Built-in FPC antenna for tunable broadband

Abstract

The utility model relates to the technical field of communication, in particular to a built-in FPC (Flexible Printed Circuit) antenna for tunable broadband. The utility model provides a tunable broadband built-in FPC antenna, which comprises a dustproof layer, an electromagnetic shielding cover, a wire end and the like, the electromagnetic shielding cover is arranged on the lower side of the dustproof layer, and the dustproof layer is connected with the wire end. Through the design of integrating a plurality of switchable inductance elements, dynamic tuning and accurate matching of the resonant frequency of the antenna are realized, not only is the adaptive capacity of the antenna under different frequency bands enhanced, but also the working bandwidth of the antenna is effectively widened, and the requirements of a modern communication system for multi-frequency band, high integration level and intelligent tuning are met; low return loss can be realized in a target frequency band, and the matching performance of the antenna and a transmission line and the signal transmission efficiency are improved; the method adapts to a wide frequency band range, and the performance of multiple frequency points is good; the structure is convenient to realize, manufacturing and integration are facilitated, cost is reduced, and the antenna can be widely applied to internet of things 4G antenna projects such as power banks and water meters.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication technical field especially relates to a tunable broadband built-in FPC antenna. BACKGROUND

[0002] The tunable broadband built-in FPC antenna is a flexible printed circuit antenna for covering broadband communication requirements, and has an adjustable function to optimize the working performance in different frequency bands. This type of antenna combines the physical advantages and frequency tuning capabilities of FPC antennas, and is suitable for various wireless communication standards and technologies.

[0003] In current wireless communication devices, built-in flexible printed circuit antennas are widely used to achieve broadband communication. Such antennas have been widely used in mobile terminals, Internet of Things devices and wearable products due to their compact structure, easy integration and low cost. However, the broadband FPC antennas in the prior art are mostly designed with fixed structures, and their working frequencies and impedance matching characteristics are difficult to dynamically adjust according to actual application environments, resulting in poor frequency band adaptability and reduced efficiency when facing complex and variable wireless communication scenarios.

[0004] In view of the above problems, a tunable broadband built-in FPC antenna needs to be designed. SUMMARY

[0005] In order to overcome the shortcomings of the broadband FPC antennas in the prior art, which mostly adopt fixed structure design and their working frequencies and impedance matching characteristics are difficult to dynamically adjust according to actual application environments, the utility model provides a tunable broadband built-in FPC antenna.

[0006] The technical scheme of the utility model is as follows: a tunable broadband built-in FPC antenna, comprising a dustproof layer, an electromagnetic shield, a line end, a signal controller, a low-frequency resonance end, a long-short resonance end, a gradually changing width trace, a first contact, a second contact, a line tail, a connector and an inductor element, the dustproof layer is provided with the electromagnetic shield on the lower side, the dustproof layer is provided with the line end connected thereon, the signal controller is connected to the right side of the line end, the low-frequency resonance end is arranged on the left side in the signal controller, the long-short resonance end is arranged on the right side in the signal controller, the gradually changing width trace is arranged in the signal controller, the first contact is arranged in the signal controller, the second contact is arranged in the signal controller, the line tail is connected to the right side of the signal controller, the connector is arranged on the right side of the line tail, and the dustproof layer is provided with a plurality of inductor elements mounted on the right lower side.

[0007] As a preferred technical scheme of the utility model, a CPU is further included, and the dustproof layer is provided with the CPU on the lower side.

[0008] As a preferred technical scheme of the utility model, a shielding device is further included, and the dustproof layer is provided with the shielding device mounted on the left lower side.

[0009] As a preferred technical scheme of the utility model, the dustproof layer is provided with two radio frequency enhancers on the lower left side.

[0010] As a preferred technical scheme of the utility model, the dustproof layer is provided with a monopole antenna on the upper right side.

[0011] As a preferred technical scheme of the utility model, the dustproof layer is provided with a fractal antenna on the upper right side.

[0012] As a preferred technical scheme of the utility model, the dustproof layer is provided with a patch antenna on the upper left side.

