TY - JOUR
T1 - Pseudoelliptic bandpass filter realized using coupled stepped-impedance resonators with tapped I/O
AU - Tsai, Jsung Ta
AU - Huang, Cheng Liang
PY - 2000/10/20
Y1 - 2000/10/20
N2 - A tapped combline bandpass filter composed of two coupled stepped-impedance resonators (SIRs) and with tapped lines fed in/out is modeled. The admittance matrix for the entire circuit has been derived from the four-port coupled-line impedance and admittance matrices. The obtained admittance matrix is suitable for the design of a stepped-impedance combline filter, in which the coupled-line length, as opposed to the previous work, is not restricted. The most effective miniaturization for the filter is achieved by setting the critical condition (θ1 = θ2+θ3) for the cases of K>1. Without using the cross-coupling resonator structure, the simulation result and the manipulation reveal the potential of this configuration to realize a pseudoelliptic bandpass filtering response.
AB - A tapped combline bandpass filter composed of two coupled stepped-impedance resonators (SIRs) and with tapped lines fed in/out is modeled. The admittance matrix for the entire circuit has been derived from the four-port coupled-line impedance and admittance matrices. The obtained admittance matrix is suitable for the design of a stepped-impedance combline filter, in which the coupled-line length, as opposed to the previous work, is not restricted. The most effective miniaturization for the filter is achieved by setting the critical condition (θ1 = θ2+θ3) for the cases of K>1. Without using the cross-coupling resonator structure, the simulation result and the manipulation reveal the potential of this configuration to realize a pseudoelliptic bandpass filtering response.
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U2 - 10.1002/1098-2760(20001020)27:2<105::AID-MOP7>3.0.CO;2-F
DO - 10.1002/1098-2760(20001020)27:2<105::AID-MOP7>3.0.CO;2-F
M3 - Article
AN - SCOPUS:0034692705
SN - 0895-2477
VL - 27
SP - 105
EP - 109
JO - Microwave and Optical Technology Letters
JF - Microwave and Optical Technology Letters
IS - 2
ER -