction) in which the fifth surface 131 faces and a direction (e.g., a positive X direction) in which the seventh surface 141 faces are the same as each other, and a direction (e.g., a positive X direction) in which the first surface 111 faces and a direction (e.g., a positive X direction) in which the fifth surface 131 faces are the same as each other. In other words, in the embodiment of fig. 7, the first antenna structure 21, the second antenna structure 22, the third antenna structure 31 and the fourth antenna structure 32 are all disposed on one side of one surface of the substrate assembly 1 formed by integrally molding a single panel.

Second embodiment

First, referring to fig. 8 and 9, a second embodiment of the present invention provides an antenna device U, as can be seen from a comparison between the second embodiment and the first embodiment, in the second embodiment, an antenna structure (e.g., a fifth antenna structure 23) in the first antenna element 2 can be further added, and the antenna structures in the first antenna element 2 and the antenna structures in the second antenna element 3 can be staggered with each other. That is, two adjacent antenna structures (e.g., the first antenna structure 21 and the second antenna structure 22) in the first antenna assembly 2 have an antenna structure (e.g., the third antenna structure 31) in the second antenna assembly 3, two adjacent antenna structures (e.g., the second antenna structure 22 and the third antenna structure 31) in the first antenna assembly 2 have an antenna structure (e.g., the fourth antenna structure 32) in the second antenna assembly 3, and two adjacent antenna structures (e.g., the third antenna structure 31 and the fourth antenna structure 32) in the second antenna assembly 3 have an antenna structure (e.g., the second antenna structure 22) in the first antenna assembly 2. In addition, although the second embodiment exemplifies the addition of the antenna structure in the first antenna element 2, in other embodiments, the addition of the antenna structure in the second antenna element 3 may be also possible. In other words, the user can add the antenna structures in the first antenna element 2 or the second antenna element 3 according to the actual requirement.

In view of the above, the substrate assembly 1 may further include a fifth substrate 15, and the fifth antenna structure 23 may be disposed on the fifth substrate 15. In addition, the antenna device U may further include a fifth cladding layer L5, the fifth cladding layer L5 is disposed on the fifth substrate 15 and covers a portion of the fifth antenna structure 23, and another portion of the fifth antenna structure 23 can be exposed relative to the fifth cladding layer L5 to serve as a welding area. Thereby, the first feeding line group 4 can be welded on the welding area to feed signals.

In view of the above, for example, the fifth antenna structure 23 includes a ninth radiating metal element 231, a tenth radiating metal element 232 corresponding to the ninth radiating metal element 231, and a third feeding metal element 233, and the ninth radiating metal element 231, the tenth radiating metal element 232, and the third feeding metal element 233 can be separated from each other. In addition, the first inner conductor 41 of the first feed-in wire set 4 may be electrically connected to the third feed-in metal member 233, and the first outer conductor 42 may be electrically connected to the tenth radiation metal member 232 of the ninth radiation metal member 231. In addition, it should be noted that other components in the second embodiment are similar to those in the first embodiment, and are not described herein again.

The utility model has the advantages of the utility model discloses an one of them beneficial effect lies in, the utility model provides an antenna device U, its central frequency that can pass through "the operation frequency band that first antenna structure 21 and second antenna structure 22 produced respectively all is less than the central frequency of the operation frequency band that third antenna structure 31 and fourth antenna structure 32 produced respectively" technical scheme to produce the effect of multiband.

Furthermore, the present invention provides an antenna device U, which can adjust the number of antenna structures in the first antenna assembly 2 and the second antenna assembly 3 according to different gain requirements through the technical scheme that the first substrate 11, the second substrate 12, the third substrate 13 and the fourth substrate 14 are independent from each other, so as to achieve a multi-frequency design.

Furthermore, the utility model provides an antenna device U, it can set up at first surface 111 through "first antenna structure 21, and second antenna structure 22 sets up at third surface 121, and third antenna structure 31 sets up at fifth surface 131, and fourth antenna structure 32 sets up the technical scheme at seventh surface 141", and makes the utility model provides a base plate component 1 among the antenna device U can constitute by the single-sided board, and the antenna device U that utilizes the single-sided board to constitute can satisfy the demand of multifrequency multi-feed, high gain and omnidirectionality.

Furthermore, the present invention also provides an antenna device U, which can make the distance between two antenna structures (e.g. the first antenna structure 21 and the second antenna structure 22) in the first antenna assembly 2 (e.g. the first antenna structure 21 and the second antenna structure 22) be 0.7 to 1 times of wavelength, or make the distance between two antenna structures (e.g. the third antenna structure 31 and the fourth antenna structure 32) in the second antenna assembly 3 (e.g. the third antenna structure 31 and the fourth antenna structure 32) be 0.7 to 1 times of wavelength, so as to increase the variation space of the design and improve the gain.

The above disclosure is only a preferred and feasible embodiment of the present invention, and is not intended to limit the scope of the claims of the present invention, so that all the equivalent technical changes made by the contents of the specification and the drawings are included in the scope of the claims of the present invention.

