Antenna system

Abstract

The utility model provides an antenna system, include: a signal source, a board to board connector, a first antenna component to and a second antenna component. Board to board connector has a common input, a first output and a second output, wherein the common input of board to board connector is coupled to signal source. The first antenna component has a first feed point, wherein the first feed point is coupled to the first output of board to board connector. The second antenna component has a second feed point, wherein the second feed point is coupled to the second output of board to board connector.

Description

Technical Field

[0001] This utility model relates to an antenna system, and more particularly to an antenna system having a wideband. Background Technology

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

[0003] Antennas are indispensable components in wireless communication. If the operating bandwidth of an antenna used for receiving or transmitting signals is too narrow, it can easily lead to a degradation in the communication quality of mobile devices. Therefore, designing a small-size, wide-bandwidth antenna system is an important task for designers. Utility Model Content

[0004] In a preferred embodiment, the present invention provides an antenna system comprising: a signal source; a board-to-board connector having a common input terminal, a first output terminal, and a second output terminal, wherein the common input terminal of the board-to-board connector is coupled to the signal source; a first antenna assembly having a first feed point, wherein the first feed point is coupled to the first output terminal of the board-to-board connector; and a second antenna assembly having a second feed point, wherein the second feed point is coupled to the second output terminal of the board-to-board connector.

[0005] In some embodiments, the antenna system covers a first frequency band, a second frequency band, and a third frequency band, wherein the first frequency band is between 2400MHz and 2500MHz, the second frequency band is between 5150MHz and 5850MHz, and the third frequency band is between 5925MHz and 7125MHz.

[0006] In some embodiments, the first antenna assembly includes: a feed radiating portion coupled to the first 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; and a ground radiating portion coupled to a first ground point, wherein the ground radiating portion is adjacent to the feed radiating portion.

[0007] In some embodiments, the feed radiation portion includes a first portion, a second portion, and a third portion, wherein 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, the total length of the feed radiator and the extended radiator is approximately equal to 0.25 times the wavelength of the first frequency band.

[0009] In some embodiments, the length of the grounding radiating portion is approximately equal to 0.25 times the wavelength of the second frequency band.

[0010] In some embodiments, the second antenna assembly includes: a first radiating portion coupled to the second feed point, wherein the first radiating portion is generally shaped as a bend; and a second radiating portion coupled to a second ground point, wherein the second radiating portion is adjacent to the first radiating portion.

[0011] In some embodiments, the first radiating portion includes a first arc-shaped segment, a first straight strip segment, and an inverted U-shaped segment, and the second radiating portion includes a second arc-shaped segment and a second straight strip segment, the second arc-shaped segment extending along the first arc-shaped segment, and the second straight strip segment being substantially parallel to the first straight strip segment.

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

[0013] In some embodiments, the length of the second radiating portion is approximately equal to 0.25 times the wavelength of the second frequency band. Attached Figure Description

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

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

[0016] Figure 2 This is a perspective view showing a first antenna assembly according to an embodiment of the present invention.

[0017] Figure 3 This is a voltage standing wave ratio (VSWR) diagram of the first antenna assembly according to an embodiment of the present invention.

[0018] Figure 4 This is a top view showing the second antenna assembly according to an embodiment of the present invention.

[0019] Figure 5 This is a voltage standing wave ratio (VSWR) diagram of the second antenna assembly according to an embodiment of the present invention.

[0020] Figure 6 This is a perspective view showing a wearable device according to an embodiment of the present invention.

[0021] Figure label:

[0022] 100: Antenna System

[0023] 110: Signal Source

[0024] 120: Board-to-board connector

[0025] 121: Common Input Terminal

[0026] 122: First output terminal

[0027] 123: Second output terminal

[0028] 200: First antenna assembly

[0029] 210: Feed radiator

[0030] 211: First end of the feed radiator

[0031] 212: The second end of the feed radiator

[0032] 214: The first part of the feed radiator

[0033] 215: The second part of the feed radiator

[0034] 216: The third part of the feed radiator

[0035] 220: Extended Radiation Section

[0036] 221: The first end of the extended radiating section

[0037] 222: The second end of the extended radiating section

[0038] 230: Grounding Radiation Section

[0039] 231: The first end of the grounding radiation section

[0040] 232: The second end of the grounding radiation section

[0041] 270: First carrier component

[0042] 400: Second Line Component

[0043] 410: First Radiation Section

[0044] 411: The first end of the first radiating section

[0045] 412: The second end of the first radiating section

[0046] 414: First arc-shaped section

[0047] 415: First straight strip segment

[0048] 416: Inverted U-shaped section

[0049] 418: Narrow gap

[0050] 419: T-shaped slot area

[0051] 420: Second Radiation Section

[0052] 421: The first end of the second radiating section

[0053] 422: The second end of the second radiating section

[0054] 424: Second arc-shaped section

[0055] 425: Second straight strip section

[0056] 470: Second carrier component

[0057] 600: Wearable devices

[0058] 680: Framework Components

[0059] 690: Temple assembly

[0060] DS: Specific distance

[0061] FB1: First Band

[0062] FB2: Second Band

[0063] FB3: Third Band

[0064] FP1: First feed point

[0065] FP2: Second feed point

[0066] GC1: First coupling gap

[0067] GC2: Second coupling gap

[0068] GC3: Third coupling gap

[0069] GC4: Fourth Coupling Gap

[0070] GP1: First grounding point

[0071] GP2: Second grounding point

[0072] L1, L2, L3, L4, L5: Length

[0073] W1, W2, W3, W4, W5: Width Detailed Implementation

[0074] To make the objectives, features and advantages of this utility model more apparent and understandable, specific embodiments of this utility model are described below in conjunction with the accompanying drawings for detailed explanation.

[0075] Certain terms are used in this specification and the claims to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and the claims do not distinguish components by differences in name, but by differences in function. The terms "comprising" and "including" used throughout this specification and the claims are open-ended and should be interpreted as "including but not limited to". The term "generally" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and achieve the basic technical effect within a certain margin of error. Furthermore, the term "coupled" in this specification includes any direct and indirect electrical connection means. Therefore, if a first device is described as coupled to a second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device via other devices or connection means.

[0076] The following disclosure provides numerous different embodiments or examples to implement various features of this invention. The following disclosure describes specific examples of the various components and their arrangements for simplification. Of course, these specific examples are not intended to be limiting. For example, if this specification describes a first feature formed on or above a second feature, it indicates that it may include embodiments where the first and second features are in direct contact, or embodiments where an additional feature is formed between the first and second features, so that the first and second features may not be in direct contact. Furthermore, the same reference numerals and / or designations may be used repeatedly in different examples of the following specification. These repetitions are for simplification and clarity and are not intended to limit any specific relationship between the different embodiments and / or structures discussed.

[0077] Furthermore, the use of spatially related terms, such as "below," "below," "lower," "above," "higher," and similar terms, is intended to facilitate the description of the relationship between one component or feature in the icon and another component(s). In addition to the orientations shown in the accompanying drawings, these spatially related terms are intended to encompass different orientations of the device in use or operation. The device may be turned to different orientations (rotated 90 degrees or other orientations), and the spatially related terms used herein can be interpreted in the same way.

[0078] Figure 1 This is a schematic diagram showing an antenna system 100 according to an embodiment of the present invention. The antenna system 100 can be used in a wearable device, such as smart glasses. Alternatively, the antenna system 100 can be used in a mobile device, such as a smartphone, tablet computer, notebook computer, wireless access point, router, or any device with communication capabilities.

[0079] exist Figure 1 In this embodiment, the antenna system 100 includes at least: a signal source 110, a board-to-board connector (or simply "B2B connector") 120, a first antenna element 200, and a second antenna element 400. The signal source 110 may be a radio frequency (RF) module. The types of the first antenna element 200 and the second antenna element 400 are not particularly limited in this invention. For example, either the first antenna element 200 or the second antenna element 400 may be a monopole antenna, a dipole antenna, a loop antenna, a helical antenna, a planar inverted F antenna (PIFA), or a chip antenna.

