Microstrip Technology by reducing volume and weight. The filters so designed must have a rejection of unwanted signals by more than 45 dB about 50MHz around cut of This book covers the aspects of miniaturization of the microwave band pass filter by designing the filter in various topologies suitable for airborne application using Microstrip transmission lines for 1GHz clock source. The project is to miniaturize "L-Band Microstrip Band Pass Filter" by using EESOF software (Frequency Domain Analysis) and GENESYS software as a tool. The Project shall be concluded with the comparison of the test results viz. dimensions, insertion losses, and rejections so as to optimize the parameters suitable for development of a band pass filter for air borne applications.