Antenna structure

Abstract

The utility model provides an antenna structure. The antenna structure comprises a feed-in radiation part, an extension radiation part, a grounding radiation part and a carrier assembly. The feed-in radiation part is coupled to a feed-in point, wherein the feed-in radiation part can approximately present a winding shape. The extending radiation part is coupled to the feed-in radiation part, wherein the width of the extending radiation part can be larger than that of the feed-in radiation part. The grounding radiation part is coupled to a grounding point, wherein the grounding radiation part is adjacent to the feed-in radiation part. The feed-in radiation part, the extension radiation part and the grounding radiation part can be arranged on the carrier assembly.

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 radiating portion coupled to a feed point, wherein the feed radiating portion is generally serpentine in shape; an extended radiating portion coupled to the feed radiating portion, wherein the width of the extended radiating portion is greater than the width of the feed radiating portion; a ground radiating portion coupled to a ground point, wherein the ground radiating portion is adjacent to the feed radiating portion; and a carrier component, wherein the feed radiating portion, the extended radiating portion, and the ground radiating portion are all disposed on the carrier component.

[0005] In some embodiments, the antenna structure further includes: a transmission line coupled to a signal source and disposed on the carrier component, wherein the transmission line is implemented by a coplanar waveguide.

[0006] In some embodiments, the antenna structure further includes: a matching circuit coupled to the transmission line and disposed on the carrier component, wherein the matching circuit provides the feeding point and the grounding point.

[0007] In some embodiments, the feed radiation portion includes a first portion, a second portion, and a third portion, the second portion is coupled between the first portion and the third portion, and the third portion is substantially parallel to the first portion.

[0008] In some embodiments, a first coupling gap is formed between the ground radiation portion and the first portion of the feed radiation portion, and a width of the first coupling gap is between 1 mm and 1.2 mm.

[0009] In some embodiments, a second coupling gap is formed between the ground radiation portion and the third portion of the feed radiation portion, and a width of the second coupling gap is between 0.2 mm and 0.3 mm.

[0010] In some embodiments, the antenna structure covers a first frequency band, a second frequency band, and a third frequency band, the first frequency band is between 2400 MHz and 2500 MHz, the second frequency band is between 5150 MHz and 5850 MHz, and the third frequency band is between 5925 MHz and 7125 MHz.

[0011] In some embodiments, the length of the extended radiation portion is substantially equal to the length of the feeding radiation portion.

[0012] In some embodiments, a total length of the feed radiation portion and the extended radiation portion is substantially equal to 0.25 times the wavelength of the first frequency band.

[0013] In some embodiments, the length of the ground radiating portion is substantially equal to 0.25 times the wavelength of the second 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 1 It 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 return loss of the antenna structure according to an embodiment of the present invention.

[0017] Figure 3 It is a schematic diagram showing an antenna structure according to an embodiment of the present invention.

[0018] Figure 4 FIG2 is a schematic diagram showing a wearable device according to an embodiment of the present invention.

[0019] Reference numerals:

[0020] 100,300: Antenna structure

[0021] 110: Feed radiation part

[0022] 111: first end of the feed radiation portion

[0023] 112: Feeding the second end of the radiation portion

[0024] 114: The first part of the feed radiation part

[0025] 115: Feeding the second part of the radiation part

[0026] 116: The third part of the feed radiation part

[0027] 120: Extended radiation part

[0028] 121: first end of the extended radiation portion

[0029] 122: The second end of the extended radiation portion

[0030] 130: Ground radiation part

[0031] 131: First end of the grounded radiation portion

[0032] 132: Second end of the grounded radiation portion

[0033] 170,370:Carrier component

[0034] 350: Transmission Line

[0035] 360: Matching Circuit

[0036] 390:Signal Source

[0037] 400: Wearable device

[0038] 480: Non-conductive frame assembly

[0039] FB1: First frequency band

[0040] FB2: Second frequency band

[0041] FB3: Third frequency band

[0042] FP: Feed Point

[0043] GC1: First coupling gap

[0044] GC2: Second coupling gap

[0045] GP: Grounding point

[0046] L1, L2, L3: Length

[0047] W1, W2, W3: width DETAILED DESCRIPTION

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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).

[0053] like Figure 1 As shown, the antenna structure 100 includes: a feeding radiation element 110, an extension radiation element 120, a grounding radiation element 130, and a carrier element 170, wherein the feeding radiation element 110, the extension radiation element 120, and the grounding radiation element 130 can all be made of metal materials, such as copper, silver, aluminum, iron, or alloys thereof.

