Design and optimization of microstrip Hairpin-Line bandpass filter using DOE methodology

This paper proposes a novel methodology for the optimization of Hairpin-Line bandpass filter. The proposed methodology is based on well-known Plackett-Burman Design of Experiment technique. First, a five section hairpin resonator is designed to operate at a center frequency of 2.4GHz with a bandwidth of 300MHz using Genesys software. Plackett-Burman Design of Experiment methodology is then applied to this filter for further optimization. Implementation of proposed approach shows 61% improvement in return loss and 15% improvement in insertion loss of the filter as compared to the filter designed using Genesys software.