%0 Journal Article 
%A Yang, Li
%A Gómez García, Roberto
%T Multilayered balanced wideband bandpass filter with high filtering selectivity
%D 2021
%U http://hdl.handle.net/10017/51669
%X A type of multilayered balanced wideband
bandpass filter (BPF) with high filtering selectivity is presented.
It is composed of two back-to-back cascaded microstrip-tomicrostrip vertical transitions using slotline stepped-impedance
resonators (SIRs). Under differential-mode excitation, a sharprejection fifth-order wideband filtering transfer function with
two paired close-to-passband transmission zeros can be attained
in the proposed balanced BPF. Moreover, high common-mode
suppression levels within the differential-mode passband range
are achieved. For experimental-demonstration purposes, a
microstrip prototype of the devised balanced wideband BPF
architecture is developed and tested. It exhibits a measured
differential-mode fifth-order high-selectivity wideband filtering
response with center frequency of 4.015 GHz, 3-dB fractional
bandwidth of 38.06%, and minimum in-band power-insertionloss level of 0.947 dB. The common-mode suppression levels are
above 20 dB from 2.075 to 5.588 GHz.
%K Balanced filter
%K Bandpass filter (BPF)
%K High selectivity
%K Multilayered circuit
%K Vertical transition
%K Wideband filter
%K Telecomunicaciones
%K Telecommunication
%~ Biblioteca Universidad de Alcala