Antenna structure and electronic device

Abstract

The invention discloses an antenna structure and an electronic device. The antenna structure comprises a feed-in source, a main radiation part, a metal part and a grounding part, the main radiation part is in signal connection with the feed-in source; a first distance is formed between the metal part and the main radiation part; a second distance is formed between the grounding part and the metal part, and a third distance is formed between the grounding part and the main radiation part; wherein the main radiation part is coupled with the metal part through a first interval, and the grounding part is coupled with the metal part through a second interval. Therefore, according to the antenna structure, secondary coupling is carried out through the main radiation part, the grounding part and the metal part, and the low-frequency band of the antenna structure is widened.

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 around a speaker. 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 to be covered 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 can effectively utilize the remaining space in the electronic device and extend the bandwidth has become a goal worth researching and developing for related industries.

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

[0005] Therefore, an object of the present invention is to provide an antenna structure and an electronic device, wherein the antenna is disposed around an existing metal component of the electronic device, and the bandwidth of the antenna structure is extended by coupling with the metal component.

[0006] According to an embodiment of the structural aspect of the present invention, an antenna structure is provided, comprising a feed source, a main radiating portion, a metal portion and a ground portion. The main radiating portion is signal-connected to the feed source. There is a first spacing between the metal portion and the main radiating portion. There is a second spacing between the ground portion and the metal portion, and there is a third spacing between the ground portion and the main radiating portion. The main radiating portion is coupled to the metal portion via the first spacing, and the ground portion is coupled to the metal portion via the second spacing.

[0007] Thereby, the antenna structure of the present invention performs secondary coupling through the main radiation part, the ground part and the metal part, so as to broaden the low frequency band of the antenna structure.

[0008] According to another embodiment of the structural state of the present invention, an electronic device is provided, comprising a metal part and an antenna unit. The antenna unit comprises a feed source, a main radiating part and a grounding part. The main radiating part is signal-connected to the feed source and has a first spacing with the metal part. There is a second spacing between the grounding part and the metal part, and the grounding part is connected to a grounding layer. The main radiating part is coupled to the metal part through the first spacing, and the grounding part is coupled to the metal part through the second spacing.

[0009] Thus, the electronic device of the present invention arranges the antenna unit around the metal part, effectively utilizing the space in the electronic device and broadening the bandwidth of the antenna unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1A schematic diagram illustrating an antenna structure according to a first embodiment of the present invention;

[0011] Figure 2 A schematic diagram illustrating an antenna structure according to a second embodiment of the present invention;

[0012] Figure 3 A schematic diagram of an electronic device according to a third embodiment of the present invention is shown;

[0013] Figure 4 A schematic diagram of an electronic device according to a fourth embodiment of the present invention is shown;

[0014] Figure 5 A schematic diagram of an electronic device according to a fifth embodiment of the present invention is shown;

[0015] Figure 6 Draw according to Figure 5 Another schematic diagram of an electronic device; and

[0016] Figure 7 Draw according to Figure 5 Side view of an electronic device.

[0017] Main component symbols:

[0018] 100, 100a antenna structure

[0019] 110 Feed Source

[0020] 120 Main radiator

[0021] 121 First line segment

[0022] 122 Second line segment

[0023] 130, M1 Metal Department

[0024] 140 Grounding

[0025] 141 The third line segment

[0026] 142 The fourth line segment

[0027] 143 Ground layer

[0028] 150 High frequency radiation unit

[0029] 160 branch radiation part

[0030] 170 Floating joint

[0031] 191 Filter Components

[0032] 192 Inductor components

[0033] 200, 200a, 200b Electronic device

[0034] 202 antenna units

[0035] 210 Speakers

[0036] 220 Bracket

[0037] 230 Gasket

[0038] CR coupling path

[0039] G1 First spacing

[0040] G2 Second spacing

[0041] G3 Third spacing

[0042] L1 Audio Cable

[0043] P1 Sensing Unit

[0044] S1 first side

[0045] S2 Side 2 DETAILED DESCRIPTION

[0046] 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.

[0047] 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.

[0048] See also Figure 1 , Figure 1The schematic diagram of the antenna structure 100 according to the first embodiment of the present invention is shown. The antenna structure 100 comprises a feed source 110, a main radiating portion 120, a metal portion 130 and a ground portion 140. The main radiating portion 120 is signal-connected to the feed source 110. There is a first distance G1 between the metal portion 130 and the main radiating portion 120. There is a second distance G2 between the ground portion 140 and the metal portion 130, and there is a third distance G3 between the ground portion 140 and the main radiating portion 120. The main radiating portion 120 is coupled to the metal portion 130 via the first distance G1, and the ground portion 140 is coupled to the metal portion 130 via the second distance G2.

