access icon free Compact filtering power divider with extended stopband using out-of-phase feeding scheme

A compact filtering power divider is proposed with very wide stopband suppression in this letter. First, the dual-composite right- and left-handed (D-CRLH) resonator is employed, while one extended stopband can thus be achieved due to its inherently slow-wave response. Secondly, one out-of-phase feeding scheme is introduced to realise D-CRLH filtering power divider. By putting the input and output ports on the different sides of D-CRLH resonators, the mismatching can be realised for the harmonics below 10 GHz and wide stopband suppression is obtained accordingly. For experimental verification, a compact filtering power divider is designed, fabricated, and measured. Wide stopband suppression is observed until 5f 0 without using bandstop structures or complex coupling topology.

Inspec keywords: microwave filters; microwave resonators; band-stop filters; power dividers; resonator filters

Other keywords: compact filtering power divider; D-CRLH resonator; out-of-phase feeding scheme; extended stopband; slow-wave response; D-CRLH filtering power divider; wide stopband suppression; dual-composite right-left-handed resonator; temperature 5.0 F; frequency 10.0 GHz; complex coupling topology; bandstop structures

Subjects: Passive filters and other passive networks; Waveguide and microwave transmission line components

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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2019.3077
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