[0080] In detail, the board-to-board connector 120 has a common input terminal 121, a first output terminal 122, and a second output terminal 123, wherein the common input terminal 121 of the board-to-board connector 120 is coupled to the signal source 110. The first antenna assembly 200 has a first feeding point FP1, wherein the first feeding point FP1 is coupled to the first output terminal 122 of the board-to-board connector 120. The second antenna assembly 400 has a second feeding point FP2, wherein the second feeding point FP2 is coupled to the second output terminal 123 of the board-to-board connector 120. Therefore, the feeding energy from the signal source 110 can be distributed and transmitted to the first antenna assembly 200 and the second antenna assembly 400.

[0081] It is important to note that the antenna system 100 proposed in this invention uses a board-to-board connector 120 instead of a traditional coaxial cable. With this design, the first antenna assembly 200 and the second antenna assembly 400 can be simultaneously excited by a single signal source 110, which effectively reduces the manufacturing cost of the antenna system 100 while maintaining good communication quality. In some embodiments, the board-to-board connector 120 may also have a built-in switching component (not shown) that can couple the common input terminal 121 to either the first output terminal 122 or the second output terminal 123.

[0082] The following embodiments will describe various configurations and detailed structural features of the antenna system 100. It must be understood that the accompanying drawings and descriptions are merely illustrative and not intended to limit the scope of this invention.

[0083] Figure 2 This is a perspective view showing a first antenna assembly 200 according to an embodiment of the present invention. Figure 2 In one embodiment, the first antenna assembly 200 includes a feeding radiation element 210, an extension radiation element 220, and a grounding radiation element 230, wherein the feeding radiation element 210, the extension radiation element 220, and the grounding radiation element 230 can all be made of metal, such as copper, silver, aluminum, iron, or their alloys.

[0084] The feed radiator 210 may have a generally meandering shape, such as a Z-shape or an N-shape, but is not limited thereto. Specifically, the feed radiator 210 has a first end 211 and a second end 212, with the first end 211 coupled to a first feed point FP1. In some embodiments, the feed radiator 210 includes a first portion 214 and a second portion 215 adjacent to the first end 211, and a third portion 216 adjacent to the second end 212, wherein the second portion 215 is coupled between the first portion 214 and the third portion 216. In the feed radiator 210, the second portion 215 may be generally perpendicular to both the first portion 214 and the third portion 216, while the third portion 216 may be generally parallel to the first portion 214. It should be noted that the terms "adjacent" or "adjacent" in this specification may refer to a distance between two corresponding components that is less than a predetermined distance (e.g., 5 mm or less), or may include a situation where the two corresponding components are in direct contact with each other (i.e., the aforementioned distance is shortened to 0).

[0085] The extended radiating portion 220 may generally be a wide, straight strip. Specifically, the extended radiating portion 220 has a first end 221 and a second end 222, wherein the first end 221 of the extended radiating portion 220 is coupled to the second end 212 of the feed radiating portion 210, and the second end 222 of the extended radiating portion 220 is an open end. In some embodiments, the length L2 of the extended radiating portion 220 is approximately equal to the length L1 of the feed radiating portion 210. In some embodiments, the width W2 of the extended radiating portion 220 is greater than the width W1 of the feed radiating portion 210.

[0086] The grounding radiating portion 230 can generally be a narrower, straight strip (compared to the extended radiating portion 220). Specifically, the grounding radiating portion 230 has a first end 231 and a second end 232, wherein the first end 231 is coupled to a first grounding point GP1, and the second end 232 is an open-circuit end. For example, the second ends 222 of the extended radiating portion 220 and 232 of the grounding radiating portion 230 can both extend in approximately the same direction. In some embodiments, the width W2 of the extended radiating portion 220 is also greater than the width W3 of the grounding radiating portion 230. In some embodiments, the grounding radiating portion 230 is adjacent to the feed radiating portion 210, wherein a first coupling gap GC1 may be formed between the grounding radiating portion 230 and the first portion 214 of the feed radiating portion 210, and a second coupling gap GC2 may be formed between the grounding radiating portion 230 and the third portion 216 of the feed radiating portion 210.

[0087] In some embodiments, the first antenna assembly 200 further includes a first carrier element 270, wherein the feed radiating portion 210, the extended radiating portion 220, and the ground radiating portion 230 can all be disposed on the same surface of the first carrier element 270. The shape and type of the first carrier element 270 are not particularly limited in this invention. For example, the first carrier element 270 may be an FR4 (Flame Retardant 4) substrate, a printed circuit board (PCB), or a flexible printed circuit (FPC). In some embodiments, the first antenna assembly 200 may be a planar antenna structure. In other embodiments, the first antenna assembly 200 may also be a three-dimensional antenna structure.