[0054] The feeding radiating portion 110 may generally present a meandering shape, such as a Z-shape or an N-shape, but is not limited thereto. In detail, the feeding radiating portion 110 has a first end 111 and a second end 112, and the first end 111 of the feeding radiating portion 110 is coupled to a feeding point FP. In some embodiments, the feeding radiating portion 110 includes a first portion 114 adjacent to the first end 111, a second portion 115, and a third portion 116 adjacent to the second end 112, wherein the second portion 115 is coupled between the first portion 114 and the third portion 116. In the feeding radiating portion 110, the second portion 115 may be substantially perpendicular to both the first portion 114 and the third portion 116, while the third portion 116 may be substantially parallel to the first portion 114. It should be noted that the term "adjacent" or "adjacent" in this specification may refer to a situation where the distance between two corresponding components is less than a predetermined distance (for example, 5 mm or shorter), and may also include a situation where the two corresponding components are in direct contact with each other (that is, the aforementioned distance is shortened to 0).

[0055] The extended radiating portion 120 can generally be in the shape of a wide straight strip. Specifically, the extended radiating portion 120 has a first end 121 and a second end 122. The first end 121 of the extended radiating portion 120 is coupled to the second end 112 of the feed radiating portion 110, while the second end 122 of the extended radiating portion 120 is an open end. In some embodiments, the length L2 of the extended radiating portion 120 is approximately equal to the length L1 of the feed radiating portion 110. In some embodiments, the width W2 of the extended radiating portion 120 is greater than the width W1 of the feed radiating portion 110.

[0056] The ground radiating portion 130 can be generally shaped like a narrower straight strip (compared to the extended radiating portion 120). Specifically, the ground radiating portion 130 has a first end 131 and a second end 132. The first end 131 of the ground radiating portion 130 is coupled to a ground point (GP), while the second end 132 of the ground radiating portion 130 is open. For example, the second end 122 of the extended radiating portion 120 and the second end 132 of the ground radiating portion 130 can extend in substantially the same direction. In some embodiments, the width W2 of the extended radiating portion 120 is also greater than the width W3 of the ground radiating portion 130. In some embodiments, the ground radiating portion 130 is adjacent to the feed radiating portion 110. A first coupling gap GC1 is formed between the ground radiating portion 130 and the first portion 114 of the feed radiating portion 110, while a second coupling gap GC2 is formed between the ground radiating portion 130 and the third portion 116 of the feed radiating portion 110.

[0057] In some embodiments, the feed point FP can be further coupled to a positive electrode of a signal source (not shown), while a negative electrode of the signal source can be coupled to the ground point GP. For example, the signal source can be a radio frequency (RF) module that can be used to excite the antenna structure 100.

[0058] The feed radiating portion 110, the extended radiating portion 120, and the ground radiating portion 130 can all be disposed on the same surface of the carrier component 170. The shape and type of the carrier component 170 are not particularly limited in the present invention. For example, the carrier component 170 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. In other embodiments, the antenna structure 100 can also be modified into a three-dimensional antenna structure.

[0059] Figure 2 1 is a graph showing the return loss 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 return loss (dB). Figure 2 Based on the measurement results, the 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 2400MHz and 2500MHz, the second frequency band (FB2) can be between 5150MHz and 5850MHz, and the third frequency band (FB3) can be between 5925MHz and 7125MHz. Therefore, the antenna structure 100 can support at least WLAN (Wireless Local Area Network), Wi-Fi 6E, and Wi-Fi 7 broadband operations.

[0060] In some embodiments, the operating principle of the antenna structure 100 can be described as follows. The feed radiating portion 110 and the extended radiating portion 120 can generate the aforementioned first frequency band FB1. The ground radiating portion 130 can generate the aforementioned second frequency band FB2. Furthermore, a coupling effect can be induced between the ground radiating portion 130 and each of the feed radiating portion 110 and the extended radiating portion 120, thereby generating the aforementioned third frequency band FB3. According to actual measurement results, the unequal width design of the feed radiating portion 110 and the extended radiating portion 120 can also be used to increase the bandwidth of the aforementioned first frequency band FB1.

[0061] In some embodiments, the component dimensions of the antenna structure 100 may be as follows. The length L1 of the feed radiating portion 110 may be approximately equal to 0.125 times the wavelength (λ / 8) of the first frequency band FB1 of the antenna structure 100. The width W1 of the feed radiating portion 110 may be between 0.5 mm and 1 mm. The length L2 of the extension radiating portion 120 may be approximately equal to 0.125 times the wavelength (λ / 8) of the first frequency band FB1 of the antenna structure 100. The width W2 of the extension radiating portion 120 may be between 2.5 mm and 3 mm. The total length (L1+L2) of the feed radiating portion 110 and the extension 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 length L3 of the ground radiating portion 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 width W3 of the ground radiating portion 130 may be between 0.5 mm and 1 mm. The width of the first coupling gap GC1 can be between 1 mm and 1.2 mm. The width of the second coupling gap GC2 can be between 0.2 mm and 0.3 mm. The above component size ranges are based on multiple experimental results and help optimize the operating bandwidth and impedance matching of the antenna structure 100.

