Inkjet Printed High-Q RF Inductors on Paper Substrate with Ferromagnetic Nanomaterial
Hoseon Lee, Benjamin S. Cook, K. P. Murali, Member, Markondeya Raj, M. M. Tentzeris,
IEEE MICROWAVE COMPONENT LETTERS
pp 419 - 421
Ferromagnetic nanoparticles, inkjet printing, paper substrate, RF inductor, RF Passives, Miniaturization
For the first time, high quality factor (Q), meander inductors are demonstrated utilizing inkjet-printing on organic paper substrates. Quality factors of up to 25, which is an order of magnitude greater than previous works, and inductance values of up to 8 nH are achieved. The high self-resonance frequency (SRF) of 8 GHz makes it possible for the inductors to be used in the 900 MHz and 2.4 GHz RFID bands, and in 5 GHz Wifi band. Furthermore, a study into the performance and miniaturization effects of inkjet-printing ferromagnetic nanomaterial onto the inductors shows increases in inductance of up to 5%. Applications for inkjet printed inductors include all-printed flexible and
wearable filters, resonators, and microwave matching networks.
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