Antenna structure

Abstract

The utility model provides an antenna structure. The antenna structure comprises a feed-in radiation part, a first radiation part, a second radiation part, a third radiation part, a fourth radiation part, a fifth radiation part and a sixth radiation part. The feed-in radiation part is provided with a feed-in point. The first radiation part is coupled to the feed-in radiation part. The second radiation part is coupled to the feed-in radiation part. The third radiation portion is coupled to a ground potential. The third radiation part is adjacent to the feed-in radiation part. The fourth radiation part is coupled to the third radiation part, wherein the fourth radiation part is adjacent to the first radiation part. The first radiation part is at least partially surrounded by the fourth radiation part. The fifth radiation part is coupled to the third radiation part, wherein the fifth radiation part is adjacent to the second radiation part. The sixth radiation portion is coupled to a ground potential, wherein the sixth radiation portion is adjacent to the feed-in radiation portion.

Description

Technical Field

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

[0002] With the advancement of mobile communication technology, mobile devices have become increasingly common in recent years. Common examples include laptops, mobile phones, multimedia players, and other hybrid portable electronic devices. To meet people's needs, mobile devices often include wireless communication capabilities. Some cover long-range wireless communication, such as mobile phones using 2G, 3G, and LTE (Long Term Evolution) systems and their use of 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 2.4GHz, 5.2GHz, and 5.8GHz frequency bands.

[0003] Antennas are essential components in wireless communications. If the operating bandwidth of an antenna used to receive or transmit signals is too narrow, communication quality can be degraded in mobile devices. Therefore, designing a compact, broadband antenna structure is a crucial challenge for designers. Utility Model Content

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

[0005] In some embodiments, the first radiating portion includes a first segment, a second segment, a third segment, and a fourth segment, there is a first angle between the first segment and the second segment, there is a second angle between the second segment and the third segment, and there is a third angle between the third segment and the fourth segment.

[0006] In some embodiments, each of the first angle, the second angle, and the third angle is an obtuse angle.

[0007] In some embodiments, a first coupling gap is formed between the feed radiation portion and the third radiation portion, a second coupling gap is formed between the first radiation portion and the fourth radiation portion, a third coupling gap is formed between the second radiation portion and the fifth radiation portion, and a fourth coupling gap is formed between the feed radiation portion and the sixth radiation portion, and the width of each of the first coupling gap, the second coupling gap, the third coupling gap, and the fourth coupling gap is less than or equal to 2 mm.

[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, the first frequency band is between 700 MHz and 960 MHz, the second frequency band is between 1710 MHz and 1900 MHz, the third frequency band is between 1900 MHz and 2170 MHz, and the fourth frequency band is between 2400 MHz and 2700 MHz.

[0009] In some embodiments, a total length of the feed radiation portion and the first radiation portion is substantially equal to 0.25 times the wavelength of the first frequency band.

[0010] In some embodiments, a total length of the feed radiation portion and the second radiation portion is substantially equal to 0.25 times the wavelength of the third frequency band.

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

[0012] In some embodiments, a total length of the third radiating portion and the fifth radiating portion is substantially equal to 0.25 times the wavelength of the second frequency band.

[0013] In some embodiments, the length of the sixth radiating portion is substantially equal to 0.25 times the wavelength of the fourth frequency band. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following describes in detail the specific embodiments of the present invention in conjunction with the accompanying drawings, wherein:

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

[0016] Figure 2 FIG. 1 is a diagram showing the voltage standing wave ratio of the antenna structure according to an embodiment of the present invention.

[0017] Reference numerals:

