Antenna structure and electronic device

Abstract

The invention discloses an antenna structure and an electronic device. The antenna structure is arranged on a radiator, the radiator comprises a plurality of fins, and the antenna structure comprises a feed-in source, a connecting piece and an antenna unit. The feed-in source is arranged between two adjacent fins; the connecting piece is connected with the feed-in source; the antenna unit comprises a radiation part, a first line segment, a second line segment and a third line segment; the radiation part is connected with the connector; one end of the first line segment is connected with the radiation part; one end of the second line segment is connected with the radiation part, and the second line segment and the first line segment are arranged along a straight line; a distance is formed between the second line segment and the fins; the third line segment is connected with the feed source and overlaps with at least one of the fins. Therefore, according to the electronic device, the antenna structure and the radiator are combined, and the limited space is effectively utilized.

Description

Technical Field

[0001] The invention relates to an antenna structure and an electronic device, and in particular to an antenna structure and an electronic device arranged on a radiator. Background Art

[0002] As the functions and performance requirements of electronic devices increase, and the size of electronic devices is limited, the location and size of antennas in electronic devices are compressed. At the same time, the bandwidth required by antennas is getting wider and wider, and the space utilization of antennas in electronic devices is very important.

[0003] In view of this, how to develop an antenna structure and an electronic device that is disposed in the zero-space around the heat sink and coupled with the heat sink to increase the bandwidth has become a goal worth developing for related industries. Summary of the invention

[0004] Therefore, an object of the present invention is to provide an antenna structure and an electronic device, wherein the antenna structure is disposed in the zero-space around the existing heat sink of the electronic device, so that the antenna structure is coupled with the heat sink and the bandwidth of the antenna structure is increased.

[0005] According to one embodiment of the structural state of the present invention, an antenna structure is provided, which is arranged on a radiator. The radiator includes a plurality of fins. The antenna structure includes a feed source, a connector and an antenna unit. The feed source is arranged between two adjacent ones of these fins. The connector connects the feed source. The antenna unit includes a radiating portion, a first line segment, a second line segment and a third line segment. The radiating portion is connected to the connector. One end of the first line segment is connected to the radiating portion. One end of the second line segment is connected to the radiating portion, and the second line segment and the first line segment are arranged along a straight line. There is a spacing between the second line segment and these fins. The third line segment is connected to the feed source and overlaps with at least one of these fins.

[0006] Thereby, the antenna structure of the present invention is coupled with the fins of the heat sink, thereby increasing the bandwidth and improving the efficiency.

[0007] According to another embodiment of the structural state of the present invention, an electronic device is provided, comprising a housing, a heat sink and an antenna structure. The housing comprises a first cover and a second cover. The second cover is opposite to the first cover. The heat sink is disposed on the first cover and comprises a plurality of fins. The antenna structure comprises a feed source, a connector and an antenna unit. The feed source is disposed between two adjacent ones of these fins. The connector connects the feed source. The antenna unit comprises a radiating portion, a first line segment, a second line segment and a third line segment. The radiating portion is connected to the connector. The first line segment is disposed on the second cover, and one end of the first line segment is connected to the radiating portion. The second line segment is disposed on the second cover. One end of the second line segment is connected to the radiating portion, and the second line segment and the first line segment are disposed along a straight line. There is a spacing between the second line segment and these fins. The third line segment is connected to the feed source and overlaps with at least one of these fins.

[0008] Thus, the electronic device of the present invention arranges the antenna structure in the odd-numbered space in the electronic device, thereby increasing the volume in which the antenna structure can be arranged, increasing the antenna bandwidth, and improving the efficiency. 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 A schematic diagram of a loop loss curve of an antenna structure;

[0011] Figure 3 A schematic diagram illustrating an antenna structure according to a second embodiment of the present invention;

[0012] Figure 4 Draw according to Figure 3 A schematic diagram of a loop loss curve of an antenna structure;

[0013] Figure 5 A schematic diagram illustrating an antenna structure according to a third embodiment of the present invention;

[0014] Fig. 6A A schematic diagram of an electronic device according to a fourth embodiment of the present invention is shown;

[0015] Figure 6B Draw according to Fig. 6A A schematic cross-sectional view of the electronic device taken along section line 6B-6B; and

[0016] Figure 6C Draw according to Fig. 6A A schematic cross-sectional view of the electronic device along section line 6C-6C.

