Antenna system
Patent Information
- Application Number
- CN202510330686.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-09-22
AI Technical Summary
倘若用于接收或发射信号的天线其带宽(Bandwidth)不足，则很容易造成移动装置的通信质量下降
Smart Images
Figure CN122800899A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to an antenna system, and more particularly to a wideband antenna system. 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 ranges; for example, mobile phones use 2G, 3G, and LTE (Long Term Evolution) systems and the frequency bands they use: 700MHz, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz, and 2500MHz. Others cover short-range wireless communication ranges; for example, Wi-Fi and Bluetooth systems use the frequency bands of 2.4GHz, 5.2GHz, and 5.8GHz.
[0003] Antennas are indispensable components in wireless communication. If the bandwidth of an antenna used for receiving or transmitting signals is insufficient, it can easily lead to a degradation in the communication quality of mobile devices. Therefore, designing small-size, wide-bandwidth antenna systems is an important task for antenna designers. Summary of the Invention
[0004] In a preferred embodiment, the present invention provides an antenna system comprising: a first radiating section having a first feed point; a second radiating section, wherein the second radiating section is adjacent to the first radiating section; a third radiating section having a second feed point; a fourth radiating section, wherein the fourth radiating section is adjacent to the third radiating section; an adjustable circuit coupled to a ground potential, wherein the adjustable circuit provides a variable impedance value according to a control signal; a fifth radiating section, wherein the second radiating section and the fourth radiating section are both coupled to the adjustable circuit via the fifth radiating section; a sixth radiating section coupled to the ground potential, wherein the sixth radiating section is adjacent to the third radiating section; and a seventh radiating section coupled to the fourth radiating section, wherein the seventh radiating section is adjacent to the second radiating section; wherein the first radiating section, the second radiating section, and the fifth radiating section form a first antenna structure; wherein the third radiating section, the fourth radiating section, the fifth radiating section, the sixth radiating section, and the seventh radiating section form a second antenna structure.
[0005] In some embodiments, the antenna system further includes: a carrier assembly having opposing first and second surfaces, wherein the first radiating portion, the second radiating portion, the third radiating portion, the fourth radiating portion, the fifth radiating portion, and the sixth radiating portion are all disposed on the first surface, and the seventh radiating portion is disposed on the second surface; and a conductive through-component, wherein the seventh radiating portion is coupled to the fourth radiating portion via the conductive through-component.
[0006] In some embodiments, a first coupling gap is formed between the first radiating portion and the second radiating portion, and the width of the first coupling gap is between 0.15 mm and 4 mm.
[0007] In some embodiments, a second coupling gap is formed between the third radiating portion and the fourth radiating portion, and the width of the second coupling gap is between 0.15 mm and 4 mm.
[0008] In some embodiments, a third coupling gap is formed between the third radiating portion and the sixth radiating portion, and the width of the third coupling gap is between 0.15 mm and 1 mm.
[0009] In some embodiments, a fourth coupling gap is formed between the second radiating portion and the seventh radiating portion, and the width of the fourth coupling gap is between 0.15 mm and 5 mm.
[0010] In some embodiments, the adjustable circuit includes: a first capacitor coupled to the ground potential; a second capacitor coupled to the ground potential; a third capacitor coupled to the ground potential; a fourth capacitor coupled to the ground potential; a fifth capacitor coupled to the ground potential; and a switch coupled to the fifth radiating part, wherein the switch switches between the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, and the fifth capacitor according to the control signal.
[0011] In some embodiments, the capacitance of the first capacitor is between 12pF and 18pF, the capacitance of the second capacitor is between 4pF and 7pF, the capacitance of the third capacitor is between 2.5pF and 4pF, the capacitance of the fourth capacitor is between 1.5pF and 2.5pF, and the capacitance of the fifth capacitor is between 0.5pF and 1.5pF.
[0012] In some embodiments, the adjustable circuit further includes: a proximity sensor coupled to the fifth radiating part, wherein the second radiating part, the fourth radiating part, the fifth radiating part, and the seventh radiating part all serve as sensing plates of the proximity sensor.
[0013] In some embodiments, the antenna system covers a first frequency band, a second frequency band, a third frequency band, a fourth frequency band, and a fifth frequency band.
