Frequency- A nd Bandwidth-Tunable Bandstop Filter Containing Variable Coupling between Transmission Line and Resonator

Seong Wook Jeong; Juseop Lee

doi:10.1109/TMTT.2017.2756963

Frequency- A nd Bandwidth-Tunable Bandstop Filter Containing Variable Coupling between Transmission Line and Resonator

Seong Wook Jeong, Juseop Lee

Department of Computer Science and Engineering

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

25 Citations (Scopus)

Abstract

This paper presents a frequency- A nd bandwidth-tunable bandstop filter using substrate-integrated wave-guide (SIW) resonators. For designing such a filter, this paper also presents a tunable coupling structure between a microstrip line and an SIW resonator for obtaining the bandwidth tuning capability. The coupling structure has two coupling slots between the microstrip line and the resonator, and the phase shift between the two slots determines the overall external coupling value of the resonator. This external coupling value can be controlled by making use of a phase shifter, which in turn makes it possible to adjust the bandwidth of a bandstop filter. A thorough mathematical analysis is shown using the equivalent circuit model of the presented coupling structure, and it has been verified by measuring an SIW resonator containing the presented structure. The presented tunable coupling structure has also been applied to a design of bandstop filter that can be tuned from 2.8 to 3.4 GHz. The measured results at 3.1 GHz show that the bandwidth can be tuned from 0 (all-pass) to 96 MHz reaching the attenuation level of 44 dB.

Original language	English
Article number	8068228
Pages (from-to)	943-953
Number of pages	11
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	66
Issue number	2
DOIs	https://doi.org/10.1109/TMTT.2017.2756963
Publication status	Published - 2018 Feb

Keywords

All-pass filter
bandstop filter
bandwidth tunable
frequency tunable
substrate-integrated waveguide (SIW) resonator

ASJC Scopus subject areas

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1109/TMTT.2017.2756963

Cite this

@article{22776fbc558a4743b19c5b7316c9adcb,

title = "Frequency- A nd Bandwidth-Tunable Bandstop Filter Containing Variable Coupling between Transmission Line and Resonator",

abstract = "This paper presents a frequency- A nd bandwidth-tunable bandstop filter using substrate-integrated wave-guide (SIW) resonators. For designing such a filter, this paper also presents a tunable coupling structure between a microstrip line and an SIW resonator for obtaining the bandwidth tuning capability. The coupling structure has two coupling slots between the microstrip line and the resonator, and the phase shift between the two slots determines the overall external coupling value of the resonator. This external coupling value can be controlled by making use of a phase shifter, which in turn makes it possible to adjust the bandwidth of a bandstop filter. A thorough mathematical analysis is shown using the equivalent circuit model of the presented coupling structure, and it has been verified by measuring an SIW resonator containing the presented structure. The presented tunable coupling structure has also been applied to a design of bandstop filter that can be tuned from 2.8 to 3.4 GHz. The measured results at 3.1 GHz show that the bandwidth can be tuned from 0 (all-pass) to 96 MHz reaching the attenuation level of 44 dB.",

keywords = "All-pass filter, bandstop filter, bandwidth tunable, frequency tunable, substrate-integrated waveguide (SIW) resonator",

author = "Jeong, {Seong Wook} and Juseop Lee",

note = "Funding Information: Manuscript received November 16, 2016; revised April 19, 2017 and July 6, 2017; accepted August 27, 2017. Date of publication October 16, 2017; date of current version February 5, 2018. This work was supported by the Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Science, ICT & Future Planning under Grant NRF-2015R1C1A1A02036754. (Corresponding author: Juseop Lee.) The authors are with the Department of Computer and Communications Engineering, Korea University, Seoul 02841, South Korea (e-mail: juseoplee@ gmail.com). Publisher Copyright: {\textcopyright} 2017 IEEE.",

year = "2018",

month = feb,

doi = "10.1109/TMTT.2017.2756963",

language = "English",

volume = "66",

pages = "943--953",

journal = "IEEE Transactions on Microwave Theory and Techniques",

issn = "0018-9480",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "2",

}

TY - JOUR

T1 - Frequency- A nd Bandwidth-Tunable Bandstop Filter Containing Variable Coupling between Transmission Line and Resonator

AU - Jeong, Seong Wook

AU - Lee, Juseop

N1 - Funding Information: Manuscript received November 16, 2016; revised April 19, 2017 and July 6, 2017; accepted August 27, 2017. Date of publication October 16, 2017; date of current version February 5, 2018. This work was supported by the Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Science, ICT & Future Planning under Grant NRF-2015R1C1A1A02036754. (Corresponding author: Juseop Lee.) The authors are with the Department of Computer and Communications Engineering, Korea University, Seoul 02841, South Korea (e-mail: juseoplee@ gmail.com). Publisher Copyright: © 2017 IEEE.

PY - 2018/2

Y1 - 2018/2

N2 - This paper presents a frequency- A nd bandwidth-tunable bandstop filter using substrate-integrated wave-guide (SIW) resonators. For designing such a filter, this paper also presents a tunable coupling structure between a microstrip line and an SIW resonator for obtaining the bandwidth tuning capability. The coupling structure has two coupling slots between the microstrip line and the resonator, and the phase shift between the two slots determines the overall external coupling value of the resonator. This external coupling value can be controlled by making use of a phase shifter, which in turn makes it possible to adjust the bandwidth of a bandstop filter. A thorough mathematical analysis is shown using the equivalent circuit model of the presented coupling structure, and it has been verified by measuring an SIW resonator containing the presented structure. The presented tunable coupling structure has also been applied to a design of bandstop filter that can be tuned from 2.8 to 3.4 GHz. The measured results at 3.1 GHz show that the bandwidth can be tuned from 0 (all-pass) to 96 MHz reaching the attenuation level of 44 dB.

AB - This paper presents a frequency- A nd bandwidth-tunable bandstop filter using substrate-integrated wave-guide (SIW) resonators. For designing such a filter, this paper also presents a tunable coupling structure between a microstrip line and an SIW resonator for obtaining the bandwidth tuning capability. The coupling structure has two coupling slots between the microstrip line and the resonator, and the phase shift between the two slots determines the overall external coupling value of the resonator. This external coupling value can be controlled by making use of a phase shifter, which in turn makes it possible to adjust the bandwidth of a bandstop filter. A thorough mathematical analysis is shown using the equivalent circuit model of the presented coupling structure, and it has been verified by measuring an SIW resonator containing the presented structure. The presented tunable coupling structure has also been applied to a design of bandstop filter that can be tuned from 2.8 to 3.4 GHz. The measured results at 3.1 GHz show that the bandwidth can be tuned from 0 (all-pass) to 96 MHz reaching the attenuation level of 44 dB.

KW - All-pass filter

KW - bandstop filter

KW - bandwidth tunable

KW - frequency tunable

KW - substrate-integrated waveguide (SIW) resonator

UR - http://www.scopus.com/inward/record.url?scp=85041994267&partnerID=8YFLogxK

U2 - 10.1109/TMTT.2017.2756963

DO - 10.1109/TMTT.2017.2756963

M3 - Article

AN - SCOPUS:85041994267

SN - 0018-9480

VL - 66

SP - 943

EP - 953

JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

IS - 2

M1 - 8068228

ER -

Frequency- A nd Bandwidth-Tunable Bandstop Filter Containing Variable Coupling between Transmission Line and Resonator

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this