Electroplating copper onto ink-jet printed silver coplanar waveguide (CPW) significantly reduces the insertion loss and can improve return loss. The structures are fabricated on flexible polyimide substrates using ink-jet printing and low-temperature curing. Copper-coated silver CPW exhibits good adhesion and flexibility and the RF and microwave performance is minimally affected by bending.
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Xu et al. (2013) studied this question.
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