Anti-interference bluetooth chip antenna

Abstract

This utility model relates to the field of Bluetooth antennas, and more particularly to an anti-interference Bluetooth chip antenna, comprising a base plate, a lifting plate, an intelligent impedance matching module, an interference canceller, and a low-noise amplifier. The base plate has lifting plates on its four upper sides, and each lifting plate has a metal mesh inside. An interference canceller is located on the upper part of the base plate, and a low-noise amplifier is located on one side of the interference canceller. The intelligent impedance matching module is located at each of the four corners of the upper part of the base plate. This device utilizes the lifting plate with a lifting effect, combined with internal electromagnetic wave protection devices, intelligent impedance modules, interference cancellation circuits, and low-noise amplifiers, to solve the problem that existing Bluetooth antennas lack multi-functional electromagnetic interference stabilization capabilities, making them susceptible to interference and unable to operate stably.

Description

Technical Field

[0001] This utility model relates to the field of Bluetooth antennas, and more particularly to an anti-interference Bluetooth chip antenna. Background Technology

[0002] The Bluetooth antenna is a key component in Bluetooth devices used for transmitting and receiving wireless signals, primarily achieving data transmission through electromagnetic radiation. It typically employs a miniaturized design (such as ceramic antennas or PCB antennas) and is integrated within the Bluetooth module or device. It can efficiently transmit and receive signals in the 2.4GHz frequency band, ensuring stable communication connections between Bluetooth devices. Widely used in headphones, speakers, smart wearables, and other devices, it is one of the core components for achieving short-range wireless communication.

[0003] A search revealed patent publication number CN222395038U, which discloses an antenna element and its electronic device, belonging to the field of communication technology. The antenna element includes a substrate and a metal layer. The substrate extends along a first direction, and the metal layer is located on one side of the substrate, containing a ground signal line, a Bluetooth antenna, and first and second Wi-Fi antennas. Isolation stubs are integrated into the metal layer, significantly improving the isolation between the Bluetooth antenna and the Wi-Fi antenna by connecting to the ground signal line. This design effectively reduces multi-band signal interference without affecting the performance of the Bluetooth antenna, making it particularly suitable for scenarios where multiple wireless communication modules coexist in smart terminals.

[0004] While existing technologies can achieve certain Bluetooth antenna performance, they suffer from a drawback: they lack multi-functional electromagnetic interference stabilization capabilities, making them susceptible to interference and unable to operate stably. Therefore, we propose an anti-interference Bluetooth chip antenna that solves this problem. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing an anti-interference Bluetooth chip antenna.

[0006] The technical solution of this utility model is as follows: an anti-interference Bluetooth chip antenna, comprising a base plate, a lifting plate, an intelligent impedance matching module, an interference canceller, and a low-noise amplifier, characterized in that: the base plate is provided with lifting plates on four sides at the upper end, the lifting plates are provided with metal mesh inside, the base plate is provided with an interference canceller at the upper end, the interference canceller is provided with a low-noise amplifier on one side, and the base plate is provided with an intelligent impedance matching module at the four corners at the upper end.

[0007] During operation, this device utilizes a motor to drive a lifting plate up and down. The lifting plate contains a metal mesh, whose excellent conductivity reflects high-frequency interference signals, preventing these electromagnetic waves from penetrating the antenna. The electromagnetic isolation strip is a triangular design made of a soft magnetic material with high permeability. Its main function is to attract and guide stray electromagnetic signals. When external electromagnetic waves approach the antenna radiating element, the ring-shaped electromagnetic isolation strip attracts these stray signals and guides them away from the core radiation area of ​​the antenna, thus reducing interference from external electromagnetic signals on the antenna's normal operation. The intelligent impedance matching module monitors changes in the antenna's input impedance and surrounding electromagnetic environment parameters in real time. Through a built-in adaptive algorithm, it dynamically adjusts the adjustable capacitors and inductors in the matching network according to actual signal transmission requirements and interference conditions, ensuring the antenna maintains optimal impedance matching across the entire operating frequency band. When encountering sudden strong interference, the module will quickly trigger a dynamic tuning mechanism, automatically switching to a backup frequency operating point or adjusting the antenna's radiation pattern to avoid areas with high interference intensity. The integrated design of low-noise amplification and interference cancellation highly integrates and coordinates the circuitry of the low-noise amplifier (LMA) and the temporal part of the interference canceller. A bandpass filter preprocessing unit is set at the front end of the LNA, which can pre-filter out most strong interference signals outside the frequency band, reducing the processing pressure of subsequent circuits. The interference cancellation circuit adopts time-domain cancellation technology based on adaptive filters. By collecting interference samples in the antenna received signal, it generates a cancellation signal with the same amplitude and opposite phase as the interference signal, canceling the interference in real time before signal amplification, which greatly improves the signal processing capability and communication quality of the Bluetooth chip in strong interference environments.

