Design of Isosceles-Shaped Fractal Antenna for Ku and K-Band Applications

The proposed microstrip antenna is designed using fractal concept that operates for Ku-band and K-band applications. The shape of radiating element is Isosceles- Triangle. Fractal concept is used to design the isosceles triangle shaped patch antenna and the required Isosceles Triangle Fractal Antenna (ITF- Antenna) is designed. This antenna uses the concept of Von Koch's snowflake. Koch snowflake concept is based on generating L Euclidian segment which is divided into three segments. The antenna is developed using two iterations geometry. Simulations were carried out using commercially available method of moment based IE3D software. The proposed design is also verified using another methodology HFSS (High Frequency Structure Simulator) based of finite element method. The antenna resonates at 12.31 GHz, 13.18 GHz, 15.21 GHz and 19.7 GHz. Hence, Ku-band [12-18 GHz] and K-band [18-27 GHz] is the frequency of operating band under consideration. Also the gain of proposed antenna 5.1613 dB at frequency of 15.21 GHz is achieved. The comparison of return loss versus frequency plot of proposed antenna using both the simulation verified the results.