Antenna structure and electronic device

Abstract

An antenna structure and an electronic device are disclosed. The antenna structure includes a first radiating portion, a second radiating portion, a third radiating portion, a fourth radiating portion, and a fifth radiating portion. The first radiating portion has a feed point. The second radiating portion is coupled to the feed point, wherein the second radiating portion is at least partially surrounded by the first radiating portion. The third radiating portion is coupled to a ground potential. The fourth radiating portion is coupled to the third radiating portion. The fifth radiating portion is coupled to the third radiating portion, wherein the fifth radiating portion is at least partially surrounded by the third radiating portion and the fourth radiating portion.

Description

Technical Field

[0001] This invention relates to an antenna structure, and more particularly to a wideband antenna structure. Background Technology

[0002] With the advancement of mobile communication technology, mobile devices have become increasingly common in recent years, such as laptops, mobile phones, multimedia players, and other portable electronic devices with multiple functions. To meet people's needs, mobile devices typically have wireless communication capabilities. Some cover long-range wireless communication ranges; for example, mobile phones use 2G, 3G, and LTE (Long Term Evolution) systems and the frequency bands they use: 700MHz, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz, and 2500MHz. Others cover short-range wireless communication ranges; for example, Wi-Fi and Bluetooth systems use the frequency bands of 2.4GHz, 5.2GHz, and 5.8GHz.

[0003] Antennas are indispensable components in wireless communication. If the operating bandwidth of an antenna used for receiving or transmitting signals is too narrow, it can easily lead to a degradation in the communication quality of mobile devices. Therefore, designing a small-size, wide-bandwidth antenna structure is an important task for designers. Summary of the Invention

[0004] The purpose of this disclosure is to propose an antenna structure to solve at least one of the above-mentioned problems.

[0005] In a preferred embodiment, the present invention provides an antenna structure comprising: a first radiating portion having a feed point; a second radiating portion coupled to the feed point, wherein the second radiating portion is at least partially surrounded by the first radiating portion; a third radiating portion coupled to a ground potential; a fourth radiating portion coupled to the third radiating portion; and a fifth radiating portion coupled to the third radiating portion, wherein the fifth radiating portion is at least partially surrounded by the third radiating portion and the fourth radiating portion.

[0006] In some embodiments, the antenna structure is a planar antenna structure.

[0007] In some embodiments, the antenna structure further includes a dielectric substrate, wherein the first radiating portion, the second radiating portion, the third radiating portion, the fourth radiating portion, and the fifth radiating portion are all disposed on the dielectric substrate.

[0008] In some embodiments, the antenna structure covers a first frequency band, a second frequency band, a third frequency band, and a fourth frequency band.

[0009] In some embodiments, the first frequency band is between 2400MHz and 2500MHz, the second frequency band is between 3300MHz and 4200MHz, the third frequency band is between 4400MHz and 5000MHz, and the fourth frequency band is between 5150MHz and 7125MHz.

[0010] In some embodiments, the first radiating portion is in the shape of an inverted U.

[0011] In some embodiments, the length of the first radiating portion is between 0.15 and 0.17 times the wavelength of the first frequency band.

[0012] In some embodiments, the second radiating portion includes an end-bent portion.

[0013] In some embodiments, the distance between the end bends of the first radiating portion and the second radiating portion is between 2.8 mm and 3.3 mm.

[0014] In some embodiments, the length of the second radiating portion is between 0.15 and 0.17 times the wavelength of the fourth frequency band.

[0015] In some embodiments, the third radiating portion includes a first wider portion and a first narrower portion, the first wider portion being coupled to the ground potential, and the fourth radiating portion being coupled to the first wider portion via the first narrower portion.

[0016] In some embodiments, the distance between the first radiating portion and the first wider portion of the third radiating portion is between 2.8 mm and 3.3 mm.

[0017] In some embodiments, the fourth radiating portion includes an end-widened portion.

[0018] In some embodiments, the combination of the third radiating portion and the fourth radiating portion presents an inverted U-shape.

[0019] In some embodiments, the total length of the third radiating portion and the fourth radiating portion is between 0.15 and 0.17 times the wavelength of the third frequency band.

