Antenna structure

Abstract

The utility model provides an antenna structure, include: feed radiation part, first radiation part, second radiation part, third radiation part, fourth radiation part, fifth radiation part, sixth radiation part and carrier assembly. First radiation part is coupled to feed radiation part. Second radiation part is coupled to feed radiation part. First radiation part and second radiation part can extend towards different directions. Third radiation part is coupled to a ground potential. First radiation part and second radiation part are all at least partially surrounded by third radiation part. Fourth radiation part is coupled to ground potential. Fourth radiation part is adjacent to feed radiation part. Fifth radiation part is coupled to ground potential. Fifth radiation part is arranged between feed radiation part and third radiation part. Sixth radiation part is coupled to ground potential. Sixth radiation part is adjacent to third radiation part.

Description

Technical Field

[0001] This utility model relates to an antenna structure, and more particularly to an antenna structure having a wideband. 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, such as mobile phones using 2G, 3G, and LTE (Long Term Evolution) systems and their respective frequency bands of 700MHz, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz, and 2500MHz. Others cover short-range wireless communication, such as Wi-Fi and Bluetooth systems using 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. Utility Model Content

[0004] In a preferred embodiment, the present invention provides an antenna structure comprising: a feed radiating section having a feed point; a first radiating section coupled to the feed radiating section; a second radiating section coupled to the feed radiating section, wherein the first radiating section and the second radiating section extend in different directions; a third radiating section coupled to a ground potential, wherein the first radiating section and the second radiating section are at least partially surrounded by the third radiating section; a fourth radiating section coupled to the ground potential, wherein the fourth radiating section is adjacent to the feed radiating section; a fifth radiating section coupled to the ground potential, wherein the fifth radiating section is disposed between the feed radiating section and the third radiating section; a sixth radiating section coupled to the ground potential, wherein the sixth radiating section is adjacent to the third radiating section; and a carrier assembly, wherein the feed radiating section, the first radiating section, the second radiating section, the third radiating section, the fourth radiating section, the fifth radiating section, and the sixth radiating section are all disposed on the carrier assembly.

[0005] In some embodiments, the antenna structure further includes: a broadened radiating portion coupled to the feed radiating portion and the second radiating portion, wherein the broadened radiating portion is generally square in shape.

[0006] In some embodiments, a first coupling gap is formed between the third radiating portion and each of the first radiating portion and the second radiating portion, and the width of the first coupling gap is between 0.5 mm and 1.5 mm.

[0007] In some embodiments, a second coupling gap is formed between the feed radiation portion and the fourth radiation portion, and the width of the second coupling gap is between 1 mm and 1.5 mm.

[0008] In some embodiments, a third coupling gap is formed between the third radiating portion and the sixth radiating portion, and the width of the third coupling gap is between 3.5 mm and 4 mm.

[0009] In some embodiments, the antenna structure covers a first frequency band, a second frequency band, a third frequency band, and a fourth frequency band, wherein the first frequency band is between 703MHz and 803MHz, the second frequency band is between 1710MHz and 1880MHz, the third frequency band is between 1880MHz and 2170MHz, and the fourth frequency band is between 2500MHz and 2690MHz.

[0010] In some embodiments, the total length of the feed radiator and the first radiator is between 0.125 times and 0.25 times the wavelength of the second frequency band.

[0011] In some embodiments, the total length of the feed radiator and the second radiator is between 0.125 times and 0.25 times the wavelength of the third frequency band.

[0012] In some embodiments, the length of the third radiating portion is between 0.125 times and 0.25 times the wavelength of the first frequency band.

[0013] In some embodiments, the length of the fourth radiating portion is between 0.125 times and 0.25 times the wavelength of the fourth frequency band. Attached Figure Description

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0015] Figure 1 This is a schematic diagram showing the antenna structure according to an embodiment of the present invention.

[0016] Figure 2This is a voltage standing wave ratio diagram showing the antenna structure according to an embodiment of the present invention.

[0017] Figure label:

[0018] 100: Antenna Structure

[0019] 110: Feed radiator

[0020] 111: First end of the feed radiator

[0021] 112: The second end of the feed radiator

[0022] 120: First Radiation Department

[0023] 121: The first end of the first radiating section

[0024] 122: The second end of the first radiating section

[0025] 130: Second Radiation Section

[0026] 131: The first end of the second radiating section

[0027] 132: The second end of the second radiating section

[0028] 140: Third Radiation Section

[0029] 141: The first end of the third radiating section

[0030] 142: The second end of the third radiating section

[0031] 145: The U-shaped portion of the third radiating section

[0032] 150: Fourth Radiation Section

[0033] 151: The first end of the fourth radiating section

[0034] 152: The second end of the fourth radiating section

[0035] 160: Fifth Radiation Department

[0036] 161: The first end of the fifth radiating section

[0037] 162: The second end of the fifth radiating section

[0038] 170: Sixth Radiation Department

[0039] 171: The first end of the sixth radiating section

[0040] 172: The second end of the sixth radiating section

[0041] 175: Specific Absorption Rate Sensor

[0042] 180: Widened radiating section

[0043] 185: Single-pole slot hole

[0044] 190: Carrier Component

[0045] 199: Signal Source

[0046] FB1: First Band

[0047] FB2: Second Band

[0048] FB3: Third Band

[0049] FB4: Fourth Band

[0050] FP: Feed Point

[0051] GC1: First coupling gap

[0052] GC2: Second coupling gap

[0053] GC3: Third coupling gap

[0054] L1, L2, L3, L4, L5, L6, L7, L8: Length

[0055] VSS: Grounding Potential

[0056] W6, W7: Width Detailed Implementation

[0057] To make the objectives, features and advantages of this utility model more apparent and understandable, specific embodiments of this utility model are described below in conjunction with the accompanying drawings for detailed explanation.

[0058] Certain terms are used in this specification and the claims to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and the claims do not distinguish components by differences in name, but by differences in function. The terms "comprising" and "including" used throughout this specification and the 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.

[0059] The following disclosure provides many different embodiments or examples to implement the various features of this invention. 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 specification 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 additional features are 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 specification. These repetitions are for simplification and clarity and are not intended to limit any specific relationship between the different embodiments and / or structures discussed.

[0060] 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 component or feature in the icon and another component or feature(s). 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.

[0061] Figure 1 This is a schematic diagram showing 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.

[0062] exist Figure 1In the embodiments, the antenna structure 100 includes at least: a feeding radiation element 110, a first radiation element 120, a second radiation element 130, a third radiation element 140, a fourth radiation element 150, a fifth radiation element 160, a sixth radiation element 170, and a carrier element 190, wherein the feeding radiation element 110, the first radiation element 120, the second radiation element 130, the third radiation element 140, the fourth radiation element 150, the fifth radiation element 160, and the sixth radiation element 170 can all be made of metal materials, such as copper, silver, aluminum, iron, or their alloys.

[0063] The feed radiator 110 can generally be shaped as a medium straight bar. Specifically, the feed radiator 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 feed radiator 110. The feeding point FP can be coupled to a signal source 199. For example, the signal source 199 can be a radio frequency (RF) module, which can be used to excite the antenna structure 100.

[0064] The first radiating section 120 may be generally a long straight strip (compared to the feed radiating section 110), and may be generally perpendicular to the feed radiating section 110. In detail, the first radiating section 120 has a first end 121 and a second end 122, wherein the first end 121 of the first radiating section 120 is coupled to the second end 112 of the feed radiating section 110, and the second end 122 of the first radiating section 120 is an open end.

[0065] The second radiating section 130 can generally present a small L-shape. Specifically, the second radiating section 130 has a first end 131 and a second end 132, wherein the first end 131 of the second radiating section 130 is coupled to the second end 112 of the feed radiating section 110 and the first end 121 of the first radiating section 120, while the second end 132 of the second radiating section 130 is an open-circuit end. For example, the second end 122 of the first radiating section 120 and the second end 132 of the second radiating section 130 can extend in different directions.

[0066] The third radiating portion 140 may generally have a meandering shape. Specifically, the third radiating portion 140 has a first end 141 and a second end 142, wherein the first end 141 is coupled to a ground voltage VSS, and the second end 142 is an open circuit. It should be noted that both the first radiating portion 120 and the second radiating portion 130 may be at least partially surrounded by the third radiating portion 140. In some embodiments, the third radiating portion 140 includes a U-shaped portion 145 to accommodate the aforementioned second radiating portion 130. In some embodiments, a first coupling gap GC1 may be formed between the third radiating portion 140 and each of the first radiating portion 120 and the second radiating portion 130.

[0067] The fourth radiating section 150 may generally have a larger L-shape (compared to the second radiating section 130) and may be disposed adjacent to the feed radiating section 110. Specifically, the fourth radiating section 150 has a first end 151 and a second end 152, wherein the first end 151 of the fourth radiating section 150 is coupled to ground potential VSS, and the second end 152 of the fourth radiating section 150 is an open-circuit end. For example, the second ends 122 of the first radiating section 120, the second end 142 of the third radiating section 140, and the second end 152 of the fourth radiating section 150 may all extend in generally the same direction. In some embodiments, a second coupling gap GC2 may be formed between the feed radiating section 110 and the fourth radiating section 150. It must be understood that the terms "adjacent" or "adjacent" in this specification may refer to a distance between corresponding components that is less than a predetermined distance (e.g., 5 mm or less), but generally do not include cases where corresponding components are in direct contact with each other (i.e., the aforementioned distance is reduced to 0).

