Antenna structure

Abstract

The utility model provides an antenna structure which comprises a first radiation part, a second radiation part, a third radiation part, a fourth radiation part, a fifth radiation part, a sixth radiation part, a seventh radiation part, an eighth radiation part, a ninth radiation part and a carrier assembly. The first radiation part is provided with a feed-in point. The second radiation part is coupled to the first radiation part. The third radiation part is coupled to the first radiation part. The fourth radiation portion is coupled to a ground potential. The fourth radiation part is adjacent to the first radiation part. The fifth radiation portion is coupled to a ground potential. The fifth radiation part is adjacent to the first radiation part. The sixth radiation part is coupled to the third radiation part. The sixth radiation part is adjacent to the fourth radiation part. The seventh radiation part is coupled to the fourth radiation part. The eighth radiation part is coupled to the fourth radiation part. The ninth radiation part is coupled to the fourth radiation part.

Description

TECHNICAL FIELD

[0001] The utility model relates to an antenna structure, in particular to an antenna structure with wideband. BACKGROUND

[0002] With the development of mobile communication technology, mobile devices have become increasingly popular in recent years. Common examples include laptop computers, mobile phones, multimedia players, and other portable electronic devices with mixed functions. To meet people's needs, mobile devices usually have wireless communication functions. Some cover long-range wireless communication ranges, such as mobile phones using 2G, 3G, LTE (Long Term Evolution) systems and their 700MHz, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz, and 2500MHz frequency bands for communication. Some cover short-range wireless communication ranges, such as Wi-Fi, Bluetooth systems using 2.4GHz, 5.2GHz, and 5.8GHz frequency bands for communication.

[0003] Antennas are indispensable components in the field of wireless communication. If the antenna used to receive or transmit signals has a narrow operational bandwidth, it can easily cause the communication quality of the mobile device to decline. Therefore, designing a small-size, wideband antenna structure is an important issue for designers. SUMMARY

[0004] 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 first radiating portion; a third radiating portion coupled to the first radiating portion; a fourth radiating portion coupled to a ground potential, wherein the fourth radiating portion is adjacent to the first radiating portion; a fifth radiating portion coupled to the ground potential, wherein the fifth radiating portion is adjacent to the first radiating portion; a sixth radiating portion coupled to a first connection point on the third radiating portion, wherein the sixth radiating portion is adjacent to the fourth radiating portion; and a seventh radiating portion coupled to the fourth radiating portion. 2TWCN_202503051532331440617_110018964.docxTWCN A second connection point on the fourth radiating part; an eighth radiating part coupled to a third connection point on the fourth radiating part; a ninth radiating part coupled to a fourth connection point on the fourth radiating part; and a carrier assembly, wherein the first radiating part, the second radiating part, the third radiating part, the fourth radiating part, the fifth radiating part, the sixth radiating part, the seventh radiating part, the eighth radiating part, and the ninth radiating part are all disposed on the carrier assembly.

[0005] In some embodiments, the fourth radiating portion has a meandering shape.

[0006] In some embodiments, the combination of the third radiating portion and the sixth radiating portion presents an inverted T-shape.

[0007] In some embodiments, the seventh radiating portion includes a first portion and a second portion, wherein the first portion and the second portion form an obtuse angle.

[0008] In some embodiments, the eighth radiating portion includes an end-widening portion.

[0009] In some embodiments, the antenna structure covers a first frequency band, a second frequency band, and a third frequency band, wherein the first frequency band is between 699MHz and 960MHz, the second frequency band is between 1710MHz and 2170MHz, and the third frequency band is between 2500MHz and 2690MHz.

[0010] In some embodiments, the total length of the first radiating portion and the second radiating portion is approximately equal to 0.25 times the wavelength of the first frequency band.

[0011] In some embodiments, the total length of the first radiating portion and the third radiating portion is approximately equal to 0.25 times the wavelength of the second frequency band.

[0012] In some embodiments, the length of the fourth radiating element is approximately equal to 0.25 times the wavelength of the first frequency band.

