A new transverserval coupling network is proposed to design of multiple-band bandstop filters. The resonators in the proposed transversal coupling network have a few of center frequencies and some of them have similar or the same resonating frequency to realize multiple-band bandstop suppression, which are applied to reject pulse signals or bandwidth signals in broadband technique applications. A triple-band bandstop filter is designed by adopting substrate integrated waveguide to demonstrate the feasibility of this proposed network.
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Han et al. (2007) studied this question.
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