Development of an original technology for manufacturing of RF antennas on flexible substrates

Starodubov, A. V.; Serdobintsev, Alexey A.; Галушка, В. В.; Kozhevnikov, Ilya O.; Ryabukho, P. V.; Коршунова, Г. А.; Gorodkov, S. Yu.; Pavlov, Anton M.

doi:10.1117/12.2525130

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“…Different types of RF circuits on flexible substrates have already been fabricated by using conventional methods, but generally, they associate a photolithography process with chemical etching. 18,19 However, in the case of biopolymers, this way of proceeding may affect the physical and chemical characteristics of the substrate because of the chemical products and the high temperatures used during the process. Thus, alternative methods have been proposed.…”

Section: Fabrication Processmentioning

confidence: 99%

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

Sid

Cresson

Joly

et al. 2022

Micro & Optical Tech Letters

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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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Section: Fabrication Processmentioning

confidence: 99%