Antenna device

Abstract

The invention discloses an antenna device. The antenna device comprises a substrate assembly, a first metal structure, a second metal structure and a material structure. The substrate assembly comprises a strip line feed-in end for receiving an antenna signal. The first metal structure is disposed on one side of the substrate assembly. The second metal structure is arranged on one side of the substrate assembly and is opposite to the first metal structure. The material structure is disposed between the first metal structure and the second metal structure. An antenna signal is transmitted through the substrate assembly, the material structure, the first metal structure and the second metal structure.

Description

Technical Field

[0001] The present invention relates to an antenna device, and in particular to an antenna device with a simple structure. Background Art

[0002] As mobile communication networks evolve into the current 5G generation, the practical application and widespread adoption of the millimeter wave (mmWave) band in Frequency Range 2 (FR2) are crucial, in addition to the limited sub-6 GHz bandwidth in Frequency Range 1 (FR1). 5G mmWave modules in mobile devices typically utilize an Antenna in Package (AiP) design.

[0003] Today's packaged antennas are mostly suitable for a single frequency band and have limited bandwidth. Therefore, to meet the requirements of 5G millimeter wave multi-bands, at least two antenna units are required (e.g., two antennas for 28 GHz and 39 GHz). This is relatively expensive in terms of installation and equipment design costs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an antenna device to address the deficiencies of the prior art, comprising: a substrate assembly including a stripline feed end for receiving an antenna signal; a first metal structure disposed on one side of the substrate assembly; a second metal structure disposed on one side of the substrate assembly, opposite to the first metal structure; and a material structure disposed between the first metal structure and the second metal structure; wherein the antenna signal is transmitted through the substrate assembly, the material structure, the first metal structure, and the second metal structure.

[0005] Optionally, the first metal structure is a metal structure including a pointed cone structure, a first side, a second side and a third side of the first metal structure respectively include a first inclined plane, a second inclined plane and a third inclined plane, and together form a pointed cone structure, facing the second metal structure, the second metal structure is a nearly trapezoidal metal structure, and a first distance is included between the first metal structure and the second metal structure.

[0006] Optionally, there is a first taper distance between the pointed cone structure of the first metal structure and a bottom side of the first metal structure, the first slope extends from a position a first slope distance away from the bottom side of the first metal structure toward the front center of the first metal structure, the second slope extends forward from a position a second slope distance away from the bottom side of the first metal structure, the third slope extends from a position a third slope distance away from the bottom side of the first metal structure toward the front center of the first metal structure, and the first metal structure also includes a first structure width.

[0007] Optionally, a cross-section of the second metal structure is nearly trapezoidal, and the cross-section of the second metal structure includes at least a top side, a front side, a bottom side, a base side and a slope. The top side of the second metal structure is arranged opposite to the bottom side, the front side of the second metal structure is arranged opposite to the base side of the second metal structure, the slope of the second metal structure is arranged between the top side and the front side of the second metal structure, the top side includes a top side width, the front side includes a front side height, the bottom side includes a bottom side width, the base side includes a base height, and the second metal structure also includes a second structure width.

[0008] Optionally, the substrate assembly includes: a first substrate, a second substrate, a third substrate and a fourth substrate, the first substrate is arranged on the second substrate, the second substrate is arranged on the third substrate, and the third substrate is arranged on the fourth substrate; wherein, the first substrate includes a first V-shaped opening, the second substrate includes a second V-shaped opening and a second rectangular opening, the third substrate includes a third V-shaped opening and a stripline feeding end, the first substrate, the second substrate, the third substrate and the fourth substrate each include a plurality of metal holes, the first V-shaped opening, the second V-shaped opening and the third V-shaped opening are arranged opposite to each other, and the stripline feeding end is partially arranged below the second rectangular opening.

[0009] Optionally, the stripline feeding end includes at least one impedance matching line segment, the first V-shaped opening, the second V-shaped opening, and the third V-shaped opening have the same size and are arranged opposite to each other. After the antenna signal is fed by the stripline feeding end, the energy of the antenna signal enters the material structure through the third V-shaped opening, the second V-shaped opening, and the first V-shaped opening, and then passes through the relatively arranged covering structure of the first metal structure and the second metal structure to transfer the energy to the air.

[0010] Optionally, a material dielectric constant of the material structure is greater than a circuit board dielectric constant of the substrate assembly.

[0011] Optionally, the material structure is poured and solidified between the first metal structure and the second metal structure by a solid-state epoxy molding method, and covers the first V-shaped opening.

[0012] Optionally, the pointed cone structure of the first metal structure has a V-shaped tip, and the V-shaped tip is aligned with the first V-shaped opening.

