Antenna structure and heat dissipation device

Abstract

The invention discloses an antenna structure and a heat dissipation device. The antenna structure is arranged on a metal piece and comprises a first slotted hole, a second slotted hole, a grounding part and a short circuit part. The first slotted hole is formed on the metal piece along an axis direction and is used for feeding in a signal; the second slotted hole is formed in the metal piece along the axis direction, and the second slotted hole and the first slotted hole are separated by a distance in the axis direction; the grounding part is coupled with the metal piece; the short circuit portion crosses the second slot and is coupled to the grounding portion. Therefore, the antenna structure and the heat dissipation device can solve the problem that the position of the equipment antenna is limited and improve the bandwidth range of the antenna.

Description

Technical Field

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

[0002] As the demand for wireless transmission increases, general electronic devices need to be equipped with antennas for wireless transmission. However, in recent years, in response to market demand, the appearance of electronic devices has gradually become thinner and lighter, and the size of the antenna structure in electronic devices must also be reduced accordingly. In addition, the antenna structure in existing electronic devices cannot meet the requirements of the Wi-Fi 6E frequency band.

[0003] In view of this, designing an antenna structure that can provide multiple frequency bands in a limited device space has become an important issue faced by relevant industries in antenna structure design.

[0004] Therefore, it is necessary to provide an antenna structure and a heat dissipation device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an antenna structure and a heat dissipation device. Through the structural design of the antenna and the feeding technology, the antenna can be integrated in a limited space while improving the antenna bandwidth range, thereby solving the problem of limited antenna position and lack of frequency band in existing equipment.

[0006] According to an embodiment of the structural aspect of the present invention, an antenna structure is provided, which is arranged on a metal member, and the antenna structure includes a first slot, a second slot, a grounding portion, and a short-circuit portion. The first slot is formed on the metal member along an axial direction for feeding a signal. The second slot is formed on the metal member along the axial direction, and the second slot is spaced apart from the first slot in the axial direction by a distance. The grounding portion is coupled to the metal member. The short-circuit portion crosses the second slot and is coupled to the grounding portion.

[0007] According to another embodiment of the structural aspect of the present invention, an antenna structure is provided, which is arranged on a metal member, and the antenna structure includes a first slot, a second slot, a grounding portion, and a short-circuit portion. The first slot is formed on the metal member for feeding a signal, and the first slot has a first length. The second slot is formed on the metal member, and has a second length, which is greater than the first length. The grounding portion is coupled to the metal member. The short-circuit portion crosses the second slot and is coupled to the grounding portion.

[0008] According to another embodiment of the structural state of the present invention, a heat dissipation device is provided, comprising a heat dissipation device body and an antenna unit. The antenna unit is connected to the heat dissipation device body and comprises a metal part and an antenna structure. The antenna structure is arranged on the metal part and comprises a first slot, a second slot, a grounding portion and a short-circuit portion. The first slot is formed on the metal part along an axial direction for feeding a signal. The second slot is formed on the metal part along the axial direction, and the second slot is separated from the first slot by a distance in the axial direction. The grounding portion is coupled to the metal part. The short-circuit portion is coupled to the grounding portion across the second slot. The first slot and the second slot are integrally formed on the metal part. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic diagram illustrating an antenna structure according to a first embodiment of the present invention;

[0010] Figure 2 Draw according to Figure 1 Schematic diagram of frequency path 1, frequency path 2, frequency path 3 and frequency path 4 of the antenna structure;

[0011] Figure 3 Draw according to Figure 1 Schematic diagram of frequency path five and frequency path six of the antenna structure;

[0012] Figure 4 Draw according to Figure 1 Schematic diagram of frequency path seven, frequency path eight and frequency path nine of the antenna structure;

[0013] Figure 5 Draw according to Figure 1 The overall bandwidth waveform of the frequency and return loss of the antenna structure;

[0014] Fig. 6A A schematic diagram illustrating a heat dissipation device according to a second embodiment of the present invention; and

[0015] Figure 6B A schematic diagram of a heat dissipation device according to a third embodiment of the present invention is shown.