[0013] In some embodiments, the length of the fifth radiating element is approximately equal to 0.25 times the wavelength of the third 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 2 This 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: First Radiation Section

[0020] 111: The first end of the first radiating section

[0021] 112: The second end of the first radiating section

[0022] 120: Second Radiation Section

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

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

[0025] 130: Third Radiation Section

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

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

[0028] 140: Fourth Radiation Department

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

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

[0031] 150: Fifth Radiation Department

[0032] 151: The first end of the fifth radiating section

[0033] 152: The second end of the fifth radiating section

[0034] 160: Sixth Radiation Department

[0035] 161: The first end of the sixth radiating section

[0036] 162: The second end of the sixth radiating section

[0037] 170: Seventh Radiation Department

[0038] 171: The first end of the seventh radiating section

[0039] 172: The second end of the seventh radiating section

[0040] 174: The first part of the seventh radiating section

[0041] 175: The second part of the seventh radiating section

[0042] 180: Eighth Radiation Department

[0043] 181: The first end of the eighth radiating section

[0044] 182: The second end of the eighth radiating section

[0045] 185: Widened portion at the end of the eighth radiating section

[0046] 190: Ninth Radiation Department

[0047] 191: The first end of the ninth radiating section

[0048] 192: The second end of the ninth radiating section

[0049] 199: Signal Source

[0050] 200: Carrier Component

[0051] CP1: First connection point

[0052] CP2: Second connection point

[0053] CP3: Third Connection Point

[0054] CP4: Fourth Connection Point

[0055] FB1: First Band

[0056] FB2: Second Band

[0057] FB3: Third Band

[0058] FP: Feed Point

[0059] GC1: First coupling gap

[0060] GC2: Second coupling gap

[0061] GC3: Third coupling gap

[0062] L1, L2, L3, L4, L5, L6, L7, L8: Length

[0063] VSS: Grounding Potential

[0064] θ: obtuse angle Detailed Implementation

[0065] 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.

[0066] 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.

[0067] 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 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 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.

[0068] 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.

[0069] 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.

[0070] exist Figure 1 In one embodiment, the antenna structure 100 includes: a first radiating element 110, a second radiating element 120, a third radiating element 130, a fourth radiating element 140, a fifth radiating element 150, a sixth radiating element 160, a seventh radiating element 170, an eighth radiating element 180, a ninth radiating element 190, and a carrier element 200. The first radiating element 110, the second radiating element 120, the third radiating element 130, the fourth radiating element 140, the fifth radiating element 150, the sixth radiating element 160, the seventh radiating element 170, the eighth radiating element 180, and the ninth radiating element 190 can all be made of metal, such as copper, silver, aluminum, iron, or their alloys.

[0071] 251056 2TWCN_202503051532331440617_110018964.docxTWCN

[0072] The first radiating section 110 can generally be shaped as a long straight strip. 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. The feeding point FP can further 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.

[0073] The second radiating section 120 can generally be in the shape of an elongated L. In detail, the second radiating section 120 has a first end 121 and a second end 122, wherein the first end 121 of the second radiating section 120 is coupled to the second end 112 of the first radiating section 110, and the second end 122 of the second radiating section 120 is an open end.

[0074] The third radiating section 130 can generally present a shorter L-shape (compared to the second radiating section 120). In detail, 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 the second end 112 of the first radiating section 110, and the second end 132 of the third radiating section 130 is an open-circuit end.

[0075] The fourth radiating portion 140 may generally have a meandering shape. 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 a ground voltage VSS, and the second end 142 of the fourth radiating portion 140 is an open-circuit end. For example, the ground voltage VSS may be provided by a system ground plane of the antenna structure 100 (not shown). In some embodiments, the fourth radiating portion 140 is adjacent to the first radiating portion 110, wherein a first coupling gap GC1 may be formed between the first radiating portion 110 and the fourth radiating portion 140. In some embodiments, the second end 122 of the second radiating portion 120 and the second end 142 of the fourth radiating portion 140 may also be adjacent to each other and aligned. It should be noted that the terms “adjacent” or “adjacent” in this specification may refer to a distance between two corresponding components that is less than a predetermined distance (e.g., 10 mm or less), but generally do not include cases where the two corresponding components are in direct contact with each other (i.e., the aforementioned distance is reduced to 0).

[0076] The fifth radiating portion 150 may be generally a medium-length straight strip (compared to the first radiating portion 110) and may be generally parallel to the first radiating portion 110. 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 ground potential VSS, and the second end 152 of the fifth radiating portion 150 is an open-circuit end. For example, the second ends 122 of the second radiating portion 120, the second end 142 of the fourth radiating portion 140, and the second end 152 of the fifth radiating portion 150 may all extend in generally the same direction. In some embodiments, the fifth radiating portion 150 is adjacent to the first radiating portion 110, wherein a second coupling gap GC2 may be formed between the first radiating portion 110 and the fifth radiating portion 150. In some embodiments, the first radiating portion 110 is disposed between the fourth radiating portion 140 and the fifth radiating portion 150.

