PCB on-board antenna

Abstract

The utility model belongs to the technical field of antennas, and particularly relates to a PCB on-board antenna, which comprises an antenna body positioned on a PCB, the antenna body comprises a radiation unit provided with a first rectangular section, a second rectangular section, a third rectangular section and a fourth rectangular section, and the first rectangular section and the second rectangular section are respectively and vertically connected with the fourth rectangular section to form an inverted F-shaped structure; the third rectangular section and the fourth rectangular section are vertically connected and are positioned on the sides of the first rectangular section and the second rectangular section; the feeding point is located on the second rectangular section, one end of the feeding point is connected with a feeder line of the PCB, and the other end of the feeding point is connected with the radiation unit; and the grounding point is located on the first rectangular section, one end of the grounding point is connected with the ground of the PCB, and the other end of the grounding point is connected with the radiation unit. The 2.4 G ISM antenna is suitable for 2.4 G ISM frequency bands, and can obtain better performance, which is embodied in obtaining higher radiation efficiency and gain.

Description

Technical Field

[0001] The utility model belongs to the technical field of antennas, and in particular relates to a PCB board-mounted antenna. Background Art

[0002] Some gaming peripherals that use wireless communication, such as game controllers, Bluetooth keyboards, and VR devices, utilize antennas. These products generally operate within the 2.4GHz frequency band, using Bluetooth, Wi-Fi, and proprietary 2.4G protocols. Furthermore, as more and more products utilize the 2.4GHz band for communication, the space becomes increasingly crowded, and interference between them increases. This places higher demands on the wireless performance of these products to achieve optimal performance and longer communication distances.

[0003] To save costs, typical consumer products often use existing PCB-mounted antennas, such as single-ended antennas, inverted-F antennas, and serpentine inverted-F antennas. However, these antennas typically have low radiation efficiency, typically around 30%, and low gain, typically below 0dBi. Furthermore, antenna performance is significantly affected by the environment in which they operate; poor conditions can significantly reduce performance. Consequently, the same antenna can perform differently in different environments. Therefore, antennas should be designed or selected based on the specific environment, and optimal performance requires appropriate tuning and matching. Utility Model Content

[0004] The utility model aims to provide a PCB board-mounted antenna to solve the technical problem that the existing PCB board-mounted antenna has low radiation efficiency and relatively low gain and is not suitable for use in gaming peripherals.

[0005] In order to solve the aforementioned technical problems, the first aspect of the present invention provides a PCB board-mounted antenna, wherein the PCB board-mounted antenna includes an antenna body located on a PCB board, and the antenna body includes:

[0006] A radiation unit, the radiation unit comprising a first rectangular segment, a second rectangular segment, a third rectangular segment, and a fourth rectangular segment, wherein the first rectangular segment and the second rectangular segment are respectively connected vertically with the fourth rectangular segment to form an inverted F-shaped structure, and the third rectangular segment is connected vertically with the fourth rectangular segment and is located on the sides of the first rectangular segment and the second rectangular segment;

[0007] A feeding point, the feeding point being located on the second rectangular segment, one end of the feeding point being connected to a feeder line of the PCB board, and the other end of the feeding point being connected to the radiating unit as an energy incident port;

[0008] A grounding point, the grounding point is located on the first rectangular segment, one end of the grounding point is connected to the ground of the PCB board, and the other end of the grounding point is connected to the radiation unit.

[0009] Optionally, in the PCB onboard antenna as described above, the first rectangular segment is located at one end of the fourth rectangular segment, and the second rectangular segment is located between the first rectangular segment and the third rectangular segment.

[0010] Optionally, in the PCB onboard antenna as described above, the distance between the second rectangular segment and the first rectangular segment is the same as the distance between the second rectangular segment and the third rectangular segment.

[0011] Optionally, in the PCB onboard antenna as described above, the first rectangular segment, the second rectangular segment, and the third rectangular segment are all connected to the fourth rectangular segment at their width sides.

[0012] Optionally, in the PCB board-mounted antenna as described above, the width of the first rectangular segment is smaller than the width of the second rectangular segment, the width of the second rectangular segment is smaller than the width of the third rectangular segment, and the length of the fourth rectangular segment is greater than the sum of the widths of the first rectangular segment to the third rectangular segment.

[0013] Optionally, in the PCB onboard antenna as described above, the length of the first rectangular segment is the same as the length of the second rectangular segment.

[0014] Optionally, in the PCB onboard antenna as described above, the length of the third rectangular segment is smaller than the length of the first rectangular segment and the length of the second rectangular segment.

[0015] Optionally, in the aforementioned PCB onboard antenna, the width of the first rectangular segment is L1, and the distance from the first rectangular segment to the fourth rectangular segment in the length direction is L5, then:

[0016] L1=0.9mm, L5=8.25mm.