[0062] Figure 3 is a schematic diagram showing an antenna structure 300 according to an embodiment of the present invention. Figure 3 and Figure 1 Similar. Figure 3 In the embodiment, the antenna structure 300 further includes a transmission line 350 and a matching circuit 360, wherein both the transmission line 350 and the matching circuit 360 are disposed on a carrier component 370 of the antenna structure 300. The transmission line 350 is coupled to a signal source 390. For example, the transmission line 350 can be implemented as a coplanar waveguide (CPW). The matching circuit 360 is coupled to the transmission line 350, wherein the matching circuit 360 provides a feed point FP and a ground point GP. For example, the matching circuit 360 can be implemented as a π-type circuit, which can further include one or more inductors and / or one or more capacitors (not shown). Because the transmission line 350 can be well integrated with the carrier component 370, the antenna structure 300 can effectively solve the problem of the lack of design flexibility of traditional coaxial cables. In addition, the matching circuit 360 can also be used to fine-tune the input impedance matching of the antenna structure 300 . Figure 3 The remaining features of the antenna structure 300 are the same as Figure 1The antenna structure 100 is similar, so both embodiments can achieve similar operating effects.

[0063] Figure 4 FIG is a schematic diagram showing a wearable device 400 according to an embodiment of the present invention. Figure 4 In one embodiment, the wearable device 400 is a pair of smart glasses with wireless communication capabilities and includes a nonconductive frame element 480, wherein the aforementioned antenna structure 300 (or 100) is disposed on the nonconductive frame element 480. For example, the aforementioned antenna structure 300 (or 100) may also extend substantially along the nonconductive frame element 480. In other embodiments, the wearable device 400 may further include an RF circuit, a filter, an amplifier, or (and) a processor, but is not limited thereto.

[0064] 24A544 2TWCN24A544 2TWCN_202411111036047340617_112415864.docx

[0065] The present invention proposes a novel antenna structure. Compared with conventional designs, the present invention has advantages such as small size, wide bandwidth, and the ability to be integrated with wearable devices. Therefore, it is very suitable for application in various mobile communication devices or the Internet of Things.

[0066] 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 1-4 The utility model may only include Figure 1-4 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.

[0067] In this specification and the scope of the patent application, ordinal numbers, such as "first", "second", "third", etc., have no sequential relationship with each other and are only used to mark and distinguish two different components with the same name.

[0068] 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 coupled to a feeding point, wherein the feeding radiation portion is substantially in a meandering shape; an extended radiation portion coupled to the feed radiation portion, wherein a width of the extended radiation portion is greater than a width of the feed radiation portion; a ground radiation portion coupled to a ground point, wherein the ground radiation portion is adjacent to the feed radiation portion; and A carrier component, wherein the feed radiation portion, the extended radiation portion, and the ground radiation portion are all disposed on the carrier component.

2. The antenna structure according to claim 1, wherein: Also includes: A transmission line is coupled to a signal source and disposed on the carrier component, wherein the transmission line is implemented by a coplanar waveguide.

3. The antenna structure according to claim 2, wherein: Also includes: A matching circuit is coupled to the transmission line and disposed on the carrier component, wherein the matching circuit provides the feeding point and the grounding point.

4. The antenna structure according to claim 1, wherein: The feeding radiation portion includes a first portion, a second portion, and a third portion. The second portion is coupled between the first portion and the third portion, and the third portion is substantially parallel to the first portion.

5. The antenna structure according to claim 4, wherein: A first coupling gap is formed between the ground radiation portion and the first portion of the feed radiation portion, and a width of the first coupling gap is between 1 mm and 1.2 mm.

6. The antenna structure according to claim 4, wherein: A second coupling gap is formed between the ground radiation portion and the third portion of the feed radiation portion, and a width of the second coupling gap is between 0.2 mm and 0.3 mm.

7. The antenna structure according to claim 1, wherein: The antenna structure covers a first frequency band, a second frequency band, and a third frequency band. The first frequency band is between 2400 MHz and 2500 MHz, the second frequency band is between 5150 MHz and 5850 MHz, and the third frequency band is between 5925 MHz and 7125 MHz.

8. The antenna structure according to claim 1, wherein: The length of the extended radiation portion is substantially equal to the length of the feeding radiation portion.

9. The antenna structure according to claim 7, wherein: The total length of the feed radiation portion and the extended radiation portion is substantially equal to 0.25 times the wavelength of the first frequency band.

10. The antenna structure according to claim 7, wherein: The length of the ground radiation portion is substantially equal to 0.25 times the wavelength of the second frequency band.

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