[0008] Preferably, the lifting plate has an installation groove three inside, and the metal mesh is inserted into the groove three from the top, which facilitates the installation and disassembly of the metal mesh, makes it easy to maintain and replace, and ensures that it continues to effectively perform its electromagnetic shielding function.

[0009] Preferably, the outer side of the lifting plate is provided with an electromagnetic isolation strip. The electromagnetic isolation strip is triangular in design and is made of a soft magnetic material with high magnetic permeability. It can efficiently adsorb and guide external stray electromagnetic signals, reduce interference to the normal operation of the antenna, and improve the anti-interference performance of the device.

[0010] Preferably, the upper end of the base plate is provided with a main control chip, and a series of electronic control components for the Bluetooth chip are surrounding the main control chip. The main control chip centrally controls and manages the Bluetooth chip and electronic control components, optimizes the signal processing flow, and ensures the stable and efficient operation of the Bluetooth communication function.

[0011] Preferably, the upper end of the base plate is provided with a first mounting groove, and the first mounting groove is provided with a second mounting groove on one side. A gear is rotatably installed inside the first mounting groove, and a rack is provided on one side of the lifting plate. The gear meshes with the rack.

[0012] Preferably, the second mounting slot is equipped with a motor, the output shaft of which is fixedly connected to the rotation center of one side of the gear. The motor provides a power source for the gear and rack transmission, which can accurately control the speed and direction of the motor, thereby accurately controlling the lifting speed and height of the lifting plate, and meeting the needs of the lifting plate position in different usage scenarios.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] I. The metal mesh in this utility model can reflect high-frequency interference signals, ensuring the purity of the signal inside the antenna; the interference canceller and the low-noise amplifier work together to improve the signal processing and communication quality under strong interference environment; the intelligent impedance matching module can dynamically adjust to keep the antenna in the best working state, and can also switch the frequency or adjust the radiation pattern when there is interference.

[0015] II. Based on the first beneficial effect, this device achieves significant performance improvements through the ingenious design and coordinated operation of its components. The lifting plate, combined with a metal mesh and electromagnetic isolation strip, effectively resists external electromagnetic interference; the intelligent impedance matching module dynamically optimizes the antenna's operating state; the integrated design of low-noise amplification and interference cancellation enhances signal processing capabilities; the main control chip enables efficient management of electronic control components; and the transmission structure composed of a gear rack and motor precisely controls the lifting plate's movement. The overall device greatly improves the communication stability and reliability of the Bluetooth chip in complex electromagnetic environments, demonstrating high practicality.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of structure A in the middle;

[0020] Figure 4 This is a schematic diagram of the metal mesh of this utility model.

[0021] Figure label:

[0022] 1. Base plate; 2. Main control chip; 3. Intelligent impedance matching module; 4. Lifting plate; 5. Interference canceller; 6. Low noise amplifier; 7. Electromagnetic isolation strip; 8. Gear; 9. Mounting slot one; 10. Motor; 11. Mounting slot two; 12. Mounting slot three; 13. Metal mesh; 14. Rack. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] Example 1

[0028] Please see Figures 1-4 As shown, this embodiment is an anti-interference Bluetooth chip antenna, including a base plate 1, a lifting plate 4, an intelligent impedance matching module 3, an interference canceller 5, and a low noise amplifier 6. The base plate 1 has lifting plates 4 on all four sides of its upper end, and a metal mesh 13 is provided inside the lifting plate 4. The base plate 1 has an interference canceller 5 on its upper end, and a low noise amplifier 6 is provided on one side of the interference canceller 5. The base plate 1 has an intelligent impedance matching module 3 at its four corners.

[0029] In use, the device utilizes a motor 10 to drive the lifting plate 4 up and down. The lifting plate 4 contains a metal mesh 13, which, due to its excellent conductivity, reflects high-frequency interference signals, preventing these electromagnetic waves from penetrating the antenna. The electromagnetic isolation band 7 is a triangular design made of a soft magnetic material with high permeability. Its main function is to attract and guide stray electromagnetic signals. When external electromagnetic waves approach the antenna radiating element, the ring-shaped electromagnetic isolation band 7 attracts these stray electromagnetic signals and guides them away from the core radiation area of ​​the antenna, thus reducing interference from external electromagnetic signals on the antenna's normal operation. The intelligent impedance matching module 3 can monitor the antenna's input impedance changes and surrounding electromagnetic environment parameters in real time. Through a built-in adaptive algorithm, it can dynamically adjust the adjustable capacitors and inductors in the matching network according to actual signal transmission requirements and interference conditions, ensuring the antenna maintains optimal impedance matching across the entire operating frequency band. When encountering sudden strong interference, the module will quickly trigger the dynamic tuning mechanism, automatically switching to the backup frequency operating point or adjusting the antenna radiation pattern to avoid areas with high interference intensity. The integrated design of low-noise amplification and interference cancellation highly integrates and coordinates the circuitry of the low-noise amplifier 6 (LMA) and the temporal part of the interference canceller 5. A bandpass filter preprocessing unit is set at the front end of the LNA, which can pre-filter out most strong interference signals outside the frequency band, reducing the processing pressure of subsequent circuits. The interference cancellation circuit adopts time-domain cancellation technology based on adaptive filters. By collecting interference samples in the antenna received signal, it generates a cancellation signal with the same amplitude and opposite phase as the interference signal, and cancels the interference in real time before signal amplification, which greatly improves the signal processing capability and communication quality of the Bluetooth chip in strong interference environment.

