2.45 GHz natural polymer‐based flexible bandpass filter exploiting laser structuring

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Sid, Abdelghafour | Cresson, Pierre-Yves | Joly, Nicolas | Braud, Flavie | Genestie, Benoit | Lasri, Tuami

Edité par HAL CCSD ; Wiley

International audience. This article presents the realization of a bandpass filter on a flexible biopolymer substrate with a suitable fabrication process. We used copper adhesive tape and laser structuring to fabricate the filter based on a quasi-lumped microstrip structure. The filter characteristics are a central frequency of 2.45 GHz, a bandwidth of 20%, and insertion loss of 1.2 dB. It is demonstrated that the filter's performance remains almost constant under different bending, folding, and rolling conditions. The results show that the proposed bio-sourced polymer is a good candidate for flexible green electronics and wearable applications.

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