In 2023, the Flexible Radio Frequency Technology Research Center of Southeast University published a research paper entitled "Digitally Controlled Tunable Fabric Microwave Filter Based on Organic Electrochemical Transistors" in the journal Advanced Materials Technologies (impact factor: 7.848). The following is a detailed introduction.
As the functional requirements of wearable systems continue to increase, different communication links are needed, which may lead to signal interference and compromise the communication stability of wearable systems. To address this issue, we propose a novel strategy for realizing a tunable fabric microwave filter using artificial surface plasmon polariton (SSPP) structures and organic electrochemical transistors (OECTs). The filter is made of fabric material, and OECTs are introduced as state-tuning materials and printed into the structure, exhibiting excellent flexibility, high planar integration, and wearing comfort. Through a carefully designed gradient structure, the multi-state dispersion characteristics of the fabric filter can be effectively altered by applying different voltage sequences, thereby changing its operating frequency. To our knowledge, this is the first tunable microwave filter designed for wearable systems.
Paper Information
Chen H, Geng M Y, Chen Z M, et al. Digitally Controlled Tunable Fabric Microwave Filter Based on Organic Electrochemical Transistors[J]. Advanced Materials Technologies, 2023: 2300428
https://onlinelibrary.wiley.com/doi/10.1002/admt.202301111
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