[0030] Example 2

[0031] Please see Figures 1-4 As shown, this embodiment further includes, based on embodiment 1, an installation groove 3 12 is provided inside the lifting plate 4, and the metal mesh 13 is inserted into the inside from the upper end of the installation groove 3 12, which facilitates the installation and disassembly of the metal mesh 13, makes it easy to maintain and replace, and ensures that it continues to effectively perform its electromagnetic shielding function.

[0032] An electromagnetic isolation strip 7 is provided on the outer side of the lifting plate 4. The electromagnetic isolation strip 7 is triangular in design. The triangular electromagnetic isolation strip 7 is made of soft magnetic material with high magnetic permeability, which can efficiently adsorb and guide external stray electromagnetic signals, reduce interference to the normal operation of the antenna, and improve the anti-interference performance of the device.

[0033] The base plate 1 has a main control chip 2 on its upper end. The main control chip 2 is surrounded by a series of electronic control components for the Bluetooth chip. The main control chip 2 centrally controls and manages the Bluetooth chip and electronic control components, optimizes the signal processing flow, and ensures the stable and efficient operation of the Bluetooth communication function.

[0034] The upper end of the base plate 1 is provided with a mounting groove 9, and a mounting groove 11 is provided on one side of the mounting groove 9. A gear 8 is rotatably installed inside the mounting groove 9. A rack 14 is provided on one side of the lifting plate 4. The gear 8 meshes with the rack 14. Through the meshing transmission of the gear 8 and the rack 14, the rotational motion of the motor 10 is converted into the linear motion of the lifting plate 4, so as to realize the smooth lifting of the lifting plate 4. The structure is simple and reliable, and it is easy to control the height position of the lifting plate 4.

[0035] The mounting slot 2 11 is equipped with a motor 10. The output shaft of the motor 10 is fixedly connected to the rotation center of one side of the gear 8. The motor 10 provides a power source for the transmission of the gear 8 and rack 14. It can accurately control the speed and direction of the motor 10, and thus accurately control the lifting speed and height of the lifting plate 4 to meet the position requirements of the lifting plate 4 in different usage scenarios.

[0036] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An anti-interference Bluetooth chip antenna, comprising a base plate (1), a lifting plate (4), an intelligent impedance matching module (3), an interference canceller (5), and a low-noise amplifier (6), characterized in that: The base plate (1) has lifting plates (4) on all four sides at the top. The lifting plates (4) have metal mesh (13) inside. The base plate (1) has an interference canceller (5) at the top. The interference canceller (5) has a low noise amplifier (6) on one side. The base plate (1) has an intelligent impedance matching module (3) at the four corners at the top.

2. The anti-interference Bluetooth chip antenna according to claim 1, characterized in that: The lifting plate (4) has an installation groove three (12) inside, and the metal mesh (13) is inserted into the installation groove three (12) from the upper end.

3. The anti-interference Bluetooth chip antenna according to claim 2, characterized in that: The lifting plate (4) is provided with an electromagnetic isolation strip (7) on the outside, and the electromagnetic isolation strip (7) is designed in a triangular shape.

4. The anti-interference Bluetooth chip antenna according to claim 1, characterized in that: The base plate (1) is provided with a main control chip (2) at the upper end, and a series of electronic control components of the Bluetooth chip are surrounding the main control chip (2).

5. The anti-interference Bluetooth chip antenna according to claim 1, characterized in that: The base plate (1) has an installation groove 1 (9) on its upper end. An installation groove 2 (11) is provided on one side of the installation groove 1 (9). A gear (8) is rotatably installed inside the installation groove 1 (9). A rack (14) is provided on one side of the lifting plate (4). The gear (8) meshes with the rack (14).

6. The anti-interference Bluetooth chip antenna according to claim 5, characterized in that: The mounting slot 2 (11) is equipped with a motor (10), and the output shaft of the motor (10) is fixedly connected to the rotation center of one side of the gear (8).

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