[0077] The sixth radiating section 160 may generally be a shorter, straight strip (compared to the fifth radiating section 150). Specifically, the sixth radiating section 160 has a first end 161 and a second end 162, wherein the first end 161 is coupled to a first connection point CP1 on the third radiating section 130, and the second end 162 is an open-circuit end. For example, the second ends 132 of the third radiating section 130 and 162 of the sixth radiating section 160 may extend in generally opposite directions. In some embodiments, the combination of the third radiating section 130 and the sixth radiating section 160 may generally form an inverted T-shape. In some embodiments, the sixth radiating section 160 is adjacent to the fourth radiating section 140, wherein a third coupling gap GC3 may be formed between the fourth radiating section 140 and the sixth radiating section 160.

[0078] The seventh radiating portion 170 may generally have a bent shape. Specifically, the seventh radiating portion 170 has a first end 171 and a second end 172, wherein the first end 171 of the seventh radiating portion 170 is coupled to a second connection point CP2 on the fourth radiating portion 140, and the second end 172 of the seventh radiating portion 170 is an open-circuit end. In some embodiments, the seventh radiating portion 170 includes a first portion 174 and a second portion 175 coupled to each other. For example, an obtuse angle θ may be formed between the first portion 174 and the second portion 175 of the seventh radiating portion 170. In some embodiments, the seventh radiating portion 170 may also be generally surrounded by the first radiating portion 110, the third radiating portion 130, and the fourth radiating portion 140.

[0079] The eighth radiating section 180 may generally be a straight strip of unequal width. Specifically, the eighth radiating section 180 has a first end 181 and a second end 182, wherein the first end 181 of the eighth radiating section 180 is coupled to a third connection point CP3 on the fourth radiating section 140, and the second end 182 of the eighth radiating section 180 is an open-circuit end. In some embodiments, the eighth radiating section 180 further includes a terminal widening portion 185 located at its second end 182.

[0080] The ninth radiating section 190 can generally be shaped like an inverted U. Specifically, the ninth radiating section 190 has a first end 191 and a second end 192, wherein the first end 191 of the ninth radiating section 190 is coupled to a fourth connection point CP4 on the fourth radiating section 140, and the second end 192 of the ninth radiating section 190 is an open-circuit end. For example, the second end 162 of the sixth radiating section 160 and the second end 192 of the ninth radiating section 190 can both extend in approximately the same direction.

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[0082] The first radiating part 110, the second radiating part 120, the third radiating part 130, the fourth radiating part 140, the fifth radiating part 150, the sixth radiating part 160, the seventh radiating part 170, the eighth radiating part 180, and the ninth radiating part 190 can all be disposed on the same surface of the carrier assembly 200. The shape and type of the carrier assembly 200 are not particularly limited in this invention. For example, the carrier assembly 200 can be an FR4 (Flame Retardant 4) substrate, a printed circuit board (PCB), or a flexible printed circuit (FPC). 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.

[0083] Figure 2 This 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 2Based on the measurement results, antenna structure 100 can cover a first frequency band FB1, a second frequency band FB2, and a third frequency band FB3. For example, the first frequency band FB1 can be between 699MHz and 960MHz, the second frequency band FB2 can be between 1710MHz and 2170MHz, and the third frequency band FB3 can be between 2500MHz and 2690MHz. Therefore, antenna structure 100 will at least support broadband operation of LTE (Long Term Evolution).

[0084] In some embodiments, the operating principle of the antenna structure 100 is as follows. The first radiating section 110 and the second radiating section 120 can generate the aforementioned first frequency band FB1. The first radiating section 110 and the third radiating section 130 can generate the aforementioned second frequency band FB2. The fourth radiating section 140 can be coupled and excited by the first radiating section 110 to increase the bandwidth of the aforementioned first frequency band FB1. The fifth radiating section 150 can also be coupled and excited by the first radiating section 110 to generate the aforementioned third frequency band FB3. The sixth radiating section 160 can be used to fine-tune the impedance matching of the aforementioned second frequency band FB2. Additionally, the seventh radiating section 170, the eighth radiating section 180, and the ninth radiating section 190 can all be used to fine-tune the impedance matching of the aforementioned first frequency band FB1. According to actual measurement results, the radiation performance of the antenna structure 100 proposed in this invention is not easily negatively affected by surrounding metal components (not shown).