[0088] Figure 3 This is a voltage standing wave ratio (VSWR) graph showing the first antenna assembly 200 according to an embodiment of the present invention, where the horizontal axis represents the operating frequency (MHz) and the vertical axis represents the voltage standing wave ratio. Figure 3 Based on the measurement results, the first antenna assembly 200 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 first antenna assembly 200 will at least support broadband operation of Wi-Fi 7.

[0089] In some embodiments, the first antenna assembly 200 operates as follows. The feed radiator 210 and the extended radiator 220 can generate the aforementioned first frequency band FB1. The ground radiator 230 can generate the aforementioned second frequency band FB2. Furthermore, a coupling effect can be induced between the ground radiator 230 and each of the feed radiator 210 and the extended radiator 220, thereby generating the aforementioned third frequency band FB3. Based on actual measurements, the unequal width design of the feed radiator 210 and the extended radiator 220 can also be used to increase the bandwidth of the aforementioned first frequency band FB1.

[0090] In some embodiments, the component dimensions of the first antenna assembly 200 may be as described below. The length L1 of the feed radiator 210 may be approximately equal to 0.125 times the wavelength (λ / 8) of the first frequency band FB1 of the first antenna assembly 200. The width W1 of the feed radiator 210 may be between 0.5 mm and 1 mm. The length L2 of the extended radiator 220 may be approximately equal to 0.125 times the wavelength (λ / 8) of the first frequency band FB1 of the first antenna assembly 200. The width W2 of the extended radiator 220 may be between 2.5 mm and 3 mm. The total length (L1+L2) of the feed radiator 210 and the extended radiator 220 may be approximately equal to 0.25 times the wavelength (λ / 4) of the first frequency band FB1 of the first antenna assembly 200. The length L3 of the ground radiator 230 may be approximately equal to 0.25 times the wavelength (λ / 4) of the second frequency band FB2 of the first antenna assembly 200. The width W3 of the ground radiator 230 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 derived from multiple experimental results and help optimize the operational bandwidth and impedance matching of the first antenna component 200.

[0091] Figure 4 This is a top view showing a second antenna assembly 400 according to an embodiment of the present invention. Figure 4 In some embodiments, the second antenna assembly 400 includes a first radiating portion 410 and a second radiating portion 420, wherein both the first radiating portion 410 and the second radiating portion 420 can be made of metal. In some embodiments, the second antenna assembly 400 further includes a second carrier assembly 470, wherein the first radiating portion 410 and the second radiating portion 420 can both be disposed on the same surface of the second carrier assembly 470. For example, the second carrier assembly 470 can also be integrated with the aforementioned first carrier assembly 270, and it can be a one-piece design. In some embodiments, the second antenna assembly 400 can be another planar antenna structure. In other embodiments, the second antenna assembly 400 can also be changed to another three-dimensional antenna structure.

[0092] The first radiating portion 410 may generally have a bent shape. Specifically, the first radiating portion 410 has a first end 411 and a second end 412, wherein the first end 411 of the first radiating portion 410 is coupled to the second feed point FP2, and the second end 412 of the first radiating portion 410 is an open-circuit end. In some embodiments, the first radiating portion 410 includes a first arc segment 414 adjacent to the first end 411, a first straight segment 415, and an inverted U-shaped segment 416 adjacent to the second end 412, wherein the first straight segment 415 is coupled between the first arc segment 414 and the inverted U-shaped segment 416. For example, the first arc segment 414 may generally have a small quarter-circle shape. Additionally, the inverted U-shaped segment 416 may have an elongated notch 418.