[0020] In some embodiments, the fifth radiating part is in the shape of an inverted L.

[0021] In some embodiments, the fifth radiating portion includes a second wider portion and a second narrower portion, and the second narrower portion is coupled to the third radiating portion via the second wider portion.

[0022] In some embodiments, the distance between the second narrower portion of the fifth radiating portion and the first wider portion of the third radiating portion is between 3.3 mm and 3.7 mm.

[0023] In some embodiments, the total length of the third radiating portion and the fifth radiating portion is between 0.15 and 0.17 times the wavelength of the second frequency band.

[0024] In another preferred embodiment, the present invention provides an electronic device comprising: an antenna structure as described above; and a communication module coupled to the antenna structure, enabling the electronic device to support wireless communication functionality.

[0025] The beneficial effects of this invention are that it proposes a novel antenna structure and electronic device. Compared with conventional designs, this invention has advantages such as small size, wide bandwidth, and low manufacturing cost, making it well-suited for application in various mobile communication devices or the Internet of Things. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of an antenna structure according to an embodiment of the present invention.

[0027] Figure 2 This is a return loss diagram of an antenna structure according to an embodiment of the present invention.

[0028] Figure 3 This is a radiation efficiency diagram of an antenna structure according to an embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram of an electronic device according to an embodiment of the present invention.

[0030] The attached figures are labeled as follows:

[0031] 100: Antenna Structure

[0032] 110: First Radiation Department

[0033] 111: The first end of the first radiating section

[0034] 112: The second end of the first radiating section

[0035] 118: First Gap Area

[0036] 120: Second Radiation Section

[0037] 121: The first end of the second radiating section

[0038] 122: The second end of the second radiating section

[0039] 125: The bent portion at the end of the second radiating section

[0040] 130: Third Radiation Section

[0041] 131: The first end of the third radiating section

[0042] 132: The second end of the third radiating section

[0043] 134: The first wider portion of the third radiating section

[0044] 135: The first narrower section of the third radiating part

[0045] 138: Second gap area

[0046] 140: Fourth Radiation Department

[0047] 141: The first end of the fourth radiating section

[0048] 142: The second end of the fourth radiating section

[0049] 145: Widened portion at the end of the fourth radiating section

[0050] 150: Fifth Radiation Department

[0051] 151: The first end of the fifth radiating section

[0052] 152: The second end of the fifth radiating section

[0053] 154: The second wider section of the fifth radiating part

[0054] 155: The second narrower section of the fifth radiating part

[0055] 160: Dielectric substrate

[0056] 190: Signal Source

[0057] 400: Electronic Devices

[0058] 410: Communication Module

[0059] D1, D2, D3: Spacing

[0060] FB1: First Band

[0061] FB2: Second Band

[0062] FB3: Third Band

[0063] FB4: Fourth Band

[0064] FP: Feed Point

[0065] H1: Thickness

[0066] L1, L2, L3, L4, LT: Length

[0067] W1, W2, W31, W32, W33, W41, W42, WT: Width

[0068] VSS: Grounding Potential Detailed Implementation

[0069] To make the objectives, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below in conjunction with the accompanying drawings.

[0070] Certain terms are used in the specification and claims to refer to specific elements. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same element. This specification and claims do not distinguish elements by differences in name, but rather by differences in function. The terms "comprising" and "including" used throughout the specification and claims are open-ended and should be interpreted as "including but not limited to". The term "generally" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and achieve the basic technical effect within a certain margin of error. Furthermore, the term "coupled" in this specification includes any direct and indirect electrical connection means. Therefore, if a first device is described as coupled to a second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device via other devices or connection means.

[0071] The following disclosure provides numerous different embodiments or examples to implement the various features of this application. The following disclosure describes specific examples of the various components and their arrangements for simplification. Of course, these specific examples are not intended to be limiting. For example, if this disclosure describes a first feature formed on or above a second feature, it indicates that it may include embodiments where the first and second features are in direct contact, or embodiments where an additional feature is formed between the first and second features, so that the first and second features may not be in direct contact. Furthermore, the same reference numerals and / or designations may be repeated in different examples of the following disclosure. These repetitions are for simplification and clarity and are not intended to limit any specific relationship between the different embodiments and / or structures discussed.

