Antenna structure, mainboard and electronic product
By setting a clearance zone at the edge of the circuit board and integrating antenna components, the problem of large space occupancy of independent antenna structures is solved, cost reduction and product integration are achieved, and ultra-thin design of electronic products is supported.
Patent Information
- Application Number
- CN202420617780.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-03-27
AI Technical Summary
Among existing electronic products, independent antenna structures occupy a large space, increase costs, and are not conducive to the ultra-thin development of the product.
Setting a clearance at the edge of the circuit board is integrated with antenna components, including feed microstrips, board edge microstrips and resonant microstrips, to achieve antenna performance through radio frequency signal coupling.
It reduces antenna costs, saves space, improves the integration of the product as a whole machine, and supports the ultra-thin design of electronic products.
Smart Images
Figure CN222785462U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of antennas, and in particular to an antenna structure, a mainboard and an electronic product. Background Art
[0002] Antennas play a role in sending and receiving wireless signals in electronic products, and are essential equipment for electronic products. With the continuous development of the performance of electronic products, the performance requirements for antennas are also constantly improving. Therefore, it is necessary to reasonably set the antenna in electronic products.
[0003] At present, when designing electronic products, an independent antenna structure needs to be used, and corresponding installation space needs to be reserved for the antenna in the electronic products. This method not only increases the cost of the antenna, but also is not conducive to the development of electronic products towards ultra-thinness. Utility Model Content
[0004] In order to solve at least the above technical problems existing in the prior art, the utility model provides an antenna structure, a mainboard and an electronic product.
[0005] On the one hand, the utility model provides an antenna structure, including a circuit board and an antenna assembly; a clearance area is set on one side of the surface of the circuit board, and the antenna assembly is located in the clearance area and is coplanar with the circuit board; the antenna assembly includes a first board edge microstrip and a feeding microstrip, the first board edge microstrip is connected to the grounding electrode of the circuit board, and the feeding microstrip is connected to the circuit board through a feeding port; a set distance is provided between the end of the feeding microstrip and the end of the first board edge microstrip, and a radio frequency signal is coupled and fed into the first board edge microstrip through the feeding microstrip.
[0006] In some embodiments, the first board edge microstrip is located at the edge of the clearance area and the circuit board and extends along the edge of the clearance area and the circuit board; the feeding microstrip is located on the inner side of the first board edge microstrip and extends into the clearance area.
[0007] In some embodiments, the antenna assembly also includes a second board edge microstrip, which is located at the edge of the clearance area and the circuit board, and extends along the edge of the clearance area and the circuit board toward the first board edge microstrip; the second board edge microstrip is connected to the ground electrode of the circuit board, and there is a set distance between the end of the second board edge microstrip and the end of the first board edge microstrip, and the radio frequency signal is fed into the first board edge microstrip and the second board edge microstrip through the feed microstrip coupling.
[0008] In some embodiments, the antenna assembly also includes a resonant microstrip, which is located on the side between the side where the second board edge microstrip is located and the side where the feeding microstrip is located, and extends into the clearance area; the resonant microstrip is connected to the grounding electrode of the circuit board, and there is a set distance between the end of the resonant microstrip and the end of the feeding microstrip, and the radio frequency signal is coupled to the first board edge microstrip, the second board edge microstrip and the resonant microstrip through the feeding microstrip.
[0009] In some embodiments, the circuit board further includes a matching circuit; the feeding microstrip is connected to the matching circuit of the circuit board through the feeding port.
[0010] In some embodiments, the feeding microstrip and the resonant microstrip have set lengths, and the feeding microstrip and the resonant microstrip are in a straight line shape or a meander shape.
[0011] In some embodiments, the clearance area is rectangular; the length of the clearance area ranges from 14 mm to 18 mm, and the width of the clearance area ranges from 2 mm to 6 mm.
[0012] In some embodiments, the distance between the end of the feeding microstrip and the end of the first board edge microstrip ranges from 0.2 mm to 0.4 mm; the distance between the end of the second board edge microstrip and the end of the first board edge microstrip ranges from 0.8 mm to 1.2 mm; the distance between the end of the resonant microstrip and the end of the feeding microstrip ranges from 0.5 mm to 0.9 mm, and the distance between the end of the resonant microstrip and the end of the second board edge microstrip ranges from 0.3 mm to 0.7 mm.
