Electronic devices and antenna structures

Abstract

An electronic device and antenna structure are disclosed. The electronic device includes a substrate, a first radiating portion, a second radiating portion, a ground portion, a short-circuit portion, a third radiating portion, a first ground extension portion, a feed element, and a first capacitor element. The second radiating portion is connected to the first radiating portion. The short-circuit portion is connected between the second radiating portion and the ground portion, and is closer to the ground portion than the first radiating portion. The first ground extension portion is connected between the third radiating portion and the ground portion. The first capacitor element is coupled between a first segment and a second segment of the short-circuit portion. The short-circuit portion, the first ground extension portion, and the third radiating portion are mutually coupled to generate a first operating frequency band, and the first radiating portion, the short-circuit portion, the first ground extension portion, and the third radiating portion are mutually coupled and matched through the first capacitor element to generate a second operating frequency band, the second operating frequency band being higher than the first operating frequency band. The electronic device and antenna structure provided by this invention can support the entire LTE frequency band, including low frequencies.

Description

Technical Field

[0001] This invention relates to an electronic device, and more particularly to an electronic device having an antenna structure that supports the entire LTE frequency band. Background Technology

[0002] Current electronic devices, such as laptops and tablets, are not only trending towards thinner and lighter designs, but also need to provide good communication transmission quality. However, in order to meet the trend of narrow bezel designs in various wireless products such as laptops and tablets, the design of antenna structures within electronic devices has become significantly more difficult.

[0003] Therefore, how to meet the demand for miniaturization and thinness of electronic devices through improvements in antenna structure design, while also ensuring the communication quality of the electronic devices, has become one of the important issues to be addressed in this field.

[0004] In summary, an electronic device and antenna structure are needed to solve the above problems. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a miniaturized antenna structure that supports the entire LTE frequency band, including Band 71, thus solving the problem of significant bandwidth reduction in existing antenna structures when used for narrow bezel requirements.

[0006] To solve the aforementioned technical problems, one technical solution adopted by the present invention is to provide an electronic device, which includes a substrate, a first radiating portion, a second radiating portion, a ground portion, a short-circuit portion, a third radiating portion, a first ground extension portion, a feed member, and a first capacitor element. The first radiating portion, the second radiating portion, the ground portion, the short-circuit portion, the third radiating portion, the first ground extension portion, the feed member, and the first capacitor element are all disposed on the substrate. The second radiating portion is connected to the first radiating portion. The short-circuit portion is connected between the second radiating portion and the ground portion, and is closer to the ground portion than the first radiating portion. The short-circuit portion includes a first segment, a second segment, and a third segment. The first segment is connected to the second radiating portion, and the third segment is connected between the second segment and the ground portion. The first ground extension portion is connected between the third radiating portion and the ground portion. The feed member is coupled between the second radiating portion and the ground portion for feeding in a signal. The first capacitor element is coupled between the first segment and the second segment. The short-circuit section, the first ground extension section, and the third radiating section are coupled to each other to generate a first operating frequency band, while the first radiating section, the short-circuit section, the first ground extension section, and the third radiating section are coupled to each other and matched by the first capacitor element to generate a second operating frequency band, which is higher than the first operating frequency band.

[0007] To address the aforementioned technical problems, another technical solution adopted by the present invention is to provide an antenna structure, comprising a substrate, a first radiating portion, a second radiating portion, a ground portion, a short-circuit portion, a third radiating portion, a first ground extension portion, and a first capacitor element. The first radiating portion, the second radiating portion, the ground portion, the short-circuit portion, the third radiating portion, the first ground extension portion, and the first capacitor element are all disposed on the substrate. The second radiating portion is connected to the first radiating portion. The second radiating portion is used to couple to a feed element and feed a signal through the feed element. The short-circuit portion is connected between the second radiating portion and the ground portion, and is closer to the ground portion than the first radiating portion. The short-circuit portion includes a first segment, a second segment, and a third segment. The first segment is connected to the second radiating portion, and the third segment is connected between the second segment and the ground portion. The first ground extension portion is connected between the third radiating portion and the ground portion. The first capacitor element is coupled between the first segment and the second segment. The short-circuit section, the first ground extension section, and the third radiating section are coupled to each other to generate a first operating frequency band, while the first radiating section, the short-circuit section, the first ground extension section, and the third radiating section are coupled to each other and matched by the first capacitor element to generate a second operating frequency band, which is higher than the first operating frequency band.