[0049] In detail, the main radiation portion 120 may include a first line segment 121 and a second line segment 122. The first line segment 121 is connected to the feed source 110. The second line segment 122 is perpendicularly connected to the first line segment 121 and extends toward the metal portion 130. A first distance G1 is provided between the second line segment 122 and the metal portion 130. The grounding portion 140 includes a third line segment 141, a fourth line segment 142 and a grounding layer 143. The third line segment 141 is parallel to the second line segment 122, wherein a third distance G3 is provided between the second line segment 122 and the third line segment 141. The fourth line segment 142 is perpendicularly connected to the third line segment 141 and overlaps with the metal portion 130. The fourth line segment 142 is connected to the grounding layer 143. In other words, the main radiation portion 120 may be in an inverted L shape; the grounding portion 140 may be in a T shape, but the present invention is not limited thereto. The first spacing G1 may be greater than or equal to 2 mm and less than or equal to 6 mm, and the second spacing G2 may be greater than or equal to 0.5 mm and less than or equal to 3 mm, but the present invention is not limited thereto. Figure 1 In FIG. 1 , a portion of the fourth line segment 142 overlaps with the metal portion 130 , and thus a portion of the fourth line segment 142 is indicated by a dotted line.

[0050] When a signal is fed from the feed source 110, its path can be as follows: Figure 1 As shown in the coupling path CR in FIG. 1 , the antenna structure 100 of the present invention is connected to the ground layer 143 via the feed source 110, the first line segment 121, the second line segment 122, the first spacing G1, the metal portion 130, the second spacing G2, the third line segment 141 and the fourth line segment 142. In the first embodiment, a resonance frequency band of the main radiating portion 120 is between 2.4 GHz and 2.69 GHz. Thus, the antenna structure 100 of the present invention is coupled twice through the main radiating portion 120, the grounding portion 140 and the metal portion 130, so as to broaden the low frequency band of the antenna structure 100 and extend the low frequency band to 1.4 GHz.

[0051] See also Figure 1 and Figure 2 , Figure 2A schematic diagram of an antenna structure 100a according to a second embodiment of the present invention is shown. The antenna structure 100a includes a feed source 110, a main radiating portion 120, a metal portion 130, and a ground portion 140. In the second embodiment, the feed source 110, the main radiating portion 120, the metal portion 130, and the ground portion 140 are respectively the same as the feed source 110, the main radiating portion 120, the metal portion 130, and the ground portion 140 in the first embodiment, and are not described in detail. In particular, the antenna structure 100a may further include a high-frequency radiating portion 150, a branch radiating portion 160, and a floating portion 170.

[0052] Specifically, one end of the high-frequency radiation portion 150 is connected to the first line segment 121, and the other end thereof extends in the direction of the second line segment 122, and has a resonant frequency. The resonant frequency of the high-frequency radiation portion 150 is between 4 GHz and 5 GHz. The branch radiation portion 160 is away from the metal portion 130 and parallel to the first line segment 121, and has a resonant frequency. The feed source 110 and the first line segment 121 are located between the branch radiation portion 160 and the metal portion 130. The resonant frequency of the branch radiation portion 160 is 3 GHz. The floating portion 170 is connected to the metal portion 130 and is disposed between the main radiation portion 120 and the metal portion 130, and is disposed between the third line segment 141 of the ground portion 140 and the metal portion 130.

[0053] See also Figure 1 , Figure 2 as well as Figure 3 , Figure 3A schematic diagram of an electronic device 200 according to a third embodiment of the present invention is shown. The electronic device 200 includes a metal portion M1 and an antenna unit 202. The antenna unit 202 includes a feed source 110, a main radiating portion 120, a grounding portion 140, a high frequency radiating portion 150, a branch radiating portion 160, and a floating portion 170. The main radiating portion 120 is signal-connected to the feed source 110, and has a first spacing G1 between it and the metal portion M1. The grounding portion 140 has a second spacing G2 between it and the metal portion M1, and the grounding portion 140 is connected to a grounding layer 143. The main radiating portion 120 is coupled to the metal portion M1 via the first spacing G1, and the grounding portion 140 is coupled to the metal portion M1 via the second spacing G2. In the third embodiment, the feeding source 110, the main radiating portion 120, the grounding portion 140, the high-frequency radiating portion 150, the branch radiating portion 160 and the floating portion 170 may be respectively the same as the feeding source 110, the main radiating portion 120, the grounding portion 140, the high-frequency radiating portion 150, the branch radiating portion 160 and the floating portion 170 of the second embodiment, and no further description is given. In particular, the metal portion M1 may be a part of one of a speaker component, a metal frame, a magnet and an input / output port in the electronic device 200 or other metal structure. In other words, the metal portion M1 may be disposed in one of the speaker component, the metal frame, the magnet and the input / output port in the electronic device 200, but the present invention is not limited thereto. In addition, the electronic device 200 further includes an audio source line L1, which is connected to the metal portion M1 and is used to transmit an audio source signal.