[0016] Main component symbols:

[0017] 10.10a Heat sink

[0018] 100, 420 antenna structure

[0019] 110 First slot

[0020] 111 Part 1

[0021] 112 Part 2

[0022] 120 Second slot

[0023] 130 Grounding

[0024] 140 Short circuit

[0025] 150 First Radiation

[0026] 151 First Branch Road

[0027] 152 Second Branch Road

[0028] 160 Second Radiation

[0029] 170 Feeding Department

[0030] 200, 410 metal parts

[0031] 300 Radiator body

[0032] 310 Housing

[0033] 320 heat sink fins

[0034] 400 antenna elements

[0035] d Spacing

[0036] L axis direction

[0037] L1 First Length

[0038] L2 Second length

[0039] S Signal Source

[0040] w1 first width

[0041] w2 second width DETAILED DESCRIPTION

[0042] See also Figure 1 , Figure 1 The schematic diagram of the antenna structure 100 according to the first embodiment of the present invention is shown. The antenna structure 100 is disposed on a metal member 200, and the antenna structure 100 includes a first slot 110, a second slot 120, a grounding portion 130, a short-circuit portion 140, a first radiating portion 150, a second radiating portion 160, and a feeding portion 170. The first slot 110 and the second slot 120 are formed on the metal member 200, the grounding portion 130 is coupled to the metal member 200, the short-circuit portion 140 is coupled to the grounding portion 130 and the second radiating portion 160, and the feeding portion 170 is coupled to the first radiating portion 150.

[0043] In the first embodiment, the grounding portion 130, the short-circuit portion 140, the first radiating portion 150, the second radiating portion 160, and the feeding portion 170 may be formed on a surface of a carrier such as a flexible printed circuit (FPC), but the present invention is not limited thereto. In other embodiments, the grounding portion 130 may be formed on the metal member 200. In the first embodiment, the positions of the grounding portion 130, the short-circuit portion 140, the first radiating portion 150, the second radiating portion 160, and the feeding portion 170 on the carrier correspond to the positions of the first slot 110 and the second slot 120 on the metal member 200, so that the relative positions of the carrier and the metal member 200 are fixed to form the antenna structure 100.

[0044] In the first embodiment, the metal member 200 can be disposed on the surface of a printed circuit board (PCB), or integrally formed in the housing structure of an electronic device (such as a notebook computer, a personal digital assistant or other portable electronic device), but the present invention is not limited thereto. The first slot 110 and the second slot 120 are closed slots. The grounding portion 130 is a ground copper foil, and is coupled to a system ground of the electronic device, but the present invention is not limited thereto.

[0045] Reference Figure 1 As shown, the first slot 110 and the second slot 120 are formed on the metal member 200 along an axial direction L. The first slot 110 is used for feeding a signal, and the second slot 120 is separated from the first slot 110 by a spacing d in the axial direction L. The first slot 110 has a first length L1 and a first width w1, and the second slot 120 has a second length L2 and a second width w2. The second length L2 is greater than the first length L1, the first length L1 and the second length L2 are greater than the spacing d, and the first width w1 is equal to the second width w2. In the first embodiment, the first length L1 is 45 mm, the second length L2 is 50 mm, and the spacing d is 2 mm; the first width w1 and the second width w2 are 2 mm, but the present invention is not limited thereto.

[0046] Reference Figure 1As shown, the short-circuit portion 140 crosses the second slot 120 perpendicular to the axis direction L, one end of the short-circuit portion 140 is coupled to the grounding portion 130, and the other end is coupled to the second radiating portion 160. The first radiating portion 150 and the second radiating portion 160 are parallel to the axis direction L, the second radiating portion 160 extends from the second slot 120 toward the first slot 110, and is located on one side of the first radiating portion 150, and the first radiating portion 150 is located between the second radiating portion 160 and the first slot 110. The length of the second radiating portion 160 is greater than the length of the first radiating portion 150, and the length of the second radiating portion 160 is less than the first length L1. In the first embodiment, the length of the first radiating portion 150 is 10 mm, and the length of the second radiating portion 160 is 27 mm, but the present invention is not limited thereto. In other embodiments, the short-circuit portion 140 crosses the second slot 120 along a direction intersecting the axial direction L. In other words, the short-circuit portion 140 extends from one end of the second radiation portion 160 toward the ground portion 130 and is not parallel to the axial direction L.

[0047] Reference Figure 1 As shown, the feeding portion 170 partially overlaps the first slot 110 at the vertical projection of the metal member 200, and the feeding portion 170 is electrically connected to a coaxial transmission line (not shown) and coupled to a signal source S for feeding a signal. Specifically, the signal is fed into the first radiating portion 150 by the feeding portion 170, and is coupled to the second radiating portion 160 after being fed into the first radiating portion 150, and resonance is formed at the first slot 110 and the second slot 120 to generate transmission signals of multiple frequency bands.

[0048] Thus, the antenna structure 100 of the present invention utilizes the position configuration of the first slot 110, the second slot 120, the short-circuit portion 140, the first radiating portion 150, the second radiating portion 160 and the feeding portion 170 to stimulate transmission signals of multiple frequency bands, thereby providing a wider bandwidth and better antenna efficiency.

