Antenna structure

Abstract

The utility model provides an antenna structure. The antenna structure comprises a grounding assembly, a feed-in radiation part, a first radiation part, a second radiation part, a third radiation part, a short-circuit radiation part and a carrier assembly. The grounding assembly comprises a protruding 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 portion is coupled to the first radiation portion, wherein the second radiation portion is a protruding portion adjacent to the grounding assembly. The first radiating portion and the second radiating portion may extend in substantially opposite directions. The third radiation part is coupled to the feed-in radiation part, wherein the third radiation part is adjacent to the first radiation part. The third radiation part is further coupled to the grounding assembly through the short-circuit radiation part. The grounding assembly, the feed-in radiation part, the first radiation part, the second radiation part, the third radiation part and the short-circuit radiation part are all 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 grounding component, including a protruding portion; a feed radiating portion, having a feeding point; a first radiating portion, coupled to the feed radiating portion; a second radiating portion, coupled to the first radiating portion, wherein the second radiating portion is adjacent to the protruding portion of the grounding component, and the first radiating portion and the second radiating portion extend in substantially opposite directions; a third radiating portion, coupled to the feed radiating portion, wherein the third radiating portion is adjacent to the first radiating portion; a short-circuit radiating portion, wherein the third radiating portion is further coupled to the grounding component via the short-circuit radiating portion; and a carrier component, wherein the grounding component, the feed radiating portion, the first radiating portion, the second radiating portion, the third radiating portion, and the short-circuit radiating portion are all disposed on the carrier component.

[0005] In some embodiments, the protruding portion of the grounding element is substantially rectangular.

[0006] In some embodiments, a combination of the feed radiation portion, the first radiation portion, and the second radiation portion substantially presents a T-shape.

[0007] In some embodiments, the width of the first radiating portion is greater than the width of the second radiating portion.

[0008] In some embodiments, a first coupling gap is formed between the protruding portion of the grounding component and the second radiating portion, and a width of the first coupling gap is between 0.5 mm and 1 mm.

[0009] In some embodiments, a second coupling gap is formed between the first radiating portion and the third radiating portion, and a width of the second coupling gap is between 0.75 mm and 1.5 mm.

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

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

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

[0013] In some embodiments, a length of the third radiating portion is substantially equal to 0.5 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 planar expansion diagram showing the 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 3A It is a three-dimensional diagram showing a point-of-sale information system according to one embodiment of the present invention.

[0018] Figure 3B It is a partial view showing a point-of-sale information system according to an embodiment of the present invention.

[0019] Reference numerals:

[0020] 100: Antenna structure

[0021] 110: Grounding component

[0022] 115: protruding part of the grounding component

[0023] 120: Feed radiation part

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

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

[0026] 130: First radiation part

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

[0028] 132: Second end of the first radiation portion

[0029] 140: Second radiation part

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

[0031] 142: second end of the second radiation portion

[0032] 150: The third radiation

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

[0034] 152: second end of the third radiation portion

[0035] 160: Short-circuit radiation part

[0036] 161: First end of the short-circuit radiation portion

[0037] 162: Second end of the short-circuit radiation portion

[0038] 170:Carrier component

[0039] 184: First opening slot area

[0040] 185: Second opening slot area

[0041] 300: Point of Sale Information System

[0042] FB1: First frequency band

[0043] FB2: Second frequency band

[0044] FP: Feed Point

[0045] GC1: First coupling gap

[0046] GC2: Second coupling gap

[0047] GP: Grounding point

[0048] L1, L2, L3, L4: Length

[0049] LC1: bending line

[0050] VSS: Ground potential

[0051] W1, W2, W3, W4: width DETAILED DESCRIPTION

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] Figure 1 This figure shows a planar expansion diagram of an antenna structure 100 according to one 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).

[0057] exist Figure 1 In the embodiment of the present invention, the antenna structure 100 includes: a ground element 110, a feeding radiation element 120, a first radiation element 130, a second radiation element 140, a third radiation element 150, a shorting radiation element 160, and a carrier element 170, wherein the ground element 110, the feeding radiation element 120, the first radiation element 130, the second radiation element 140, the third radiation element 150, and the shorting radiation element 160 can all be made of metal materials, such as copper, silver, aluminum, iron, or alloys thereof.

[0058] The grounding component 110 is coupled to a ground voltage VSS. In some embodiments, the ground potential VSS may be provided by a system ground plane (not shown). The grounding component 110 may include a protruding portion 115. For example, the protruding portion 115 of the grounding component 110 may be roughly rectangular or square, but is not limited thereto. In addition, a grounding point GP may be adjacent to the protruding portion 115 of the grounding component 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, 10 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).

