Permeability and Permittivity Measurements of Teflon in Millimeter Wave

Abstract

Abstract In order to expand a new millimeter wave absorbing material over the V-band frequency range, teflon were prepared with thickness of 1.4 mm, 1.5 mm, and 1.6 mm. The variation of electromagnetic variables (complex permeability µ=µ′–jµ″ and complex permittivity ε=ε′–jε″) properties were studied over the V-band frequency range with varying sample thickness. Both dielectric loss (ε″) and magnetic loss (µ″) were leading to strong fluctuations, whereas the dielectric constant (ε′) was found to decrease and magnetic permeability (µ′) increased in the frequency range of 50–67 GHz.