[0017] Main component symbols:

[0018] 10 Radiator

[0019] 11 Fins

[0020] 20 Shell

[0021] 21. First cover

[0022] 22 Second cover

[0023] 100, 100a, 100b, 100c Antenna structure

[0024] 110 Feed Source

[0025] 120 Connectors

[0026] 130, 130a, 130b antenna unit

[0027] 131 Overlap

[0028] 140 Ground plane

[0029] 150 Circuit Board

[0030] 200 Electronic devices

[0031] G1, G2 spacing

[0032] L0 Radiating part

[0033] L1 First line segment

[0034] L2 Second line segment

[0035] L3, L3a Third line segment

[0036] L4 Fourth line segment

[0037] L41, L42 branch line section DETAILED DESCRIPTION

[0038] The following will describe multiple embodiments of the present invention with reference to the accompanying drawings. For the purpose of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some well-known and commonly used structures and elements will be depicted in a simple schematic manner in the drawings; and repeated elements may be represented by the same number.

[0039] In addition, in this article, when a certain element (or unit or module, etc.) is "connected" to another element, it may refer to that the element is directly connected to another element, or it may refer to that a certain element is indirectly connected to another element, that is, there are other elements between the element and the other element. When it is explicitly stated that a certain element is "directly connected" to another element, it means that there are no other elements between the element and the other element. The terms first, second, third, etc. are only used to describe different elements, and there is no restriction on the elements themselves. Therefore, the first element can also be renamed as the second element. Moreover, the combination of elements / units / circuits in this article is not a generally known, conventional or well-known combination in this field. Whether the elements / units / circuits themselves are well-known cannot be used to determine whether their combination relationship is easy to be easily completed by ordinary technicians in the technical field.

[0040] See also Figure 1 , Figure 1 A schematic diagram of an antenna structure 100 according to a first embodiment of the present invention is shown. The antenna structure 100 is disposed on a heat sink 10. The heat sink 10 includes a plurality of fins 11. The antenna structure 100 includes a feed source 110, a connector 120, and an antenna unit 130. The feed source 110 is disposed between two adjacent fins 11. The connector 120 connects the feed source 110. The antenna unit 130 includes a radiation portion L0, a first line segment L1, a second line segment L2, a third line segment L3, and a lap portion 131. The radiation portion L0 is connected to the feed source 110 through the connector 120. In other words, the radiation portion L0 is connected to the connector 120. One end of the first line segment L1 is connected to the radiation portion L0. One end of the second line segment L2 is connected to the radiation portion L0, and the second line segment L2 and the first line segment L1 are disposed along a straight line. There is a spacing G1 between the second line segment L2 and the fins 11. The third line segment L3 is connected to the feed source 110 and overlaps at least one of the fins 11. The feed source 110 is disposed on the overlap portion 131 and connected to the connector 120, but the present invention is not limited thereto. In other embodiments, the feed source 110 and the connector 120 are disposed on the overlap portion 131 and the two may be connected via the overlap portion 131 or directly connected.

[0041] In detail, the connector 120 may be a thimble, and the antenna unit 130 may be a planar inverted-F antenna (PIFA). The first line segment L1 and the second line segment L2 are both straight strips, and form a T-shape with the radiation portion L0. The third line segment L3 is L-shaped, but the present invention is not limited to this. The feed source 110 and the connector 120 are both located between the two fins 11 of the radiator 10. The third line segment L3 is connected to a ground layer (not shown). The spacing G1 is greater than or equal to 3 mm. Thereby, the antenna structure 100 of the present invention is coupled with the fins 11 of the radiator 10 to increase the bandwidth and improve the efficiency at the same time.

