Novel Absorptive Bandstop Filter Design(1/3)

In view of the potential of absorptive bandstop filter for applications in cognitive radio and multi-bandmulti-mode RF transceivers, the target of this project is to develop various novel absorptive bandstop filterdesigns. Novel absorptive bandstop filter with tunable stopband frequency and bandwidth as well as novelminiature absorptive bandstop filters will also be developed. The proposed absorptive bandstop filter designis based on introducing lossy resonator(s) to the conventional reflective bandstop filter, such that it can beeasily extended to higher-order ones for better selectivity. Suitable equivalent-circuit models, designequations, and design procedures will also be established as effective design tools.