Design of Multi-Band Filters Using Parallel Connected Topology

S. Cheab, P. W. Wong, S. Soeung

Design of Multi-Band Filters Using Parallel Connected Topology

Číslo: 1/2018
Periodikum: Radioengineering Journal
DOI: 10.13164/re.2018.0186

Klíčová slova: dual-band, dual-mode, multi-band filter, parallel connected topology, stepped-impedance resonator (SIR), transmission zero (TZ), triple-band, dvoupásmová, duální, multi-pásmový filtr, paralelně připojená topologie, rezonátor krokového impedance (SIR), přenosová nula (TZ), třípásmový

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Anotace: This paper presents the design of multi-band filters using parallel connected topology. The resonator in each branch is the dual-mode resonator which provides two resonant modes per passband for miniaturization. The coupling values of the resonator are obtained by mapping the filtering function of the dual-mode resonator to the second order Chebyshev polynomial. The control of the filter parameters, such as pass-band bandwidths and band separation, is addressed. Dual-band and triple-band filter prototypes are designed and fabricated to validate the proposed concept. The measured results show good agreement with the simulations.