[0008] The beneficial effect of the present invention is that the electronic device and antenna structure provided by the present invention can generate a first operating frequency band through mutual coupling between the short-circuit part, the first ground extension part and the third radiating part, and generate a second operating frequency band through mutual coupling between the first radiating part, the short-circuit part, the first ground extension part and the third radiating part and through matching of the first capacitor element, thereby supporting the entire LTE frequency band including low frequency.

[0009] To further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are for reference and illustration only and are not intended to limit the present invention. Attached Figure Description

[0010] Figure 1 This is a three-dimensional schematic diagram of the electronic device of the present invention.

[0011] Figure 2 This is a schematic diagram of the antenna structure according to the first embodiment of the present invention.

[0012] Figure 3 This is a schematic diagram of another embodiment of the antenna structure of the first embodiment of the present invention.

[0013] Figure 4 This is a schematic diagram of the antenna structure according to the second embodiment of the present invention.

[0014] Figure 5 This is a graph showing the voltage standing wave ratio (VSWR) of the antenna structure of the present invention at different frequencies.

[0015] Explanation of key component symbols:

[0016] D Electronic Device

[0017] A antenna structure

[0018] S substrate

[0019] 1. First Radiation Section

[0020] 11. Protruding part

[0021] 2 Second Radiation Section

[0022] 3. Third Radiation Section

[0023] 30 Opening

[0024] 4. Grounding part

[0025] 5. Short circuit section

[0026] 51 First Section

[0027] 52 Second Section

[0028] 53 Third Section

[0029] 6 First grounding extension

[0030] 7 Second grounding extension

[0031] 8. Extension

[0032] F feeder

[0033] F1 feed terminal

[0034] F2 Grounding terminal

[0035] L Inductor

[0036] C1 First capacitor element

[0037] C2 Second capacitor element

[0038] G1 First Coupling Gap

[0039] G2 Second Coupling Gap

[0040] G3 Third Coupling Gap

[0041] X, Y, Z coordinate axes Detailed Implementation

[0042] The following specific embodiments illustrate the implementation of the "electronic device and antenna structure" disclosed in this invention. Those skilled in the art can understand the advantages and effects of this invention from the content disclosed in this specification. This invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this invention. Furthermore, the accompanying drawings of this invention are for simple illustrative purposes only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this invention in detail, but the disclosed content is not intended to limit the scope of protection of this invention. In addition, it should be understood that although terms such as "first," "second," and "third" may be used herein to describe various elements, these elements should not be limited by these terms. These terms are mainly used to distinguish one element from another. Furthermore, the term "or" as used herein may, depending on the actual situation, include any combination of one or more of the associated listed items. Furthermore, in the entire text of this invention, "connect" means that there is a physical connection between two elements, and that the connection is direct or indirect. In the entire text of this invention, "couple" means that there are two elements that are separate from each other and have no physical connection, but rather that the electric field energy generated by the current of one element excites the electric field energy of the other element.

[0043] [Example]

[0044] See Figure 1 As shown, the present invention provides an electronic device D, which may have an antenna structure A. The electronic device D can transmit and receive radio frequency (RF) signals through the antenna structure A. For example, the electronic device D may be a tablet computer or a laptop computer; however, the present invention is not limited thereto. It should be noted that... Figure 1 The position of antenna structure A in electronic device D shown is for illustrative purposes only and is not intended to limit the specific location of antenna structure A.

