Design, simulate analyze the performance of parallel coupled micro strip band pass filter at 1.5 GHZ for GPS applications

Abstract

In this trending generation, world is mainly focusing on system miniaturization, without affecting the performance. GPS (Global Positioning System) is a satellite navigation system, used to determine the ground position. Radio Frequency (RF) filters used in this GPS receiver should be in compact size. One of the RF transmission line structure is micro strip line structure, and it is the most preferable one because of its low cost, compact size, less weight etc. In this work, a small sized parallel coupled microstrip band pass filter was designed with the frequency of 1.5GHz lies in the L band and 200MHz frequency band. The simulation was carried out by using the software, Advanced Design System 2016 (ADS). Easily available and cost effective Fire Retardant 4 substrate with the dielectric constant of 4.4 was used to design the filter. The designed filter meets the required insertion and return loss values.