[0013] As a preferred technical scheme of the utility model, the dustproof layer is provided with a dipole antenna on the upper left side.

[0014] Beneficial effects are: the utility model has the beneficial effects that through the design of integrated multiple switchable inductance elements, dynamic tuning and accurate matching of antenna resonant frequency are realized, not only the adaptive ability of the antenna under different frequency bands is enhanced, but also the working bandwidth is effectively widened, the demand of modern communication system for multi-band, high integration and intelligent tuning is met, low return loss can be realized at the target frequency band, the matching performance and signal transmission efficiency of the antenna and the transmission line are improved, the performance of multiple frequency points is good in the wide frequency band range, the structure is convenient to realize, beneficial to manufacturing and integration, cost is reduced, and the utility model can be widely applied to power bank, water meter and other internet of things 4G antenna projects. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0016] Figure 2 It is a three-dimensional structure schematic view of the utility model line end, signal controller and low-frequency resonant end and other parts.

[0017] Figure 3 It is a three-dimensional structure schematic view of the utility model electromagnetic shielding cover, line end and signal controller and other parts.

[0018] Figure 4 It is a three-dimensional structure schematic view of the utility model inductance element, CPU and shielding device and other parts.

[0019] Figure 5 It is a three-dimensional structure schematic view of the utility model fractal antenna, patch antenna and dipole antenna and other parts.

[0020] The markings in the diagram are as follows: 1-Dustproof coating, 2-Electromagnetic shield, 3-Wire end, 4-Signal controller, 41-Low frequency resonant end, 42-Long and short resonant ends, 43-Gradually changing width trace, 44-First contact, 45-Second contact, 5-Wire tail, 6-Connector, 7-Inductor, 8-CPU, 9-Shielder, 10-RF booster, 11-Monopole antenna, 12-Fractal antenna, 13-Patch antenna, 14-Dipole antenna. Detailed Implementation

[0021] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] Example: A tunable broadband built-in FPC antenna, such as... Figures 1-5 As shown, the device includes a dustproof layer 1, an electromagnetic shielding cover 2, a wire terminal 3, a signal controller 4, a low-frequency resonant terminal 41, long and short resonant terminals 42, a tapered width trace 43, a first contact 44, a second contact 45, a wire tail 5, a connector 6, an inductor 7, a CPU 8, a shield 9, an RF booster 10, a monopole antenna 11, a fractal antenna 12, a patch antenna 13, and a dipole antenna 14. The electromagnetic shielding cover 2 is located under the dustproof layer 1 and is used to isolate external electromagnetic interference. A wire terminal 3 is connected to the dustproof layer 1. The signal controller 4 is connected to the right side of the wire terminal 3. A low-frequency resonant terminal 41 is located on the left side of the signal controller 4. The low-frequency resonant terminal 41 supports the resonance of low-frequency signals, improving low-frequency communication performance. Long and short resonant terminals 42 are located on the right side of the signal controller 4. A tapered width trace 43 is located inside the signal controller 4. A first contact 44 and a second contact 45 are located inside the signal controller 4. 4. A wire tail 5 is connected to the right side of the wire tail 5. A connector 6 is set on the right side of the wire tail 5. Multiple inductor components 7 are installed on the lower right side of the dustproof layer 1. A CPU 8 is set on the lower side of the dustproof layer 1. A shield 9 is installed on the lower left side of the dustproof layer 1. The shield 9 can reduce electromagnetic interference in a specific area and ensure high-precision signal processing. Two radio frequency enhancers 10 are installed on the lower left side of the dustproof layer 1. The radio frequency enhancers 10 are used to amplify weak radio frequency signals. A monopole antenna 11 is installed on the upper right side of the dustproof layer 1. The monopole antenna 11 has good directivity and miniaturization characteristics. A fractal antenna 12 is installed on the upper right side of the dustproof layer 1. The fractal antenna 12 can achieve multi-band operation in a limited space. A patch antenna 13 is installed on the upper left side of the dustproof layer 1. The patch antenna 13 is used for high-gain communication requirements in a specific frequency band. A dipole antenna 14 is set on the upper left side of the dustproof layer 1. The dipole antenna 14 has good radiation efficiency and omnidirectionality and is suitable for stable communication in a specific frequency band.