[0072] Furthermore, spatially related terms, such as "below," "below," "lower," "above," "higher," and similar terms, are used to facilitate the description of the relationship between one element or feature and another(s) in the illustration. In addition to the orientations shown in the accompanying drawings, these spatially related terms are intended to encompass different orientations of the device in use or operation. The device may be rotated to different orientations (90 degrees or other orientations), and the spatially related terms used herein can be interpreted in the same way.

[0073] Figure 1 This is a schematic diagram of an antenna structure 100 according to an embodiment of the present invention. The antenna structure 100 can be incorporated into a mobile device, such as a smartphone, tablet computer, notebook computer, wireless access point, router, or any device with communication capabilities. Alternatively, the antenna structure 100 can be incorporated into an electronic device, such as any unit in an Internet of Things (IoT) system.

[0074] like Figure 1 As shown, the antenna structure 100 includes at least a first radiating element 110, a second radiating element 120, a third radiating element 130, a fourth radiating element 140, and a fifth radiating element 150, wherein the first radiating element 110, the second radiating element 120, the third radiating element 130, the fourth radiating element 140, and the fifth radiating element 150 can all be made of metal materials, such as copper, silver, aluminum, iron, or their alloys.

[0075] The first radiating section 110 can generally be shaped like an inverted U, defining a first notch region 118. Specifically, the first radiating section 110 has a first end 111 and a second end 112, wherein a feeding point FP is located at the first end 111 of the first radiating section 110, and the second end 112 of the first radiating section 110 is an open end. The feeding point FP can be further coupled to a signal source 190. For example, the signal source 190 can be a radio frequency (RF) module, which can be used to excite the antenna structure 100.

[0076] The second radiating portion 120 may generally be in the shape of an inverted J and may be disposed within the aforementioned first notch region 118. That is, the second radiating portion 120 is at least partially surrounded by the first radiating portion 110. Specifically, the second radiating portion 120 has a first end 121 and a second end 122, wherein the first end 121 of the second radiating portion 120 is coupled to the feed point FP, and the second end 122 of the second radiating portion 120 is an open-circuit end. In some embodiments, the second radiating portion 120 includes a terminal bending portion 125 adjacent to the second end 122 of the second radiating portion 120. It should be noted that the terms "adjacent" or "adjacent" in this specification may refer to a distance between two corresponding elements that is less than a predetermined distance (e.g., 5 mm or less), or may include a situation where two corresponding elements are in direct contact with each other (that is, the aforementioned distance is shortened to 0). For example, the terminal bending portion 125 of the second radiating portion 120 may generally be in the shape of a C. In addition, the width W2 of the second radiating part 120 may be smaller than the width W1 of the first radiating part 110.

[0077] The third radiating section 130 can generally be in the shape of an inverted L, and can be completely separated from both the first radiating section 110 and the second radiating section 120. Specifically, the third radiating section 130 has a first end 131 and a second end 132, wherein the first end 131 of the third radiating section 130 is coupled to a ground voltage VSS. For example, the ground voltage VSS can be provided by a system ground plane of the antenna structure 100 (not shown). In some embodiments, the third radiating section 130 is a variable-width structure and includes a first wider portion 134 adjacent to the first end 131 and a first narrower portion 135 adjacent to the second end 132, wherein the first wider portion 134 is coupled to the ground voltage VSS, and the fourth radiating section 140 is coupled to the first wider portion 134 via the first narrower portion 135.

[0078] The fourth radiating portion 140 may be generally straight and may be generally parallel to the first wider portion 134 of the third radiating portion 130. The combination of the third radiating portion 130 and the fourth radiating portion 140 may generally form an inverted U-shape, defining a second gap region 138. Specifically, the fourth radiating portion 140 has a first end 141 and a second end 142, wherein the first end 141 of the fourth radiating portion 140 is coupled to the second end 132 of the third radiating portion 130, and the second end 142 of the fourth radiating portion 140 is an open-circuit end. In some embodiments, the fourth radiating portion 140 includes a terminal widening portion 145 adjacent to the second end 142 of the fourth radiating portion 140.

