Gain Enhancement of Miniaturized Fractal Antenna with Help of Complementary Fractal Lens

This article proposes a novel gain enhancement method for fractal antennas. The proposed fractal geometry for fractal antenna is inspired from a combination of two geometries, Giuseppe Peano and Minkowski. The proposed geometry shows miniaturization by shifting the lowest resonant frequency towards the lower frequency side. The gain of the fractal antenna is enhanced with the help of complementary fractal lens place on top of the patch at some distance. The enhancement in gain is about 1.5 dB. The 50% gain enhancement is contributed to the complementary fractal lens. The antenna is designed and fabricated on the dielectric material Roggers RO4003 lossy, with a dielectric constant of εr = 4.38.