Design of Chebyshev’s Bandpass Filter Based on Square Open Loop Resonator (SOLR) at 5.8GHz

This article presents a design of a three order Chebychev’s bandpass filter based on square open loop resonator (SOLR) using a coupling matrix involves creating a structure where multiple resonators are coupled to achieve a specific frequency response for wireless communication. The filter is designed at the center frequency 5.8GHz with passband ripple of 0.01dB, fractional bandwidth 3.4% and WL-CT338 substrate with a dielectric constant of 3.38 and thickness of 0.813mm. The design is simulated using CST. The EM simulation responses of filter achieve a very good return loss of 26dB.