Recently an innovative pass-band filter based on a disk with a pair of spiral slot etched has been presented in literature. Such a filter has an out-of-band steep descent of the transmission coefficient but a relatively poor insertion loss for frequencies far from the pass-band. In this contribution a multi-stage set up of these filters is proposed to ameliorate the rejected bands insertion loss. The proposed filter is still extremely compact if compared to filters with similar behavior.
A multi-stage pass-band filter with ultra-compact spiral-based elements / Cidronali A.; Collodi G.; Lucchesi M.; Maddio S.; Pelosi G.; Selleri S.. - ELETTRONICO. - (2020), pp. 1-4. (Intervento presentato al convegno 33rd General Assembly and Scientific Symposium of the International Union of Radio Science, URSI GASS 2020 tenutosi a ita nel 2020) [10.23919/URSIGASS49373.2020.9232172].
A multi-stage pass-band filter with ultra-compact spiral-based elements
Cidronali A.;Collodi G.;Maddio S.;Pelosi G.;Selleri S.
2020
Abstract
Recently an innovative pass-band filter based on a disk with a pair of spiral slot etched has been presented in literature. Such a filter has an out-of-band steep descent of the transmission coefficient but a relatively poor insertion loss for frequencies far from the pass-band. In this contribution a multi-stage set up of these filters is proposed to ameliorate the rejected bands insertion loss. The proposed filter is still extremely compact if compared to filters with similar behavior.
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