A dual-band band pass filter using rings resonator for space communication

摘要: A Dual-band BPF with parallel-coupling feed and ring resonators is designed simulated. Parallel coupling feed, results in good between input output isolation frequency bands by generating deep zero passband. Ring resonator make filter as dual-band shifting higher order resonating modes to desired range. Filter response two 4.808–5.216 GHz 8.348–9.043 covered C X band respectively. Some applications of these are mobile communication, Radio astronomy, space research aeronautical radio navigation. Compact size (131 mm2), Small group delay (<0.43 nanosecond), large attenuation stop (larger than 20db till 16GHz), 3dB FBW (21.47% 19.87%), small insertion loss, return loss passband some advantageous factors proposed design. Simulation done using CST microwave studio 2013.