Investigation in open circuited metal lines embedded in defected ground structure and its applications to UWB filters

Wen Jeng Lin, Jian Yi Li, Lih Shan Chen, Ding Bing Lin, Mau-phon Houng

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

A novel method for notch implementation in ultra- wideband (UWB) bandpass filter (BPF) using open circuited metal lines embedded in a defected ground structure (DGS) is proposed. Distinct from traditional notch implementation, the proposed method uses the additional metal lines with half waveguide length embedded in defected ground structure to produce additional notch band behavior based on the DGS bandpass behavior. Furthermore, the equivalent circuit model of the proposed UWB BPF with notch implementation is established for explaining the circuit behaviors more explicitly. In this way, the proposed circuit has a very small size, only amounting to 0.41 by 0.22 guided wavelength at the center frequency of 6.85 GHz. The experimental filter has a notchband frequency of 5.5 GHz, with two observable attenuation poles at 1.65 and 11.36 GHz, respectively. The measured BPF insertion loss is less than 1.0 dB throughout the passband of 3.1 to 10.6 GHz, and the variation of group delay is less than 0.2 ns in this band, except for the notched band.

Original languageEnglish
Article number5398850
Pages (from-to)148-150
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume20
Issue number3
DOIs
Publication statusPublished - 2010 Mar 1

Fingerprint

Defected ground structures
notches
Bandpass filters
Ultra-wideband (UWB)
bandpass filters
broadband
filters
Metals
metals
Group delay
Telephone lines
Networks (circuits)
Insertion losses
Equivalent circuits
Poles
Waveguides
equivalent circuits
insertion loss
Wavelength
poles

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

@article{35690bbb6b0d4415a9f46bfe82a451fe,
title = "Investigation in open circuited metal lines embedded in defected ground structure and its applications to UWB filters",
abstract = "A novel method for notch implementation in ultra- wideband (UWB) bandpass filter (BPF) using open circuited metal lines embedded in a defected ground structure (DGS) is proposed. Distinct from traditional notch implementation, the proposed method uses the additional metal lines with half waveguide length embedded in defected ground structure to produce additional notch band behavior based on the DGS bandpass behavior. Furthermore, the equivalent circuit model of the proposed UWB BPF with notch implementation is established for explaining the circuit behaviors more explicitly. In this way, the proposed circuit has a very small size, only amounting to 0.41 by 0.22 guided wavelength at the center frequency of 6.85 GHz. The experimental filter has a notchband frequency of 5.5 GHz, with two observable attenuation poles at 1.65 and 11.36 GHz, respectively. The measured BPF insertion loss is less than 1.0 dB throughout the passband of 3.1 to 10.6 GHz, and the variation of group delay is less than 0.2 ns in this band, except for the notched band.",
author = "Lin, {Wen Jeng} and Li, {Jian Yi} and Chen, {Lih Shan} and Lin, {Ding Bing} and Mau-phon Houng",
year = "2010",
month = "3",
day = "1",
doi = "10.1109/LMWC.2010.2040213",
language = "English",
volume = "20",
pages = "148--150",
journal = "IEEE Microwave and Wireless Components Letters",
issn = "1531-1309",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "3",

}

Investigation in open circuited metal lines embedded in defected ground structure and its applications to UWB filters. / Lin, Wen Jeng; Li, Jian Yi; Chen, Lih Shan; Lin, Ding Bing; Houng, Mau-phon.

In: IEEE Microwave and Wireless Components Letters, Vol. 20, No. 3, 5398850, 01.03.2010, p. 148-150.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Investigation in open circuited metal lines embedded in defected ground structure and its applications to UWB filters

AU - Lin, Wen Jeng

AU - Li, Jian Yi

AU - Chen, Lih Shan

AU - Lin, Ding Bing

AU - Houng, Mau-phon

PY - 2010/3/1

Y1 - 2010/3/1

N2 - A novel method for notch implementation in ultra- wideband (UWB) bandpass filter (BPF) using open circuited metal lines embedded in a defected ground structure (DGS) is proposed. Distinct from traditional notch implementation, the proposed method uses the additional metal lines with half waveguide length embedded in defected ground structure to produce additional notch band behavior based on the DGS bandpass behavior. Furthermore, the equivalent circuit model of the proposed UWB BPF with notch implementation is established for explaining the circuit behaviors more explicitly. In this way, the proposed circuit has a very small size, only amounting to 0.41 by 0.22 guided wavelength at the center frequency of 6.85 GHz. The experimental filter has a notchband frequency of 5.5 GHz, with two observable attenuation poles at 1.65 and 11.36 GHz, respectively. The measured BPF insertion loss is less than 1.0 dB throughout the passband of 3.1 to 10.6 GHz, and the variation of group delay is less than 0.2 ns in this band, except for the notched band.

AB - A novel method for notch implementation in ultra- wideband (UWB) bandpass filter (BPF) using open circuited metal lines embedded in a defected ground structure (DGS) is proposed. Distinct from traditional notch implementation, the proposed method uses the additional metal lines with half waveguide length embedded in defected ground structure to produce additional notch band behavior based on the DGS bandpass behavior. Furthermore, the equivalent circuit model of the proposed UWB BPF with notch implementation is established for explaining the circuit behaviors more explicitly. In this way, the proposed circuit has a very small size, only amounting to 0.41 by 0.22 guided wavelength at the center frequency of 6.85 GHz. The experimental filter has a notchband frequency of 5.5 GHz, with two observable attenuation poles at 1.65 and 11.36 GHz, respectively. The measured BPF insertion loss is less than 1.0 dB throughout the passband of 3.1 to 10.6 GHz, and the variation of group delay is less than 0.2 ns in this band, except for the notched band.

UR - http://www.scopus.com/inward/record.url?scp=77949424396&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77949424396&partnerID=8YFLogxK

U2 - 10.1109/LMWC.2010.2040213

DO - 10.1109/LMWC.2010.2040213

M3 - Article

VL - 20

SP - 148

EP - 150

JO - IEEE Microwave and Wireless Components Letters

JF - IEEE Microwave and Wireless Components Letters

SN - 1531-1309

IS - 3

M1 - 5398850

ER -