Abstract
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.
Original language | English |
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Pages (from-to) | 105-109 |
Number of pages | 5 |
Journal | Microwave and Optical Technology Letters |
Volume | 27 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2000 Oct 20 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering