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A new type of dual-band bandpass filter (BPF) using microstrip line is presented in this paper. The proposed design consists of coupled-lined filter, butterfly radial stub and 45° miltered bending with new structure called Dual Band Bell Shaped Filter (DBBSF). The proposed DBBSF consists of two fundamental resonant modes with the bandwidth resonant characteristic has been investigated using ADS software. The bandwidths are achieved through optimising the butterfly radial stub for high frequencyfatcat:zvwoxxelrrachagyi4dqhmpwhu