[0013] On the other hand, the utility model further provides a mainboard, comprising the above antenna structure.
[0014] In another aspect, the utility model further provides an electronic product, comprising the above antenna structure or the above mainboard.
[0015] The utility model provides an antenna structure, a mainboard and an electronic product, in which a clearance area is set at the edge of a circuit board (PCB board), and the circuit board in this area is not provided with circuit components, and the feed microstrip, the board edge microstrip and the resonant microstrip of the antenna are arranged in this area, and the radio frequency signal is fed into the board edge microstrip and the resonant microstrip through the feed microstrip coupling to achieve antenna performance. The technical solution of the utility model arranges the antenna structure on the mainboard, which can not only reduce costs, but also save space. When applied to electronic products, there is no need to reserve a separate antenna space inside the product, thereby improving the integration of the whole product. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] By reading the detailed description below with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, wherein:
[0017] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.
[0018] Figure 1 A schematic diagram of a single-resonance antenna structure provided in an embodiment of the utility model;
[0019] Figure 2 A schematic diagram of a dual-resonance antenna structure provided in an embodiment of the utility model;
[0020] Figure 3 A schematic diagram of the structure of a three-resonance antenna structure provided by an embodiment of the utility model;
[0021] Figure 4 A schematic diagram of a partial structure of an antenna structure provided in an embodiment of the utility model;
[0022] Figure 5 for Figure 1 Simulation S-parameter result diagram of the antenna structure shown;
[0023] Figure 6 for Figure 2 Simulation S-parameter result diagram of the antenna structure shown;
[0024] Figure 7 for Figure 3 Simulation S-parameter result diagram of the antenna structure shown;
[0025] Figure 8 for Figure 1 Antenna efficiency plot for the antenna structure shown;
[0026] Fig. 9 for Figure 2 Antenna efficiency plot for the antenna structure shown;
[0027] Fig.10 for Figure 3 Antenna efficiency plot for the antenna structure shown.
[0028] In the figure:
[0029] 1: Circuit board; 2: Antenna assembly;
[0030] 11: Clearance area; 12: Matching circuit;
[0031] 21: first board edge microstrip; 22: feeding microstrip; 23: feeding port; 24: second board edge microstrip; 25: resonant microstrip. DETAILED DESCRIPTION
[0032] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0033] An embodiment of the utility model provides an antenna structure, including a circuit board and an antenna assembly; a clearance area is reserved on the circuit board, and there are no circuit components on the circuit board in the clearance area. The antenna assembly includes a microstrip structure and is integrated in the clearance area, thereby realizing the integration of the antenna on the circuit board.
[0034] The following describes in detail the various structures of the antenna structure provided by the embodiment of the utility model, and the positional relationship and connection relationship between the various structures in conjunction with the accompanying drawings.
[0035] In the embodiment of the utility model, a clearance area 11 is set on one side of the surface of the circuit board 1, and the antenna component 2 is located in the clearance area 11 and is coplanar with the circuit board 1; the clearance area 11 is used to integrate the antenna component 2.
[0036] The clearance area 11 is located at the edge of the circuit board 1. When the circuit board 1 is manufactured, no circuit components are set in the clearance area 11, and the corresponding antenna assembly 2 structure is formed. The shape and size of the clearance area 11 can be determined according to the size of the circuit board 1 or the performance requirements of the antenna assembly 2.
[0037] For example, Figures 1 to 3 As shown, the clearance area 11 is in the shape of a rectangle, wherein one of the long sides is located at the edge of the circuit board 1. For example, the length of the clearance area 11 ranges from 14 mm to 18 mm, and the width of the clearance area 11 ranges from 2 mm to 6 mm.
[0038] In the embodiment of the utility model, Figure 1 As shown, the antenna assembly 2 includes a first board edge microstrip 21 and a feeding microstrip 22. The first board edge microstrip 21 and the feeding microstrip 22 are arranged in the clearance area 11 of the circuit board 1 to form a single resonant antenna. The first board edge microstrip 21 is connected to the ground electrode of the circuit board 1, and the feeding microstrip 22 is connected to the circuit board 1 through the feeding port 23; there is a set distance between the end of the feeding microstrip 22 and the end of the first board edge microstrip 21, and the radio frequency signal is coupled and fed into the first board edge microstrip 21 through the feeding microstrip 22.
