Performance of Microstrip Low-Pass Filter on Electromagnetic Band Gap Ground Plane

摘要

In this work, the performance characteristics of a printed low-pass filter (LPF) were analyzed on an electromagnetic band gap (EBG) ground plane. A ninth order Chebyshev LPF was designed at 2.44 GHz cut-off frequency using Stepped Impedance Resonator (SIR) method. The simulation results show that the EBG pattern of rectangular slots etched on the ground plane and located offset from the center line not only offers an improved stopband characteristic but also reduces the overall size of the filter. Finally, a prototype model was developed based on the results obtained from the simulation and tested. The simulated and experimental results show good agreement.