[0014] In some embodiments, the first frequency band is between 617MHz and 960MHz, the second frequency band is between 1427MHz and 2690MHz, the third frequency band is between 3300MHz and 3980MHz, the fourth frequency band is between 4200MHz and 4700MHz, and the fifth frequency band is between 5150MHz and 5925MHz.
[0015] In some embodiments, the first radiating portion includes a first branch, a second branch, a third branch, and a fourth branch, and the opening slot is formed between the first branch and the second branch.
[0016] In some embodiments, the length of the first branch is approximately equal to 0.25 times the wavelength of the second frequency band.
[0017] In some embodiments, the length of the second branch is approximately equal to 0.25 times the wavelength of the third frequency band.
[0018] In some embodiments, the length of the third branch is approximately equal to 0.25 times the wavelength of the fourth frequency band.
[0019] In some embodiments, the length of the fourth branch is approximately equal to 0.25 times the wavelength of the fifth frequency band.
[0020] In some embodiments, the total length of the second radiating portion and the fifth radiating portion is between 0.125 and 0.25 times the wavelength of the first frequency band.
[0021] In some embodiments, the third radiating portion includes a protruding branch, the length of which is between 0.125 and 0.25 times the wavelength of the fourth frequency band.
[0022] In some embodiments, the total length of the fourth radiating portion and the fifth radiating portion is between 0.125 and 0.25 times the wavelength of the second frequency band.
[0023] In some embodiments, the length of the sixth radiating element is between 0.125 and 0.25 times the wavelength of the fourth frequency band. Attached Figure Description
[0024] Figure 1 This is a top view of the antenna system according to an embodiment of the present invention.
[0025] Figure 2 The image shows a side view of the antenna system according to an embodiment of the present invention.
[0026] Figure 3 This diagram shows the structure of the adjustable circuit according to an embodiment of the present invention.
[0027] Figure 4 The diagram shows the return loss of the first antenna structure of the antenna system according to an embodiment of the present invention.
[0028] Figure 5 The diagram shows the return loss of the second antenna structure of the antenna system according to an embodiment of the present invention.
[0029] [Symbol Explanation]
[0030] 100: Antenna System
[0031] 110: First Radiation Department
[0032] 111: First Branch Road
[0033] 112: Second branch road
[0034] 113: Third Branch Road
[0035] 114: Fourth Branch Road
[0036] 116: Open slot hole
[0037] 120: Second Radiation Section
[0038] 121: The first end of the second radiating section
[0039] 122: The second end of the second radiating section
[0040] 130: Third Radiation Department
[0041] 135: Prominent side road
[0042] 136: Widened section
[0043] 140: Fourth Radiation Department
[0044] 141: The first end of the fourth radiating section
[0045] 142: The second end of the fourth radiating section
[0046] 150: Fifth Radiation Department
[0047] 151: The first end of the fifth radiating section
[0048] 152: The second end of the fifth radiating section
[0049] 160: Sixth Radiation Department
[0050] 161: The first end of the sixth radiating section
[0051] 162: The second end of the sixth radiating section
[0052] 170: Seventh Radiation Department
[0053] 171: The first end of the seventh radiating section
[0054] 172: The second end of the seventh radiating section
[0055] 180: Adjustable circuit
[0056] 185: Switcher
[0057] 186: Proximity Sensor
[0058] 190: Carrier Component
[0059] 191: First Signal Source
[0060] 192: Second signal source
[0061] 195: Conductive Through-Mechanism
[0062] C1: First capacitor
[0063] C2: Second capacitor
[0064] C3: Third capacitor
[0065] C4: Fourth capacitor
[0066] C5: Fifth capacitor
[0067] E1: First surface
[0068] E2: Second Surface
[0069] FB1: First Band
[0070] FB2: Second band
[0071] FB3: Third Band
[0072] FB4: Fourth Band
[0073] FB5: Fifth Band
[0074] FP1: First feed point
[0075] FP2: Second feed point
[0076] GC1: First coupling gap
[0077] GC2: Second coupling gap
[0078] GC3: Third coupling gap
[0079] GC4: Fourth Coupling Gap
[0080] H1: Thickness
[0081] L1, L2, L3, L4, L5, L6, L7, L8, L9: Length
[0082] SC: Control signal
[0083] U1: First Curve
[0084] U2: Second Curve
[0085] U3: Third Curve
[0086] U4: Fourth Curve
[0087] U5: The Fifth Curve
[0088] U6: The Sixth Curve
[0089] U7: The Seventh Curve
[0090] U8: Eighth Curve
[0091] U9: The Ninth Curve
[0092] U10: The Tenth Curve
[0093] VSS: Grounding Potential
[0094] Z: Variable impedance value Detailed Implementation
[0095] To make the objectives, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below in conjunction with the accompanying drawings for detailed explanation.
