Highly Selective, Compact Ultra-Wide Band Bandpass Filter Using a Novel Multiple Resonances Resonator (MRR)

In this paper a high selective compact ultrawide
band (UWB) bandpass filter has been designed using a novel
multiple resonances resonator (MRR). Equivalent circuit has
been extracted for the proposed single order MRR where
the filtering function was derived, showing the feasibility
of a maximum of six transmission poles in the passband.
Finite frequency transmission zero was introduced by having
a mixed coupling in the MRR structure, resulting in a
compact UWB filter with high selectivity filtering response.
A prototype is fabricated to validate the proposed design.
Experimental and simulated results shows good agreement.