[0042] Please refer to Figure 1 and Figure 2 , Figure 2 Draw according to Figure 1 Schematic diagram of the loop loss curve of the antenna structure 100. The loop loss curve is the loop loss value (dB) of the antenna structure 100 corresponding to each frequency (GHz). When the loop loss value is less than -6dB, it means that the antenna structure 100 performs better at the corresponding frequency. The antenna structure 100 has a first resonant frequency band and a second resonant frequency band, and the first resonant frequency band is smaller than the second resonant frequency band. The first resonant frequency band corresponds to the low frequency band (2.4GHz) of WiFi 6E, and the second resonant frequency band corresponds to the high frequency band (5GHz) of WiFi 6E. Specifically, a length of the first line segment L1 corresponds to 0.5 times the wavelength of the first resonant frequency band. A length of the second line segment L2 corresponds to 0.25 times the wavelength of the second resonant frequency band, and the radiation portion L0 is used to impedance match the first resonant frequency band and the second resonant frequency band.

[0043] See also Figure 3 , Figure 3 A schematic diagram of an antenna structure 100a of a second embodiment of the present invention is shown. The antenna structure 100a is disposed on a radiator 10. The radiator 10 includes a plurality of fins 11. The antenna structure 100a includes a feed source 110, a connector 120, and an antenna unit 130a. In the second embodiment, the radiator 10, the fins 11, the feed source 110, and the connector 120 may be respectively the same as the radiator 10, the fins 11, the feed source 110, and the connector 120 of the first embodiment, and are not repeated here. In particular, the antenna unit 130a further includes a fourth line segment L4. The fourth line segment L4 is connected to the other end of the first line segment L1, and the fourth line segment L4 overlaps with the radiator 10. In addition, the spacing G2 between the second line segment L2 and the fin 11 is greater than or equal to 1 mm. The antenna structure 100a may be a monopole antenna.

[0044] In detail, the fourth line segment L4 may include two branch line segments L41 and L42. The shape of the fourth line segment L4 may be a straight bar or may be two bent branch line segments L41 and L42. When the fourth line segment L4 is two bent branch line segments L41 and L42, the two branch line segments L41 and L42 may overlap with the fin 11, thereby reducing the overall area of ​​the antenna structure 100a. In addition, by adjusting the overlapping area between the fourth line segment L4 and the fin 11 or adjusting the length of the second line segment L2, the coupling area between the antenna structure 100a and the fin 11 of the heat sink 10 may be adjusted to adjust the high-frequency coupling amount of the antenna structure 100a.

[0045] Please refer to Figure 3 and Figure 4 , Figure 4 Draw according to Figure 3 Schematic diagram of the loop loss curve of the antenna structure 100a. The antenna structure 100a has a first resonant frequency band and a second resonant frequency band, and the first resonant frequency band is smaller than the second resonant frequency band. The sum of a length of the first line segment L1 and a length of the fourth line segment L4 corresponds to 0.25 times the wavelength of the first resonant frequency band. The first resonant frequency band is between 2.3 GHz (Hz) and 2.6 GHz, and the second resonant frequency band is between 5 GHz and 7.125 GHz.

[0046] See also Figure 5 , Figure 5 A schematic diagram of an antenna structure 100b according to a third embodiment of the present invention is shown. The antenna structure 100b is disposed on a radiator 10. The radiator 10 includes a plurality of fins 11. The antenna structure 100b includes a feed source 110, a connector 120, and an antenna unit 130b. In the third embodiment, the feed source 110 and the connector 120 of the antenna structure 100b may be the same as the feed source 110 and the connector 120 of the second embodiment, and are not described in detail. In particular, the position and length of the third line segment L3a of the antenna unit 130b may be adjusted according to the bandwidth required by the antenna structure 100b. Furthermore, by adjusting the length of the third line segment L3a and the overlapping area between the third line segment L3a and the fin 11, better bandwidth matching can be achieved. Thus, the antenna structure 100b of the present invention achieves coupling matching of low-frequency and high-frequency bands by adjusting the area of ​​coupling between the antenna structure 100b and the heat sink 10, which helps to improve the bandwidth of the low-frequency and high-frequency bands, while improving the efficiency of the antenna structure 100b in the low-frequency band and the high-frequency band, and can also reduce the size of the antenna structure 100b.