[0096] 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.
[0097] The following disclosure provides many different embodiments or examples to implement the various features of this application. 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 disclosure 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 markings may be repeated in different examples in the following disclosure. These repetitions are for simplification and clarity and are not intended to limit the specific relationships between the different embodiments or / and structures discussed.
[0098] Furthermore, spatial terms such as "below," "below," "lower," "above," "higher," and similar terms are used to facilitate the description of the relationship between one component or feature in the icon and another component(s). In addition to the orientation shown in the diagram, these spatial terms are intended to encompass different orientations of the device in use or operation. The device may be rotated to different orientations (90 degrees or other orientations), and the spatial terms used here can be interpreted in the same way.
[0099] Figure 1 This is a top view of the antenna system 100 according to an embodiment of the present invention. Figure 2 This is a side view of the antenna system 100 according to an embodiment of the present invention. Please refer to the following: Figure 1 , Figure 2 The antenna system 100 can be used in mobile devices, such as smartphones, tablet computers, or notebook computers. Figure 1 , 2 In the embodiments, the antenna system 100 includes at least: a first radiating element 110, a second radiating element 120, a third radiating element 130, a fourth radiating element 140, a fifth radiating element 150, a sixth radiating element 160, a seventh radiating element 170, and a tunable circuit 180, wherein the first radiating element 110, the second radiating element 120, the third radiating element 130, the fourth radiating element 140, the fifth radiating element 150, the sixth radiating element 160, and the seventh radiating element 170 can all be made of metal materials, such as copper, silver, aluminum, iron, or their alloys.
[0100] The first radiating section 110 includes a first branch 111, a second branch 112, a third branch 113, and a fourth branch 114, each of which is coupled to a first feeding point FP1. The first feeding point FP1 may also be coupled to the positive electrode of a first signal source 191, while the negative electrode of the first signal source 191 may be coupled to ground voltage VSS. For example, the first signal source 191 may be a radio frequency (RF) module, and the ground voltage VSS may be provided by the system ground plane of the antenna system 100 (not shown). In some embodiments, an open slot 116 may be formed between the first branch 111 and the second branch 112, wherein the open slot 116 may be generally straight.
[0101] The second radiating portion 120 may be generally elongated and straight, and may be generally parallel to the aforementioned opening slot 116. Specifically, the second radiating portion 120 has a first end 121 and a second end 122, wherein the second end 122 of the second radiating portion 120 is an open end. In some embodiments, the second radiating portion 120 is adjacent to the first branch 111 and the third branch 113 of the first radiating portion 110, wherein a first coupling gap GC1 may be formed between the first radiating portion 110 and the second radiating portion 120. It should be noted that the terms "adjacent" or "adjacent" in this specification may refer to a distance between the corresponding two components being less than a predetermined distance (e.g., 10 mm or less), but generally do not include cases where the corresponding two components are in direct contact with each other (i.e., the aforementioned distance is reduced to 0).
[0102] The third radiating section 130 includes a protruding branch 135 and a widening portion 136, each of which is coupled to a second feed point FP2. The second feed point FP2 may also be coupled to the positive terminal of a second signal source 192, while the negative terminal of the second signal source 192 may be coupled to ground potential VSS. For example, the second signal source 192 may be another radio frequency module, which may differ from the aforementioned first signal source 191.
[0103] The fourth radiating portion 140 may be generally of a medium straight shape (compared to the second radiating portion 120). Specifically, the fourth radiating portion 140 has a first end 141 and a second end 142, wherein the first end 141 of the fourth radiating portion 140 is coupled to the first end 121 of the second radiating portion 120, and the second end 142 of the fourth radiating portion 140 is an open-circuit end. For example, the second end 122 of the second radiating portion 120 and the second end 142 of the fourth radiating portion 140 may extend in generally opposite and mutually distant directions. In some embodiments, the fourth radiating portion 140 is adjacent to the widened portion 136 of the third radiating portion 130, wherein a second coupling gap GC2 may be formed between the third radiating portion 130 and the fourth radiating portion 140.
