Antenna structure

Abstract

The utility model provides an antenna structure. The antenna structure comprises a grounding radiation part, a first radiation part, a second radiation part, a third radiation part, a fourth radiation part and a carrier assembly. The grounding radiation part is coupled to a grounding point. The first radiation part is coupled to a feed-in point. The second radiation part is coupled to the feed-in point, wherein a first included angle can be formed between the first radiation part and the second radiation part. The third radiation part is coupled to the first radiation part, wherein a second included angle can be formed between the first radiation part and the third radiation part. The fourth radiation part is coupled to the second radiation part, wherein a third included angle can be formed between the second radiation part and the fourth radiation part. The grounding radiation part, the first radiation part, the second radiation part, the third radiation part and the fourth radiation part are 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 proposes an antenna structure, including: a grounded radiating portion, coupled to a ground point; a first radiating portion, coupled to a feeding point; a second radiating portion, coupled to the feeding point, wherein a first angle is formed between the first radiating portion and the second radiating portion; a third radiating portion, coupled to the first radiating portion, wherein a second angle is formed between the first radiating portion and the third radiating portion; a fourth radiating portion, coupled to the second radiating portion, wherein a third angle is formed between the second radiating portion and the fourth radiating portion; and a carrier assembly, wherein the grounded radiating portion, the first radiating portion, the second radiating portion, the third radiating portion, and the fourth radiating portion are all arranged on the carrier assembly.

[0005] In some embodiments, the ground radiation portion is substantially in a smooth shape with unequal width.

[0006] In some embodiments, the first angle is between 80 degrees and 100 degrees.

[0007] In some embodiments, the second angle is between 110 degrees and 160 degrees.

[0008] In some embodiments, the third angle is between 110 degrees and 160 degrees.

[0009] 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.

[0010] In some embodiments, the length of the ground radiating portion is substantially equal to 0.5 times the wavelength of the first frequency band.

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

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

[0013] In some embodiments, a total length of the second radiating portion and the fourth 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 voltage standing wave ratio of the antenna structure according to an embodiment of the present invention.

[0017] Figure 3 FIG2 is a schematic diagram showing a wearable device according to an embodiment of the present invention.

[0018] Reference numerals:

[0019] 100: Antenna structure

[0020] 110: Ground radiation part

[0021] 111: First end of the grounded radiation portion

[0022] 112: Second end of the grounded radiation portion

[0023] 120: First radiation part

[0024] 121: first end of the first radiation portion

[0025] 122: second end of the first radiation portion

[0026] 130: Second radiation part

[0027] 131: first end of the second radiation portion

[0028] 132: second end of the second radiation portion

[0029] 140: The third radiation

[0030] 141: first end of the third radiation portion

[0031] 142: Second end of the third radiation portion

[0032] 150: The fourth radiation

[0033] 151: first end of the fourth radiation portion

[0034] 152: Second end of the fourth radiation portion

[0035] 170:Carrier component

[0036] 300: Wearable device

[0037] 380: Non-conductive frame assembly

[0038] D1: First distance

[0039] D2: Second distance

[0040] D3: The third distance

[0041] FB1: First frequency band

[0042] FB2: Second frequency band

[0043] FB3: Third frequency band

[0044] FP: Feed Point

[0045] GP: Grounding point

[0046] L1, L2, L3, L4, L5: Length

[0047] W1, W2: width

[0048] θ1: first angle

[0049] θ2: second angle

[0050] θ3: the third angle DETAILED DESCRIPTION

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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).

[0056] exist Figure 1 In the embodiment, the antenna structure 100 includes: a grounding radiation element 110, a first radiation element 120, a second radiation element 130, a third radiation element 140, a fourth radiation element 150, and a carrier element 170, wherein the grounding radiation element 110, the first radiation element 120, the second radiation element 130, the third radiation element 140, and the fourth radiation element 150 can all be made of metal materials, such as copper, silver, aluminum, iron, or alloys thereof.

[0057] The ground radiating portion 110 can generally have a smooth shape with varying widths. Specifically, the ground radiating portion 110 has a first end 111 and a second end 112. The first end 111 of the ground radiating portion 110 is coupled to a grounding point (GP), while the second end 112 of the ground radiating portion 110 can be an open end. Within the ground radiating portion 110, the width W1 of the first end 111 is greater than the width W2 of the second end 112. For example, the width W1 of the first end 111 can be at least twice the width W2 of the second end 112, but this is not limited thereto.

[0058] The first radiating portion 120 can be generally shaped like a short straight strip. 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 a feeding point FP. The feeding 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 a 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. In some embodiments, the antenna structure 100 further includes a coaxial cable (not shown) having a central conductor and a conductive housing. The positive electrode of the signal source can be coupled to the feeding point FP via the central conductor of the coaxial cable, while the negative electrode of the signal source can be coupled to the ground point GP via the conductive housing of the coaxial cable. In some embodiments, the coaxial cable may also substantially extend along the ground radiation portion 110 , but is not limited thereto.

[0059] The second radiating portion 130 can be roughly in the shape of another shorter straight bar. In detail, the second radiating portion 130 has a first end 131 and a second end 132, wherein the first end 131 of the second radiating portion 130 is coupled to the feed point FP. In some embodiments, a first angle (Angle) θ1 can be formed between the first radiating portion 120 and the second radiating portion 130. For example, the first angle θ1 can be an acute angle, a right angle, or an obtuse angle. In some embodiments, both the first radiating portion 120 and the second radiating portion 130 are arranged adjacent to the ground radiating portion 110. It should be noted that the term "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 (for example, 5 mm or less), but generally does not include a situation where the corresponding two components are in direct contact with each other (that is, the aforementioned distance is shortened to 0).