[0059] The feed radiating portion 120 can be roughly L-shaped. Specifically, the feed radiating portion 120 has a first end 121 and a second end 122, wherein a feeding point FP can be approximately located at the center of the feed radiating portion 120. The feeding point FP can be further coupled to a positive electrode (positive electrode) of a signal source (not shown), while a negative electrode (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, which 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, wherein the positive electrode of the signal source can be coupled to the feeding point FP via the central conductor of the coaxial cable, and the negative electrode of the signal source can be coupled to the ground point GP via the conductive housing of the coaxial cable.

[0060] The first radiating portion 130 can be generally shaped like a wide straight strip. Specifically, the first radiating portion 130 has a first end 131 and a second end 132 . The first end 131 of the first radiating portion 130 is coupled to the first end 121 of the feed radiating portion 120 , while the second end 132 of the first radiating portion 130 is an open end.

[0061] The second radiating portion 140 can generally have a narrow straight shape, wherein the width W1 of the first radiating portion 130 can be greater than the width W2 of the second radiating portion 140. Specifically, the second radiating portion 140 has a first end 141 and a second end 142. The first end 141 of the second radiating portion 140 is coupled to the first end 131 of the first radiating portion 130, while the second end 142 of the second radiating portion 140 is open. For example, the second end 132 of the first radiating portion 130 and the second end 142 of the second radiating portion 140 can extend in generally opposite and away from each other. In some embodiments, the combination of the feed radiating portion 120, the first radiating portion 130, and the second radiating portion 140 can generally have a T-shape. In some embodiments, the second end 142 of the second radiating portion 140 is adjacent to the protruding portion 115 of the ground element 110, forming a first coupling gap GC1 between the protruding portion 115 of the ground element 110 and the second radiating portion 140.

[0062] The third radiating portion 150 can generally have a larger L-shape (compared to the feed radiating portion 120). Specifically, the third radiating portion 150 has a first end 151 and a second end 152. The first end 151 of the third radiating portion 150 is coupled to the second end 122 of the feed radiating portion 120, while the second end 152 of the third radiating portion 150 is open. In some embodiments, the second end 152 of the third radiating portion 150 is adjacent to the second end 132 of the first radiating portion 130, forming a second coupling gap GC2 between the first radiating portion 130 and the third radiating portion 150.

[0063] The short-circuited radiating portion 160 can be generally shaped like a shorter straight strip (compared to the first radiating portion 130 and the second radiating portion 140). Specifically, the short-circuited radiating portion 160 has a first end 161 and a second end 162. The first end 161 of the short-circuited radiating portion 160 is coupled to the ground element 110, while the second end 162 of the short-circuited radiating portion 160 is coupled to the first end 151 of the third radiating portion 150. In other words, the third radiating portion 150 can be further coupled to the ground element 110 via the short-circuited radiating portion 160.

[0064] In some embodiments, the grounding element 110, the feeding radiation portion 120, the second radiation portion 140, and the short-circuit radiation portion 160 may collectively define a first open slot region 184. For example, the first open slot region 184 may be substantially W-shaped, but is not limited thereto.

[0065] In some embodiments, the feed radiation portion 120, the first radiation portion 130, and the third radiation portion 150 may jointly define a second opening slot region 185. For example, the second opening slot region 185 may be substantially L-shaped, but is not limited thereto.

[0066] The grounding component 110, the feed radiation portion 120, the first radiation portion 130, the second radiation portion 140, the third radiation portion 150, and the short-circuit radiation portion 160 can all be arranged on the same surface of the carrier component 170, wherein the grounding component 110 can also extend outside 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 a 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, in other embodiments, the antenna structure 100 can also be changed to a three-dimensional antenna structure, which can be based on Figure 1 Correction is performed based on a bending line LC1.

[0067] 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, antenna structure 100 can cover a first frequency band (FB1) and a second frequency band (FB2). For example, first frequency band FB1 can be between 2400MHz and 2500MHz, while second frequency band FB2 can be between 5150MHz and 5850MHz. Therefore, antenna structure 100 can support at least WLAN (Wireless Local Area Network) 2.4GHz / 5GHz broadband operation.