[0104] The fifth radiating section 150 may be generally short and straight (compared to the fourth radiating section 140), and may be generally perpendicular to both the second radiating section 120 and the fourth radiating section 140. Specifically, the fifth radiating section 150 has a first end 151 and a second end 152, wherein the first end 151 of the fifth radiating section 150 is coupled to the adjustable circuit 180, and the second end 152 of the fifth radiating section 150 is coupled to the first end 121 of the second radiating section 120 and the first end 141 of the fourth radiating section 140. That is, both the second radiating section 120 and the fourth radiating section 140 can be coupled to the adjustable circuit 180 via the fifth radiating section 150. In some embodiments, the combination of the second radiating section 120, the fourth radiating section 140, and the fifth radiating section 150 may also generally form a T-shape.
[0105] The sixth radiating section 160 may generally present a small L-shape. Specifically, the sixth radiating section 160 has a first end 161 and a second end 162, wherein the first end 161 of the sixth radiating section 160 is coupled to a ground potential VSS, and the second end 162 of the sixth radiating section 160 is an open-circuit end and may extend toward the fourth radiating section 140. In some embodiments, the second end 162 of the sixth radiating section 160 is adjacent to a protruding branch 135 of the third radiating section 130, wherein a third coupling gap GC3 may be formed between the third radiating section 130 and the sixth radiating section 160.
[0106] The seventh radiating portion 170 may generally have a larger L-shape (compared to the sixth radiating portion 160). Specifically, the seventh radiating portion 170 has a first end 171 and a second end 172, wherein the first end 171 of the seventh radiating portion 170 is coupled to the first end 141 of the fourth radiating portion 140, and the second end 172 of the seventh radiating portion 170 is an open-circuit end. For example, the second end 122 of the second radiating portion 120 and the second end 172 of the seventh radiating portion 170 may both extend in generally the same direction. In some embodiments, the seventh radiating portion 170 is adjacent to the second radiating portion 120, wherein a fourth coupling gap GC4 may be formed between the second radiating portion 120 and the seventh radiating portion 170.
[0107] The adjustable circuit 180 is coupled to ground potential VSS. In some embodiments, the adjustable circuit 180 can provide a variable impedance value Z to the fifth radiator 150 according to a control signal SC. For example, the aforementioned control signal SC can be generated by a processor according to user input (not shown), but is not limited to this.
[0108] In some embodiments, the antenna system 100 further includes a carrier element 190 and a conductive via element 195 passing through the carrier element 190. The carrier element 190 can be made of a nonconductive material, and its shape and design are not particularly limited in this invention. For example, the carrier element 190 can be implemented using an FR4 (Flame Retardant 4) substrate, a printed circuit board (PCB), or a flexible printed circuit (FPC). Specifically, the carrier element 190 has opposing first surfaces E1 and second surfaces E2, wherein the first radiating portion 110, the second radiating portion 120, the third radiating portion 130, the fourth radiating portion 140, the fifth radiating portion 150, and the sixth radiating portion 160 can all be disposed on the first surface E1 of the carrier element 190, while the seventh radiating portion 170 can be disposed on the second surface E2 of the carrier element 190. The adjustable circuit 180 is disposed on either the first surface E1 or the second surface E2 of the carrier assembly 190.
[0109] Additionally, the seventh radiating portion 170 may be coupled to the first end 141 of the fourth radiating portion 140 via a conductive through-component 195. It must be understood that the conductive through-component 195 is only an optional component. If the conductive through-component 195 is omitted, the fourth radiating portion 140 and the seventh radiating portion 170 may be coupled to each other at the same edge of the carrier assembly 190. In some embodiments, the fifth radiating portion 150 has a vertical projection on the second surface E2 of the carrier assembly 190, wherein this vertical projection may at least partially overlap with the seventh radiating portion 170.
[0110] In a preferred embodiment, the first radiating portion 110, the second radiating portion 120, and the fifth radiating portion 150 can form the first antenna structure of the antenna system 100, while the third radiating portion 130, the fourth radiating portion 140, the fifth radiating portion 150, the sixth radiating portion 160, and the seventh radiating portion 170 can form the second antenna structure of the antenna system 100. It should be noted that since the aforementioned first antenna structure and second antenna structure share the fifth radiating portion 150 and the adjustable circuit 180, the overall size of the antenna system 100 can be further miniaturized.