[0013] Optionally, a distance value of the first distance is 0.15mm, a distance value of the first cone distance is 3mm, a distance value of the first bevel distance is 1.4mm, a distance value of the second bevel distance is 0.75mm, a distance value of the third bevel distance is 1.4mm, a width value of the first structure width is 5.5mm, a width value of the top side width of the second metal structure is 0.25mm, a height value of the front side height of the second metal structure is 2.9mm, a width value of the bottom side width of the second metal structure is 0.75mm, a height value of the base height of the second metal structure is 3.4mm, a width value of the second structure width of the second metal structure is 5.5mm, the impedance matching segment includes at least a 50 ohm impedance stripline, and the impedance matching segment also includes a 65 ohm impedance matching segment or a 30 ohm impedance matching segment.

[0014] One of the beneficial effects of the present invention is that the antenna device provided by the present invention, wherein a single antenna device can provide an effective broadband range of 24GHz to 43.5GHz, meeting the requirements of the 5G millimeter wave frequency bands Band n257, n258, n259, and n260. In addition, the dielectric loss of the antenna device of the present invention itself is lower than the loss of a general patch antenna, and the higher the frequency, the more obvious it is. Furthermore, the antenna device of the present invention has a simple structure and can be manufactured by only combining a first metal structure, a second metal structure, and a material structure (Epoxy Molding). It occupies a small area, which is conducive to configuring multiple antenna devices together to form an antenna device array.

[0015] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and illustration and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 1 is a schematic diagram of an antenna device according to a first embodiment of the present invention.

[0017] Figure 2 yes Figure 1Exploded view of the antenna assembly.

[0018] Figure 3 yes Figure 1 A side view of the first metal structure, the second metal structure, and the material structure of the antenna device.

[0019] Figure 4 yes Figure 1 A top view of the antenna device.

[0020] Figure 5 FIG. 1 is a side view showing the electric field intensity distribution of the antenna device according to the first embodiment of the present invention.

[0021] Figure 6 FIG. 4 is a side view of the electric field intensity distribution in another direction of the antenna device according to the first embodiment of the present invention.

[0022] Figure 7 FIG. 1 is a 3D antenna pattern simulation diagram of the antenna device according to the first embodiment of the present invention.

[0023] Figure 8 FIG. 4 is the antenna pattern diagram of the antenna device according to the first embodiment of the present invention on the E-plane.

[0024] Figure 9 FIG. 4 is the antenna pattern of the antenna device according to the first embodiment of the present invention on the H plane.

[0025] Figure 10 FIG. 4 is an S-parameter simulation diagram of the antenna device according to the first embodiment of the present invention.

[0026] Figure 11 FIG. 1 is a schematic diagram of an antenna device according to a first embodiment of the present invention and a millimeter wave module.

[0027] Figure 12 FIG1 is a schematic diagram of an antenna device equipped with a millimeter wave module according to a first embodiment of the present invention. DETAILED DESCRIPTION

[0028] The following is an explanation of the implementation of the "antenna device" disclosed in the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following embodiments will further explain the relevant technical content of the present invention in detail, but the disclosed content is not intended to limit the scope of protection of the present invention. In addition, the term "or" used in this article may include any one or more combinations of the associated listed items depending on the actual situation.

[0029] [First embodiment]

[0030] See also Figure 1 、 Figure 2 、 Figure 3 as well as Figure 4 , Figure 1 FIG. 1 is a schematic diagram of an antenna device according to a first embodiment of the present invention. Figure 2 yes Figure 1 Exploded view of the antenna assembly. Figure 3 yes Figure 1 A side view of the first metal structure, the second metal structure, and the material structure of the antenna device. Figure 4 yes Figure 1 A top view of the antenna device.

[0031] This embodiment provides an antenna device AT1 , which includes a substrate assembly CB1 , a first metal structure M1 , a second metal structure M2 , and a material structure M3 .

[0032] The substrate assembly CB1 includes at least one stripline feed terminal ST1, which receives antenna signals. A first metal structure M1 is disposed on one side of the substrate assembly CB1. A second metal structure M2 is disposed on one side of the substrate assembly CB1, opposite the first metal structure M1. A material structure M3 is disposed between the first and second metal structures M1 and M2.

[0033] The antenna signal is transmitted through the substrate assembly CB1 , the material structure M3 , the first metal structure M1 , and the second metal structure M2 .