[0018] 100: Antenna structure

[0019] 110: Feed radiation part

[0020] 111: first end of the feed radiation portion

[0021] 112: Feeding the second end of the radiation portion

[0022] 120: First radiation part

[0023] 121: first end of the first radiation portion

[0024] 122: second end of the first radiation portion

[0025] 124: First section

[0026] 125: Second Section

[0027] 126: The third section

[0028] 127: Section 4

[0029] 128: The arc-shaped concave portion of the third section

[0030] 129: Semicircular notch

[0031] 130: Second radiation part

[0032] 131: first end of the second radiation portion

[0033] 132: second end of the second radiation portion

[0034] 140: The third radiation

[0035] 141: first end of the third radiation portion

[0036] 142: Second end of the third radiation portion

[0037] 150: The fourth radiation

[0038] 151: first end of the fourth radiation portion

[0039] 152: Second end of the fourth radiation portion

[0040] 154: Fifth Section

[0041] 155: Section 6

[0042] 156: Section 7

[0043] 160: Fifth Radiation Department

[0044] 161: first end of the fifth radiation portion

[0045] 162: Second end of the fifth radiation portion

[0046] 170: Sixth Radiation Department

[0047] 171: first end of the sixth radiation portion

[0048] 172: Second end of the sixth radiation portion

[0049] 180:Carrier component

[0050] 190:Signal Source

[0051] FB1: First frequency band

[0052] FB2: Second frequency band

[0053] FB3: Third frequency band

[0054] FB4: Fourth frequency band

[0055] FP: Feed Point

[0056] GC1: First coupling gap

[0057] GC2: Second coupling gap

[0058] GC3: Third coupling gap

[0059] GC4: Fourth coupling gap

[0060] L1, L2, L3, L4, L5: Length

[0061] R1: Radius

[0062] VSS: Ground potential

[0063] θ1: first angle

[0064] θ2: second angle

[0065] θ3: the third angle

[0066] θ4: the fourth angle

[0067] θ5: fifth angle DETAILED DESCRIPTION

[0068] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are given below and described in detail with reference to the accompanying drawings.

[0069] Certain terms are used throughout the specification and claims to refer to specific components. Those skilled in the art will appreciate that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in their functionality. The terms "including" and "comprising" used throughout the specification and claims are open-ended and should be interpreted as meaning "including, but not limited to." The term "substantially" means that within an acceptable error range, a person skilled in the art can solve the technical problem and achieve the basic technical effect. Furthermore, the term "coupled" in this specification includes any direct and indirect electrical connection means. Therefore, if a first device is described as being 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.

[0070] The following disclosure provides many different embodiments or examples for implementing the different features of the present invention. The following disclosure describes specific examples of various components and their arrangements to simplify the description. 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 means that it may include an embodiment in which the first feature and the second feature are in direct contact, and may also include an embodiment in which an additional feature is formed between the first feature and the second feature, so that the first feature and the second feature may not be in direct contact. In addition, the same reference symbols and / or marks may be reused in different examples in the following specification. These repetitions are for the purpose of simplicity and clarity, and are not intended to limit the specific relationship between the different embodiments and / or structures discussed.

[0071] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," "upper," and similar terms are used to facilitate describing the relationship of one component or feature to another component or feature in a diagram. These spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may be rotated 90 degrees or in other orientations, and the spatially relative terms used herein should be interpreted accordingly.

[0072] Figure 1This figure shows an antenna structure 100 according to an embodiment of the present invention. Antenna structure 100 can be used in a mobile device, such as a smartphone, a tablet computer, a notebook computer, a wireless access point, a router, or any other device with communication capabilities. Alternatively, antenna structure 100 can be used in an electronic device, such as any unit in the Internet of Things (IoT).

[0073] like Figure 1 As shown, the antenna structure 100 includes: 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 180, 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 alloys thereof.

[0074] The feed radiating portion 110 can be generally shaped like a long straight strip. Specifically, the feed radiating portion 110 has a first end 111 and a second end 112 , with a feeding point FP located at the first end 111 of the feed radiating portion 110 . 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 that can be used to excite the antenna structure 100 .

[0075] The first radiating portion 120 can generally exhibit a meandering shape. Specifically, the first radiating portion 120 has a first end 121 and a second end 122, wherein the first end 121 of the first radiating portion 120 is coupled to the second end 112 of the feed radiating portion 110, and the second end 122 of the first radiating portion 120 is an open end. In some embodiments, the first radiating portion 120 includes a first segment 124, a second segment 125, a third segment 126, and a fourth segment 127, wherein the first segment 124 and the second segment 125 have a first angle θ1, the second segment 125 and the third segment 126 have a second angle θ2, and the third segment 126 and the fourth segment 127 have a third angle θ3. For example, each of the first angle θ1, the second angle θ2, and the third angle θ3 can be an obtuse angle, but is not limited thereto. In some embodiments, the third section 126 includes an arc concave portion 128 having a semicircular notch 129.

[0076] The second radiating portion 130 can be generally in the shape of a short straight strip and can be generally perpendicular to the feed radiating portion 110. Specifically, the second radiating portion 130 has a first end 131 and a second end 132. The first end 131 of the second radiating portion 130 is coupled to the second end 112 of the feed radiating portion 110, while the second end 132 of the second radiating portion 130 is an open end.

[0077] The third radiating portion 140 can be generally N-shaped or Z-shaped. Specifically, the third radiating portion 140 has a first end 141 and a second end 142, wherein the first end 141 of the third radiating portion 140 is coupled to a ground voltage VSS. For example, the ground voltage VSS can be provided by a system ground plane (not shown). In some embodiments, the third radiating portion 140 is adjacent to the feed radiating portion 110, wherein a first coupling gap GC1 can be formed between the feed radiating portion 110 and the third radiating portion 140. It should be noted that the terms "adjacent" or "adjacent" in this specification may refer to a situation where the distance between the corresponding two components is less than a predetermined distance (e.g., 10 mm or less), but generally do not include a situation where the corresponding two components are in direct contact with each other (i.e., the aforementioned distance is shortened to 0).