[0017] Optionally, in the aforementioned PCB onboard antenna, the width of the second rectangular segment is L2, and the distance from the second rectangular segment to the fourth rectangular segment in the length direction is L5', then:

[0018] L2=1mm, L5'=8.25mm.

[0019] Optionally, in the aforementioned PCB onboard antenna, the width of the third rectangular segment is L3, and the length of the third rectangular segment is L4, then:

[0020] L3=4.07mm, L4=5.25mm.

[0021] Optionally, in the aforementioned PCB onboard antenna, the length of the fourth rectangular segment is L6, and the width of the fourth rectangular segment is L7. Then:

[0022] L6 = 13 mm to 17 mm, L7 = 1.5 mm, preferably L6 = 15.17 mm.

[0023] Optionally, in the PCB board-mounted antenna as described above, the antenna body is a PCB board-mounted copper-clad antenna.

[0024] Optionally, in the aforementioned PCB-mounted antenna, the antenna body is located in a clearance area of ​​the PCB board, the clearance area has a length of L11 and a width of L9, the distance from the antenna body to the upper edge of the PCB board is L8, the length of the fourth rectangular segment is L6, and the distance from the first rectangular segment to the fourth rectangular segment in the longitudinal direction is L5. Then:

[0025] L11 ≥ L6 + 20 mm, preferably L11 = 52.9 mm;

[0026] L9=L5+L8, preferably L9=8.89 mm.

[0027] Preferably, there is clear space in the direction pointed by the antenna body.

[0028] Optionally, in the PCB board-mounted antenna as described above, the distance from the antenna body to the upper edge of the PCB board is L8, then L8 = 0.35 mm to 0.8 mm, preferably L8 = 0.64 mm.

[0029] Optionally, in the PCB board-mounted antenna as described above, the distance from the edge of the grounding point of the antenna body away from the feeding point side to the reference ground of the PCB board side edge is L10, then L10 = 2mm ~ 10mm, preferably L10 = 2.5mm.

[0030] The positive progress effect of this utility model is:

[0031] 1. The utility model is applicable to the 2.4G ISM frequency band and can achieve better performance, which is reflected in the ability to obtain higher radiation efficiency and gain.

[0032] 2. The utility model is a variant structure of the inverted F-type antenna, designed in combination with the PCB board shape and the environment in which it is located. By adding the third rectangular segment to reduce the length of the fourth rectangular segment, the antenna occupies a smaller area, can better adapt to the corresponding products, and obtain better performance.

[0033] 3. The radiating unit uses a wider line width and has a wider bandwidth. Under the condition that the return loss is less than -10dB, the bandwidth reaches 150MHz.

[0034] 4. By changing the structure of the inverted F antenna, the radiation efficiency of the antenna is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The disclosure of the present invention will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the drawings:

[0036] Figure 1 A structural diagram of the utility model;

[0037] Figure 2 for Figure 1 A parameter-limited schematic diagram;

[0038] Figure 3 This is a schematic diagram of an application of the utility model;

[0039] Figure 4 for Figure 3 A partial enlarged view of

[0040] Figure 5 This is a schematic diagram of return loss data tested by a vector network analyzer in the utility model;

[0041] Figure 6 The figure is a schematic diagram of standing wave ratio data tested by a vector network analyzer in the utility model. DETAILED DESCRIPTION

[0042] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0043] It should be noted that, unless there is any conflict, the following embodiments and features therein may be combined with each other.

[0044] In the description of the present invention, it should be noted that directional words such as the terms "outside", "middle", "inside", "outside", etc., which indicate directions and positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly refer to one or more of these features. In the description of this utility model, "several" and "a number" mean two or more, unless otherwise specifically defined.

[0046] Reference Figures 1 to 4 The present invention provides a PCB-mounted antenna, including an antenna body 1 located on a PCB 2. The antenna body 1 includes a radiating element 10, a feeding point 20, and a grounding point 30. The radiating element 10 includes a first rectangular segment 11, a second rectangular segment 12, a third rectangular segment 13, and a fourth rectangular segment 14.

[0047] The first rectangular segment 11 and the second rectangular segment 12 are respectively connected vertically with the fourth rectangular segment 14 to form an inverted F-shaped structure. The third rectangular segment 13 is connected vertically with the fourth rectangular segment 14 and is located beside the first rectangular segment 11 and the second rectangular segment 12.

[0048] The feeding point 20 is located on the second rectangular segment 12 . One end of the feeding point 20 is connected to the feed line of the PCB board 2 , and the other end of the feeding point 20 is connected to the radiation unit 10 as an energy incident port.

