Frequency-Tunable Tri-Function Filter

Tae Hak Lee; Boyoung Lee; Seunggoo Nam; Young Sik Kim; Juseop Lee

doi:10.1109/TMTT.2017.2716931

Frequency-Tunable Tri-Function Filter

Tae Hak Lee, Boyoung Lee, Seunggoo Nam, Young Sik Kim, Juseop Lee

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

33 Citations (Scopus)

Abstract

In this paper, we present a reconfigurable filter capable of having three different responses, such as bandstop, bandpass, and all-pass responses. For designing the tri-function filter, we have developed a new topology containing coupled resonators and a switch-embedded transmission line running from the input to output ports. A bandpass response can be obtained by opening the switches embedded in the transmission line. On the other hand, closing the switches produces bandstop and all-pass responses. The details of the coupling structure design satisfying three sets of the coupling coefficients for the three responses are presented. In addition, we also discuss in detail an approach for incorporating the measured parameters of the nonideal switch in our filter design. For demonstration, a frequency-tunable tri-function filter has been designed using substrate-integrated waveguide resonators. It is shown that the designed filter is able to exhibit three responses over a 1.2:1 frequency tuning range.

Original language	English
Article number	7961177
Pages (from-to)	4584-4592
Number of pages	9
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	65
Issue number	11
DOIs	https://doi.org/10.1109/TMTT.2017.2716931
Publication status	Published - 2017 Nov

Bibliographical note

Funding Information:
Dr. Lee was a recipient of the Post-Doctoral Research Fellowship from the National Research Foundation.

Funding Information:
Manuscript received November 1, 2016; revised May 23, 2017; accepted May 26, 2017. Date of publication June 28, 2017; date of current version November 3, 2017. 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 under Grant NRF-2015R1C1A1A02036754. (Corresponding author: Juseop Lee.) T.-H. Lee is with the Polygrames Research Center, École Polytechnique de Montréal, Montreal, QC H3T 1J4, Canada.

Publisher Copyright:
© 1963-2012 IEEE.

Keywords

All-pass filter
bandpass filter
bandstop filter
filter synthesis
reconfigurable filter

ASJC Scopus subject areas

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TMTT.2017.2716931

Cite this

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title = "Frequency-Tunable Tri-Function Filter",

abstract = "In this paper, we present a reconfigurable filter capable of having three different responses, such as bandstop, bandpass, and all-pass responses. For designing the tri-function filter, we have developed a new topology containing coupled resonators and a switch-embedded transmission line running from the input to output ports. A bandpass response can be obtained by opening the switches embedded in the transmission line. On the other hand, closing the switches produces bandstop and all-pass responses. The details of the coupling structure design satisfying three sets of the coupling coefficients for the three responses are presented. In addition, we also discuss in detail an approach for incorporating the measured parameters of the nonideal switch in our filter design. For demonstration, a frequency-tunable tri-function filter has been designed using substrate-integrated waveguide resonators. It is shown that the designed filter is able to exhibit three responses over a 1.2:1 frequency tuning range.",

keywords = "All-pass filter, bandpass filter, bandstop filter, filter synthesis, reconfigurable filter",

author = "Lee, {Tae Hak} and Boyoung Lee and Seunggoo Nam and Kim, {Young Sik} and Juseop Lee",

note = "Funding Information: Dr. Lee was a recipient of the Post-Doctoral Research Fellowship from the National Research Foundation. Funding Information: Manuscript received November 1, 2016; revised May 23, 2017; accepted May 26, 2017. Date of publication June 28, 2017; date of current version November 3, 2017. 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 under Grant NRF-2015R1C1A1A02036754. (Corresponding author: Juseop Lee.) T.-H. Lee is with the Polygrames Research Center, {\'E}cole Polytechnique de Montr{\'e}al, Montreal, QC H3T 1J4, Canada. Publisher Copyright: {\textcopyright} 1963-2012 IEEE.",

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Frequency-Tunable Tri-Function Filter

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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