[0093] The second radiating portion 420 may have a generally smooth shape and is adjacent to the first radiating portion 410. In some embodiments, the first radiating portion 410 and the second radiating portion 420 may together surround a T-shaped slot region 419. Specifically, the second radiating portion 420 has a first end 421 and a second end 422, wherein the first end 421 of the second radiating portion 420 is coupled to a second ground point GP2, and the second end 422 of the second radiating portion 420 is an open-circuit end. For example, due to the presence of the inverted U-shaped section 416, the second ends 412 of the first radiating portion 410 and the second ends 422 of the second radiating portion 420 may extend in opposite directions and be close to each other. The second ground point GP2 may be different from the aforementioned first ground point GP1, and both may be coupled to a ground potential of the antenna system 100. In some embodiments, the second radiating portion 420 includes a second arcuate section 424 and a second straight section 425 coupled to each other. For example, the second arcuate segment 424 may generally be a large quarter-circle arc. The first arcuate segment 414 and the second arcuate segment 424 may share the same center, and a second radius of curvature of the second arcuate segment 424 may be larger than a first radius of curvature of the first arcuate segment 414. The second arcuate segment 424 may extend along the first arcuate segment 414, wherein a third coupling gap GC3 may be formed between the first arcuate segment 414 and the second arcuate segment 424. In addition, the second straight segment 425 may be generally parallel to the first straight segment 415, wherein a fourth coupling gap GC4 may be formed between the first straight segment 415 and the second straight segment 425. In some embodiments, a specific distance DS may be defined between the second end 412 of the first radiating portion 410 and the second end 422 of the second radiating portion 420 (or between the inverted U-shaped segment 416 and the second straight segment 425). In some embodiments, the third coupling gap GC3, the fourth coupling gap GC4, and the elongated notch 418 may all have the same width, wherein the third coupling gap GC3 and the fourth coupling gap GC4 may also be connected to each other.

[0094] Figure 5 This is a voltage standing wave ratio (VSWR) graph showing the second antenna assembly 400 according to an embodiment of the present invention, where the horizontal axis represents the operating frequency (MHz) and the vertical axis represents the VSWR. Figure 5 Based on the measurement results, the second antenna component 400 can also cover the first frequency band FB1, the second frequency band FB2, and the third frequency band FB3 as mentioned above. Therefore, the second antenna component 400 can also support at least Wi-Fi 7 broadband operation.

[0095] In some embodiments, the operation of the second antenna assembly 400 may be as follows: A first radiator 410 can be excited to generate the aforementioned first frequency band FB1. A second radiator 420 can be excited to generate the aforementioned second frequency band FB2. Additionally, the second radiator 420 may also be coupled and excited by the first radiator 410 to generate the aforementioned third frequency band FB3. Based on actual measurement results, the design of a specific distance DS can reduce the mutual interference between the first radiator 410 and the second radiator 420.

[0096] In some embodiments, the component dimensions of the second antenna assembly 400 may be as described below. The length L4 of the first radiating portion 410 may be approximately equal to 0.25 times the wavelength (λ / 4) of the first frequency band FB1 of the second antenna assembly 400. The width W4 of the first radiating portion 410 may be between 1 mm and 1.5 mm. For example, the length of the first straight strip segment 415 may be greater than the length of the inverted U-shaped segment 416, and the length of the inverted U-shaped segment 416 may be greater than the length of the first arc segment 414. The length L5 of the second radiating portion 420 may be approximately equal to 0.25 times the wavelength (λ / 4) of the second frequency band FB2 of the second antenna assembly 400. The width W5 of the second radiating portion 420 may be between 1 mm and 1.5 mm. For example, the length of the second straight strip segment 425 may be at least 1.5 times the length of the second arc segment 424. The width of the third coupling gap GC3 may be between 0.2 mm and 0.4 mm. The width of the fourth coupling gap GC4 can be between 0.2 mm and 0.4 mm. The width of the elongated notch 418 can be between 0.2 mm and 0.4 mm. The specific distance DS can be between 5 mm and 8 mm, for example, approximately 6 mm or 7 mm. The above component size range is derived from the results of multiple experiments and helps to optimize the operating bandwidth and impedance matching of the second antenna component 400.

[0097] Please refer to this again. Figure 1 In some embodiments, the antenna system 100 further includes a first matching circuit and a second matching circuit (not shown), wherein the first matching circuit is coupled between a first output terminal 122 of the board-to-board connector 120 and a first feed point FP1 to fine-tune the feed impedance of the first antenna assembly 200, and the second matching circuit is coupled between a second output terminal 123 of the board-to-board connector 120 and a second feed point FP2 to fine-tune the feed impedance of the second antenna assembly 400. For example, each of the first and second matching circuits may be implemented by a π-type circuit, which may include one or more inductors and / or one or more capacitors.