[0111] Figure 3 This diagram shows the structure of the adjustable circuit 180 according to an embodiment of the present invention. Figure 3 In this embodiment, the adjustable circuit 180 includes a switch element 185, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, and a fifth capacitor C5. For example, the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, and the fifth capacitor C5 can all be coupled to ground potential VSS, and they can have different capacitance values. Specifically, one end of the switch element 185 is coupled to a first end 151 of the fifth radiator 150, while the other end of the switch element 185 switches between the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, and the fifth capacitor C5 according to a control signal SC. That is, if the adjustable circuit 180 uses the switch element 185 to select one of the first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, and the fifth capacitor C5, then the fifth radiator 150 can be coupled to ground potential VSS via the selected single capacitor. Additionally, the remaining unselected capacitors remain open-circuited, thus not affecting the variable impedance value Z of the adjustable circuit 180. In other embodiments, the adjustable circuit 180 may also include fewer or more capacitors depending on different requirements.
[0112] In some embodiments, the adjustable circuit 180 further includes a proximity sensor 186, which is also coupled to the fifth radiator 150. The second radiator 120, the fourth radiator 140, the fifth radiator 150, and the seventh radiator 170 can all serve as sensing pads for this proximity sensor 186. Therefore, the antenna system 100 can also be considered a hybrid antenna, which can provide both proximity sensing and specific absorption rate (SAR) suppression functions without increasing the design area.
[0113] Figure 4 This diagram shows the return loss of the first antenna structure of the antenna system 100 according to an embodiment of the present invention, where the horizontal axis represents the operating frequency (MHz) and the vertical axis represents the return loss (dB). Figure 4 As shown, the first curve U1 represents the operating characteristics of the first antenna structure when the switch 185 of the adjustable circuit 180 switches to the first capacitor C1, the second curve U2 represents the operating characteristics of the first antenna structure when the switch 185 of the adjustable circuit 180 switches to the second capacitor C2, the third curve U3 represents the operating characteristics of the first antenna structure when the switch 185 of the adjustable circuit 180 switches to the third capacitor C3, the fourth curve U4 represents the operating characteristics of the first antenna structure when the switch 185 of the adjustable circuit 180 switches to the fourth capacitor C4, and the fifth curve U5 represents the operating characteristics of the first antenna structure when the switch 185 of the adjustable circuit 180 switches to the fifth capacitor C5.
[0114] Figure 5 This diagram shows the return loss of the second antenna structure of the antenna system 100 according to an embodiment of the present invention, where the horizontal axis represents the operating frequency (MHz) and the vertical axis represents the return loss (dB). Figure 5 As shown, the sixth curve U6 represents the operating characteristics of the second antenna structure when the switch 185 of the adjustable circuit 180 switches to the first capacitor C1, the seventh curve U7 represents the operating characteristics of the second antenna structure when the switch 185 of the adjustable circuit 180 switches to the second capacitor C2, the eighth curve U8 represents the operating characteristics of the second antenna structure when the switch 185 of the adjustable circuit 180 switches to the third capacitor C3, the ninth curve U9 represents the operating characteristics of the second antenna structure when the switch 185 of the adjustable circuit 180 switches to the fourth capacitor C4, and the tenth curve U10 represents the operating characteristics of the second antenna structure when the switch 185 of the adjustable circuit 180 switches to the fifth capacitor C5.
[0115] according to Figure 4, Figure 5 Based on the measurement results, the antenna system 100 can cover a first frequency band (FB1), a second frequency band (FB2), a third frequency band (FB3), a fourth frequency band (FB4), and a fifth frequency band (FB5). For example, the first frequency band (FB1) can be between 617MHz and 960MHz, the second frequency band (FB2) can be between 1427MHz and 2690MHz, the third frequency band (FB3) can be between 3300MHz and 3980MHz, the fourth frequency band (FB4) can be between 4200MHz and 4700MHz, and the fifth frequency band (FB5) can be between 5150MHz and 5925MHz. Therefore, the antenna system 100 will at least support broadband operation of GPS (Global Positioning System) and LTE (Long Term Evolution).
