Fully screen printed LRC resonant circuit

• Screen printed passive components on flexible substrate are presented.
• Printed passive components and circuits behave similarly to their conventional counterpart.
• LRC components and circuit were successfully modeled with impedance spectroscopy.
• Resonance is achieved with a fully printed LRC circuit.

This work reports on the successful fabrication and characterization of fully screen printed resistors, inductors, capacitors and LRC resonant circuit. Ink formulation and screen printing techniques were used to demonstrate the feasibility and reproducibility of fabricating components of resonant circuits. The equivalent circuit models of the individual printed components were established and used to model and extract parameters of individual components, from the fits of the impedance measurements data. We showed that the sample thickness and compaction were important factors necessary to reduce the resistance of the inductors. A quality factor of 25.5 at 13.5 MHz was achieved on the printed inductor. A fully printed LRC circuit was further produced and characterize. Furthermore, a quality factor of 1.91, was achieved with band width of 2.42 MHz. The results demonstrated that printed components had similar electric models with their discrete counterparts. Thus passive components could be screen printed with extraordinary accuracy for a given component's design.

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