TY - JOUR
T1 - Balanced filters with wideband common mode suppression using dual-mode ring resonators
AU - Feng, Wenjie
AU - Che, Wenquan
AU - Xue, Quan
PY - 2015/6/1
Y1 - 2015/6/1
N2 - Two novel balanced filters with wideband common mode suppression using dual-mode ring resonators are proposed in this paper. Two and four transmission zeros close to the passband are realized to improve the selectivity for the differential mode. In addition, over 20-dB common mode suppression can be realized from 0 GHz to 5f0 (f0 is the center frequency of the passband), due to the all-stop transmission characteristic of the open/shorted coupled lines. To verify the presented concepts, two prototypes (εr=2.65, h=1.0 mm) with 3-dB fractional bandwidths of 22.9% and 21.9% for the differential mode are designed and fabricated. The theoretical and measured results agree well and show good in-band filtering performance and high selectivity.
AB - Two novel balanced filters with wideband common mode suppression using dual-mode ring resonators are proposed in this paper. Two and four transmission zeros close to the passband are realized to improve the selectivity for the differential mode. In addition, over 20-dB common mode suppression can be realized from 0 GHz to 5f0 (f0 is the center frequency of the passband), due to the all-stop transmission characteristic of the open/shorted coupled lines. To verify the presented concepts, two prototypes (εr=2.65, h=1.0 mm) with 3-dB fractional bandwidths of 22.9% and 21.9% for the differential mode are designed and fabricated. The theoretical and measured results agree well and show good in-band filtering performance and high selectivity.
KW - Balanced filter
KW - coupled lines
KW - differential/common mode
KW - dual-mode
KW - transmission zero
UR - http://www.scopus.com/inward/record.url?scp=84930959659&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84930959659&origin=recordpage
U2 - 10.1109/TCSI.2015.2423752
DO - 10.1109/TCSI.2015.2423752
M3 - RGC 21 - Publication in refereed journal
SN - 1549-8328
VL - 62
SP - 1499
EP - 1507
JO - IEEE Transactions on Circuits and Systems I: Regular Papers
JF - IEEE Transactions on Circuits and Systems I: Regular Papers
IS - 6
M1 - 7112578
ER -