[0085] In some embodiments, the component dimensions of the antenna structure 100 may be as described below. The total length L1 of the first radiating part 110 and the second radiating part 120 may be approximately equal to 0.25 times the wavelength (λ / 4) of the first frequency band FB1 of the antenna structure 100. The total length L2 of the first radiating part 110 and the third radiating part 130 may be approximately equal to 0.25 times the wavelength (λ / 4) of the second frequency band FB2 of the antenna structure 100. The length L3 of the fourth radiating part 140 may be approximately equal to 0.25 times the wavelength (λ / 4) of the first frequency band FB1 of the antenna structure 100. The length L4 of the fifth radiating part 150 may be approximately equal to 0.25 times the wavelength (λ / 4) of the third frequency band FB3 of the antenna structure 100. The length L5 of the sixth radiating part 160 may be between 5 mm and 10 mm. The length L6 of the seventh radiating part 170 may be between 10 mm and 15 mm. The length L7 of the eighth radiating part 180 may be between 8 mm and 12 mm. The length L8 of the ninth radiating section 190 can be between 10 mm and 13 mm. The width of the first coupling gap GC1 can be between 0.5 mm and 1 mm. The width of the second coupling gap GC2 can be between 0.5 mm and 1 mm. The width of the third coupling gap GC3 can be between 0.1 mm and 0.4 mm. The obtuse angle θ can be between 100 degrees and 160 degrees, for example, approximately 140 degrees, approximately 145 degrees, or approximately 150 degrees. The above component size ranges are derived from multiple experimental results, which help optimize the operating bandwidth and impedance matching of the antenna structure 100, while also minimizing environmental interference factors of the antenna structure 100.

[0086] In some embodiments, the aforementioned antenna structure 100 can be applied to a point-of-sale (POS) system (not shown). Since the POS system includes the aforementioned antenna structure 100, it will be able to support wireless communication functionality. In some embodiments, the POS system further includes a radio frequency (RF) circuit, a filter, an amplifier, a processor, and / or a housing, but is not limited thereto.

[0087] This invention proposes a novel antenna structure. Compared with traditional designs, this invention has advantages such as small size, wide bandwidth, and low environmental interference, making it well-suited for various mobile communication devices or the Internet of Things.

[0088] 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.

[0089] 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.

[0090] 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 in that, include: A first radiating section has a feed point; A second radiating part is coupled to the first radiating part; A third radiating section is coupled to the first radiating section; A fourth radiating part is coupled to a ground potential, wherein the fourth radiating part is adjacent to the first radiating part; A fifth radiating part is coupled to the ground potential, wherein the fifth radiating part is adjacent to the first radiating part; A sixth radiating part is coupled to a first connection point on the third radiating part, wherein the sixth radiating part is adjacent to the fourth radiating part; A seventh radiating section is coupled to a second connection point on the fourth radiating section; An eighth radiating section is coupled to a third connection point on the fourth radiating section; A ninth radiating section, coupled to a fourth connection point on the fourth radiating section; and A carrier assembly, wherein the first radiating part, the second radiating part, the third radiating part, the fourth radiating part, the fifth radiating part, the sixth radiating part, the seventh radiating part, the eighth radiating part, and the ninth radiating part are all disposed on the carrier assembly.

2. The antenna structure as described in claim 1, characterized in that, The fourth radiating part has a meandering shape.

3. The antenna structure as described in claim 1, characterized in that, The combination of the third and sixth radiating parts forms an inverted T-shape.

4. The antenna structure as described in claim 1, characterized in that, The seventh radiating part includes a first part and a second part, and the first part and the second part form an obtuse angle.

5. The antenna structure as described in claim 1, characterized in that, The eighth radiating section includes an end-widening portion.

6. The antenna structure as described in claim 1, characterized in that, The antenna structure covers a first frequency band, a second frequency band, and a third frequency band. The first frequency band is between 699MHz and 960MHz, the second frequency band is between 1710MHz and 2170MHz, and the third frequency band is between 2500MHz and 2690MHz.

7. The antenna structure as described in claim 6, characterized in that, The total length of the first radiating part and the second radiating part is approximately equal to 0.25 times the wavelength of the first frequency band.

8. The antenna structure as described in claim 6, characterized in that, The total length of the first radiating section and the third radiating section is approximately equal to 0.25 times the wavelength of the second frequency band.

9. The antenna structure as described in claim 6, characterized in that, The length of the fourth radiating element is approximately equal to 0.25 times the wavelength of the first frequency band.

10. The antenna structure as described in claim 6, characterized in that, The length of the fifth radiating element is approximately equal to 0.25 times the wavelength of the third frequency band.

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