[0098] Figure 6This is a perspective view showing a wearable device 600 according to an embodiment of the present invention. Figure 6 In one embodiment, the wearable device 600 is a smart pair of glasses with wireless communication capabilities and includes a frame element 680 and a temple element 690, both of which can be made of non-conductive materials. The aforementioned antenna system 100 is integrated with this wearable device 600. For example, the aforementioned first antenna element 200 may be embedded in the frame element 680, and the aforementioned second antenna element 400 may be embedded in the temple element 690, but it is not limited to these. It must be understood that, although not shown in… Figure 6 However, the wearable device 600 may further include a radio frequency circuit, a filter, an amplifier, or a processor.

[0099] This invention proposes a novel antenna system. Compared with traditional designs, this invention has advantages such as small size, wide bandwidth, low manufacturing cost, and integration with wearable devices, making it well-suited for various mobile communication devices or the Internet of Things.

[0100] It is worth noting that the component dimensions, shapes, and frequency ranges described above are not limiting conditions of this invention. Antenna designers can adjust these multiple settings according to different needs. The antenna system of this invention is not limited to the states illustrated in Figures 1-6. This invention may include only any one or more features of any one or more embodiments in Figures 1-6. In other words, not all features shown in the figures need to be implemented simultaneously in the antenna system of this invention.

[0101] The ordinal numbers in this specification and the claims, such as "first", "second", "third", etc., are not sequential in any particular order; they are only used to distinguish between two different components with the same name.

[0102] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. An antenna system, characterized in that, include: a signal source; A board-to-board connector has a common input terminal, a first output terminal, and a second output terminal, wherein the common input terminal of the board-to-board connector is coupled to the signal source; A first antenna assembly having a first feed point, wherein the first feed point is coupled to the first output terminal of the board-to-board connector; as well as A second antenna assembly having a second feed point, wherein the second feed point is coupled to the second output terminal of the board-to-board connector.

2. The antenna system as described in claim 1, characterized in that, The antenna system covers a first frequency band, a second frequency band, and a third frequency band. The first frequency band is between 2400MHz and 2500MHz, the second frequency band is between 5150MHz and 5850MHz, and the third frequency band is between 5925MHz and 7125MHz.

3. The antenna system as described in claim 2, characterized in that, The first antenna assembly includes: A feed radiating section is coupled to the first feed point, wherein the feed radiating section is generally in a meandering shape; An extended radiating portion is coupled to the input radiating portion, wherein the width of the extended radiating portion is greater than the width of the input radiating portion; and A grounded radiating part is coupled to a first grounding point, wherein the grounded radiating part is adjacent to the feed radiating part.

4. The antenna system as described in claim 3, characterized in that, The feed radiation section includes a first part, a second part, and a third part, wherein the second part is coupled between the first part and the third part, and the third part is substantially parallel to the first part.

5. The antenna system as described in claim 3, characterized in that, The total length of the feed radiator and the extended radiator is approximately equal to 0.25 times the wavelength of the first frequency band.

6. The antenna system as described in claim 3, characterized in that, The length of the grounding radiating part is approximately equal to 0.25 times the wavelength of the second frequency band.

7. The antenna system as described in claim 2, characterized in that, The second antenna component includes: A first radiating portion, coupled to the second feed point, wherein the first radiating portion is generally of a bent shape; and A second radiating part is coupled to a second grounding point, wherein the second radiating part is adjacent to the first radiating part.

8. The antenna system as described in claim 7, characterized in that, The first radiating portion includes a first arc-shaped section, a first straight strip section, and an inverted U-shaped section. The second radiating portion includes a second arc-shaped section and a second straight strip section. The second arc-shaped section extends along the first arc-shaped section, and the second straight strip section is approximately parallel to the first straight strip section.

9. The antenna system as described in claim 7, characterized in that, The length of the first radiating element is approximately equal to 0.25 times the wavelength of the first frequency band.

10. The antenna system as claimed in claim 7, characterized in that, The length of the second radiating element is approximately equal to 0.25 times the wavelength of the second frequency band.

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