[0068] In some embodiments, the operating principle of the antenna structure 100 can be described as follows. The first radiating element 130 can be excited by the feed radiating element 120 to generate the aforementioned first frequency band FB1. The second radiating element 140 and the third radiating element 150 can both be excited by the feed radiating element 120 to generate the aforementioned second frequency band FB2. According to actual measurement results, the unequal width design of the first radiating element 130 and the second radiating element 140 can be used to increase the operational bandwidth of the antenna structure 100. In addition, if the protrusion 115 is added to the ground element 110, it can be used to fine-tune the impedance matching of the second frequency band FB2 of the antenna structure 100.

[0069] In some embodiments, the component dimensions of the antenna structure 100 may be as follows. The length L1 of the first radiating portion 130 may be approximately equal to 0.25 times the wavelength (λ / 4) of the first frequency band FB1 of the antenna structure 100. The width W1 of the first radiating portion 130 may be between 1.5 mm and 2 mm. The length L2 of the second 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 width W2 of the second radiating portion 140 may be between 1 mm and 1.5 mm. The length L3 of the third radiating portion 150 may be approximately equal to 0.5 times the wavelength (λ / 2) of the second frequency band FB2 of the antenna structure 100. The width W3 of the third radiating portion 150 may be between 2 mm and 2.5 mm. In the ground component 110, the length L4 of the protruding portion 115 may be between 3 mm and 5 mm, and the width W4 of the protruding portion 115 may be between 1.5 mm and 2 mm. The width of the first coupling gap GC1 may be between 0.5 mm and 1 mm. The width of the second coupling gap GC2 may be between 0.75 mm and 1.5 mm. The above component size ranges are obtained based on multiple experimental results, which help optimize the operating bandwidth and impedance matching of the antenna structure 100.

[0070] Figure 3A It is a three-dimensional diagram showing a point of sale (POS) system 300 according to an embodiment of the present invention. Figure 3B3A and 3B illustrate a partial view of a point-of-sale information system 300 according to an embodiment of the present invention. In the embodiment of Figures 3A and 3B, the point-of-sale information system 300 includes the aforementioned antenna structure 100, thereby enabling wireless communication. In some embodiments, the point-of-sale information system 300 further includes, but is not limited to, an RF circuit, a filter, an amplifier, a processor, and / or a housing (not shown). For example, the antenna structure 100 may be positioned at the top of the point-of-sale information system 300. Even if the point-of-sale information system 300 includes additional metal components, these components will not significantly negatively impact the communication quality of the antenna structure 100. Figure 3A 、 3B The remaining features of the point-of-sale information system 300 are the same as Figure 1 The antenna structure 100 is similar, so both embodiments can achieve similar operating effects.

[0071] The present invention proposes a novel antenna structure. Compared with conventional designs, the present invention has advantages such as small size, wide bandwidth, and low environmental interference, making it very suitable for application in various mobile communication devices or the Internet of Things.

[0072] 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 -3 shown in the state. The utility model may only include Figure 1 -3. In other words, not all features shown in the figure need to be implemented in the antenna structure of the present invention at the same time.

[0073] 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.

[0074] 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 grounding assembly comprising a protruding portion; A feeding radiation portion having a feeding point; a first radiation portion coupled to the feed radiation portion; a second radiating portion coupled to the first radiating portion, wherein the second radiating portion is adjacent to the protruding portion of the grounding element, and the first radiating portion and the second radiating portion extend substantially in opposite directions; a third radiating portion coupled to the feed radiating portion, wherein the third radiating portion is adjacent to the first radiating portion; a short-circuit radiation portion, wherein the third radiation portion is further coupled to the ground component via the short-circuit radiation portion; and A carrier component, wherein the ground component, the feed radiation portion, the first radiation portion, the second radiation portion, the third radiation portion, and the short-circuit radiation portion are all disposed on the carrier component.

2. The antenna structure according to claim 1, wherein: The protruding portion of the grounding component is substantially rectangular.

3. The antenna structure according to claim 1, wherein: The combination of the feed radiation portion, the first radiation portion, and the second radiation portion substantially presents a T-shape.

4. The antenna structure according to claim 1, wherein: The width of the first radiation portion is greater than the width of the second radiation portion.

5. The antenna structure according to claim 1, wherein: A first coupling gap is formed between the protruding portion of the grounding component and the second radiating portion, and a width of the first coupling gap is between 0.5 mm and 1 mm.

6. The antenna structure according to claim 1, wherein: A second coupling gap is formed between the first radiating portion and the third radiating portion, and a width of the second coupling gap is between 0.75 mm and 1.5 mm.

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

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

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

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

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