TY - JOUR
T1 - Channel-Continuous Triplexer With Multiple Transmission Zeros Based on Cascaded High-Pass and Low-Pass Filters
AU - Zhou, Liguo
AU - Long, Zhihe
AU - Feng, Quanyuan
AU - Jin, Qiuyan
AU - Li, Yongwei
PY - 2022/5
Y1 - 2022/5
N2 - A channel-continuous triplexer (CCT) with multiple transmission zeros (TZs) is designed and processed by cascading the high-pass filter (HPF) and low-pass filter (LPF) through the matching branches. The CCT is realized based on the substrate integrated suspended line (SISL) technology. The out-of-band suppression (OBS) and roll-off rate (ROR) of CCT are improved by the TZs introduced by cross-coupling lines between the nonadjacent branches in the HPFs and high-low impedance microstrip line T junction in LPFs. The experimental results show that CCT covers 4-7 GHz by three continuous bandwidth-identical passbands with the fractional bandwidths (FBWs) of 22.2%, 18.1%, and 15.3%, respectively. The insertion loss within three passbands is less than 1.7 dB, the out-of-band rejection is more than 50 dB, and the ROR is greater than 200 dB/GHz.
AB - A channel-continuous triplexer (CCT) with multiple transmission zeros (TZs) is designed and processed by cascading the high-pass filter (HPF) and low-pass filter (LPF) through the matching branches. The CCT is realized based on the substrate integrated suspended line (SISL) technology. The out-of-band suppression (OBS) and roll-off rate (ROR) of CCT are improved by the TZs introduced by cross-coupling lines between the nonadjacent branches in the HPFs and high-low impedance microstrip line T junction in LPFs. The experimental results show that CCT covers 4-7 GHz by three continuous bandwidth-identical passbands with the fractional bandwidths (FBWs) of 22.2%, 18.1%, and 15.3%, respectively. The insertion loss within three passbands is less than 1.7 dB, the out-of-band rejection is more than 50 dB, and the ROR is greater than 200 dB/GHz.
KW - Bandwidth
KW - Continuous channels
KW - Equivalent circuits
KW - filter
KW - Filtering theory
KW - Microwave theory and techniques
KW - multiplexer
KW - Passband
KW - substrate integrated suspended line (SISL)
KW - Substrates
KW - transmission zero (TZ)
KW - Wireless communication
UR - http://www.scopus.com/inward/record.url?scp=85123368597&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85123368597&origin=recordpage
U2 - 10.1109/LMWC.2022.3140210
DO - 10.1109/LMWC.2022.3140210
M3 - RGC 21 - Publication in refereed journal
SN - 1531-1309
VL - 32
SP - 395
EP - 398
JO - IEEE Microwave and Wireless Components Letters
JF - IEEE Microwave and Wireless Components Letters
IS - 5
ER -