[0045] See Figure 2 As shown, Figure 2This is a schematic diagram of the antenna structure according to the first embodiment of the present invention. The antenna structure A includes a substrate S and a first radiating portion 1, a second radiating portion 2, a third radiating portion 3, a grounding portion 4, a short-circuit portion 5, a first grounding extension portion 6, and a first capacitor element C1 disposed on the substrate S. The first radiating portion 1, the second radiating portion 2, the grounding portion 4, the short-circuit portion 5, the first grounding extension portion 6, and the first capacitor element C1 are disposed on the substrate S, while the third radiating portion 3 is disposed at the edge of the substrate S. The first radiating portion 1, the second radiating portion 2, the third radiating portion 3, the grounding portion 4, the short-circuit portion 5, and the first grounding extension portion 6 are conductive materials. For example, the first radiating portion 1, the second radiating portion 2, the grounding portion 4, the short-circuit portion 5, and the first grounding extension portion 6 can be copper foil, the third radiating portion 3 can be copper foil or a metal component, and the substrate S can be made of epoxy resin fiberglass substrate (FR-4), but the present invention is not limited thereto. The second radiating part 2 is connected to the first radiating part 1. Specifically, taking the connection between the first radiating part 1 and the second radiating part 2 as a reference, the first radiating part 1 extends in the positive X-axis direction relative to the connection, while the second radiating part 2 extends in the negative X-axis direction relative to the connection.

[0046] As described above, the short-circuit portion 5 is connected between the second radiating portion 2 and the grounding portion 4, and the short-circuit portion 5 is closer to the grounding portion 4 than the first radiating portion 1. The first grounding extension portion 6 is connected between the third radiating portion 3 and the grounding portion 4 along the Y-axis direction. Further, the short-circuit portion 5 includes a first section 51, a second section 52, and a third section 53. The first section 51 is connected to the second radiating portion 2, and the third section 53 is connected between the second section 52 and the grounding portion 4. A first capacitor element C1 is coupled between the first section 51 and the second section 52, and the capacitance value of the capacitor element C1 can be between 0.8 and 2.0 pF, preferably 1.2 pF.

[0047] Continue reading Figure 2 And you can refer to it first. Figure 5 As shown, Figure 5This is a graph showing the voltage standing wave ratio (VSWR) of the antenna structure of the present invention at different frequencies. In addition to the antenna structure A, the electronic device D also has a feed element F, which is disposed on the substrate S and coupled between the second radiating section 2 and the grounding section 4. The feed element F can be a coaxial cable, but the present invention is not limited thereto. Specifically, the feed element F may have a feed end F1 and a ground end F2. The feed end F1 may be electrically connected to the second radiating section 2, and the ground end F2 may be electrically connected to the grounding section 4. The second radiating section 2 can be fed a signal through the feed element F, causing the short-circuit section 5, the first ground extension section 6, and the third radiating section 3 to couple with each other to generate a first operating frequency band R1. The first radiating section 1, the short-circuit section 5, the first ground extension section 6, and the third radiating section 3 are coupled with each other and matched through the first capacitor element C1 to generate a second operating frequency band R2. Figure 5 As shown, the second operating frequency band R2 is higher than the first operating frequency band R1. The frequency range of the first operating frequency band R1 is between 617MHz and 698MHz, and the frequency range of the second operating frequency band R2 is between 1450MHz and 2200MHz. Furthermore, the third radiating section 3 has an opening 30 adjacent to the first radiating section 1. The opening 30 improves the impedance matching of the first operating frequency band R1. The length (parallel to the X-axis) of the opening 30 is less than 45mm, preferably 27mm. The width (parallel to the Z-axis) of the opening 30 is greater than 0.3mm, preferably 1mm.

[0048] It is worth mentioning that antenna structure A can also be additionally provided with an extension 8 to connect to the third radiating part 3, thereby extending the coupling path of the first operating frequency band R1. Figure 2 As shown, the extension 8 is disposed on the same surface of the substrate S as the other components of the antenna structure A. However, the first radiating part 1, the second radiating part 2, the short-circuit part 5, the first ground extension 6, and the first capacitor element C1 are closer to one side of the substrate S, while the extension 8 is closer to the opposite side of the substrate S. The provision of the extension 8 is equivalent to extending the third radiating part 3 (that is, the extension 8 can be regarded as an extension of the third radiating part 3), which helps to adjust the frequency offset and bandwidth of the first operating frequency band R1.