[0034] The first metal structure M1 is a metal structure including a conical structure M11. A first side, a second side, and a third side of the first metal structure M1 respectively include a first inclined surface M1S1, a second inclined surface M1S2, and a third inclined surface M1S3, which together form the conical structure M11 facing the second metal structure M2. The second metal structure M2 is a nearly trapezoidal metal structure. A first distance D1 is defined between the first metal structure M1 and the second metal structure M2. The value of the first distance D1 is 0.15 mm.

[0035] A first taper distance MD11 is defined between the taper structure M11 of the first metal structure M1 and a base side M1B1 of the first metal structure M1. The first taper distance MD11 is 3 mm. The first slope M1S1 extends from a position a first slope distance DS1 from the base side M1B1 of the first metal structure M1 toward the front center of the first metal structure M1. The first slope distance DS3 is 1.4 mm.

[0036] The third bevel M1S3 extends from a position a third bevel distance DS3 away from the base side M1B1 of the first metal structure M1 toward the front center of the first metal structure. The third bevel distance DS3 is 1.4 mm. That is, the third bevel M1S3 is disposed opposite the first bevel M1S1. In this embodiment, the third bevel distance DS3 is the same as the first bevel distance DS1.

[0037] In this embodiment, the first metal structure M1 includes a base portion MB1 . The base portion MB1 includes a thickness MBT1 . A thickness value of the thickness MBT1 is 0.75 mm.

[0038] The second slope M1S2 extends forward from a position extending forward by an extension distance EXD1 from the top side of the base portion MB1 and a second slope distance DS2 from the base side M1B1. The extension distance EXD1 is 0.7 mm. The second slope distance DS2 is 0.75 mm.

[0039] The first metal structure M1 also includes a bottom side M1BN1. The bottom side M1BN1 of the first metal structure M1 is a plane. The first metal structure M1 includes a first structure width MW1 and a first structure height MH1. The first structure width MW1 has a width value of 5.5 mm. The first structure height MH1 is 3.5 mm.

[0040] The second metal structure M2 has a nearly trapezoidal shape when viewed from the side. It includes a top side M2U1, a front side M2F1, a bottom side M2BN1, a base side M2B1, and an inclined surface M2S1. The top side M2U1 and the bottom side M2BN1 are disposed opposite each other. The front side M2F1 of the second metal structure M2 is disposed opposite the base side M2B1 of the second metal structure M2. The inclined surface M2S1 is disposed between the top side M2U1 and the front side M2F1.

[0041] The top side M2U1 includes a top side width UW1 . A width value of the top side width UW1 is 0.25 mm. The front side M2F1 includes a front side height FH1 . A height value of the front side height FH1 is 2.9 mm.

[0042] The bottom side M2BN1 includes a bottom side width BNW1. The bottom side width BNW1 has a width of 0.75 mm. The base side M2B1 includes a base height BH1. The base height BH1 has a height of 3.4 mm. The second metal structure M2 also includes a second structure width MW2. The second structure width MW2 has a width of 5.5 mm.

[0043] The substrate assembly CB1 includes a first substrate CB11, a second substrate CB12, a third substrate CB13, and a fourth substrate CB14. The first substrate CB11 is disposed on the second substrate CB12. The second substrate CB12 is disposed on the third substrate CB13. The third substrate CB13 is disposed on the fourth substrate CB14. The first substrate CB11 includes a first V-shaped opening CBV1. The second substrate CB12 includes a second V-shaped opening CBV2 and a second rectangular opening CBR2. The second rectangular opening CBR2 is located at the V-shaped tip of the second V-shaped opening CBV2. The third substrate CB13 includes a third V-shaped opening CBV3 and a stripline feed terminal ST1. The stripline feed terminal ST1 is located at the V-shaped tip of the third V-shaped opening CBV3. The first, second, third, and fourth substrates CB11, CB12, CB13, and CB14 each include a plurality of through-metal vias (VA). The first, second, and third V-shaped openings CBV1, CBV2, and CBV3 are arranged opposite each other. The stripline feeding terminal ST1 is partially disposed below the second rectangular opening CBR2.

[0044] The stripline feed terminal ST1 includes an impedance-matching segment. This includes a 50-ohm impedance stripline, a 65-ohm impedance-matching segment, and a 30-ohm impedance-matching segment. The first, second, and third V-shaped openings CBV1, CBV2, and CBV3 are of identical size and positioned opposite each other. After the antenna signal is fed into the stripline feed terminal ST1, the energy of the antenna signal enters the material structure M3 through the third, second, and first V-shaped openings CBV2, CBV1, and CBV3. The antenna signal then passes through the opposing cladding structures of the first and second metal structures M1, M2, transferring the energy to the air.