Claims (10)

1. An antenna device, characterized in that the antenna device comprises:

a substrate assembly including a first substrate, a second substrate, a third substrate and a fourth substrate;

a first antenna assembly, the first antenna assembly including a first antenna structure and a second antenna structure, the first antenna structure being disposed on the first substrate, the second antenna structure being disposed on the second substrate, wherein the first antenna structure includes a first radiating metal member, a second radiating metal member corresponding to the first radiating metal member and a first feeding metal member, and the second antenna structure includes a third radiating metal member and a fourth radiating metal member corresponding to the third radiating metal member;

a second antenna element, the second antenna element including a third antenna structure and a fourth antenna structure, the third antenna structure being disposed on the third substrate, the fourth antenna structure being disposed on the fourth substrate, wherein the third antenna structure includes a fifth radiating metallic element, a sixth radiating metallic element corresponding to the fifth radiating metallic element, and a second feeding metallic element, and the fourth antenna structure includes a seventh radiating metallic element and an eighth radiating metallic element corresponding to the seventh radiating metallic element;

a first feeding wire set, wherein the first feeding wire set includes a first inner conductor and a first outer conductor, the first inner conductor is electrically connected to the first feeding metal piece and the fourth radiation metal piece, and the first outer conductor is electrically connected to the first radiation metal piece, the second radiation metal piece and the third radiation metal piece; and

a second feeding wire set, wherein the second feeding wire set includes a second inner conductor and a second outer conductor, the second inner conductor is electrically connected to the second feeding metal piece and the eighth radiating metal piece, and the second outer conductor is electrically connected to the fifth radiating metal piece, the sixth radiating metal piece and the seventh radiating metal piece;

the center frequencies of the operating frequency bands generated by the first antenna structure and the second antenna structure are respectively less than the center frequencies of the operating frequency bands generated by the third antenna structure and the fourth antenna structure.

2. The antenna device according to claim 1, wherein the first substrate includes a first surface and a second surface corresponding to the first surface, the second substrate includes a third surface and a fourth surface corresponding to the third surface, the third substrate includes a fifth surface and a sixth surface corresponding to the fifth surface, the fourth substrate includes a seventh surface and an eighth surface corresponding to the seventh surface; wherein the first antenna structure is disposed on the first surface, the second antenna structure is disposed on the third surface, the third antenna structure is disposed on the fifth surface, and the fourth antenna structure is disposed on the seventh surface.

3. The antenna device according to claim 2, wherein the first substrate, the second substrate, the third substrate, and the fourth substrate are independent from each other.

4. The antenna device according to claim 3, wherein a direction in which the first surface faces and a direction in which the third surface faces are the same as each other, a direction in which the fifth surface faces and a direction in which the seventh surface faces are the same as each other, and the directions in which the first surface faces and the fifth surface faces are different from each other.

5. The antenna device according to claim 3, wherein a direction in which the first surface faces and a direction in which the third surface faces are the same as each other, a direction in which the fifth surface faces and a direction in which the seventh surface faces are the same as each other, and a direction in which the first surface faces and a direction in which the fifth surface faces are the same as each other.

6. The antenna device according to claim 2, wherein the first substrate, the second substrate, the third substrate, and the fourth substrate are connected to each other, and the first substrate, the second substrate, the third substrate, and the fourth substrate are integrally molded to form the substrate assembly.

7. The antenna device according to claim 6, wherein a direction in which the first surface faces and a direction in which the third surface faces are the same as each other, a direction in which the fifth surface faces and a direction in which the seventh surface faces are the same as each other, and a direction in which the first surface faces and a direction in which the fifth surface faces are the same as each other.

8. The antenna device of claim 1, wherein the first antenna structure is capable of generating an operating band in a frequency range from 2400MHz to 2500MHz, and the second antenna structure is capable of generating an operating band in a frequency range from 2400MHz to 2500 MHz; wherein the third antenna structure is capable of generating an operating frequency band in a frequency range between 4900MHz and 5900MHz, and the fourth antenna structure is capable of generating an operating frequency band in a frequency range between 4900MHz and 5900 MHz.

9. The antenna device according to claim 2, wherein the antenna device further comprises: a first cladding layer, a second cladding layer, a third cladding layer and a fourth cladding layer, wherein the first cladding layer is disposed on the first surface and covers a portion of the first antenna structure, the second cladding layer is disposed on the third surface and covers a portion of the second antenna structure, the third cladding layer is disposed on the fifth surface and covers a portion of the third antenna structure, and the fourth cladding layer is disposed on the seventh surface and covers a portion of the fourth antenna structure.

10. The antenna device of claim 1, wherein the first antenna element further comprises a fifth antenna structure, the fifth antenna structure comprises a ninth radiating metallic element, a tenth radiating metallic element corresponding to the ninth radiating metallic element and a third feeding metallic element.

Images