[0068] The fifth radiating section 160 can be generally shaped as a shorter straight strip (compared to the feed radiating section 110), and it can be generally parallel to the feed radiating section 110. Specifically, the fifth radiating section 160 has a first end 161 and a second end 162, wherein the first end 161 of the fifth radiating section 160 is coupled to ground potential VSS, and the second end 162 of the fifth radiating section 160 is an open-circuit end. For example, the second end 132 of the second radiating section 130 and the second end 162 of the fifth radiating section 160 can extend in generally opposite directions. It must be noted that the fifth radiating section 160 is disposed between the feed radiating section 110 and the third radiating section 140.

[0069] The sixth radiating portion 170 may be generally rectangular and may be disposed adjacent to the third radiating portion 140. Specifically, the sixth radiating portion 170 has a first end 171 and a second end 172, wherein the first end 171 of the sixth radiating portion 170 is coupled to ground potential VSS, and the second end 172 of the sixth radiating portion 170 is an open-circuit end. For example, the width W6 of the sixth radiating portion 170 may be greater than the width of any of the other radiating portions. In some embodiments, a third coupling gap GC3 may be formed between the third radiating portion 140 and the sixth radiating portion 170.

[0070] In some embodiments, the antenna structure 100 further includes a specific absorption rate (SAR) sensor 175. The SAR sensor 175 is coupled to the sixth radiating element 170, such that the sixth radiating element 170 can serve as a sensing pad for the SAR sensor 175. Therefore, the specific absorption rate associated with the antenna structure 100 can be further reduced. It must be understood that the SAR sensor 175 is only an optional component and may be removed in other embodiments.

[0071] For example, the carrier assembly 190 can be a flexible printed circuit (FPC). The feed radiator 110, the first radiator 120, the second radiator 130, the third radiator 140, the fourth radiator 150, the fifth radiator 160, and the sixth radiator 170 can all be disposed on the same surface of the carrier assembly 190. The shape and type of the carrier assembly 190 are not particularly limited in this invention. In some embodiments, the antenna structure 100 can be a planar antenna structure. However, this invention is not limited to this. In other embodiments, the antenna structure 100 can also be modified into a three-dimensional antenna structure without affecting its radiation efficiency.

[0072] In some embodiments, the antenna structure 100 further includes a widening radiation element 180, which may be disposed adjacent to the second end 162 of the fifth radiation element 160. The widening radiation element 180 is coupled to the second end 112 of the feed radiation element 110 and the first end 131 of the second radiation element 130. For example, the widening radiation element 180 may be generally square, but is not limited thereto. In addition, a monopole slot 185 may also be formed between the second radiation element 130 and the widening radiation element 180. It must be understood that the widening radiation element 180 is only another optional component and may be removed in other embodiments.

[0073] Figure 2This is a voltage standing wave ratio (VSWR) graph showing 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 voltage standing wave ratio. 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 703MHz and 803MHz, the second frequency band FB2 can be between 1710MHz and 1880MHz, the third frequency band FB3 can be between 1880MHz and 2170MHz, and the fourth frequency band FB4 can be between 2500MHz and 2690MHz. Therefore, antenna structure 100 will at least support broadband operation for LTE (Long Term Evolution) and 5G (5th Generation Wireless Systems).

[0074] In some embodiments, the antenna structure 100 operates as follows: The third radiator 140 can generate the aforementioned first frequency band FB1. The feed radiator 110 and the first radiator 120 can generate the aforementioned second frequency band FB2. The feed radiator 110 and the second radiator 130 can generate the aforementioned third frequency band FB3. The fourth radiator 150 can generate the aforementioned fourth frequency band FB4. Based on actual measurements, the fifth radiator 160 can be used to fine-tune the impedance matching of the aforementioned third frequency band FB3, while the sixth radiator 170 can be used to fine-tune the impedance matching of the aforementioned first frequency band FB1. Additionally, the widening radiator 180 can also be used to increase the bandwidth of the aforementioned third frequency band FB3.