[0045] The material structure M3 can be filled to a height of 3.2 mm, not exceeding the maximum height of the first and second metal structures M1, M2 (3.4 mm). The filling height of the material structure M3 can be adjusted based on actual needs and is not limited in the present invention. Furthermore, the sides of the material structure M3 can be aligned with the sides of the first and second metal structures M1, M2 using a jig.

[0046] The dielectric constant (Dk=5) of the material structure M3 is greater than the dielectric constant (Dk=4.3) of the circuit board of the substrate assembly CB1. The dielectric constant of the material structure M3 is 5. The dielectric constant of the circuit board of the substrate assembly CB1 is 4.3.

[0047] The material structure M3 is poured and solidified between the first metal structure M1 and the second metal structure M2 by a solid-state epoxy molding method, and covers the first V-shaped opening CBV1 .

[0048] Viewed from above, the tip of the conical structure M11 of the first metal structure M1 is aligned with the V-shaped tip of the first V-shaped opening CBV1. Furthermore, in this embodiment, the first metal structure M1 and the second metal structure M2 are mounted using surface mount technology. Furthermore, the first metal structure M1 and the second metal structure may be metal blocks or hollow metal structures.

[0049] See also Figure 5 as well as Figure 6 , Figure 5 FIG. 1 is a side view showing the electric field intensity distribution of the antenna device according to the first embodiment of the present invention. Figure 6 FIG. 4 is a side view of the electric field intensity distribution in another direction of the antenna device according to the first embodiment of the present invention.

[0050] Depend on Figure 5 as well as Figure 6 The electric field intensity distribution diagram shows that when electromagnetic waves are transmitted, the antenna signal enters from the inner stripline feed terminal ST1. The antenna signal energy is then transferred to the material structure M3 through the opening structure in the inner layer of the substrate assembly CB1. The antenna energy is then transferred to the air through the opposing cladding structure of the first metal structure M1 and the second metal structure M2.

[0051] See also Figure 7 、 Figure 8 as well as Figure 9 , Figure 7 FIG. 1 is a 3D antenna pattern simulation diagram of the antenna device according to the first embodiment of the present invention. Figure 8 FIG. 4 is the antenna pattern diagram of the antenna device according to the first embodiment of the present invention on the E-plane. Figure 9 FIG. 4 is the antenna pattern of the antenna device according to the first embodiment of the present invention on the H plane.

[0052] See also Figure 10 , Figure 10 : is an S parameter simulation diagram of the antenna device according to the first embodiment of the present invention. Figure 10 The S-parameter plot clearly shows that the antenna device AT1 provided in this embodiment provides an effective broadband range of 24 GHz to 43.5 GHz, meeting the 5G millimeter wave frequency band. The required return loss in bands n257, n258, n259, and n260 all meets the required return loss of 10 dB or above. This means that the antenna device AT1 provided in this embodiment is well suited for applications in the 5G millimeter wave and higher frequency bands.

[0053] Please refer to Table 1 below. As shown in Table 1, the peak realized gain of the antenna device AT1 of this embodiment can reach over 7.5 dBi at 37 GHz. Without considering feed-end mismatch, the radiation efficiency can reach over 73%.

[0054] Table 1

[0055]

[0056] Please refer to Figure 11 as well as Figure 12 , Figure 11 FIG. 1 is a schematic diagram of an antenna device according to a first embodiment of the present invention and a millimeter wave module. Figure 12 FIG. 4 is another schematic diagram of the antenna device according to the first embodiment of the present invention being coupled with a millimeter wave module.

[0057] exist Figure 11 as well as Figure 12 In the embodiment, multiple antenna devices AT1 can be arranged adjacent to each other, and the substrate assembly CB1 of the multiple antenna devices AT1 can be arranged on the same circuit board. In addition, the millimeter wave module MMW1 can be arranged on the same side of the antenna device AT1 ( Figure 12 ) or the opposite side ( Figure 11 In this embodiment, a plurality of antenna devices AT1 are arranged at intervals.

[0058] [Beneficial Effects of Embodiments]

[0059] One of the beneficial effects of the present invention is that the antenna device provided by the present invention, wherein a single antenna device can provide an effective broadband range of 24GHz to 43.5GHz, meeting the requirements of the 5G millimeter wave frequency bands Band n257, n258, n259, and n260. In addition, the dielectric loss of the antenna device of the present invention itself is lower than the loss of a general patch antenna, and the higher the frequency, the more obvious it is. Furthermore, the antenna device of the present invention has a simple structure and can be manufactured by only combining a first metal structure, a second metal structure, and a material structure (Epoxy Molding). It occupies a small area, which is conducive to configuring multiple antenna devices together to form an antenna device array.