[0079] The fifth radiating portion 150 may generally be in the shape of an inverted L and may be disposed within the aforementioned second notch region 138. That is, the fifth radiating portion 150 is at least partially surrounded by the third radiating portion 130 and the fourth radiating portion 140. Specifically, the fifth radiating portion 150 has a first end 151 and a second end 152, wherein the first end 151 of the fifth radiating portion 150 is coupled to the second end 132 of the third radiating portion 130, and the second end 152 of the fifth radiating portion 150 is an open end. For example, the second end 142 of the fourth radiating portion 140 and the second end 152 of the fifth radiating portion 150 may extend in generally the same direction. In some embodiments, the fifth radiating portion 150 has another unequal width structure and includes a second wider portion 154 adjacent to the first end 151 and a second narrower portion 155 adjacent to the second end 152, wherein the second narrower portion 155 is coupled to the third radiating portion 130 via the second wider portion 154.

[0080] In some embodiments, the antenna structure 100 further includes a dielectric substrate 160. For example, the dielectric substrate 160 may be an FR4 (Flame Retardant 4) substrate, a printed circuit board (PCB), or a flexible printed circuit (FPC). The first radiating portion 110, the second radiating portion 120, the third radiating portion 130, the fourth radiating portion 140, and the fifth radiating portion 150 may all be disposed on the same surface of the dielectric substrate 160, so that the antenna structure 100 may be a planar antenna structure. However, the present invention is not limited thereto. In other embodiments, the first radiating portion 110, the second radiating portion 120, the third radiating portion 130, the fourth radiating portion 140, and the fifth radiating portion 150 may also be disposed on different surfaces of a nonconductive support element to form a three-dimensional antenna structure.

[0081] Figure 2 This is a return loss diagram of the antenna structure 100 according to an embodiment of the present invention, where the horizontal axis represents the operating frequency (MHz) and the vertical axis represents the return loss (dB). Figure 2 Based on the measurement results, antenna structure 100 can cover a first frequency band FB1, a second frequency band FB2, a third frequency band FB3, and a fourth frequency band FB4. For example, the first frequency band FB1 can be between 2400MHz and 2500MHz, the second frequency band FB2 can be between 3300MHz and 4200MHz, the third frequency band FB3 can be between 4400MHz and 5000MHz, and the fourth frequency band FB4 can be between 5150MHz and 7125MHz. Therefore, antenna structure 100 will at least support broadband operation of next-generation 5G communication (5th Generation Mobile Networks) and Wi-Fi 6E.

[0082] In some embodiments, the operating principle of the antenna structure 100 may be as follows: The first radiating part 110 can generate a first frequency band FB1 of the antenna structure 100. The second radiating part 120 can generate a fourth frequency band FB4 of the antenna structure 100. The third radiating part 130 and the fourth radiating part 140 can jointly generate a third frequency band FB3 of the antenna structure 100. The third radiating part 130 and the fifth radiating part 150 can jointly generate a second frequency band FB2 of the antenna structure 100. According to actual measurement results, the end bend 125 of the second radiating part 120 can be used to increase the operating bandwidth of the fourth frequency band FB4. The unequal width structure of the third radiating part 130 can be used to improve the radiation efficiency of the second frequency band FB2 and the third frequency band FB3. The unequal width structure of the fifth radiating part 150 can be used to improve the radiation efficiency of the second frequency band FB2. It should be noted that since all the radiating elements for 5G communication and Wi-Fi 6E can be integrated into a single antenna structure 100, the overall size of the antenna structure 100 can be effectively miniaturized.

[0083] Figure 3 This is a radiation efficiency diagram of the antenna structure 100 according to an embodiment of the present invention, where the horizontal axis represents the operating frequency (MHz) and the vertical axis represents the radiation efficiency (%). Figure 3 The measurement results show that the radiation efficiency of the antenna structure 100 in the aforementioned first frequency band FB1, second frequency band FB2, third frequency band FB3, and fourth frequency band FB4 can all reach at least 30%, which can meet the actual application requirements of general communication systems.