[0116] In some embodiments, the component dimensions and component parameters of the antenna system 100 may be as described below. In the first radiating section 110, the length L1 of the first branch 111 may be approximately equal to 0.25 times the wavelength (λ / 4) of the second frequency band FB2 of the antenna system 100, the length L2 of the second branch 112 may be approximately equal to 0.25 times the wavelength (λ / 4) of the third frequency band FB3 of the antenna system 100, the length L3 of the third branch 113 may be approximately equal to 0.25 times the wavelength (λ / 4) of the fourth frequency band FB4 of the antenna system 100, and the length L4 of the fourth branch 114 may be approximately equal to 0.25 times the wavelength (λ / 4) of the fifth frequency band FB5 of the antenna system 100. The total length L5 of the second radiating section 120 and the fifth radiating section 150 may be between 0.125 times and 0.25 times the wavelength (λ / 8 to λ / 4) of the first frequency band FB1 of the antenna system 100. The length L6 of the protruding branch 135 of the third radiating section 130 may be between 0.125 and 0.25 times the wavelength of the fourth frequency band FB4 of the antenna system 100 (λ / 8 to λ / 4). The total length L7 of the fourth radiating section 140 and the fifth radiating section 150 may be between 0.125 and 0.25 times the wavelength of the second frequency band FB2 of the antenna system 100 (λ / 8 to λ / 4). The length L8 of the sixth radiating section 160 may be between 0.125 and 0.25 times the wavelength of the fourth frequency band FB4 of the antenna system 100 (λ / 8 to λ / 4). The length L9 of the seventh radiating section 170 may be approximately equal to 0.25 times the wavelength of any one of the second frequency band FB2, the third frequency band FB3, the fourth frequency band FB4, and the fifth frequency band FB5 of the antenna system 100 (λ / 4). The thickness H1 of the carrier assembly 190 may be between 0.2 mm and 10 mm. The width of the first coupling gap GC1 can be between 0.15mm and 4mm. The width of the second coupling gap GC2 can be between 0.15mm and 4mm. The width of the third coupling gap GC3 can be between 0.15mm and 1mm. The width of the fourth coupling gap GC4 can be between 0.15mm and 5mm. The capacitance of the first capacitor C1 can be between 12pF and 18pF, for example, approximately 15pF. The capacitance of the second capacitor C2 can be between 4pF and 7pF, for example, approximately 5.29pF. The capacitance of the third capacitor C3 can be between 2.5pF and 4pF, for example, approximately 3.26pF. The capacitance of the fourth capacitor C4 can be between 1.5pF and 2.5pF, for example, approximately 1.9pF. The capacitance of the fifth capacitor C5 can be between 0.5pF and 1.5pF, for example, approximately 1pF.The above component dimensions and parameter ranges were determined based on the results of multiple experiments. They help optimize the operating bandwidth and impedance matching of the antenna system 100, and also enhance the isolation between the first antenna structure and the second antenna structure of the antenna system 100.
[0117] This invention proposes a novel antenna system. Compared with traditional designs, this invention has advantages such as supporting multi-input and multi-output (MIMO) operation, reducing the overall antenna size, and increasing the overall antenna bandwidth, making it well-suited for application in various types of mobile communication devices.
[0118] It is worth noting that the component dimensions, shapes, parameters, and frequency ranges described above are not limiting factors of this invention. Antenna designers can adjust these settings according to different needs. The antenna system of this invention is not limited to... Figures 1-5 The state illustrated. This invention may include only... Figures 1-5 Any one or more features of any one or more embodiments. In other words, not all features of the icons need to be implemented simultaneously in the antenna system of the present invention.
[0119] 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.
[0120] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the scope of the invention. Anyone skilled in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.
Claims
1. An antenna system, comprising: The first radiating section has a first feed point; A second radiating portion, wherein the second radiating portion is adjacent to the first radiating portion; The third radiating section has a second feed point; A fourth radiating part, wherein the fourth radiating part is adjacent to the third radiating part; An adjustable circuit coupled to ground potential, wherein the adjustable circuit provides a variable impedance value according to a control signal; The fifth radiating section, wherein the second radiating section and the fourth radiating section are both coupled to the adjustable circuit via the fifth radiating section; A sixth radiating part is coupled to the ground potential, wherein the sixth radiating part is adjacent to the third radiating part; as well as A seventh radiating part is coupled to the fourth radiating part, wherein the seventh radiating part is adjacent to the second radiating part; The first radiating part, the second radiating part, and the fifth radiating part together form a first antenna structure; The third, fourth, fifth, sixth, and seventh radiating sections form a second antenna structure.
