In this study, design and simulation of microtrip bandpass filter is presented using RT/Duroid 6010.2 lm substrate. This filter has fan-shaped topology with small dimensions of 12x12 mm 2 , designed for dual band frequencies at 3.41 and 6.14 GHz. The insertion loss and return loss of initial band at 3.41 GHz are-0.7 and-38.224 dB respectively and its bandwidth ranged from 3.3561 to 3.48 GHz. On the other hand, for 2 nd band at 6.14 GHz, the insertion loss and return loss have been-1.377 and-14 dB respectively with bandwidth ranged from 6.0951 to 6.1782 GHz.
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