4.6 Article

1 to 220 GHz Complex Permittivity Behavior of Flexible Polydimethylsiloxane Substrate

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出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2013.2295230

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Flexible electronics; millimeter wave; permittivity measurement; polydimethylsiloxane (PDMS); polymer films

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Coplanar transmission lines (CPW) are realized on polydimethylsiloxane (PDMS) substrate in order to characterize its complex permittivity, from 1 to 220 GHz. By varying the complex permittivity, the propagation constant of the PDMS-CPW calculated with full wave software is matched to those extracted by de-embedding techniques using S-parameters measurements. The real permittivity evolves from 2.9 to 2.55 while the loss tangent increases slowly to reach 0.048 at 210 GHz.

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