Abstract

In this paper, a compact Dual-band Band Pass Filter (DBBPF) have been presented. The designing of filter is done from open loop coupled resonator and partial step impedance resonator coupling. Two open loop resonators are coupled to generate the first band bandpass filter. The second band is generated by using the partial stepped impedance resonator without joint, but by coupling. The center frequencies of the designed filter are 1.83 GHz and 2.94 GHz. The designing procedure of filter is simple. The insertion loss in pass bands are low as well as shows better out of band rejection. Two reflection zeros in each pass band is created as compared to the existing filter. The overall response of the proposed filter is relatively better than the previous one.

Keywords
Microstrip Filter, DBBPF, Resonators, Coupling, Stepped Impedance Resonator

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