Microwave Absorbing Properties of Teflon Coating for X-Band Frequencies

In this research, teflon coating for microwave absorption applications was investigated. The microwave absorption properties of teflon with thicknesses of 1, 2, 3, 4, 5, 6, 7, and 8 mm were investigated using a vector network analyzer (VNA) in the frequency range of 7-13 GHz. Based on the reflected signal (S-11) and transmitted signal (S-21), the complex permeability (mu) and permittivity (epsilon) of teflon were resulted. The optimal absorption properties were achieved with a reflection loss of less than -10 dB (90% absorption) for -17.35 dB at 10.5 GHz at a thickness of 8 mm.