مرکز منطقه ای اطلاع رسانی علوم و فناوری Iberian Journal of Applied Sciences and Innovations 2184-8114 1 1 2023 11 25 Size Reduction of Planer Dipole Antenna withUsing New Hybrid Koch Fractal Size Reduction of Planer Dipole Antenna withUsing New Hybrid Koch Fractal en Ali Gashtasbi Instructor in Hyrcania Non-profit Institute 2020 5 25 this paper presented a new hybrid Koch dipole fractal antenna that contributes to a 20% antenna size reduction. There is analyze the third iterative application of a new hybrid dipole fractal that leads to to10% extra shrinkage. The simulation result shows that the proposed antenna is useful for GSM900 application. http://ijasi.iberianjournals.com/fa/Article/Download/44804