Strontium titanate (SrTiO3) filled polytetrafluroethylene (PTFE) substrates were fabricated through sigma mixing (SM), extrusion (E), calendering (C) followed by hotpressing (H) (SMECH) process. The filler dispersion in the polymer matrix and the surface morphology were studied using scanning electron microscopic (SEM) technique. The permittivity (ɛ′r) and loss tangent (tan δ) of the composites were measured using precision impedance and vector network analyzers. The experimental permittivity of filled composites was compared with theoretically predicted values. Dimensionally stable substrate having a permittivity of 13.1 and a loss tangent of 0.0055 at X‐band was prepared in the PTFE/SrTiO3 composite system.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.