[0078] The fourth radiating portion 150 can generally exhibit another serpentine shape, wherein the first radiating portion 120 can be at least partially surrounded by the fourth radiating portion 150. Specifically, the fourth radiating portion 150 has a first end 151 and a second end 152. The first end 151 of the fourth radiating portion 150 is coupled to the second end 142 of the third radiating portion 140, while the second end 152 of the fourth radiating portion 150 is open. In some embodiments, the fourth radiating portion 150 includes a fifth segment 154, a sixth segment 155, and a seventh segment 156. A fourth angle θ4 is defined between the fifth segment 154 and the sixth segment 155, while a fifth angle θ5 is defined between the sixth segment 155 and the seventh segment 156. For example, the fourth angle θ4 can be approximately equal to the first angle θ1, and the fifth angle θ5 can be approximately equal to the second angle θ2, but the present invention is not limited thereto. In some embodiments, the fourth radiating portion 150 is adjacent to the first radiating portion 120 , wherein a second coupling gap GC2 is formed between the first radiating portion 120 and the fourth radiating portion 150 .

[0079] The fifth radiating portion 160 may be generally rectangular and may be generally perpendicular to the third radiating portion 140 and the fourth radiating portion 150. Specifically, the fifth radiating portion 160 has a first end 161 and a second end 162. The first end 161 of the fifth radiating portion 160 is coupled to the second end 142 of the third radiating portion 140, while the second end 162 of the fifth radiating portion 160 is open. For example, the second end 132 of the second radiating portion 130 and the second end 162 of the fifth radiating portion 160 may extend in generally opposite directions. In some embodiments, the fifth radiating portion 160 is adjacent to the second radiating portion 130, and a third coupling gap GC3 may be formed between the second radiating portion 130 and the fifth radiating portion 160.

[0080] The sixth radiating portion 170 can be substantially in the shape of a straight strip and can be substantially parallel to the feed radiating portion 110. Specifically, the sixth radiating portion 170 has a first end 171 and a second end 172. The first end 171 of the sixth radiating portion 170 is coupled to the ground potential VSS, while the second end 172 of the sixth radiating portion 170 is open. In some embodiments, the sixth radiating portion 170 can be located on one side (e.g., the left side) of the feed radiating portion 110, while the third radiating portion 140 can be located on the opposite side (e.g., the right side) of the feed radiating portion 110. In other words, the feed radiating portion 110 can be disposed between the third radiating portion 140 and the sixth radiating portion 170. In some embodiments, the sixth radiating portion 170 is adjacent to the feed radiating portion 110, and a fourth coupling gap GC4 can be formed between the feed radiating portion 110 and the sixth radiating portion 170.

[0081] The feed radiating portion 110, the first radiating portion 120, the second radiating portion 130, the third radiating portion 140, the fourth radiating portion 150, the fifth radiating portion 160, and the sixth radiating portion 170 can all be disposed on the same surface of the carrier component 180. The shape and type of the carrier component 180 are not particularly limited in the present invention. For example, the carrier component 180 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.

[0082] Figure 2 1 is a graph showing the voltage standing wave ratio (VSWR) of the antenna structure 100 according to an embodiment of the present invention, wherein 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, the 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 700 MHz and 960 MHz, the second frequency band FB2 can be between 1710 MHz and 1900 MHz, the third frequency band FB3 can be between 1900 MHz and 2170 MHz, and the fourth frequency band FB4 can be between 2400 MHz and 2700 MHz. Therefore, the antenna structure 100 can at least support wideband operation of LTE (Long Term Evolution).

[0083] In some embodiments, the operating principles of the antenna structure 100 may be as follows. The feed radiating element 110 and the first radiating element 120 may be excited to generate the aforementioned first frequency band FB1. The third radiating element 140 and the fourth radiating element 150 may be excited by the feed radiating element 110 and the first radiating element 120, thereby increasing the bandwidth of the aforementioned first frequency band FB1. The third radiating element 140 and the fifth radiating element 160 may be excited to generate the aforementioned second frequency band FB2. The feed radiating element 110 and the second radiating element 130 may be excited to generate the aforementioned third frequency band FB3. Furthermore, the sixth radiating element 170 itself may be excited to generate the aforementioned fourth frequency band FB4.