[0047] See also Fig. 6A , Figure 6B as well as Figure 6C , Fig. 6A A schematic diagram of an electronic device 200 according to a fourth embodiment of the present invention is shown; Figure 6B Draw according to Fig. 6A A schematic cross-sectional view of the electronic device 200 taken along section line 6B-6B; and Figure 6C Draw according to Fig. 6AThe electronic device 200 is a cross-sectional schematic diagram viewed along the section line 6C-6C. The electronic device 200 includes a housing 20, a heat sink 10 and an antenna structure 100c. The housing 20 includes a first cover 21 and a second cover 22. The second cover 22 is opposite to the first cover 21. The heat sink 10 is disposed on the first cover 21 and includes a plurality of fins 11. The antenna structure 100c includes a feeding source 110, a connecting member 120 and an antenna unit 130. The feeding source 110 is disposed between two adjacent fins 11. The connecting member 120 connects the feeding source 110. The antenna unit 130 includes a radiating portion L0, a first line segment L1, a second line segment L2, a third line segment L3 and a lap portion (not shown). The first line segment L1 is disposed on the second cover 22, and one end of the first line segment L1 is connected to the radiating portion L0. The second line segment L2 is disposed on the second cover 22. One end of the second line segment L2 is connected to the radiation portion L0, and the second line segment L2 and the first line segment L1 are disposed along a straight line. There is a spacing (not shown) between the second line segment L2 and these fins 11. The third line segment L3 is connected to the feed source 110 and overlaps with at least one of these fins 11. The feed source 110 is disposed in the overlapping portion and connected to the connector 120, but the present invention is not limited thereto. In other embodiments, the feed source 110 and the connector 120 may be disposed in the overlapping portion, and the two may be connected through the overlapping portion or directly connected.

[0048] In the fourth embodiment, the antenna structure 100c may be the same as the antenna structure 100 of the first embodiment, and will not be described in detail. The electronic device 200 may be a notebook computer, the first cover 21 may be the C cover of the notebook computer, and the second cover 22 may be the D cover of the notebook computer, but the present invention is not limited thereto. In detail, the antenna structure 100c may further include a ground layer 140 and a circuit board 150. The circuit board 150 is disposed on the heat sink 10. The ground layer 140, the third line segment L3, and the feed source 110 are disposed on the circuit board 150. The connector 120 is disposed upright from the first cover 21 to the second cover 22 on the third line segment L3, and is connected to the first line segment L1 and the second line segment L2 disposed on the second cover 22. Thus, the electronic device 200 of the present invention disposes the antenna structure 100 c in the odd-zero space in the electronic device 200 , thereby increasing the disposition volume of the antenna structure 100 c , increasing the antenna bandwidth, and improving the efficiency.

[0049] It can be seen from the above embodiments that the present invention has the following advantages. First, the antenna structure of the present invention is coupled with the fins of the heat sink, which can increase the bandwidth and improve the efficiency at the same time. Second, the antenna structure of the present invention achieves coupling matching of low-frequency and high-frequency bands by adjusting the area of ​​coupling between the antenna structure and the heat sink, which helps to improve the bandwidth of the low-frequency and high-frequency bands, while improving the efficiency of the antenna structure in the low-frequency band and the high-frequency band, and can also reduce the size of the antenna structure. Third, the electronic device of the present invention sets the antenna structure in the zero-space in the electronic device, increases the volume that the antenna structure can be set, increases the antenna bandwidth, and improves the efficiency at the same time.

[0050] Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Any person skilled in the art 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 present invention should be determined by the scope of the attached claims.