[0039] For example, the first board edge microstrip 21 is located at the edge of the clearance area 11 and the circuit board 1, and extends along the edge of the clearance area 11 and the circuit board 1; the feeding microstrip 22 is located on the inner side of the first board edge microstrip 21, and extends into the clearance area 11. In the figure, the clearance area 11 is rectangular, which includes a first long side, a second long side, a first wide side and a second wide side. The first board edge microstrip 21 is located at the first long side and connected to the first wide side. The end of the first board edge microstrip 21 is spaced apart from the second wide side. The feeding microstrip 22 is arranged at the second long side, and the end of the feeding microstrip 22 is arranged toward the end of the first board edge microstrip 21. The shape of the feeding microstrip 22 is a straight line shape or a bent shape. For example, the distance a1 between the end of the feeding microstrip 22 and the end of the first board edge microstrip 21 ranges from 0.2 mm to 0.4 mm.
[0040] like Figure 5 As shown, it is the S parameter of the antenna port of the antenna structure, which is given by Figure 5 It can be seen that the resonant center working point of the antenna structure is at 2.43 GHz, and at 2.43 GHz, S11<-14 dB, and the antenna structure has good return loss.
[0041] like Figure 8 As shown, it is the antenna efficiency diagram of the antenna structure, which is Figure 8 It can be seen that the antenna efficiency of this antenna structure is greater than -0.5dB in the 2.43GHz frequency band, and the antenna radiation performance is excellent.
[0042] In the embodiment of the utility model, Figures 1 to 3 As shown, the circuit board 1 also includes a matching circuit 12; the feeding microstrip 22 is connected to the matching circuit 12 of the circuit board 1 through the feeding port 23. The matching circuit 12 is used to transmit the signal power of the source end to the load end to the maximum extent, and the antenna can be debugged conveniently by configuring the matching circuit 12.
[0043] In the embodiment of the utility model, Figure 2 As shown, the antenna assembly 2 includes a first board edge microstrip 21, a second board edge microstrip 24 and a feeding microstrip 22. The first board edge microstrip 21, the second board edge microstrip 24 and the feeding microstrip 22 are arranged in the clearance area 11 of the circuit board 1 to form a dual-resonance antenna. The first board edge microstrip 21 and the second board edge microstrip 24 are connected to the ground electrode of the circuit board 1, and the feeding microstrip 22 is connected to the circuit board 1 through the feeding port 23. There is a set distance between the end of the feeding microstrip 22 and the end of the first board edge microstrip 21, and there is a set distance between the end of the second board edge microstrip 24 and the end of the first board edge microstrip 21. The radio frequency signal is coupled and fed into the first board edge microstrip 21 and the second board edge microstrip 24 through the feeding microstrip 22.
[0044] For example, the first board edge microstrip 21 and the second board edge microstrip 24 are arranged at the edge of the clearance area 11 and the circuit board 1, and extend toward each other along the edge of the clearance area 11 and the circuit board 1; the feeding microstrip 22 is located at the inner side of the first board edge microstrip 21 and the second board edge microstrip 24, and extends into the clearance area 11. In the figure, the clearance area 11 is rectangular, which includes a first long side, a second long side, a first wide side and a second wide side. The first board edge microstrip 21 and the second board edge microstrip 24 are located at the first long side, and the first board edge microstrip 21 is connected to the first wide side, and the second board edge microstrip 24 is connected to the second wide side. The feeding microstrip 22 is arranged at the second long side, and the ends of the second board edge microstrip 24 and the feeding microstrip 22 are respectively arranged toward the end of the first board edge microstrip 21, and the feeding microstrip 22 is in a straight line shape or a bent shape. For example, the distance a1 between the end of the feeding microstrip 22 and the end of the first board edge microstrip 21 ranges from 0.2 mm to 0.4 mm, and the distance a2 between the end of the second board edge microstrip 24 and the end of the first board edge microstrip 21 ranges from 0.8 mm to 1.2 mm.
[0045] like Figure 6 As shown, it is the S parameter of the antenna port of the antenna structure, which is given by Figure 6 It can be seen that the resonant center working points of the antenna structure are at 2.42 GHz and 5.95 GHz, and at 2.42 GHz, S11<-24 dB, and at 5.95 GHz, S11<-10 dB. The antenna structure has good return loss.