[0049] The grounding point 30 is located on the first rectangular segment 11 . One end of the grounding point 30 is connected to the ground of the PCB board 2 , and the other end of the grounding point 30 is connected to the radiation unit 10 .

[0050] In some embodiments, the first rectangular segment 11 is located at one end of the fourth rectangular segment 14 , and the second rectangular segment 12 is located between the first rectangular segment 11 and the third rectangular segment 13 .

[0051] In some embodiments, the distance between the second rectangular segment 12 and the first rectangular segment 11 is the same as the distance between the second rectangular segment 12 and the third rectangular segment 13 .

[0052] In some embodiments, the first rectangular segment 11 , the second rectangular segment 12 , and the third rectangular segment 13 are all connected to the fourth rectangular segment 14 at their width sides.

[0053] In some embodiments, the width of the first rectangular segment 11 is smaller than the width of the second rectangular segment 12 , the width of the second rectangular segment 12 is smaller than the width of the third rectangular segment 13 , and the length of the fourth rectangular segment 14 is greater than the sum of the widths of the first to third rectangular segments 11 , 13 .

[0054] In some embodiments, the length of the first rectangular segment 11 and the length of the second rectangular segment 12 are the same.

[0055] In some embodiments, the length of the third rectangular segment 13 is smaller than that of the first rectangular segment, and the length of the third rectangular segment 13 is smaller than that of the second rectangular segment 12 .

[0056] In some embodiments, reference Figure 2 , the width of the first rectangular segment 11 is L1, and the distance from the first rectangular segment 11 to the fourth rectangular segment 14 in the longitudinal direction is L5, then:

[0057] L1=0.9mm, L5=8.25mm.

[0058] In some embodiments, the width of the second rectangular segment 12 is L2, and the distance from the second rectangular segment 12 to the fourth rectangular segment 14 in the length direction is L5', then:

[0059] L2=1mm, L5'=8.25mm.

[0060] Reference Figure 2 , preferably L5'=L5.

[0061] In some embodiments, reference Figure 2 , the width of the third rectangular segment 13 is L3, and the length of the third rectangular segment 13 is L4, then:

[0062] L3=4.07mm, L4=5.25mm.

[0063] In some embodiments, reference Figure 2 , the length of the fourth rectangular segment 14 is L6, and the width of the fourth rectangular segment 14 is L7, then:

[0064] L6=13mm~17mm, L7=1.5mm.

[0065] Preferably L6=15.17 mm.

[0066] The length of L6 can be adjusted according to the environment in which the antenna body 1 is located, so that the resonant frequency of the antenna body 1 is between 2.4G and 2.5G.

[0067] In some embodiments, the antenna body 1 is a copper-clad antenna on a PCB board 2 .

[0068] In some embodiments, reference Figure 3 and Figure 4 The antenna body 1 is located in the clearance area 40 of the PCB board 2. The length of the clearance area 40 is L11, the width is L9, and the distance from the antenna body 1 to the upper edge of the PCB board 2 is L8. Then:

[0069] L11≥L6+20mm, preferably L11=52.9mm.

[0070] L9=L5+L8, preferably L9=8.89 mm.

[0071] It is preferred that all directions in the direction pointed by the antenna body 1 are clear.

[0072] In some embodiments, reference Figure 3 and Figure 4 , L8=0.35mm~0.8mm, preferably L8=0.64mm.

[0073] In some embodiments, reference Figure 3 and Figure 4 The distance from the edge of the grounding point 30 of the antenna body 1 away from the feeding point 20 to the reference ground of the edge of the PCB board 2 is L10, then L10 = 2mm ~ 10mm, preferably L10 = 2.5mm.

[0074] Example 1:

[0075] The antenna body 1 of this embodiment is suitable for the 2.4 GHz ISM frequency band.

[0076] The antenna body 1 of this embodiment adopts Figure 2 The dimensions are as follows:

[0077] L1=0.9mm, L2=1mm, L3=4.07mm, L4=5.25mm, L5=8.25mm, L6=15.17mm, L7=1.5mm.

[0078] Considering the shape of the antenna body 1 and the layout of the components around the antenna, the position relationship of the antenna body 1 on the PCB board 2 in this embodiment is as follows: Figure 4 As shown, and the dimensions are as follows:

[0079] L8=0.64mm, L9=8.89mm, L10=2.5mm, L11=52.9mm.

[0080] The antenna body 1 of this embodiment is tested by a vector network analyzer to obtain the return loss data, as shown in FIG. Figure 5 As shown, it can be concluded that under the condition that the return loss is less than -10dBm, the antenna bandwidth can reach 150MHz.

