Higher order lumped element absorptive low-pass and bandpass filter structures
- Authors
- Lee, Tae-Hak; Lee, Boyoung; Kim, Young-Sik; Wu, Ke; Lee, Juseop
- Issue Date
- 3-7월-2019
- Publisher
- INST ENGINEERING TECHNOLOGY-IET
- Keywords
- low-pass filters; band-pass filters; impedance matching; bandpass filter structures; bandpass absorptive filter circuits; absorptive LPF; conventional reflective filters; low-pass-to-bandpass frequency transformations; third-order LPF; impedance matching performance; higher order lumped-element low-pass absorptive filter circuits; absorptive low-pass filter structure; g-parameters; BPFs; second-order LPF; design method
- Citation
- IET MICROWAVES ANTENNAS & PROPAGATION, v.13, no.8, pp.1166 - 1173
- Indexed
- SCIE
SCOPUS
- Journal Title
- IET MICROWAVES ANTENNAS & PROPAGATION
- Volume
- 13
- Number
- 8
- Start Page
- 1166
- End Page
- 1173
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/64151
- DOI
- 10.1049/iet-map.2018.5479
- ISSN
- 1751-8725
- Abstract
- Here, the authors present a class of lumped-element low-pass and bandpass absorptive filter circuits. To begin with, the authors discuss a new type of absorptive low-pass filter (LPF) structure that has an excellent impedance matching performance in both passband and stopband. This work provides low-pass prototype values for the proposed absorptive LPFs in terms of those for the conventional reflective filters, namely g-parameters, so that the new type of absorptive LPF can be designed in a straightforward manner. In addition, it is shown that traditional low-pass-to-bandpass frequency transformations can be applied to the absorptive low-pass prototype cases in the design of absorptive bandpass filters (BPFs). Second- and third-order LPF and BPFs are designed and measured to verify the new type of absorptive filter and its design method.
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