Compact design and simulation of low pass microwave filter on microstrip transmission line at 2.4 GHz

This paper presents a frequency responsive 5 pole microstrip Low Pass filter at 2.4 GHz with Z₀ = 50 ohm and passband ripple L_AR = 0.04321dB. This presents a novel design of Chebyshev LPF prototype with substrate thickness 1.6 mm, strip thickness 0.035 mm, FR4 substrate relative permittivity is 4.4 and dielectric loss tangent 0.02. The simulated results for the filter are in good concurrence and shows cutoff at 2.4 GHz. In this filter with changing every high or low impedance characteristics such as length or width desired characteristics can be rich and the simulation and analysis of the low pass planar filter is performed using the Ansoft's HFSS simulator. Snapshots of the simulation and the graphical results obtained are shown in the paper. Design with making by the micro strip technology, it becomes practical. This Filter has less complexity rather than other filters.