Design of Multi-Band Filters Using Parallel Connected Topology
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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.
Keywordsdual-band, dual-mode, multi-band filter, parallel connected topology, stepped-impedance resonator (SIR), transmission zero (TZ), triple-band
Document typePeer reviewed
Document versionFinal PDF
SourceRadioengineering. 2018 vol. 27, č. 1, s. 186-192. ISSN 1210-2512
- 2018/1