Perfectly-Matched Bandstop Filters using Lossy Resonators
LEEDS UNIV (UNITED KINGDOM) SCHOOL OF ELECTRONIC AND ELECTRICAL ENGINEERS
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Normal realizations of bandstop resonators with finite unloaded Q suffer from degradation of performance due dissipation loss. In this paper it is shown theoretically that there exists a class of second-order networks which simultaneously exhibit an ideal bandstop resonance, with infinite stopband attenuation, and a perfect match at all frequencies. Theoretical analysis is backed up with experimental results for three different physical realizations.
- Electrical and Electronic Equipment