[0084] In some embodiments, the component dimensions of the antenna structure 100 may be as described below. The length L1 of the first radiating portion 110 may be between 0.15 and 0.17 times the wavelength (0.15λ to 0.17λ) of the first frequency band FB1 of the antenna structure 100. The width W1 of the first radiating portion 110 may be between 1.2 mm and 2.1 mm. The length L2 of the second radiating portion 120 may be between 0.15 and 0.17 times the wavelength (0.15λ to 0.17λ) of the fourth frequency band FB4 of the antenna structure 100. The width W2 of the second radiating portion 120 may be between 0.8 mm and 1.2 mm. The total length L3 of the third radiating portion 130 and the fourth radiating portion 140 may be between 0.15 and 0.17 times the wavelength (0.15λ to 0.17λ) of the third frequency band FB3 of the antenna structure 100. In the third radiating section 130, the width W31 of the first wider portion 134 can be between 2.8 mm and 3.5 mm, while the width W32 of the first narrower portion 135 can be between 0.8 mm and 1.2 mm. The width W33 of the end widened portion 145 of the fourth radiating section 140 can be between 1.4 mm and 2 mm. The total length L4 of the third radiating section 130 and the fifth radiating section 150 can be between 0.15 and 0.17 times the wavelength of the second frequency band FB2 of the antenna structure 100 (0.15λ to 0.17λ). In the fifth radiating section 150, the width W41 of the second wider portion 154 can be between 0.8 mm and 1.2 mm, while the width W42 of the second narrower portion 155 can be between 0.6 mm and 1 mm. The thickness H1 of the dielectric substrate 160 can be between 0.4 mm and 0.6 mm. The dielectric constant of the dielectric substrate 160 can be between 4 and 5. The distance D1 between the end bends 125 of the first radiating portion 110 and the second radiating portion 120 can be between 2.8 mm and 3.3 mm. The distance D2 between the first wider portion 134 of the first radiating portion 110 and the third radiating portion 130 can be between 2.8 mm and 3.3 mm. The distance D3 between the first wider portion 134 of the third radiating portion 130 and the second narrower portion 155 of the fifth radiating portion 150 can be between 3.3 mm and 3.7 mm. The total length LT of the antenna structure 100 can be less than or equal to 30 mm. The total width WT of the antenna structure 100 can be less than or equal to 10 mm. The above dimensions and parameter ranges are derived from multiple experimental results and help to optimize the operating bandwidth and impedance matching of the antenna structure 100.

[0085] Figure 4 This is a schematic diagram of an electronic device 400 according to an embodiment of the present invention. The electronic device 400 can be applied to an Internet of Things (IoT). Figure 4As shown, the electronic device 400 includes an antenna structure 100 and a communication module 410, wherein the various features of the antenna structure 100 are as previously described. Figures 1-3 As described in the embodiments. On the other hand, the communication module 410 is coupled to the antenna structure 100, enabling the electronic device 400 to support wireless communication functionality. For example, the communication module 410 may include a signal source, a radio frequency circuit, a filter, an amplifier, and / or a processor, but is not limited thereto. In this embodiment of the invention, the communication module 410 may simultaneously support Wireless Local Area Network (WLAN) services and Wireless Wide Area Network (WWAN) services, but is not limited thereto. Figure 4 The remaining features of the electronic device 400 are all the same as Figure 1 Since the antenna structures 100 are similar, both embodiments can achieve similar operational effects. In another embodiment of the present invention, the electronic device 400 includes an antenna structure 100, a first communication module, and a second communication module (not shown), wherein the first communication module supports wireless local area network services, the second communication module supports wireless wide area network services, and the antenna structure 100 is coupled / connected to the first communication module and the second communication module respectively.

[0086] This invention proposes a novel antenna structure and electronic device. Compared with traditional designs, this invention has advantages such as small size, wide bandwidth, and low manufacturing cost, making it well-suited for various mobile communication devices or the Internet of Things.

