Size Reduction of Microstrip Patch Antenna by Using Meta-Fractal Technique

Size reduction of square patch antenna is proposed using meta-fractal technique. This technique implies adding fractal shape (Peano shape here) to the classical square antenna to reduce its size and then a complementary split ring resonator (CSRR) is slotted on the patch as a defect. The defect enforces the antenna to behave as meta-material in a specific frequency range. Peano fractal antenna has three resonances. The complementary split ring resonator affects the upper two x-band frequencies and makes the antenna resonates at 9.5 GHz and 10 GHz rather than 10 GHz and 10.89 GHz. Shifting the resonances of the antenna means size reduction is obtained. Calculations are carried using (HFSS) software, which is based on finite element modeling. Good convergence obtained of measurement and calculated results.