[0046] like Fig. 9 As shown, it is the antenna efficiency diagram of the antenna structure, which is Fig. 9 It can be seen that the antenna efficiency of this antenna structure is greater than -0.5dB in the 2.42GHz and 5.95GHz frequency bands, and the antenna radiation performance is excellent.
[0047] In the embodiment of the utility model, Figure 3 As shown, the antenna assembly 2 includes a first board edge microstrip 21, a second board edge microstrip 24, a resonant microstrip 25 and a feeding microstrip 22. The first board edge microstrip 21, the second board edge microstrip 24, the resonant microstrip 25 and the feeding microstrip 22 are arranged in the clearance area 11 of the circuit board 1 to form a three-resonance antenna. The first board edge microstrip 21, the second board edge microstrip 24 and the resonant microstrip 25 are connected to the ground electrode of the circuit board 1, and the feeding microstrip 22 is connected to the circuit board 1 through the feeding port 23. There is a set distance between the end of the feeding microstrip 22 and the end of the first board edge microstrip 21, there is a set distance between the end of the second board edge microstrip 24 and the end of the first board edge microstrip 21, and there is a set distance between the end of the resonant microstrip 25 and the end of the feeding microstrip 22. The radio frequency signal is coupled and fed into the first board edge microstrip 21, the second board edge microstrip 24 and the resonant microstrip 25 through the feeding microstrip 22.
[0048] For example, the first board edge microstrip 21 and the second board edge microstrip 24 are arranged at the edge of the clearance area 11 and the circuit board 1, and extend toward each other along the edge of the clearance area 11 and the circuit board 1; the feeding microstrip 22 is located on the inner side of the first board edge microstrip 21 and the second board edge microstrip 24, and extends into the clearance area 11; the resonant microstrip 25 is located on the side between the side where the second board edge microstrip 24 is located and the side where the feeding microstrip 22 is located, and extends into the clearance area 11. In the figure, the clearance area 11 is rectangular, which includes a first long side, a second long side, a first wide side and a second wide side, the first board edge microstrip 21 and the second board edge microstrip 24 are located at the first long side, and the first board edge microstrip 21 is connected to the first wide side, the second board edge microstrip 24 is connected to the second wide side, the resonant microstrip 25 is located and connected to the second wide side, and the feeding microstrip 22 is arranged at the second long side. The ends of the second edge microstrip 24 and the feeding microstrip 22 are respectively arranged toward the ends of the first edge microstrip 21, and the ends of the resonant microstrip 25 are arranged toward the ends of the feeding microstrip 22. The feeding microstrip 22 and the resonant microstrip 25 are in a straight line or a bent shape. For example, the distance a1 between the end of the feeding microstrip 22 and the end of the first edge microstrip 21 ranges from 0.2 mm to 0.4 mm, the distance a2 between the end of the second edge microstrip 24 and the end of the first edge microstrip 21 ranges from 0.8 mm to 1.2 mm, the distance a3 between the end of the resonant microstrip 25 and the end of the feeding microstrip 22 ranges from 0.5 mm to 0.9 mm, and the distance a4 between the end of the resonant microstrip 25 and the end of the second edge microstrip 24 ranges from 0.3 mm to 0.7 mm.
[0049] like Figure 7 As shown, it is the S parameter of the antenna port of the antenna structure, which is given by Figure 7 It can be seen that the resonant center working points of the antenna structure are at 2.42 GHz, 5.95 GHz and 7.16 GHz, and at 2.42 GHz, S11<-25dB, at 5.95 GHz, S11<-12dB, and at 7.16 GHz, S11<-7dB. The antenna structure has good return loss.
[0050] like Fig.10 As shown, it is the antenna efficiency diagram of the antenna structure, which is Fig.10 It can be seen that the antenna efficiency of this antenna structure is greater than -0.5dB in the 2.42GHz and 5.95GHz frequency bands, and greater than -1.2dB in the 7.16GHz frequency band, and the antenna radiation performance is excellent.
[0051] The utility model embodiment also provides a mainboard, including the above antenna structure. The utility model embodiment also provides an electronic product, including the above antenna structure or the above mainboard. The antenna is integrated on the circuit board 1, that is, a clearance area 11 is set at the edge of the circuit board 1 (PCB board), and the circuit board 1 in this area is not provided with circuit components. The feed microstrip 22, the board edge microstrip and the resonant microstrip 25 of the antenna are arranged in this area, and the radio frequency signal is coupled to the feed microstrip 22 and fed into the board edge microstrip and the resonant microstrip 25 to achieve antenna performance.
