An analysis of a DGS-inserted stub resonator and its application to an optimum BSF

Imseob Shin, Sangyeol Oh, Changwon Lee, Koohyung Kwon, Young Sik Kim

Research output: Contribution to journalArticle

Abstract

A novel defected ground structure (DGS)-inserted stub (DIS) resonator is proposed. The proposed DIS resonator features a typical dumbbell-shaped DGS inserted into an conventional open-circuited stub (OCS) resonator, and it is modeled by a series LC resonator. The inserted DGS can suppress a harmonic and extend an upper passband. Therefore, the proposed DIS resonator to generate a resonance at 2.0 GHz keeps the upper passband up to 8.0 GHz or higher, while the OCS resonator with the same resonance gives rise to the harmonic at 5.78 GHz. These properties are investigated through EM simulation. Moreover, in order to verify the applicability of the proposed DIS resonator to microwave filters, two optimum bandstop filters (BSFs) with the same stopband at 2.0 GHz using the proposed DIS and OCS resonators are fabricated and measured, respectively. Compared to the optimum BSF using the OCS resonator, the optimum BSF using the proposed DIS resonator shows two notable improvements: a 50% increase in the upper passband and a 15% reduction in the size.

Original languageEnglish
Pages (from-to)1199-1205
Number of pages7
JournalMicrowave and Optical Technology Letters
Volume60
Issue number5
DOIs
Publication statusPublished - 2018 May 1

Fingerprint

bandstop filters
Defected ground structures
Notch filters
Resonators
resonators
microwave filters
Microwave filters
harmonics

Keywords

  • bandstop filter (BSF)
  • defected ground structure (DGS)
  • electromagnetic bandgap (EBG)
  • stub resonator

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

An analysis of a DGS-inserted stub resonator and its application to an optimum BSF. / Shin, Imseob; Oh, Sangyeol; Lee, Changwon; Kwon, Koohyung; Kim, Young Sik.

In: Microwave and Optical Technology Letters, Vol. 60, No. 5, 01.05.2018, p. 1199-1205.

Research output: Contribution to journalArticle

Shin, Imseob ; Oh, Sangyeol ; Lee, Changwon ; Kwon, Koohyung ; Kim, Young Sik. / An analysis of a DGS-inserted stub resonator and its application to an optimum BSF. In: Microwave and Optical Technology Letters. 2018 ; Vol. 60, No. 5. pp. 1199-1205.
@article{a5340492f7b3437f8ef8c148fd06e8eb,
title = "An analysis of a DGS-inserted stub resonator and its application to an optimum BSF",
abstract = "A novel defected ground structure (DGS)-inserted stub (DIS) resonator is proposed. The proposed DIS resonator features a typical dumbbell-shaped DGS inserted into an conventional open-circuited stub (OCS) resonator, and it is modeled by a series LC resonator. The inserted DGS can suppress a harmonic and extend an upper passband. Therefore, the proposed DIS resonator to generate a resonance at 2.0 GHz keeps the upper passband up to 8.0 GHz or higher, while the OCS resonator with the same resonance gives rise to the harmonic at 5.78 GHz. These properties are investigated through EM simulation. Moreover, in order to verify the applicability of the proposed DIS resonator to microwave filters, two optimum bandstop filters (BSFs) with the same stopband at 2.0 GHz using the proposed DIS and OCS resonators are fabricated and measured, respectively. Compared to the optimum BSF using the OCS resonator, the optimum BSF using the proposed DIS resonator shows two notable improvements: a 50{\%} increase in the upper passband and a 15{\%} reduction in the size.",
keywords = "bandstop filter (BSF), defected ground structure (DGS), electromagnetic bandgap (EBG), stub resonator",
author = "Imseob Shin and Sangyeol Oh and Changwon Lee and Koohyung Kwon and Kim, {Young Sik}",
year = "2018",
month = "5",
day = "1",
doi = "10.1002/mop.31136",
language = "English",
volume = "60",
pages = "1199--1205",
journal = "Microwave and Optical Technology Letters",
issn = "0895-2477",
publisher = "John Wiley and Sons Inc.",
number = "5",

}

TY - JOUR

T1 - An analysis of a DGS-inserted stub resonator and its application to an optimum BSF

AU - Shin, Imseob

AU - Oh, Sangyeol

AU - Lee, Changwon

AU - Kwon, Koohyung

AU - Kim, Young Sik

PY - 2018/5/1

Y1 - 2018/5/1

N2 - A novel defected ground structure (DGS)-inserted stub (DIS) resonator is proposed. The proposed DIS resonator features a typical dumbbell-shaped DGS inserted into an conventional open-circuited stub (OCS) resonator, and it is modeled by a series LC resonator. The inserted DGS can suppress a harmonic and extend an upper passband. Therefore, the proposed DIS resonator to generate a resonance at 2.0 GHz keeps the upper passband up to 8.0 GHz or higher, while the OCS resonator with the same resonance gives rise to the harmonic at 5.78 GHz. These properties are investigated through EM simulation. Moreover, in order to verify the applicability of the proposed DIS resonator to microwave filters, two optimum bandstop filters (BSFs) with the same stopband at 2.0 GHz using the proposed DIS and OCS resonators are fabricated and measured, respectively. Compared to the optimum BSF using the OCS resonator, the optimum BSF using the proposed DIS resonator shows two notable improvements: a 50% increase in the upper passband and a 15% reduction in the size.

AB - A novel defected ground structure (DGS)-inserted stub (DIS) resonator is proposed. The proposed DIS resonator features a typical dumbbell-shaped DGS inserted into an conventional open-circuited stub (OCS) resonator, and it is modeled by a series LC resonator. The inserted DGS can suppress a harmonic and extend an upper passband. Therefore, the proposed DIS resonator to generate a resonance at 2.0 GHz keeps the upper passband up to 8.0 GHz or higher, while the OCS resonator with the same resonance gives rise to the harmonic at 5.78 GHz. These properties are investigated through EM simulation. Moreover, in order to verify the applicability of the proposed DIS resonator to microwave filters, two optimum bandstop filters (BSFs) with the same stopband at 2.0 GHz using the proposed DIS and OCS resonators are fabricated and measured, respectively. Compared to the optimum BSF using the OCS resonator, the optimum BSF using the proposed DIS resonator shows two notable improvements: a 50% increase in the upper passband and a 15% reduction in the size.

KW - bandstop filter (BSF)

KW - defected ground structure (DGS)

KW - electromagnetic bandgap (EBG)

KW - stub resonator

UR - http://www.scopus.com/inward/record.url?scp=85045125719&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85045125719&partnerID=8YFLogxK

U2 - 10.1002/mop.31136

DO - 10.1002/mop.31136

M3 - Article

VL - 60

SP - 1199

EP - 1205

JO - Microwave and Optical Technology Letters

JF - Microwave and Optical Technology Letters

SN - 0895-2477

IS - 5

ER -