Synthesis of compact impedance buffers on the basis of tapered stubs

Optimal designs of stepped real impedance transformers (IT) with tapered stubs (NS) are presented. Comparative analysis of matching band, reflection coefficient in band and length of stepped IT with NS and uniform stubs (US) is made. It was shown that considered designs have lesser reflection coefficient in matching band and, which is more important, the length of NS less than length of US.