[0049] See also Figure 2 , Figure 3 , Figure 4 as well as Figure 5 ,in Figure 2 Draw according to Figure 1 Schematic diagram of frequency path 1, frequency path 2, frequency path 3 and frequency path 4 of the antenna structure 100; Figure 3 Draw according to Figure 1 Schematic diagram of frequency path five and frequency path six of the antenna structure 100; Figure 4 Draw according to Figure 1 Schematic diagram of frequency path seven, frequency path eight and frequency path nine of the antenna structure 100; and Figure 5 Draw according to Figure 1 FIG. 1 is a waveform diagram of the overall bandwidth of the frequency and return loss of the antenna structure 100. FIG.

[0050] Reference Figure 2 and Figure 5 As shown, the antenna structure 100 provides frequency bands of frequency path 1, frequency path 2, frequency path 3 and frequency path 4 through the first radiating portion 150. The first radiating portion 150 includes a first branch 151 and a second branch 152. After the signal is fed into the first radiating portion 150 by the feeding portion 170, the current is divided into two paths and moves to the two ends of the first radiating portion 150 respectively to form the first branch 151 and the second branch 152. The first slot 110 is cut off by the feeding portion 170 and is divided into a first part 111 and a second part 112. The first branch 151 uses its own length as the frequency path 1 of the radiation, and provides a resonant frequency between 7000 MHz and 7800 MHz. The first radiating portion 150 couples and excites the first part 111 to form a frequency path 2, and provides a resonant frequency between 5800 MHz and 6900 MHz. The first radiation portion 150 couples and excites the second portion 112 to form a frequency path three, and provides a resonant frequency between 6400 MHz and 7000 MHz. The second branch 152 uses its own length as a frequency path four for radiation, and provides a resonant frequency between 7800 MHz and 8000 MHz. The length of the first branch 151 is not equal to the length of the second branch 152; the length of the first portion 111 is not equal to the length of the second portion 112. In the first embodiment, the length of the first branch 151 is greater than the length of the second branch 152; the length of the first portion 111 is greater than the length of the second portion 112.

[0051] Thereby, the frequency path one through the first branch 151 itself can provide some high-frequency characteristics, the frequency path two formed by coupling and exciting the first part 111 through the first radiating portion 150 and the frequency path three formed by coupling and exciting the second part 112 can provide another part of high-frequency characteristics, and the frequency path four through the second branch 152 can provide Wi-Fi 6E characteristics.

[0052] Reference Figure 3 and Figure 5 As shown, the antenna structure 100 provides high-order modal frequency bands of two paths, namely, frequency path five and frequency path six, through the first radiating portion 150 and the second radiating portion 160. The first radiating portion 150 couples and excites the first slot 110 to form frequency path five, thereby providing a resonant frequency between 5100 MHz and 5300 MHz. The signal is fed into the first radiating portion 150 by the feeding portion 170 and then coupled to the second radiating portion 160. The second radiating portion 160 and the short-circuit portion 140 couple and excite the second slot 120 to form frequency path six, thereby providing a resonant frequency between 5300 MHz and 5800 MHz.

[0053] Thus, the frequency path 5 formed by coupling the first radiating portion 150 to excite the resonance of the entire first slot 110 can also provide Wi-Fi 6E characteristics. The frequency path 6 formed by coupling the second radiating portion 160 and the short-circuit portion 140 to excite the second slot 120 can provide another part of high-frequency characteristics.

[0054] Reference Figure 4 and Figure 5 As shown, the antenna structure 100 provides frequency bands of three paths, namely, frequency path seven, frequency path eight and frequency path nine, through the first radiating portion 150 and the second radiating portion 160. The signal is fed into the first radiating portion 150 by the feeding portion 170 and then coupled to the second radiating portion 160. The second radiating portion 160 and the short-circuit portion 140 use their lengths as the frequency path seven of the radiation, and together provide a resonant frequency between 2300 MHz and 2500 MHz. The first radiating portion 150 couples and excites the first slot 110 to form a frequency path eight, and provides a resonant frequency between 2350 MHz and 2500 MHz. The signal is fed into the first radiating portion 150 by the feeding portion 170 and then coupled to the second radiating portion 160. The second radiating portion 160 and the short-circuit portion 140 couple and excite the second slot 120 to form a frequency path nine, and provide a resonant frequency between 2400 MHz and 2600 MHz. Among them, the frequency band of frequency path five is the high-order mode of the frequency band of frequency path eight, and the frequency band of frequency path six is ​​the high-order mode of the frequency band of frequency path nine.

