US7323955B2 - Narrow-band absorptive bandstop filter with multiple signal paths - Google Patents
PDF) Switchable absorptive bandstop to bandpass filter using dual-mode ring resonator | Badrul Hisham Ahmad - Academia.edu
Micromachines | Free Full-Text | Design of a Switchable Filter for Reflectionless-Bandpass-to-Reflectionless-Bandstop Responses
A Novel Band-Stop Filter with Band-Pass, High-Pass, and Low-Pass Negative Group Delay Characteristics
Mixed-technology quasi-reflectionless planar filters: bandpass, bandstop, and multi-band designs | International Journal of Microwave and Wireless Technologies | Cambridge Core