Authors : Ahmed A. Mahdi and Jabir S. Aziz
Abstract: Fractal geometry technique is a successful way for RF component miniaturization and this is the requirement of modern communication circuits. This study is intends to propose a dual mode BPFs based on fractal geometry to get miniaturized BPFs for ISM band applications at 2.4 Ghz. Koch fractal geometry has been used with corner cut perturbation and cross slotted perturbation techniques. Results show that the resulting BPFs possess quasi elliptic and chebyshev performance curves. A noticeable size reduction has been observed as the iteration order increases, size reduction of 74.01% has been obtained from the 3rd iterations modified Koch with cross slotted perturbation as compared with size of the conventional microstrip square patch resonator designed to operate at the same frequency and using the same substrate material.
Ahmed A. Mahdi and Jabir S. Aziz, 2011. Miniaturized Koch Pre-Fractal Bandpass Filter. Journal of Mobile Communication, 5: 57-61.