[0054] In detail, the electronic device 200 may be a notebook computer, a personal digital assistant or other electronic devices, but the present invention is not limited thereto. In the third embodiment, the metal portion M1 may be disposed in the speaker assembly, and may also be a part of the speaker assembly in the electronic device 200. In addition, the floating portion 170 may be made of metal, and may be used to block the sound source signal of the sound source line L1 from interfering with the antenna unit 202. Thus, the electronic device 200 of the present invention disposes the antenna unit 202 around the metal portion M1, effectively utilizing the space in the electronic device 200, while broadening the bandwidth of the antenna unit 202.

[0055] See also Figure 3 and Figure 4 , Figure 4A schematic diagram of an electronic device 200a according to a fourth embodiment of the present invention is shown. The electronic device 200a includes a metal portion M1, an antenna unit 202, and an audio source line L1. The antenna unit 202 includes a feed source 110, a main radiating portion 120, and a grounding portion 140. In the fourth embodiment, the metal portion M1, the antenna unit 202, and the audio source line L1 of the electronic device 200a may have the same structure as the metal portion M1, the antenna unit 202, and the audio source line L1 of the third embodiment, and will not be described in detail. In particular, the electronic device 200a may further include a sensing unit P1, a filtering element 191, and an inductor element 192. The sensing unit P1 may be a proximity sensor in the electronic device 200a. When the sensing unit P1 is disposed close to the antenna unit 202, the sensing unit P1 may interfere with the antenna unit 202. Therefore, the electronic device 200a adds a filter element 191 to the fourth line segment 142 of the antenna unit 202, and connects the sensing unit P1 and the fourth line segment 142 through the inductor element 192. Thus, the electronic device 200a of the present invention can prevent the noise generated by the sensing unit P1 from interfering with the antenna unit 202 through the filter circuit formed by the filter element 191 and the inductor element 192.

[0056] See also Figure 3 , Figures 5 to 7 . Figure 5 A schematic diagram of an electronic device 200b according to a fifth embodiment of the present invention is shown; Figure 6 Draw according to Figure 5 Another schematic diagram of the electronic device 200b; and Figure 7 Draw according to Figure 5 The electronic device 200b is a side view of the electronic device 200b. The electronic device 200b includes a metal part M1 and an antenna unit 202. The antenna unit 202 includes a feed source 110, a main radiating part 120, a grounding part 140, a high-frequency radiating part 150, a branch radiating part 160 and a floating part 170. In the fifth embodiment, the antenna unit 202 in the electronic device 200b can have the same structure as the antenna unit 202 of the electronic device 200 of the third embodiment or the antenna unit 202 of the electronic device 200a of the fourth embodiment, and will not be repeated. In particular, the metal part M1 is disposed on the speaker assembly. The speaker assembly includes a bracket 220 and a speaker 210. The bracket 220 is fixed by a gasket 230. The speaker 210 is supported and erected by the bracket 220, and includes a first surface S1 and a second surface S2, wherein the metal part M1 is disposed on the second surface S2, and the main radiating part 120 is close to the first surface S1 of the speaker 210.

[0057] It can be seen from the above embodiments that the present invention has the following advantages. First, the antenna structure of the present invention performs secondary coupling through the main radiating part, the grounding part and the metal part, thereby widening the low-frequency band of the antenna structure and extending the low-frequency band to 1.4 GHz; second, thereby, the electronic device of the present invention sets the antenna unit around the metal part, effectively utilizing the space in the electronic device and widening the bandwidth of the antenna unit; third, the electronic device of the present invention can prevent the noise generated by the sensing unit from interfering with the antenna unit through the filtering circuit formed by the filtering element and the inductor element.

[0058] Although the present invention has been disclosed in the above embodiments, 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 present invention should be determined by the scope of the attached claims.

Claims

1. An antenna structure, comprising: a feed source; A main radiating portion, the main radiating portion signal is connected to the feeding source; a metal portion, wherein a first distance exists between the metal portion and the main radiation portion; as well as a grounding portion, wherein a second distance exists between the grounding portion and the metal portion, and a third distance exists between the grounding portion and the main radiating portion; The main radiation part is coupled to the metal part via the first distance, and the grounding part is coupled to the metal part via the second distance.