[0084] In some embodiments, the component dimensions of the antenna structure 100 may be as follows. The combined length L1 of the feed radiating portion 110 and the first radiating portion 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 combined length L2 of the feed radiating portion 110 and the second radiating portion 130 may be approximately equal to 0.25 times the wavelength (λ / 4) of the third frequency band FB3 of the antenna structure 100. The combined length L3 of the third radiating portion 140 and the fourth radiating portion 150 may be approximately equal to 0.25 times the wavelength (λ / 4) of the first frequency band FB1 of the antenna structure 100. The combined length L4 of the third radiating portion 140 and the fifth radiating portion 160 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 L5 of the sixth radiating portion 170 may be approximately equal to 0.25 times the wavelength (λ / 4) of the fourth frequency band FB4 of the antenna structure 100. The width of each of the first coupling gap GC1, the second coupling gap GC2, the third coupling gap GC3, and the fourth coupling gap GC4 can be less than or equal to 2 mm. The first angle θ1 and the fourth angle θ4 can both be between 95 degrees and 120 degrees. The second angle θ2 and the fifth angle θ5 can both be between 110 degrees and 150 degrees. The third angle θ3 can be between 95 degrees and 130 degrees. The radius R1 of the semicircular notch 129 of the arc-shaped concave portion 128 of the third section 126 can be between 0.5 mm and 1 mm. The above component size ranges are based on multiple experimental results and help optimize the operational bandwidth and impedance matching of the antenna structure 100.

[0085] The present invention proposes a novel antenna structure. Compared with conventional designs, the present invention has advantages such as small size, wide bandwidth, and reduced manufacturing cost, making it suitable for application in various mobile communication devices or the Internet of Things.

[0086] It is worth noting that the above-mentioned component size, component shape, and frequency range are not the limitations of the present invention. Antenna designers can adjust these settings according to different needs. The antenna structure of the present invention is not limited to Figure 1-2 The utility model may only include Figure 1-2 In other words, not all features shown in the figures need to be implemented in the antenna structure of the present invention at the same time.

[0087] In this specification and claims, ordinal numbers, such as "first", "second", "third", etc., have no sequential relationship with each other and are only used to distinguish two different components with the same name.

[0088] 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 may make slight 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 based on the definition of the claims.

Claims

1. An antenna structure, characterized in that: include: A feeding radiation portion having a feeding point; a first radiation portion coupled to the feed radiation portion; a second radiation portion coupled to the feed radiation portion; a third radiating portion coupled to a ground potential, wherein the third radiating portion is adjacent to the feeding radiating portion; a fourth radiating portion coupled to the third radiating portion, wherein the fourth radiating portion is adjacent to the first radiating portion, and the first radiating portion is at least partially surrounded by the fourth radiating portion; a fifth radiating portion coupled to the third radiating portion, wherein the fifth radiating portion is adjacent to the second radiating portion; a sixth radiating portion coupled to the ground potential, wherein the sixth radiating portion is adjacent to the feeding radiating portion; and A carrier component is provided, wherein the feed radiation part, the first radiation part, the second radiation part, the third radiation part, the fourth radiation part, the fifth radiation part, and the sixth radiation part are all disposed on the carrier component.

2. The antenna structure according to claim 1, wherein: The first radiating portion includes a first section, a second section, a third section, and a fourth section. There is a first angle between the first section and the second section, a second angle between the second section and the third section, and a third angle between the third section and the fourth section.

3. The antenna structure according to claim 2, wherein: Each of the first angle, the second angle, and the third angle is an obtuse angle.

4. The antenna structure according to claim 1, wherein: A first coupling gap is formed between the feeding radiation portion and the third radiation portion, a second coupling gap is formed between the first radiation portion and the fourth radiation portion, a third coupling gap is formed between the second radiation portion and the fifth radiation portion, and a fourth coupling gap is formed between the feeding radiation portion and the sixth radiation portion, and a width of each of the first coupling gap, the second coupling gap, the third coupling gap, and the fourth coupling gap is less than or equal to 2 mm.

5. The antenna structure according to 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 700MHz and 960MHz, the second frequency band is between 1710MHz and 1900MHz, the third frequency band is between 1900MHz and 2170MHz, and the fourth frequency band is between 2400MHz and 2700MHz.

6. The antenna structure according to claim 5, wherein: The total length of the feed radiation portion and the first radiation portion is substantially equal to 0.25 times the wavelength of the first frequency band.

7. The antenna structure according to claim 5, wherein: The total length of the feeding radiation portion and the second radiation portion is substantially equal to 0.25 times the wavelength of the third frequency band.

8. The antenna structure according to claim 5, wherein: The total length of the third radiation portion and the fourth radiation portion is substantially equal to 0.25 times the wavelength of the first frequency band.

9. The antenna structure according to claim 5, wherein: The total length of the third radiation portion and the fifth radiation portion is substantially equal to 0.25 times the wavelength of the second frequency band.

10. The antenna structure according to claim 5, wherein: The length of the sixth radiation portion is substantially equal to 0.25 times the wavelength of the fourth frequency band.

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