[0055] Thus, the frequency path 7 through the second radiating portion 160 and the short-circuit portion 140 can provide partial low-frequency characteristics. The frequency path 8 formed by the first radiating portion 150 coupling and exciting the first slot 110, and the frequency path 9 formed by the second radiating portion 160 and the short-circuit portion 140 coupling and exciting the second slot 120 can provide low-frequency characteristics with better radiation efficiency.

[0056] See also Figure 1 , Fig. 6A as well as Figure 6B , Fig. 6A A schematic diagram illustrating a heat dissipation device 10 according to a second embodiment of the present invention; and Figure 6B A schematic diagram of a heat dissipation device 10a according to a third embodiment of the present invention is shown. The heat dissipation device 10, 10a comprises a heat dissipation device body 300 and an antenna unit 400. The heat dissipation device body 300 comprises a housing 310 and a heat dissipation fin 320. The antenna unit 400 is connected to the heat dissipation device body 300, and comprises a metal member 410 and an antenna structure 420. The antenna structure 420 is disposed on the metal member 410, and comprises a first slot, a second slot, a grounding portion, and a short-circuit portion (not separately labeled). In the second and third embodiments, the antenna structure 420 and Figure 1The antenna structure 100 of the embodiment is the same and will not be described again.

[0057] The antenna unit 400 can be integrated with the heat sink body 300 in different ways according to the spatial configuration of the heat sink 10 or the heat sink 10a to overcome the problem of limited antenna position. Fig. 6A As shown, the metal member 410 is coupled to the housing 310. Figure 6B As shown, the metal member 410 is coupled to the heat sink fin 320. In the second and third embodiments, the heat sink 10, 10a is attached to an electronic device, and the heat sink 10, 10a can be a heat sink fan of a notebook computer, but the present invention is not limited thereto.

[0058] It can be seen from the above embodiments that the present invention has the following advantages: First, the antenna structure of the present invention utilizes the first slot, the second slot, the short-circuit portion, the first radiating portion, the second radiating portion and the feeding portion to positionally configure the antenna structure to excite transmission signals of multiple frequency bands; Second, the resonant frequency excited by the antenna structure of the present invention can meet the Wi-Fi 6E frequency band requirements and provide a wider bandwidth and better antenna efficiency; Third, the antenna structure of the present invention can be combined with the device to which it is attached according to the spatial configuration of the device, thereby overcoming the problem of limited antenna position.

[0059] Although the present invention has been disclosed in the form of an implementation method as above, it is not intended to limit the present invention. Any technician in this field should be able to make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the invention should be based on the scope defined by the attached claims.

Claims

1. An antenna structure, the antenna structure being disposed on a metal member, the antenna structure comprising: a first slot hole, formed on the metal member along an axial direction, for feeding a signal; a second slot hole, the second slot hole being formed on the metal member along the axis direction, the second slot hole being spaced apart from the first slot hole in the axis direction by a distance; a grounding portion coupled to the metal member; and A short-circuit portion spans across the second slot and is coupled to the ground portion.

2. The antenna structure according to claim 1, further comprising: a first radiation portion; as well as a second radiating portion, the second radiating portion being coupled to the short-circuit portion and extending from the second slot toward the first slot and being located at one side of the first radiating portion; The first radiation portion and the second radiation portion are arranged parallel to the axis direction, and the first radiation portion is located between the second radiation portion and the first slot. The antenna structure as claimed in claim 2 , wherein the length of the second radiating portion is greater than the length of the first radiating portion.

4. The antenna structure according to claim 2, further comprising: A feeding portion is disposed on the metal component and partially overlaps the first slot. The feeding portion is used to feed the signal.

5. The antenna structure as claimed in claim 4, wherein the first slot is cut off by the feeding portion and divided into a first portion and a second portion; in, The length of the first portion is not equal to the length of the second portion.

6. The antenna structure according to claim 5, wherein: The first radiation portion couples and excites the first portion to generate a resonance frequency between 5800 MHz and 6900 MHz; The first radiation portion couples and excites the second portion at a resonance frequency between 6400 MHz and 7000 MHz.