[0075] In some embodiments, the component dimensions of the antenna structure 100 may be as described below. The total length L1 of the feed radiator 110 and the first radiator 120 may be between 0.125 and 0.25 times the wavelength of the second frequency band FB2 of the antenna structure 100 (λ / 8 to λ / 4), for example, approximately 0.2 times the wavelength (λ / 5). The total length L2 of the feed radiator 110 and the second radiator 130 may be between 0.125 and 0.25 times the wavelength of the third frequency band FB3 of the antenna structure 100 (λ / 8 to λ / 4), for example, approximately 0.2 times the wavelength (λ / 5). The length L3 of the third radiator 140 may be between 0.125 and 0.25 times the wavelength of the first frequency band FB1 of the antenna structure 100 (λ / 8 to λ / 4), for example, approximately 0.2 times the wavelength (λ / 5). The length L4 of the fourth radiating section 150 can be between 0.125 and 0.25 times the wavelength of the fourth frequency band FB4 of the antenna structure 100 (λ / 8 to λ / 4), for example, approximately 0.2 times the wavelength (λ / 5). The length L5 of the fifth radiating section 160 can be between 4 mm and 7 mm. The length L6 of the sixth radiating section 170 can be between 15 mm and 18 mm, and the width W6 of the sixth radiating section 170 can be between 8 mm and 10 mm. The length L7 of the widened radiating section 180 can be between 4 mm and 6 mm, and the width W7 of the widened radiating section 180 can also be between 4 mm and 6 mm. The length L8 of the monopole slot 185 can be between 4 mm and 5 mm. The width of the first coupling gap GC1 can be between 0.5 mm and 1.5 mm. The width of the second coupling gap GC2 can be between 1 mm and 1.5 mm. The width of the third coupling gap GC3 can be between 3.5 mm and 4 mm. The above component size range is derived from the results of multiple experiments, which helps to optimize the operating bandwidth and impedance matching of antenna structure 100, while also minimizing the specific absorption rate associated with antenna structure 100.

[0076] In some embodiments, the aforementioned antenna structure 100 can be applied to a mobile router (not shown) to enable it to support wireless communication functionality. For example, the aforementioned antenna structure 100 can be attached to an inner wall of a non-conductive housing of the mobile router, but is not limited thereto.

[0077] This invention proposes a novel antenna structure. Compared with traditional designs, this invention has advantages such as small size, wide bandwidth, and low specific absorption rate, making it well-suited for various mobile communication devices or the Internet of Things.

[0078] It is worth noting that the component dimensions, shapes, and frequency ranges described above are not limiting conditions of this invention. Antenna designers can adjust these settings according to different needs. The antenna structure of this invention is not limited to the state illustrated in Figures 1-2. This invention may include only any one or more features of any one or more embodiments shown in Figures 1-2. In other words, not all features shown in the figures need to be implemented simultaneously in the antenna structure of this invention.

[0079] The ordinal numbers in this specification and the claims, such as "first", "second", "third", etc., are not sequential in any particular order; they are only used to distinguish between two different components with the same name.

[0080] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. An antenna structure, characterized by include: A feed radiator has a feed point; A first radiating section is coupled to the feed radiating section; A second radiating section is coupled to the feed radiating section, wherein the first radiating section and the second radiating section extend in different directions; A third radiating part is coupled to a ground potential, wherein the first radiating part and the second radiating part are at least partially surrounded by the third radiating part; A fourth radiating section is coupled to the ground potential, wherein the fourth radiating section is adjacent to the feed radiating section; A fifth radiating section is coupled to the ground potential, wherein the fifth radiating section is disposed between the feed radiating section and the third radiating section; A sixth radiating part, coupled to the ground potential, wherein the sixth radiating part is adjacent to the third radiating part; and A carrier assembly, wherein the feed radiation section, the first radiation section, the second radiation section, the third radiation section, the fourth radiation section, the fifth radiation section, and the sixth radiation section are all disposed on the carrier assembly.

2. The antenna structure of claim 1, wherein, Including: An augmented radiating section is coupled to the feed radiating section and the second radiating section, wherein the augmented radiating section is approximately square in shape.

3. The antenna structure of claim 1, wherein, A first coupling gap is formed between the third radiating part and each of the first radiating part and the second radiating part, and the width of the first coupling gap is between 0.5 mm and 1.5 mm.

4. The antenna structure of claim 1, wherein, A second coupling gap is formed between the feed radiation section and the fourth radiation section, and the width of the second coupling gap is between 1 mm and 1.5 mm.

5. The antenna structure of claim 1, wherein, A third coupling gap is formed between the third radiating part and the sixth radiating part, and the width of the third coupling gap is between 3.5 mm and 4 mm.

6. The antenna structure of claim 1, wherein, The antenna structure covers a first frequency band, a second frequency band, a third frequency band, and a fourth frequency band. The first frequency band is between 703MHz and 803MHz, the second frequency band is between 1710MHz and 1880MHz, the third frequency band is between 1880MHz and 2170MHz, and the fourth frequency band is between 2500MHz and 2690MHz.

7. The antenna structure of claim 6, wherein, The total length of the feed radiator and the first radiator is between 0.125 times and 0.25 times the wavelength of the second frequency band.

8. The antenna structure of claim 6, wherein, The total length of the feed radiator and the second radiator is between 0.125 times and 0.25 times the wavelength of the third frequency band.

9. The antenna structure of claim 6, wherein, The length of the third radiating element is between 0.125 and 0.25 times the wavelength of the first frequency band.

10. The antenna structure of claim 6, wherein, The length of the fourth radiating element is between 0.125 and 0.25 times the wavelength of the fourth frequency band.

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