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Communication Dans Un Congrès Année : 2015

Ultra-foldable/stretchable wideband RF interconnects using laser ablation of metal film on a flexible substrate

Résumé

In this paper we demonstrate the feasibility of mechanically flexible and stretchable coplanar waveguide (CPW) transmission lines at millimeter-wave frequencies. Our approach is based on meander horseshoe-shaped CPW line on 125 mu m-thick Polyethylene Naphthalate (PEN) dielectric substrate. The desired meander shape pattern of the conductor is structured using a nanosecond pulsed laser source operating at 351 nm wavelength by the precise patterning of a 1 mu m-thick conductive film deposited on a plastic foil. The cutout is realized by following the outer meander shape path of the structure providing an ultra-flexible/ stretchable interconnect line. An experimental attenuation below 0.12 dB.mm(-1) for a 13 mm length of signal conductor has been obtained at 40 GHz. When submitted to bending on a semi-cylinder of known radius, the measured transmission coefficient show small variations less than 0.05 dB even for bending radius in the centimeter range.
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Dates et versions

hal-03325008 , version 1 (24-08-2021)

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Sofiene Bouaziz, Matthieu Berthomé, J.F. Robillard, Emmanuel Dubois. Ultra-foldable/stretchable wideband RF interconnects using laser ablation of metal film on a flexible substrate. 45th European Microwave Conference (EuMC), Sep 2015, Paris, France. ⟨10.1109/EuMC.2015.7345902⟩. ⟨hal-03325008⟩
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