An integrated multi-band antenna PCB structure

Abstract

The utility model discloses an integrated multi -band antenna PCB board structure, including the PCB board, the PCB board is equipped with four independent antenna units, and four antenna units are equipped with predetermined interval, every antenna unit includes two radiation patch and a feed point, the radiation patch is long strip rectangle shape distribution, and the middle part of radiation patch is equipped with the structure of cutting angle. Through the reasonable setting polarization antenna unit's working frequency and the feed mode in the antenna structure unit, has improved the polarization isolation of each antenna unit in the antenna structure unit, has avoided the signal crosstalk, has improved the performance and communication stability of antenna, has realized the effective integration of multi -band antenna while keeping the low profile characteristic.

Description

Technical Field

[0001] This utility model relates to the field of wireless communication structures, and in particular to an integrated multi-band antenna PCB board structure. Background Technology

[0002] As wireless audio devices (such as TWS earphones and wireless headphones) become increasingly feature-rich, they also require support for more and more wireless communication frequency bands, such as 2.4GHz / 5GHz, WiFi, and Bluetooth.

[0003] Traditional solutions typically employ multiple independent antennas or densely arranged antenna elements to achieve multi-band coverage. However, this leads to problems such as large internal space requirements, poor isolation between antennas, and severe signal interference. Especially in compact audio equipment, integrating multiple high-performance antennas within a limited space and ensuring their operational stability has become a significant technical challenge.

[0004] Therefore, existing technologies suffer from drawbacks such as low antenna module integration, insufficient isolation, susceptibility to signal crosstalk, and difficulty in achieving stable multi-band communication in miniaturized devices. Utility Model Content

[0005] The main objective of this invention is to propose an integrated multi-band antenna PCB structure to solve the aforementioned technical problems.

[0006] To achieve the above objectives, this utility model proposes an integrated multi-band antenna PCB board structure, comprising: The PCB board has four independent antenna units, and the four antenna units have a predetermined spacing. Each antenna element includes two radiating patches and one feed point; The radiating patches are arranged in a long rectangular shape, and the center of the radiating patch has a chamfered structure.

[0007] By rationally setting the operating frequency and feeding mode of the polarized antenna elements in the antenna structure unit, the polarization isolation of each antenna element in the antenna structure unit is improved, signal crosstalk is avoided, and the performance and communication stability of the antenna are improved. While maintaining low profile characteristics, the effective integration of multi-band antennas is achieved. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the present invention.

[0009] In the picture, 1. PCB board; 2. Extended corner structure; 3. Radial patch; 30° chamfer. Detailed Implementation

[0010] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0011] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0012] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0013] like Figure 1 As shown, an integrated multi-band antenna PCB board structure includes: The PCB board has four independent antenna units, and the four antenna units have a predetermined spacing. Each antenna element includes two radiating patches and one feed point; The radiating patches are arranged in a long rectangular shape, and the center of the radiating patch has a chamfered structure.

[0014] By rationally setting the operating frequency and feeding mode of the polarized antenna elements in the antenna structure unit, the polarization isolation of each antenna element in the antenna structure unit is improved, signal crosstalk is avoided, and the performance and communication stability of the antenna are improved. While maintaining low profile characteristics, the effective integration of multi-band antennas is achieved.

[0015] Specifically, each antenna element is configured to operate in two different communication frequency bands. (This improves the utilization rate of spectrum resources while maintaining the miniaturization of the antenna structure elements.)

[0016] In this embodiment of the invention, the chamfered structure of the radiating patch is inclined and located between two radiating patches. The chamfered angle is introduced into the radiating patch in the antenna unit as a perturbation unit.

[0017] Specifically, the four antenna units are arranged in a four-corner layout on the PCB board.

[0018] In this embodiment of the invention, the shape of the chamfered structure is a triangle or a rectangle.

[0019] Specifically, the integrated multi-band antenna PCB structure is characterized in that the radiating antennas of the four antenna elements are distributed circumferentially along the axis of the PCB and are horizontally polarized.

[0020] This enables the rotation setting to achieve horizontal polarization, which maximizes the spacing between adjacent radiating antennas, and can be understood as avoiding tangent or parallel bands. Simultaneously, degenerate modes are generated in the antenna element, forming two or more linearly polarized electric fields with equal amplitudes, causing the antenna element to radiate horizontally polarized waves. This utilizes the circular polarization performance to improve the performance and reliability of the antenna element.

[0021] In this embodiment of the utility model, the PCB board is further provided with a protruding extension angle structure, and the extension angle is provided with one of the antenna units.

[0022] Specifically, the four antenna units are a 2.4G Bluetooth antenna (A), a 2.4G WIFI antenna (B), a UFH (C), and a UFH (D).

[0023] In this embodiment of the utility model, the integrated multi-band antenna PCB board structure is characterized in that the UFH(D) is located in the extended corner structure, and the UFH(C) and UFH(D) are located at opposite corners of the PCB board. The 2.4G Bluetooth antenna (A) and the 2.4G WIFI antenna (B) are located diagonally opposite each other.

[0024] The feed point is often located at the edge or diagonal of the patch. Circular polarization or impedance matching can be achieved by adjusting the patch shape (such as chamfering or slotting).

[0025] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An integrated multi-band antenna PCB board structure, characterized in that, include: The PCB board has four independent antenna units, and the four antenna units have a predetermined spacing. Each antenna element includes two radiating patches and one feed point; The radiating patches are arranged in a long rectangular shape, and the center of the radiating patches has a chamfered structure.

2. The integrated multi-band antenna PCB board structure according to claim 1, characterized in that, Each antenna element is configured to operate in two different communication frequency bands.

3. The integrated multi-band antenna PCB board structure according to claim 2, characterized in that, The beveled structure of the radiating patch is inclined and located between two radiating patches.

4. The integrated multi-band antenna PCB board structure according to claim 2, characterized in that, The four antenna units are arranged in a four-corner layout on the PCB board.

5. The integrated multi-band antenna PCB structure according to claim 2, characterized in that, The chamfered structure is triangular or rectangular in shape.

6. The integrated multi-band antenna PCB structure according to claim 2, characterized in that, The radiating antennas of the four antenna elements are distributed circumferentially along the axis of the PCB board at the outermost periphery and are horizontally polarized.

7. The integrated multi-band antenna PCB board structure according to claim 2, characterized in that, The PCB board also has a protruding extension angle structure, and the extension angle has one of the antenna elements.

8. The integrated multi-band antenna PCB board structure according to claim 7, characterized in that, The four antenna units are a 2.4G Bluetooth antenna (A), a 2.4G WIFI antenna (B), a UFH antenna (C), and a UFH antenna (D).

9. The integrated multi-band antenna PCB structure according to claim 7, characterized in that, The UFH(D) is located in the extended corner structure, and the UFH(C) and UFH(D) are located at opposite corners of the PCB board; The 2.4G Bluetooth antenna (A) and the 2.4G WIFI antenna (B) are located diagonally opposite each other.

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