All-inkjet-printed low-pass filters with adjustable cutoff frequency consisting of resistors, inductors and transistors for sensor applications

by / Wednesday, 31 August 2016 / Published in

All-inkjet-printed low-pass filters with adjustable cutoff frequency consisting of resistors, inductors and transistors for sensor applications


Published in: Organic Electronics, 38, 205-212
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DOI: http://dx.doi.org/10.1016/j.orgel.2016.08.025 Authors:
H. F. Castro V. Correia E. Sowade K. Y. Mitra J. G. Rocha R. R. Baumann Senentxu Lanceros-Mendez
Abstract:

Low-cost and flexible first and second order low-pass filters with adjustable cutoff frequency were designed and printed by inkjet printing technology. The all-inkjet-printed low-pass filters were haracterized and an adjustable cutoff frequency feature in form of an inkjet-printed organic thin-film transistors (OTFTs) was added to the filters for application-oriented fine-tuning. The applicability of these small circuits was evaluated by signal filtering for sensor applications. As a result, low-pass filters with an adjustable cutoff frequency ranging from 82 Hz to 740 Hz were obtained, demonstrating their suitability in signal filtering and their promising applicability for tactile sensing characterized by low frequency signals.

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