[0049] Next, refer to Figure 3 As shown, Figure 3 This is a schematic diagram of another embodiment of the antenna structure of the first embodiment of the present invention. Figure 3 Antenna structure A in Figure 2 The antenna structure A is similar to that in the previous one, with the only difference being the material composition of the third radiating part 3. Figure 2 The third radiating part 3 can be a hard iron metal component that can be connected to the edge of the substrate S in a direction perpendicular to the substrate S. Figure 2 Let's take a look. Figure 2 Antenna structure A is a three-dimensional structure, with the third radiating part 3 arranged along the Z-axis, and the substrate S parallel to the XY plane. In comparison, Figure 3 The third radiating part 3 can be a copper foil, formed on the substrate S like the first radiating part 1 and the second radiating part 2, therefore... Figure 3 Let's take a look. Figure 3 The antenna structure A is a planar structure, and the third radiating part 3 is also parallel to the XY plane.

[0050] See Figure 4 and Figure 5 As shown, Figure 4 This is a schematic diagram of the antenna structure according to the second embodiment of the present invention. Figure 4 The antenna structure A is a three-dimensional structure. Besides including a substrate S, a first radiating part 1, a second radiating part 2, a third radiating part 3 (the third radiating part 3 is perpendicular to the substrate S), a grounding part 4, a short-circuit part 5, a first grounding extension part 6, and a first capacitor element C1, antenna structure A further includes an inductor element L and a second capacitor element C2. The inductance value of the inductor element L can be between 10 and 20 nH, preferably 16 nH, and the capacitance value of the second capacitor element C2 can be between 0.4 and 1.8 pF, preferably 0.6 pF, but this invention is not limited thereto. The inductor element L is coupled between the second radiating part 2 and the grounding part 4, and the second capacitor element C2 is coupled between the short-circuit part 5 and the grounding part 4. The portion of the third radiating part 3 located around the opening 30, the first radiating part 1, the short-circuit part 5, the first grounding extension part 6, and the inductor element L together generate a third operating frequency band R3. Figure 5 As shown, the third operating frequency band R3 is higher than the first operating frequency band R1, and lower than the second operating frequency band R2. The frequency range of the third operating frequency band R3 is between 698MHz and 960MHz. This invention uses an inductor L to match the third operating frequency band R3, thereby generating a dual-mode in the low-frequency range (617MHz to 960MHz), namely the first operating frequency band R1 and the third operating frequency band R3.

[0051] Continue reading Figure 4 and Figure 5 As shown, the first radiating section 1, the short-circuit section 5, and the second capacitor element C2 together generate a fourth operating frequency band R4. Figure 5As shown, the fourth operating frequency band R4 is higher than the second operating frequency band R2, and the frequency range of the fourth operating frequency band R4 is between 2200MHz and 2690MHz. In detail, the present invention can generate a frequency band in the intermediate frequency range (1450MHz to 2690MHz) through coupling between the first radiating part 1 and the short-circuit part 5. Then, the first capacitor element C1 is used for matching the first mode in the intermediate frequency range, which is the second operating frequency band R2, and the second capacitor element C2 is used for matching the second mode in the intermediate frequency range, which is the fourth operating frequency band R4, thereby generating a dual-mode intermediate frequency range. Furthermore, it is worth mentioning that in this embodiment, Figure 4 The first radiating section 1 also has a protrusion 11 extending in the positive X-axis direction. The protrusion 11 is used to couple the upper third radiating section 3 to further adjust the matching of the fourth operating frequency band R4, thereby achieving the effect of adjusting the dual-mode frequency in the intermediate frequency range.

[0052] Continue reading Figure 4 and Figure 5 As shown, the second radiating part 2 and the grounding part 4 are coupled to each other to generate a fifth operating frequency band R5, and the first radiating part 1 is used to couple the portion of the third radiating part 3 located around the opening 30 to generate a sixth operating frequency band R6. Figure 5 As shown, the sixth operating frequency band R6 is higher than the fifth operating frequency band R5, and the fifth operating frequency band R5 is higher than the fourth operating frequency band R4. The frequency range of the fifth operating frequency band R5 is between 3300MHz and 4700MHz, and the frequency range of the sixth operating frequency band R6 is between 4700MHz and 5925MHz.

