Built-in FPC antenna for tunable broadband

By integrating a tunable wideband built-in FPC antenna, and utilizing multiple inductive components and a signal controller to achieve dynamic adjustment of frequency and impedance, the problem of poor adaptability of existing wideband FPC antennas is solved, thereby improving the frequency band adaptability and efficiency of the communication system.

CN224110470UActive Publication Date: 2026-04-10SUNNYWAY TECH (SHENZHEN) CO LTD
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Patent Information

Application Number
CN202521164910.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-09
Publication Date
2026-04-10
Estimated Expiration
2035-06-09

AI Technical Summary

Technical Problem

The operating frequency and impedance matching characteristics of existing broadband FPC antennas are difficult to dynamically adjust according to the actual application environment, resulting in poor frequency band adaptability and reduced efficiency.

Method used

A tunable broadband built-in FPC antenna was designed. By integrating multiple switchable inductors and a signal controller, dynamic tuning of the antenna resonant frequency and impedance matching can be achieved. Different types of antenna structures can be combined to adapt to multi-band communication requirements.

Benefits of technology

It enhances the antenna's adaptability to different frequency bands, broadens the operating bandwidth, improves signal transmission efficiency and matching performance, and meets the multi-band and high integration requirements of modern communication systems.

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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.
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