[0060] The third radiating portion 140 can be generally shaped like a long straight strip (compared to the first radiating portion 120). Specifically, the third radiating portion 140 has a first end 141 and a second end 142. The first end 141 of the third radiating portion 140 is coupled to the second end 122 of the first radiating portion 120, while the second end 142 of the third radiating portion 140 is open. In some embodiments, a second angle θ2 can be formed between the first radiating portion 120 and the third radiating portion 140. For example, the second angle θ2 can be an obtuse angle, but is not limited thereto.

[0061] The fourth radiating portion 150 can generally have a longer straight shape (compared to the second radiating portion 130). 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 132 of the second radiating portion 130, while the second end 152 of the fourth radiating portion 150 is open. In some embodiments, a third angle θ3 can be formed between the second radiating portion 130 and the fourth radiating portion 150. For example, the third angle θ3 can be another obtuse angle, which can be approximately equal to the aforementioned second angle θ2, but is not limited thereto. In some embodiments, the second end 142 of the third radiating portion 140 and the second end 152 of the fourth radiating portion 150 can extend in substantially the same direction.

[0062] The ground radiating portion 110, the first radiating portion 120, the second radiating portion 130, the third radiating portion 140, and the fourth radiating portion 150 can all be disposed on the same surface of the carrier component 170. The present invention does not specifically limit the shape and type of the carrier component 170. 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).

[0063] Figure 2 The figure shows 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), 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.

[0064] In some embodiments, the operating principle of the antenna structure 100 can be described as follows. The ground radiating element 110 can generate the aforementioned first frequency band FB1. The first radiating element 120, the second radiating element 130, the third radiating element 140, and the fourth radiating element 150 can generate the aforementioned second frequency band FB2. The first radiating element 120 and the second radiating element 130 can generate the aforementioned third frequency band FB3. According to actual measurement results, the unequal width design of the ground radiating element 110 can be used to increase the bandwidth of the aforementioned first frequency band FB1. A first distance D1 is defined between the third radiating element 140 and the fourth radiating element 150. This first distance D1 can be used to fine-tune the impedance matching of the aforementioned second frequency band FB2. In addition, a second distance D2 is defined between the ground radiating element 110 and the third radiating element 140, and a third distance D3 is defined between the ground radiating element 110 and the fourth radiating element 150. Both the second distance D2 and the third distance D3 can be used to fine-tune the impedance matching of the aforementioned third frequency band FB3.

[0065] In some embodiments, the component dimensions of the antenna structure 100 may be as follows. The length L1 of the ground radiating portion 110 may be approximately equal to 0.5 times the wavelength (λ / 2) of the first frequency band FB1 of the antenna structure 100. The width W1 of the first end 111 of the ground radiating portion 110 may be between 7 mm and 9 mm, while the width W2 of the second end 112 of the ground radiating portion 110 may be between 2 mm and 4 mm. The length L2 of the first radiating portion 120 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 L3 of 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 L4 of the first radiating portion 120 and the third radiating portion 140 may be approximately equal to 0.25 times the wavelength (λ / 4) of the second frequency band FB2 of the antenna structure 100. The total length L5 of the second radiating portion 130 and the fourth radiating portion 150 may be approximately equal to 0.25 wavelengths (λ / 4) of the second frequency band FB2 of the antenna structure 100. The first angle θ1 may be between 80 degrees and 100 degrees. The second angle θ2 may be between 110 degrees and 160 degrees. The third angle θ3 may be between 110 degrees and 160 degrees. The first distance D1 may be between 6 mm and 8 mm. The second distance D2 may be between 2 mm and 4 mm. The third distance D3 may be between 2 mm and 4 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.

[0066] Figure 3 FIG is a schematic diagram showing a wearable device 300 according to an embodiment of the present invention. Figure 3In one embodiment, the wearable device 300 is a pair of smart glasses with wireless communication capabilities and includes a nonconductive frame element 380, wherein the aforementioned antenna structure 100 is disposed on the nonconductive frame element 380. For example, the aforementioned antenna structure 100 may be located at any end of the nonconductive frame element 380. In other embodiments, the wearable device 300 may further include an RF circuit, a filter, an amplifier, or (and) a processor, but is not limited thereto.

[0067] 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.

[0068] It is worth noting that the above-mentioned component size, component shape, and frequency range are not limiting conditions 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 the state shown in Figures 1-3. The present invention may only include Figure 1-3 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.

[0069] 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.

[0070] 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 ground radiation portion coupled to a ground point; a first radiating portion coupled to a feeding point; a second radiating portion coupled to the feed point, wherein a first angle is formed between the first radiating portion and the second radiating portion; a third radiating portion coupled to the first radiating portion, wherein a second included angle is formed between the first radiating portion and the third radiating portion; a fourth radiating portion coupled to the second radiating portion, wherein a third included angle is formed between the second radiating portion and the fourth radiating portion; and A carrier component, wherein the ground radiation portion, the first radiation portion, the second radiation portion, the third radiation portion, and the fourth radiation portion are all disposed on the carrier component.

2. The antenna structure according to claim 1, wherein: The ground radiation portion generally presents a smooth shape with unequal width.

3. The antenna structure according to claim 1, wherein: The first angle is between 80 degrees and 100 degrees.

4. The antenna structure according to claim 1, wherein: The second angle is between 110 degrees and 160 degrees.

5. The antenna structure according to claim 1, wherein: The third angle is between 110 degrees and 160 degrees.

6. 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.

7. The antenna structure according to claim 6, wherein: The length of the ground radiation portion is substantially equal to 0.5 times the wavelength of the first frequency band.

8. The antenna structure according to claim 6, wherein: A length of each of the first radiation portion and the second radiation portion is substantially equal to 0.25 times the wavelength of the third frequency band.

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

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

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