Bandpass filter using short circuited stubs for mobile Wi-Max application

This paper presents a microstrip mobile Wi-max band pass filter that uses short circuited stubs. The proposed filter is designed that uses combination of step impedance low pass filter (LPF) and the optimum distributed high pass filter (HPF). The Wi-Max ((Worldwide interoperability Microwave Access)) band pass filter is deployed on FR4 dielectric substrate with thickness of 0.8mm and the filter occupies 38.64mm × 30mm area. This filter is operating in the Wi-Max pass band of 2.34 GHz to 2.58GHz and it has a insertion loss of (S21) -1.6dB and return loss of (S11) -19.94dB. The designed filter has been optimized using CST microwave studio software.