[0023] When using the device, the external radio frequency signal is accessed by the connector 6, transmitted to the signal controller 4 inside the wire tail 5, and frequency selection and impedance matching processing is performed here. During the processing, the gradually wide-width wire 43 structure helps to achieve wideband matching, significantly improving the antenna bandwidth performance. The low-frequency resonant end 41 and the long-short resonant end 42 support low-frequency and high-frequency signal resonance respectively, realizing multi-band compatibility. In the controller, through the switching operation of the first contact 44 and the second contact 45, combined with the built-in multiple inductance elements 7, the dynamic adjustment of the antenna resonant frequency can be realized, thereby completing the intelligent tuning function of the frequency band. The tuned signal is output through the left wire end 3 and is emitted or received by different types of antenna structures. Among them, the monopole antenna 11 and the fractal antenna 12 are used for broadband or multi-band communication, with good directivity and miniaturization advantage. The patch antenna 13 and the dipole antenna 14 are used for high-gain communication demand under specific frequency band. The two radio frequency enhancers 10 are used to amplify weak signals and improve communication stability and sensitivity. The electromagnetic shield 2 and the shield 9 can effectively isolate external electromagnetic interference and protect signal integrity. The CPU 8 is responsible for main control signal processing and frequency tuning logic, realizing intelligent and adaptive communication management.

[0024] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A built-in FPC antenna for tunable broadband, characterized by, The dustproof layer (1), electromagnetic shield (2), line end (3), signal controller (4), low-frequency resonance end (41), long-short resonance end (42), gradually changing width wiring (43), first contact (44), second contact (45), wire tail (5), connector (6) and inductance element (7) are included, the dustproof layer (1) is provided with electromagnetic shield (2) on the lower side, the dustproof layer (1) is provided with the line end (3) on the upper side, the line end (3) is provided with the signal controller (4) on the right side, the signal controller (4) is provided with the low-frequency resonance end (41) on the left side, the signal controller (4) is provided with the long-short resonance end (42) on the right side, the signal controller (4) is provided with the gradually changing width wiring (43) inside, the signal controller (4) is provided with the first contact (44) inside, the signal controller (4) is provided with the second contact (45) inside, the signal controller (4) is connected with the wire tail (5) on the right side, the wire tail (5) is provided with the connector (6) on the right side, a plurality of inductance elements (7) are mounted on the lower right side of the dustproof layer (1).

2. The tunable broadband FPC antenna with built-in FPC antenna according to claim 1, characterized in that, The CPU (8) is further included, and the CPU (8) is arranged on the lower side of the dustproof layer (1).

3. The tunable broadband FPC antenna with built-in FPC antenna according to claim 2, characterized in that, The shielding device (9) is further included, and the shielding device (9) is mounted on the lower left side of the dustproof layer (1).

4. The tunable broadband FPC antenna with built-in FPC antenna according to claim 3, characterized in that, The radio frequency enhancer (10) is further included, and two radio frequency enhancers (10) are mounted on the lower left side of the dustproof layer (1).

5. The tunable broadband FPC antenna with built-in FPC antenna according to claim 4, characterized in that, The monopole antenna (11) is further included, and the monopole antenna (11) is mounted on the upper right side of the dustproof layer (1).

6. A tunable broadband FPC antenna with a built-in FPC antenna according to claim 5, characterized in that, The fractal antenna (12) is further included, and the fractal antenna (12) is mounted on the upper right side of the dustproof layer (1).

7. A tunable broadband FPC antenna with a built-in FPC antenna according to claim 6, characterized in that, The patch antenna (13) is further included, and the patch antenna (13) is mounted on the upper left side of the dustproof layer (1).

8. A tunable broadband FPC antenna with a built-in FPC antenna as claimed in claim 7, characterized in that, The dipole antenna (14) is further included, and the dipole antenna (14) is arranged on the upper left side of the dustproof layer (1).

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