2. The antenna structure as claimed in claim 1, wherein the main radiating portion comprises: a first line segment, the first line segment connected to the feeding source; as well as a second line segment, the second line segment vertically connected to the first line segment and extending toward the metal portion; There is a first distance between the second line segment and the metal portion.

3. The antenna structure as claimed in claim 2, wherein the ground portion comprises: a third line segment, the third line segment being parallel to the second line segment, wherein there is a third distance between the second line segment and the third line segment; as well as a fourth line segment, the fourth line segment vertically connected to the third line segment and overlapping the metal portion; There is a second distance between the third line segment and the metal portion.

4. The antenna structure according to claim 2, further comprising: a high-frequency radiation portion, the high-frequency radiation portion is connected to the first line segment, extends toward the second line segment, and has a resonance frequency; Wherein, the resonance frequency of the high-frequency radiation part is between 4 GHz and 5 GHz.

5. The antenna structure according to claim 2, further comprising: a branch radiation portion, the branch radiation portion is away from the metal portion and parallel to the first line segment, and has a resonance frequency; Wherein, the resonance frequency of the branch radiation part is 3 GHz.

6. The antenna structure according to claim 1, further comprising: A floating portion is connected to the metal portion and is disposed between the main radiation portion and the metal portion, and between the ground portion and the metal portion. 7 . The antenna structure as claimed in claim 1 , wherein the first spacing is greater than or equal to 2 mm and less than or equal to 6 mm, and the second spacing is greater than or equal to 0.5 mm and less than or equal to 3 mm.

8. An electronic device, comprising:

1. Metal Department; as well as An antenna unit, the antenna unit comprising: a feed source; a main radiating portion, the main radiating portion is signal-connected to the feeding source and has a first distance between the main radiating portion and the metal portion; and A grounding portion, a second distance is provided between the grounding portion and the metal portion, and the grounding portion is connected to a grounding layer; wherein the main radiating portion is coupled to the metal portion through the first distance, and the grounding portion is coupled to the metal portion through the second distance. 9 . The electronic device as claimed in claim 8 , wherein the metal portion is disposed on one of a speaker assembly, a metal frame, a magnet, and an input / output port.

10. The electronic device as claimed in claim 9, wherein the metal portion is disposed on the speaker assembly, and the speaker assembly comprises: A bracket; as well as A speaker is supported by the bracket and comprises a first surface and a second surface, wherein the metal part is arranged on the second surface.

11. The electronic device as claimed in claim 10, wherein the main radiation portion is disposed on the bracket and comprises: a first line segment, the first line segment connected to the feeding source; as well as a second line segment, the second line segment vertically connected to the first line segment and extending toward the metal portion; There is a first distance between the second line segment and the metal portion, and the main radiation portion is close to the first surface of the speaker.

12. The electronic device as claimed in claim 11, wherein the grounding portion comprises: a third line segment, the third line segment being parallel to the second line segment; as well as a fourth line segment, the fourth line segment vertically connected to the third line segment; There is a second distance between the third line segment and the metal portion, and there is a third distance between the second line segment and the third line segment.

13. The electronic device as claimed in claim 11, wherein the antenna unit further comprises: a high-frequency radiation portion, the high-frequency radiation portion is connected to the first line segment, extends toward the second line segment, and has a resonance frequency; Wherein, the resonance frequency of the high-frequency radiation part is between 4 GHz and 5 GHz.

14. The electronic device as claimed in claim 11, wherein the antenna unit further comprises: a branch radiation portion, the branch radiation portion is away from the metal portion and parallel to the first line segment, and has a resonance frequency; Wherein, the resonance frequency of the branch radiation part is 3 GHz.

15. The electronic device as claimed in claim 10, wherein the antenna unit further comprises: a floating portion connected to the metal portion and disposed between the main radiation portion and the metal portion, and disposed between the ground portion and the metal portion; The floating portion is used to isolate a signal source of the speaker assembly. 16 . The electronic device as claimed in claim 8 , wherein the first spacing is greater than or equal to 2 mm and less than or equal to 6 mm, and the second spacing is greater than or equal to 0.5 mm and less than or equal to 3 mm.

17. The electronic device as claimed in claim 12, wherein the antenna unit further comprises: a sensing unit connected to the fourth line segment; as well as A filter element is connected between the fourth line segment and the ground layer and is used to isolate a signal of the sensing unit.

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