[0081] The antenna body 1 of this embodiment is tested by a vector network analyzer to obtain the standing wave ratio data, as shown in FIG. Figure 6 As shown, it can be concluded that in the 2.4G ISM band, the standing wave ratio of the antenna is between 1.1 and 1.6, which meets the requirement that the standing wave ratio is less than 2.

[0082] The antenna body 1 of this embodiment was tested in a 3-meter darkroom, and the antenna efficiency and gain data were shown in the following table.

[0083]

[0084]

[0085] As can be seen from the table above, within the 2.4GHz ISM band, the antenna's efficiency ranges from 50% to 69%, approximately twice that of typical onboard antennas. The maximum gain reaches 1.6dBi, also higher than typical onboard antennas.

[0086] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. A person skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the present invention shall be protected within the scope of the appended claims.

Claims

1. A PCB board-mounted antenna, comprising an antenna body located on a PCB board, characterized in that: The antenna body comprises: A radiation unit, the radiation unit comprising a first rectangular segment, a second rectangular segment, a third rectangular segment, and a fourth rectangular segment, wherein the first rectangular segment and the second rectangular segment are respectively connected vertically with the fourth rectangular segment to form an inverted F-shaped structure, and the third rectangular segment is connected vertically with the fourth rectangular segment and is located on the sides of the first rectangular segment and the second rectangular segment; A feeding point, the feeding point being located on the second rectangular segment, one end of the feeding point being connected to a feeder line of the PCB board, and the other end of the feeding point being connected to the radiating unit as an energy incident port; A grounding point, the grounding point is located on the first rectangular segment, one end of the grounding point is connected to the ground of the PCB board, and the other end of the grounding point is connected to the radiation unit.

2. The PCB board-mounted antenna according to claim 1, wherein: The first rectangular segment is located at one end of the fourth rectangular segment, and the second rectangular segment is located between the first rectangular segment and the third rectangular segment.

3. The PCB board-mounted antenna according to claim 2, wherein: The distance between the second rectangular segment and the first rectangular segment is the same as the distance between the second rectangular segment and the third rectangular segment.

4. The PCB board-mounted antenna according to claim 1, wherein: The first rectangular segment, the second rectangular segment, and the third rectangular segment are all connected to the fourth rectangular segment at their width sides.

5. The PCB board-mounted antenna according to claim 4, wherein: The width of the first rectangular segment is smaller than the width of the second rectangular segment, the width of the second rectangular segment is smaller than the width of the third rectangular segment, and the length of the fourth rectangular segment is greater than the sum of the widths of the first to third rectangular segments; and / or, the length of the first rectangular segment is the same as the length of the second rectangular segment; And / or, the length of the third rectangular segment is smaller than the length of the first rectangular segment and the length of the second rectangular segment.

6. The PCB board-mounted antenna according to claim 5, wherein: The width of the first rectangular segment is L1, and the distance from the first rectangular segment to the fourth rectangular segment in the length direction is L5, then: L1 = 0.9 mm, L5 = 8.25 mm; And / or, the width of the second rectangular segment is L2, and the distance from the second rectangular segment to the fourth rectangular segment in the length direction is L5', then: L2 = 1 mm, L5' = 8.25 mm; And / or, the width of the third rectangular segment is L3, and the length of the third rectangular segment is L4, then: L3 = 4.07 mm, L4 = 5.25 mm; And / or, the length of the fourth rectangular segment is L6, and the width of the fourth rectangular segment is L7, then: L6 = 13 mm to 17 mm, L7 = 1.5 mm.

7. The PCB board-mounted antenna according to claim 6, wherein: L6=15.17mm.

8. The PCB board-mounted antenna according to claim 1, wherein: The antenna body is a PCB-mounted copper-clad antenna.

9. The PCB board-mounted antenna according to any one of claims 1 to 8, wherein: The antenna body is located in a clearance area of ​​the PCB board. The clearance area has a length of L11 and a width of L9. The distance from the antenna body to the upper edge of the PCB board is L8. The length of the fourth rectangular segment is L6. The distance from the first rectangular segment to the fourth rectangular segment in the longitudinal direction is L5. Therefore: L11≥L6+20mm; L9=L5+L8.

10. The PCB board-mounted antenna according to claim 9, wherein: L11=52.9mm, L9=8.89mm, and there is complete clearance in the direction indicated by the antenna body.

11. The PCB board-mounted antenna according to claim 9, wherein: L8=0.35mm~0.8mm.

12. The PCB board-mounted antenna according to claim 9, wherein: L8=0.64mm.

13. The PCB board-mounted antenna according to claim 9, wherein: The distance from the edge of the grounding point of the antenna body away from the feeding point to the reference ground of the edge of the PCB board side is L10, and L10=2mm~10mm.

14. The PCB board-mounted antenna according to claim 13, wherein: L10=2.5mm.

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