Claims

1. An antenna structure, the antenna structure is arranged on a radiator, the radiator includes a plurality of fins, wherein the antenna structure includes: A feeding source, the feeding source is disposed between two adjacent ones of the fins; a connecting member connected to the feeding source; as well as An antenna unit, the antenna unit comprising: a radiation portion connected to the connecting member; a first line segment, one end of which is connected to the radiation portion; a second line segment, one end of which is connected to the radiation portion, and the second line segment and the first line segment are arranged along a straight line, wherein there is a distance between the second line segment and the fins; and A third line segment is connected to the feeding source and overlaps with at least one of the fins. 2 . The antenna structure as claimed in claim 1 , wherein the antenna structure has a first resonance frequency band and a second resonance frequency band, the first resonance frequency band is smaller than the second resonance frequency band, and a length of the first line segment corresponds to 0.5 times the wavelength of the first resonance frequency band. 3 . The antenna structure as claimed in claim 2 , wherein a length of the second line segment corresponds to 0.25 times the wavelength of the second resonance frequency band. The antenna structure as claimed in claim 2 , wherein the spacing is greater than or equal to 3 mm. The antenna structure as claimed in claim 2 , wherein the third line segment is connected to a ground layer.

6. The antenna structure as claimed in claim 1, wherein the antenna unit further comprises: A fourth line segment is connected to the other end of the first line segment, and the fourth line segment overlaps the heat sink.

7. The antenna structure as claimed in claim 6, wherein the antenna structure has a first resonant frequency band and a second resonant frequency band, the first resonant frequency band is smaller than the second resonant frequency band, and the sum of a length of the first line segment and a length of the fourth line segment corresponds to 0.25 times the wavelength of the first resonant frequency band. The antenna structure as claimed in claim 6 , wherein the spacing is greater than or equal to 1 mm. 9 . The antenna structure as claimed in claim 7 , wherein the first resonance frequency band is between 2.3 GHz and 2.6 GHz, and the second resonance frequency band is between 5 GHz and 7.125 GHz.

10. The antenna structure as claimed in claim 1, wherein the connecting member is a thimble.

11. An electronic device, comprising: A housing, comprising: a first cover; and a second cover body, the second cover body being opposite to the first cover body; a heat sink, which is disposed on the first cover and includes a plurality of fins; and An antenna structure, the antenna structure comprising: A feeding source, the feeding source is disposed between two adjacent ones of the fins; a connecting piece connected to the feeding source; and An antenna unit, the antenna unit comprising: a radiation portion connected to the connecting member; a first line segment, the first line segment being disposed on the second cover, and one end of the first line segment being connected to the radiation portion; a second line segment, the second line segment being disposed on the second cover, one end of the second line segment being connected to the radiation portion, and the second line segment and the first line segment being disposed along a straight line, wherein there is a spacing between the second line segment and the fins; and A third line segment is connected to the feeding source and overlaps with at least one of the fins. 12 . The electronic device as claimed in claim 11 , wherein the antenna structure has a first resonance frequency band and a second resonance frequency band, the first resonance frequency band is smaller than the second resonance frequency band, and a length of the first line segment corresponds to 0.5 times the wavelength of the first resonance frequency band. 13 . The electronic device as claimed in claim 12 , wherein a length of the second line segment corresponds to 0.25 times the wavelength of the second resonance frequency band. The electronic device as claimed in claim 12 , wherein the distance is greater than or equal to 3 mm. 15 . The electronic device as claimed in claim 12 , wherein the third line segment is connected to a ground layer, and the ground layer is disposed on the heat sink.

16. The electronic device as claimed in claim 11, wherein the antenna unit further comprises: A fourth line segment is connected to the other end of the first line segment, and the fourth line segment overlaps the heat sink.

17. The electronic device as claimed in claim 16, wherein the antenna structure has a first resonant frequency band and a second resonant frequency band, the first resonant frequency band is smaller than the second resonant frequency band, and the sum of a length of the first line segment and a length of the fourth line segment corresponds to 0.25 times the wavelength of the first resonant frequency band. The electronic device as claimed in claim 16 , wherein the distance is greater than or equal to 1 mm. 19 . The electronic device as claimed in claim 17 , wherein the first resonance frequency band is between 2.3 GHz and 2.6 GHz, and the second resonance frequency band is between 5 GHz and 7.125 GHz.

20. The electronic device as claimed in claim 11, wherein the connecting member is a thimble.

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