A cost effective dual band chebyshev parallel coupled microstrip line bandpass filter for ISM band applications

In this paper, a 5th order dual band chebyshev parallel coupled microstrip line bandpass filter is designed for Industrial, Scientific, and Medical (ISM) radio band and so this filter allows 2.4 GHz and 5 GHz frequency bands. ISM band is used in dual band routers and 2.4/5 GHz transverter. The designed filter is simulated using Advanced Design System (ADS) simulator and implemented on FR4 substrate with relative dielectric constant of 4.6. The simulated design has high return loss and low insertion loss on the desired ISM frequency bands.