Design of the Novel Koch Fractal Triangular Shape Iterated Antenna

In this paper, Koch star shaped fractal antenna is proposed for commercial applications. The antenna has been designed by using self-similarity property i.e. Boolean addition of triangular shape patches [1-3]. Designing of Koch snowflake for different resonant frequency by increasing number of iterations are given. The proposed wide-band antenna is designed to operate at personal communication system (PCS 1.85–1.99 GHz), universal mobile telecommunication system (UMTS 1.92–2.17 GHz), Bluetooth /wireless local area network (W-lan), which operate in the 2.4 GHz (2.4–2.484 GHz) bands, mobile worldwide inter-operability for microwave access (mobile WiMAX), and WiMAX, which operate in the 2.3-2.5 GHz. The proposed antenna is fed by a 50Ω microstrip rectangular feed line and fabricated on a low-cost FR-4 lossy substrate having dimensions 40(l) × 40(w) × 1.6(h) With =4.4. The antenna shows acceptable gain 2-3 in the antenna bandwidth with nearly radiation pattern Omni-directional in the frequency band for telecommunication system applications [4-8].