[0060] The contents disclosed above are only preferred feasible embodiments of the present invention and are not intended to limit the claims of the present invention. Therefore, any equivalent technical changes made using the contents of the present invention's description and drawings are included in the claims of the present invention.

Claims

1. An antenna device, characterized in that: include: a substrate assembly including a stripline feed-in terminal for receiving an antenna signal; a first metal structure, disposed on one side of the substrate assembly; a second metal structure, disposed on one side of the substrate assembly and opposite to the first metal structure; a material structure disposed between the first metal structure and the second metal structure; The antenna signal is transmitted through the substrate assembly, the material structure, the first metal structure and the second metal structure.

2. The antenna device according to claim 1, wherein The first metal structure is a metal structure including a pointed cone structure, wherein a first side, a second side and a third side of the first metal structure respectively include a first inclined plane, a second inclined plane and a third inclined plane, and together form a pointed cone structure facing the second metal structure. The second metal structure is a nearly trapezoidal metal structure, and a first distance is included between the first metal structure and the second metal structure.

3. The antenna device according to claim 2, wherein: There is a first taper distance between the pointed cone structure of the first metal structure and a bottom side of the first metal structure, the first slope extends from a position a first slope distance away from the bottom side of the first metal structure toward the front center of the first metal structure, the second slope extends forward from a position a second slope distance away from the bottom side of the first metal structure, the third slope extends from a position a third slope distance away from the bottom side of the first metal structure toward the front center of the first metal structure, and the first metal structure also includes a first structure width.

4. The antenna device according to claim 3, wherein: A cross-section of the second metal structure is nearly trapezoidal, and the cross-section of the second metal structure includes at least a top side, a front side, a bottom side, a base side and an inclined surface. The top side of the second metal structure is arranged opposite to the bottom side, the front side of the second metal structure is arranged opposite to the base side of the second metal structure, the inclined surface of the second metal structure is arranged between the top side and the front side of the second metal structure, the top side includes a top side width, the front side includes a front side height, the bottom side includes a bottom side width, the base side includes a base height, and the second metal structure also includes a second structure width.

5. The antenna device according to claim 4, wherein: The substrate assembly comprises: A first substrate, a second substrate, a third substrate, and a fourth substrate, wherein the first substrate is disposed on the second substrate, the second substrate is disposed on the third substrate, and the third substrate is disposed on the fourth substrate; wherein the first substrate includes a first V-shaped opening, the second substrate includes a second V-shaped opening and a second rectangular opening, the third substrate includes a third V-shaped opening and a stripline feed end, the first substrate, the second substrate, the third substrate, and the fourth substrate each include a plurality of metal holes, the first V-shaped opening, the second V-shaped opening, and the third V-shaped opening are disposed opposite to each other, and the stripline feed end is partially disposed below the second rectangular opening.

6. The antenna device according to claim 5, characterized in that The stripline feeding end includes at least one impedance matching line segment. The first V-shaped opening, the second V-shaped opening, and the third V-shaped opening have the same size and are arranged opposite to each other. After the antenna signal is fed by the stripline feeding end, the energy of the antenna signal enters the material structure through the third V-shaped opening, the second V-shaped opening, and the first V-shaped opening, and then passes through the covering structure in which the first metal structure and the second metal structure are arranged opposite to each other, thereby transferring the energy to the air.

7. The antenna device according to claim 6, wherein: A material dielectric constant of the material structure is greater than a circuit board dielectric constant of the substrate assembly.

8. The antenna device according to claim 7, wherein: The material structure is poured and solidified between the first metal structure and the second metal structure by a solid-state molding method, and covers the top of the first V-shaped opening.

9. The antenna device according to claim 8, wherein The conical structure of the first metal structure has a V-shaped tip, and the V-shaped tip is aligned with the first V-shaped opening.

10. The antenna device according to claim 9, wherein: A distance value of the first distance is 0.15mm, a distance value of the first cone distance is 3mm, a distance value of the first bevel distance is 1.4mm, a distance value of the second bevel distance is 0.75mm, a distance value of the third bevel distance is 1.4mm, a width value of the first structure width is 5.5mm, a width value of the top side width of the second metal structure is 0.25mm, a height value of the front side height of the second metal structure is 2.9mm, a width value of the bottom side width of the second metal structure is 0.75mm, a height value of the base height of the second metal structure is 3.4mm, a width value of the second structure width of the second metal structure is 5.5mm, the impedance matching segment includes at least a 50 ohm impedance stripline, and the impedance matching segment also includes a 65 ohm impedance matching segment or a 30 ohm impedance matching segment.

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