7. The antenna structure according to claim 2, wherein: The first radiation portion couples and excites a resonance frequency of a high-order mode of the first slot hole between 5100 MHz and 5300 MHz; The first radiation portion couples and excites the first slot to produce a resonance frequency between 2350 MHz and 2500 MHz; The second radiating portion and the short-circuit portion are coupled to excite a resonant frequency of a high-order mode of the second slot hole between 5300 MHz and 5800 MHz; The second radiation portion and the short-circuit portion are coupled to excite a resonance frequency of the second slot hole between 2400 MHz and 2600 MHz; The second radiation portion and the short-circuit portion together provide a resonance frequency between 2300 MHz and 2500 MHz.

8. The antenna structure as claimed in claim 2, wherein the first radiating portion comprises: A first branch circuit, the first branch circuit is used to provide a resonance frequency between 7000 MHz and 7800 MHz; as well as A second branch is used to provide a resonance frequency between 7800 MHz and 8000 MHz.

9. An antenna structure, the antenna structure being disposed on a metal member, the antenna structure comprising: a first slot formed on the metal member for feeding a signal, the first slot having a first length; a second slot formed on the metal member and having a second length greater than the first length; a grounding portion coupled to the metal member; and A short-circuit portion spans across the second slot and is coupled to the ground portion. 10 . The antenna structure as claimed in claim 9 , wherein the first slot and the second slot are formed on the metal member along an axial direction, and the second slot is spaced apart from the first slot by a distance in the axial direction.

11. The antenna structure according to claim 10, further comprising: a first radiation portion; as well as a second radiating portion, the second radiating portion being coupled to the short-circuit portion and extending from the second slot toward the first slot and being located at one side of the first radiating portion; The first radiation portion and the second radiation portion are arranged parallel to the axis direction, and the first radiation portion is located between the second radiation portion and the first slot. 12 . The antenna structure as claimed in claim 11 , wherein a length of the second radiating portion is greater than a length of the first radiating portion, and a length of the second radiating portion is less than the first length.

13. The antenna structure according to claim 11, further comprising: A feeding portion is disposed on the metal component and partially overlaps the first slot. The feeding portion is used to feed the signal.

14. The antenna structure as claimed in claim 13, wherein the first slot is cut off by the feeding portion and divided into a first portion and a second portion; in, The length of the first portion is not equal to the length of the second portion.

15. The antenna structure according to claim 14, wherein: The first radiation portion couples and excites the first portion to generate a resonance frequency between 5800 MHz and 6900 MHz; The first radiation portion couples and excites the second portion at a resonance frequency between 6400 MHz and 7000 MHz.

16. The antenna structure according to claim 11, wherein: The first radiation portion couples and excites a resonance frequency of a high-order mode of the first slot hole between 5100 MHz and 5300 MHz; The first radiation portion couples and excites the first slot to produce a resonance frequency between 2350 MHz and 2500 MHz; The second radiating portion and the short-circuit portion are coupled to excite a resonant frequency of a high-order mode of the second slot hole between 5300 MHz and 5800 MHz; The second radiation portion and the short-circuit portion are coupled to excite a resonance frequency of the second slot hole between 2400 MHz and 2600 MHz; The second radiation portion and the short-circuit portion together provide a resonance frequency between 2300 MHz and 2500 MHz.

17. The antenna structure as claimed in claim 11, wherein the first radiating portion comprises: A first branch circuit, the first branch circuit is used to provide a resonance frequency between 7000 MHz and 7800 MHz; as well as A second branch is used to provide a resonance frequency between 7800 MHz and 8000 MHz.

18. A heat dissipation device, comprising: A heat dissipation device body; as well as An antenna unit is connected to the heat dissipation device body and comprises: a metal part; and An antenna structure is disposed on the metal member and includes: a first slot hole, formed on the metal member along an axial direction, for feeding a signal; a second slot hole, the second slot hole being formed on the metal member along the axis direction, the second slot hole being spaced apart from the first slot hole in the axis direction by a distance; a grounding portion coupled to the metal member; and a short-circuit portion, the short-circuit portion spanning the second slot and coupled to the ground portion; Wherein, the first slot hole and the second slot hole are integrally formed on the metal component.

19. The heat dissipation device as claimed in claim 18, wherein the heat dissipation device body comprises: a housing; as well as a heat sink; The metal component is coupled to one of the housing and the heat dissipation fins.

20. The heat dissipation device according to claim 18, wherein the antenna structure further comprises: a first radiation portion; a second radiating portion, the second radiating portion being coupled to the short-circuit portion and extending from the second slot toward the first slot and being located at one side of the first radiating portion; as well as a feeding portion, the feeding portion being disposed on the metal member and partially overlapping the first slot, the feeding portion being used to feed the signal; The first radiation portion and the second radiation portion are arranged parallel to the axis direction, and the first radiation portion is located between the second radiation portion and the first slot.

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