Frequency-Tunable Low-Q Lumped-Element Resonator Bandstop Filter With High Attenuation

Tae Hak Lee; Byungguk Kim; Kangho Lee; William J. Chappell; Juseop Lee

doi:10.1109/TMTT.2016.2604318

Frequency-Tunable Low-Q Lumped-Element Resonator Bandstop Filter With High Attenuation

Tae Hak Lee, Byungguk Kim, Kangho Lee, William J. Chappell, Juseop Lee

Department of Computer Science and Engineering

Research output: Contribution to journal › Article › peer-review

38 Citations (Scopus)

Abstract

This paper presents a new lumped-element absorptive bandstop filter topology. It exhibits infinite attenuation at the center frequency and no reflection regardless of the quality factor (Q-factor) of the resonators. The new topology exhibits the absorptive characteristic with extremely low-Q resonators, whereas an absorptive bandstop filter topology in the literature cannot be used for such resonators. This superiority of the new filter topology is verified by comparing it with the topology in the literature. The filter designed using the new topology can change its center frequency by tuning only the capacitor values of the resonators. A 1.6:1 frequency tuning range maintaining the absorptive characteristic has been obtained by measurement.

Original language	English
Article number	7567600
Pages (from-to)	3549-3556
Number of pages	8
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	64
Issue number	11
DOIs	https://doi.org/10.1109/TMTT.2016.2604318
Publication status	Published - 2016 Nov

Keywords

Bandstop filter
filter synthesis
frequency tunable filter
resonator filter

ASJC Scopus subject areas

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TMTT.2016.2604318

Cite this

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title = "Frequency-Tunable Low-Q Lumped-Element Resonator Bandstop Filter With High Attenuation",

abstract = "This paper presents a new lumped-element absorptive bandstop filter topology. It exhibits infinite attenuation at the center frequency and no reflection regardless of the quality factor (Q-factor) of the resonators. The new topology exhibits the absorptive characteristic with extremely low-Q resonators, whereas an absorptive bandstop filter topology in the literature cannot be used for such resonators. This superiority of the new filter topology is verified by comparing it with the topology in the literature. The filter designed using the new topology can change its center frequency by tuning only the capacitor values of the resonators. A 1.6:1 frequency tuning range maintaining the absorptive characteristic has been obtained by measurement.",

keywords = "Bandstop filter, filter synthesis, frequency tunable filter, resonator filter",

author = "Lee, {Tae Hak} and Byungguk Kim and Kangho Lee and Chappell, {William J.} and Juseop Lee",

note = "Funding Information: This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (NRF-2015R1C1A1A02036754). Publisher Copyright: {\textcopyright} 2016 IEEE.",

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AU - Kim, Byungguk

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AU - Chappell, William J.

AU - Lee, Juseop

N1 - Funding Information: This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (NRF-2015R1C1A1A02036754). Publisher Copyright: © 2016 IEEE.

PY - 2016/11

Y1 - 2016/11

N2 - This paper presents a new lumped-element absorptive bandstop filter topology. It exhibits infinite attenuation at the center frequency and no reflection regardless of the quality factor (Q-factor) of the resonators. The new topology exhibits the absorptive characteristic with extremely low-Q resonators, whereas an absorptive bandstop filter topology in the literature cannot be used for such resonators. This superiority of the new filter topology is verified by comparing it with the topology in the literature. The filter designed using the new topology can change its center frequency by tuning only the capacitor values of the resonators. A 1.6:1 frequency tuning range maintaining the absorptive characteristic has been obtained by measurement.

AB - This paper presents a new lumped-element absorptive bandstop filter topology. It exhibits infinite attenuation at the center frequency and no reflection regardless of the quality factor (Q-factor) of the resonators. The new topology exhibits the absorptive characteristic with extremely low-Q resonators, whereas an absorptive bandstop filter topology in the literature cannot be used for such resonators. This superiority of the new filter topology is verified by comparing it with the topology in the literature. The filter designed using the new topology can change its center frequency by tuning only the capacitor values of the resonators. A 1.6:1 frequency tuning range maintaining the absorptive characteristic has been obtained by measurement.

KW - Bandstop filter

KW - filter synthesis

KW - frequency tunable filter

KW - resonator filter

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Frequency-Tunable Low-Q Lumped-Element Resonator Bandstop Filter With High Attenuation

Abstract

Keywords

ASJC Scopus subject areas

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