[0087] It is worth noting that the component dimensions, shapes, and frequency ranges described above are not limiting factors of this invention. Antenna designers can adjust these settings according to different needs. The antenna structure and electronic device of this invention are not limited to... Figures 1-4 The state illustrated. This invention may include only... Figures 1-4 Any one or more features of any one or more embodiments. In other words, not all the features illustrated need to be implemented simultaneously in the antenna structure and electronic device of the present invention.

[0088] The ordinal numbers in this specification and claims, such as "first", "second", "third", etc., are not sequential in any way; they are only used to distinguish two different elements with the same name.

[0089] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the scope of the invention. Those skilled in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. An antenna structure, comprising: A first radiating section has a feed point; A second radiating portion is coupled to the feed point, wherein the second radiating portion is at least partially surrounded by the first radiating portion; A third radiating section is coupled to a ground potential; A fourth radiating section is coupled to the third radiating section; as well as A fifth radiating portion is coupled to the third radiating portion, wherein the fifth radiating portion is at least partially surrounded by the third radiating portion and the fourth radiating portion; The antenna structure covers a first frequency band, and the length of the first radiating part is between 0.15 and 0.17 times the wavelength of the first frequency band. The third radiating portion includes a first wider portion and a first narrower portion. The first wider portion is coupled to the ground potential, and the fourth radiating portion is coupled to the first wider portion via the first narrower portion. The ground potential to which the third radiating portion is coupled is close to the feed point of the first radiating portion.

2. The antenna structure as described in claim 1, wherein the antenna structure is a planar antenna structure.

3. The antenna structure as described in claim 1, further comprising: A dielectric substrate, wherein the first radiating portion, the second radiating portion, the third radiating portion, the fourth radiating portion, and the fifth radiating portion are all disposed on the dielectric substrate.

4. The antenna structure as described in claim 1, wherein the antenna structure further includes a second frequency band, a third frequency band, and a fourth frequency band.

5. The antenna structure as claimed in claim 4, wherein the first frequency band is between 2400MHz and 2500MHz, the second frequency band is between 3300MHz and 4200MHz, the third frequency band is between 4400MHz and 5000MHz, and the fourth frequency band is between 5150MHz and 7125MHz.

6. The antenna structure as claimed in claim 1, wherein the first radiating part is in the shape of an inverted U.

7. The antenna structure as claimed in claim 1, wherein the second radiating portion includes an end-bent portion.

8. The antenna structure as claimed in claim 7, wherein the distance between the end bends of the first radiating portion and the second radiating portion is between 2.8 mm and 3.3 mm.

9. The antenna structure of claim 4, wherein the length of the second radiating part is between 0.15 and 0.17 times the wavelength of the fourth frequency band.

10. The antenna structure of claim 1, wherein the distance between the first wider portion of the first radiating portion and the third radiating portion is between 2.8 mm and 3.3 mm.

11. The antenna structure of claim 1, wherein the fourth radiating portion includes a widened end portion.

12. The antenna structure as claimed in claim 1, wherein the combination of the third radiating part and the fourth radiating part presents an inverted U-shape.

13. The antenna structure as claimed in claim 4, wherein the total length of the third radiating part and the fourth radiating part is between 0.15 times and 0.17 times the wavelength of the third frequency band.

14. The antenna structure as claimed in claim 1, wherein the fifth radiating part is in the shape of an inverted L.

15. The antenna structure of claim 1, wherein the fifth radiating portion includes a second wider portion and a second narrower portion, and the second narrower portion is coupled to the third radiating portion via the second wider portion.

16. The antenna structure of claim 15, wherein the distance between the second narrower portion of the fifth radiating portion and the first wider portion of the third radiating portion is between 3.3 mm and 3.7 mm.

17. The antenna structure of claim 4, wherein the total length of the third radiating part and the fifth radiating part is between 0.15 times and 0.17 times the wavelength of the second frequency band.

18. An electronic device comprising: The antenna structure as described in claim 1; as well as A communication module is coupled to the antenna structure, enabling the electronic device to support wireless communication functionality.

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