Analysis of Microwave Filter based on LC Chips in Microstrip Circuitry using K-Inverter Approach

Abstract

This research presents an analysis of microwave filter based on LC chips in microstrip circuitry using K-inverter approach. The microwave filters were analyzed and implemented using the immittance inverter parameters that can transform the ideal transmission line on microstrip circuitry structure to equivalent filter circuit. A simulator based on GUI function of MATLAB® is developed to be flexible in designing filters. In this paper, the BPF filter was implemented using microwave capacitor and inductor chips fabricating on FR4 printing circuit board. The filter prototype has accomplished in operating frequency range of 1.07 - 1.69 GHz and was tested in comparing to commercial simulator. The simulated results of designed BPF filter are consistent to filter theory and commercial simulator.