The present work is focused on exploring the PANI/PbO and PANI/Ta2O5 based composites for microwave absorbing applications. Here, different compositions of PANI/PbO and PANI/Ta2O5 composites were synthesized by wet chemical routes. The structural details were carried out by using TG/DTA, XRD, FT-IR, FE-SEM with EDX etc. Then the AC, DC conductivity studies, Dielectric loss and Dielectric constant were calculated by using impedance spectroscopy. Simultaneously, we understand and contribute to the basic material/ polymer chemistry aspects of doped PANI based composites in general.