Chebyshev quarter wavelength wideband bandstop filter based on dumbbell annular ring resonator
作者： Shakhawat Parvez , Nazmus Sakib , Md. Nurunnabi Mollah
DOI: 10.1109/ECACE.2017.7913029
关键词:
摘要: In this letter, a novel seventh order equal ripple wideband bandstop filter (BSF) is proposed and demonstrated. This device based on dumbbell annular ring (DAR) resonators which introduces additional magnetic coupling with quarter wavelength open circuited stubs in the conventional 50-Ω transmission line. However, introducing DAR (DARRs) generate multiple zeros responsible for wider stop band can be determined from S-plane. Moreover, BSF has selectivity up to 170 dB/GHz, rejection level better than 50-dB, suppress reflection 12-dB pass fractional bandwidth 113.1%. Besides, group delay within 3 ns over 80% of band. The simulated frequency performances two different software's are well agreement theoretical data.
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