Complex Permittivity, Complex Permeability and Microwave Absorption Properties of BaTiO3/PVB Composites
Yuksel Akinay Fatih HAYAT Hasan GÖKKAYA
AbstractThe influence of microwave absorbing properties of polyvinyl butiral (PVB)/BaTiO3 composites were investigated in the 1-14 GHz. PVB/filler particles (BaTiO3) composites were prepared with 85/15, 90/10 and 95/5 mixture ratios via Ultrasonic Probe Sonicator method in solution. The complex permittivity (ε’- jε’’) and permeability (μ’- jμ’’) of the composites have been measured at different microwave frequencies in 1–14 GHz employing vector network analyzer (Keysight N9926A). The reflection loss (RL) of composites was calculated and evaluated using the theory of the absorbing wall. The results show that absorption is increasing as the fillers rate increase and thickness is decreased. This can be understood based on quarter wave principle within the frequency range from 1 GHz-14 GHz for different thickness.