Abstract: This paper presents the design & analysis of a planar multiband antenna (Iterated Pythagorean fractal tree antenna) with impedance steps in base path. Impedance steps are adopted with finite ground plane for better impedance matching, multiband & bandwidth characteristics as compare to non-iterated form. As tree iteration increases new resonance frequency will obtained, Iterated Pythagorean fractal multiband tree antenna (IPTFA) has compact size of 41.08*41.08*1.57 mm3 and operates over the frequency band of 2.4 GHz. The improvement in multiband behavior id investigated & discussed with VSWR<2.