[0053] As described above, a first coupling gap G1 exists between the second radiating section 2 and the grounding section 4. Adjusting the range of the first coupling gap G1 helps to optimize the impedance matching of the fifth operating frequency band R5. A second coupling gap G2 exists between the third section 53 and the first radiating section 1. Adjusting the range of the second coupling gap G2 helps to adjust the bandwidth in the intermediate frequency range (1450MHz~2690MHz). A third coupling gap G3 exists between the third section 53 and the grounding section 4. Adjusting the range of the third coupling gap G3 helps to optimize the impedance matching of the fourth operating frequency band R4. The first coupling gap G1, the second coupling gap G2, and the third coupling gap G3 are all no greater than (less than or equal to) 3mm.

[0054] Continue reading Figure 4As shown, antenna structure A also includes a second ground extension 7, which extends obliquely relative to the first ground extension 6. The second ground extension 7 connects the first ground extension 6 and the third segment 53 of the short-circuit section 5. More precisely, one end of the second ground extension 7 intersects with the first ground extension 6 and is connected to the third radiating section 3, while the other end intersects with the third segment 53 of the short-circuit section 5 and is connected to the grounding section 4. Therefore, the first radiating section 1 can be coupled to both the first ground extension 6 and the second ground extension 7 simultaneously, and the impedance matching in the low-frequency range (617MHz to 960MHz) can be adjusted through multi-path coupling (first ground extension 6 and second ground extension 7).

[0055] [Beneficial Effects of the Examples]

[0056] The beneficial effect of this invention is that the electronic device D provided by this invention generates a first operating frequency band R1, a second operating frequency band R2, a third operating frequency band R3, a fourth operating frequency band R4, a fifth operating frequency band R5, and a sixth operating frequency band R6 through the design of its internal antenna structure A, thereby supporting the entire LTE frequency band (617MHz to 5925MHz), including low frequencies. Figure 5 As shown.

[0057] Furthermore, through the structural design of antenna structure A in this invention, antenna structure A can be further miniaturized (to... Figure 4 In summary, the overall architecture of antenna structure A can maintain a size of 10.5mm in Y-axis width and 3.5mm in Z-axis height, thus enabling its application within a narrow-bezel electronic device D (such as a tablet or laptop computer). Therefore, in general, antenna structure A of the present invention can simultaneously meet the requirements of miniaturization and thinness of electronic device D while also ensuring the communication quality of electronic device D.

[0058] The above-disclosed content is only a preferred and feasible embodiment of the present invention, and is not intended to limit the scope of the claims of the present invention. Therefore, all equivalent technical changes made based on the content of the present invention specification and drawings are included within the scope of the claims of the present invention.

Claims

1. An electronic device comprising: One substrate; A first radiating portion is disposed on the substrate; A second radiating portion is disposed on the substrate and connected to the first radiating portion; A grounding portion is provided on the substrate; A short-circuit section is connected between the second radiating section and the grounding section. The short-circuit section is closer to the grounding section than the first radiating section. The short-circuit section includes a first section, a second section, and a third section. The first section is connected to the second radiating section, and the third section is connected between the second section and the grounding section. A third radiating portion is disposed on the substrate; A first grounding extension is connected between the third radiating portion and the grounding portion; A feeder is disposed on the substrate and coupled between the second radiating portion and the ground portion for feeding in a signal; as well as A first capacitor element is disposed on the substrate and coupled between the first segment and the second segment; The short-circuit portion, the first ground extension portion, and the third radiating portion are coupled to each other to generate a first operating frequency band, while the first radiating portion, the short-circuit portion, the first ground extension portion, and the third radiating portion are coupled to each other and matched by the first capacitor element to generate a second operating frequency band, which is higher than the first operating frequency band. The third section is disposed between the first radiating part and the grounding part, and the first radiating part is disposed between the third section and the third radiating part.

