TY - JOUR
T1 - A compact tri-band bandpass filter using two stub-loaded dual mode resonators
AU - Rahman, Muhib Ur
AU - Park, Jung Dong
N1 - Publisher Copyright:
© 2018, Electromagnetics Academy. All rights reserved.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - In this paper, we present a compact tri-band bandpass filter (BPF) using two stub-loaded dual mode resonators (SLDMRs) combined with intra-coupled internal resonators. The designed filter operates at 1.575, 2.4, and 3.45GHz, corresponding to the GNSS, WLAN, and WiMAX applications, respectively. The passbands of the filter are determined by odd- and even-mode frequencies created by the SLDMR and the internal open loop resonator inside of it. The corresponding even-mode frequency can be adequately tuned by adjusting the length of the stub while the odd-mode frequency is fixed. Two transmission zeros (TZ’s) are introduced on each side of the passband to improve the selectivity of the implemented filter. Five TZ’s around the edges of three passbands make the passbands highly isolated, and these TZ’s can be placed according to the desired choice. The proposed tri-band BPF was designed, fabricated and measured, and the simulated and measured results corresponded very well.
AB - In this paper, we present a compact tri-band bandpass filter (BPF) using two stub-loaded dual mode resonators (SLDMRs) combined with intra-coupled internal resonators. The designed filter operates at 1.575, 2.4, and 3.45GHz, corresponding to the GNSS, WLAN, and WiMAX applications, respectively. The passbands of the filter are determined by odd- and even-mode frequencies created by the SLDMR and the internal open loop resonator inside of it. The corresponding even-mode frequency can be adequately tuned by adjusting the length of the stub while the odd-mode frequency is fixed. Two transmission zeros (TZ’s) are introduced on each side of the passband to improve the selectivity of the implemented filter. Five TZ’s around the edges of three passbands make the passbands highly isolated, and these TZ’s can be placed according to the desired choice. The proposed tri-band BPF was designed, fabricated and measured, and the simulated and measured results corresponded very well.
UR - http://www.scopus.com/inward/record.url?scp=85042496317&partnerID=8YFLogxK
U2 - 10.2528/pierm17120404
DO - 10.2528/pierm17120404
M3 - Article
AN - SCOPUS:85042496317
SN - 1937-8726
VL - 64
SP - 201
EP - 209
JO - Progress In Electromagnetics Research M
JF - Progress In Electromagnetics Research M
ER -