2. The antenna system as claimed in claim 1, further comprising: A carrier assembly has opposing first and second surfaces, wherein a first radiating portion, a second radiating portion, a third radiating portion, a fourth radiating portion, a fifth radiating portion, and a sixth radiating portion are all disposed on the first surface, while a seventh radiating portion is disposed on the second surface; and A conductive through-component, wherein the seventh radiating portion is coupled to the fourth radiating portion via the conductive through-component.
3. The antenna system of claim 1, wherein a first coupling gap is formed between the first radiating part and the second radiating part, and the width of the first coupling gap is between 0.15 mm and 4 mm.
4. The antenna system of claim 1, wherein a second coupling gap is formed between the third radiating part and the fourth radiating part, and the width of the second coupling gap is between 0.15 mm and 4 mm.
5. The antenna system of claim 1, wherein a third coupling gap is formed between the third radiating part and the sixth radiating part, and the width of the third coupling gap is between 0.15 mm and 1 mm.
6. The antenna system of claim 1, wherein a fourth coupling gap is formed between the second radiating part and the seventh radiating part, and the width of the fourth coupling gap is between 0.15 mm and 5 mm.
7. The antenna system of claim 1, wherein the adjustable circuit comprises: The first capacitor is coupled to the ground potential; The second capacitor is coupled to the ground potential; A third capacitor is coupled to the ground potential; A fourth capacitor is coupled to the ground potential; The fifth capacitor is coupled to the ground potential; as well as A switcher is coupled to the fifth radiating section, wherein the switcher switches between the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, and the fifth capacitor according to the control signal.
8. The antenna system of claim 7, wherein the capacitance of the first capacitor is between 12pF and 18pF, the capacitance of the second capacitor is between 4pF and 7pF, the capacitance of the third capacitor is between 2.5pF and 4pF, the capacitance of the fourth capacitor is between 1.5pF and 2.5pF, and the capacitance of the fifth capacitor is between 0.5pF and 1.5pF.
9. The antenna system of claim 7, wherein the adjustable circuit further comprises: A proximity sensor is coupled to the fifth radiating part, wherein the second radiating part, the fourth radiating part, the fifth radiating part, and the seventh radiating part all serve as sensing plates for the proximity sensor.
10. The antenna system of claim 1, wherein the antenna system covers a first frequency band, a second frequency band, a third frequency band, a fourth frequency band, and a fifth frequency band.
11. The antenna system of claim 10, wherein the first frequency band is between 617 MHz and 960 MHz, the second frequency band is between 1427 MHz and 2690 MHz, the third frequency band is between 3300 MHz and 3980 MHz, the fourth frequency band is between 4200 MHz and 4700 MHz, and the fifth frequency band is between 5150 MHz and 5925 MHz.
12. The antenna system of claim 10, wherein the first radiating part includes a first branch, a second branch, a third branch, and a fourth branch, and the opening slot is formed between the first branch and the second branch.
13. The antenna system of claim 12, wherein the length of the first branch is approximately equal to 0.25 times the wavelength of the second frequency band.
14. The antenna system of claim 12, wherein the length of the second branch is approximately equal to 0.25 times the wavelength of the third frequency band.
15. The antenna system of claim 12, wherein the length of the third branch is approximately equal to 0.25 times the wavelength of the fourth frequency band.
16. The antenna system of claim 12, wherein the length of the fourth branch is approximately equal to 0.25 times the wavelength of the fifth frequency band.
17. The antenna system of claim 10, wherein the total length of the second radiating element and the fifth radiating element is between 0.125 times and 0.25 times the wavelength of the first frequency band.
18. The antenna system of claim 10, wherein the third radiating element includes a protruding branch, and the length of the protruding branch is between 0.125 and 0.25 times the wavelength of the fourth frequency band.
19. The antenna system of claim 10, wherein the total length of the fourth radiating element and the fifth radiating element is between 0.125 times and 0.25 times the wavelength of the second frequency band.
20. The antenna system of claim 10, wherein the length of the sixth radiating element is between 0.125 and 0.25 times the wavelength of the fourth frequency band.