[0052] The technical solution of the utility model arranges the antenna structure on the mainboard, which not only reduces costs but also saves space. When applied to electronic products, there is no need to reserve a separate antenna space inside the product, thereby improving the integration of the entire product.
[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.
[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0055] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.
Claims
1. An antenna structure, characterized in that: It comprises a circuit board (1) and an antenna assembly (2); A clearance area (11) is provided on one side of the surface of the circuit board (1), and the antenna component (2) is located in the clearance area (11) and is coplanar with the circuit board (1); The antenna assembly (2) comprises a first board edge microstrip (21) and a feeding microstrip (22); the first board edge microstrip (21) is connected to a grounding electrode of the circuit board (1), and the feeding microstrip (22) is connected to the circuit board (1) via a feeding port (23); a set distance is provided between the end of the feeding microstrip (22) and the end of the first board edge microstrip (21); and a radio frequency signal is coupled and fed into the first board edge microstrip (21) via the feeding microstrip (22).
2. The antenna structure according to claim 1, characterized in that: The first board edge microstrip (21) is located at the edge of the clearance area (11) and the circuit board (1), and extends along the edge of the clearance area (11) and the circuit board (1); The feeding microstrip (22) is located on the inner side of the first board edge microstrip (21) and extends into the clearance area (11).
3. The antenna structure according to claim 2, characterized in that: The antenna assembly (2) further comprises a second board edge microstrip (24), the second board edge microstrip (24) being arranged at the edge of the clearance area (11) and the circuit board (1), and extending along the edge of the clearance area (11) and the circuit board (1) towards the first board edge microstrip (21); The second board edge microstrip (24) is connected to the grounding electrode of the circuit board (1), a set distance is provided between the end of the second board edge microstrip (24) and the end of the first board edge microstrip (21), and a radio frequency signal is coupled and fed into the first board edge microstrip (21) and the second board edge microstrip (24) through the feeding microstrip (22).
4. The antenna structure according to claim 3, characterized in that: The antenna assembly (2) further comprises a resonant microstrip (25), wherein the resonant microstrip (25) is located on a side between a side where the second board edge microstrip (24) is located and a side where the feeding microstrip (22) is located, and extends into the clearance area (11); The resonant microstrip (25) is connected to a grounding electrode of the circuit board (1); a set distance is provided between an end of the resonant microstrip (25) and an end of the feeding microstrip (22); and a radio frequency signal is coupled through the feeding microstrip (22) and fed into the first board edge microstrip (21), the second board edge microstrip (24), and the resonant microstrip (25).
5. The antenna structure according to claim 1, characterized in that: The circuit board (1) further comprises a matching circuit (12); The feeding microstrip (22) is connected to the matching circuit (12) of the circuit board (1) via the feeding port (23).
6. The antenna structure according to claim 4, characterized in that: The feeding microstrip (22) and the resonant microstrip (25) have set lengths, and the feeding microstrip (22) and the resonant microstrip (25) are in a straight line shape or a bent shape.
7. The antenna structure according to claim 4, characterized in that: The clearance area (11) is rectangular; The length of the clearance area (11) ranges from 14 mm to 18 mm, and the width of the clearance area (11) ranges from 2 mm to 6 mm.
8. The antenna structure according to claim 7, characterized in that: The distance between the end of the feeding microstrip (22) and the end of the first board edge microstrip (21) ranges from 0.2 mm to 0.4 mm; The distance between the end of the second plate edge microstrip (24) and the end of the first plate edge microstrip (21) ranges from 0.8 mm to 1.2 mm; The distance between the end of the resonant microstrip (25) and the end of the feeding microstrip (22) ranges from 0.5 mm to 0.9 mm, and the distance between the end of the resonant microstrip (25) and the end of the second board edge microstrip (24) ranges from 0.3 mm to 0.7 mm.
9. A motherboard, characterized in that: The invention comprises the antenna structure as claimed in any one of claims 1 to 8.
10. An electronic product, characterized in that: The invention comprises the antenna structure as claimed in any one of claims 1 to 8 or the main board as claimed in claim 9.