2. The electronic device of claim 1, further comprising an inductor coupled between the second radiating portion and the grounding portion, the third radiating portion having an opening, the first radiating portion, a portion of the third radiating portion surrounding the opening, the short-circuit portion, the first grounding extension portion, and the inductor for generating a third operating frequency band, the third operating frequency band being higher than the first operating frequency band and lower than the second operating frequency band.

3. The electronic device of claim 2, further comprising a second capacitor element coupled between the short-circuit portion and the ground portion, wherein the first radiating portion, the short-circuit portion, and the second capacitor element are used to generate a fourth operating frequency band, and the fourth operating frequency band is higher than the second operating frequency band. 4.The electronic device of claim 3, wherein, The second radiating part is coupled to the grounding part to generate a fifth operating frequency band, which is higher than the fourth operating frequency band.

5. The electronic device as claimed in claim 4, wherein, The opening is adjacent to the first radiating portion, which is used to couple the portion of the third radiating portion located around the opening to generate a sixth operating frequency band, and the sixth operating frequency band is higher than the fifth operating frequency band.

6. The electronic device as claimed in claim 1, wherein, The second radiating part and the grounding part have a first coupling gap, which is no greater than 3 mm.

7. The electronic device as claimed in claim 1, wherein, The third section and the first radiating part have a second coupling gap, which is no greater than 3 mm.

8. The electronic device as claimed in claim 1, wherein, There is a third coupling gap between the third section and the grounding part, and the third coupling gap is no greater than 3 mm.

9. The electronic device of claim 1, further comprising a second ground extension that extends obliquely relative to the first ground extension and is connected between the first ground extension and the third section of the short-circuit portion.

10. An antenna structure comprising: One substrate; A first radiating portion is disposed on the substrate; A second radiating section is disposed on the substrate and connected to the first radiating section. The second radiating section is used to couple to a feed member and feed a signal through the feed member. A grounding portion is provided on the substrate; A short-circuit section is connected between the second radiating section and the grounding section. The short-circuit section is closer to the grounding section than the first radiating section. The short-circuit section includes a first section, a second section, and a third section. The first section is connected to the second radiating section, and the third section is connected between the second section and the grounding section. A third radiating portion is disposed on the substrate; A first grounding extension, the first grounding extension being connected between the third radiating portion and the grounding portion; and A first capacitor element is disposed on the substrate and coupled between the first segment and the second segment; The short-circuit portion, the first ground extension portion, and the third radiating portion are coupled to each other to generate a first operating frequency band, while the first radiating portion, the short-circuit portion, the first ground extension portion, and the third radiating portion are coupled to each other and matched by the first capacitor element to generate a second operating frequency band, which is higher than the first operating frequency band. The third section is disposed between the first radiating part and the grounding part, and the first radiating part is disposed between the third section and the third radiating part.

11. The antenna structure of claim 10, further comprising an inductor coupled between the second radiating portion and the grounding portion, the third radiating portion having an opening, the first radiating portion, the portion of the third radiating portion surrounding the opening, the short-circuited portion, the first grounding extension portion, and the inductor are used to generate a third operating frequency band, the third operating frequency band being higher than the first operating frequency band and lower than the second operating frequency band.

12. The antenna structure of claim 11, further comprising a second capacitor element coupled between the short-circuit portion and the ground portion, wherein the first radiating portion, the short-circuit portion, and the second capacitor element are used to generate a fourth operating frequency band, and the fourth operating frequency band is higher than the second operating frequency band.

13. The antenna structure as described in claim 12, wherein, The second radiating part is coupled to the grounding part to generate a fifth operating frequency band, which is higher than the fourth operating frequency band.

14. The antenna structure as described in claim 13, wherein, The opening is adjacent to the first radiating portion, which is used to couple the portion of the third radiating portion located around the opening to generate a sixth operating frequency band, and the sixth operating frequency band is higher than the fifth operating frequency band.

15. The antenna structure of claim 10, further comprising a second ground extension that extends obliquely relative to the first ground extension and is connected between the first ground extension and the third segment of the short-circuit portion.

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