A design of microstrip bandpass filter with narrow bandwidth using DGS/DMS for WLAN

Arjun Kumar*, M. V. Kartikeyan

*Corresponding author for this work

Research output: Chapter in Book or Report/Conference proceedingConference Proceedingpeer-review

5 Citations (Scopus)

Abstract

In this paper, a compact microstrip bandpass filter is designed using defected ground structure (DGS) with narrow bandwidth. Here a 50+ quarter wave microstrip line is used for designing the bandpass filter. A circular head dumbbell shaped DGS in the ground plane of a microstrip line is used which provides the bandstop characteristics. Two series gap slot is introduced for achieving the bandpass characteristics in the conducting strip. These slots in conducting strip are also called defected microstrip structure (DMS). This arrangement provides better coupling in the pass band. In this paper no stubs and via are used. The bandwidth of the filter is 500 MHz and insertion loss less than 0.5 dB in passband at 5.4 GHz. The measured insertion loss (S 21) is 0.6 dB at the center frequency 5.4 GHz with a bandwidth of 500 MHz which is good in agreement with measured results after the fabrications)

Original languageEnglish
Title of host publication2013 National Conference on Communications, NCC 2013
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781467359528
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event2013 National Conference on Communications, NCC 2013 - New Delhi, India
Duration: 15 Feb 201317 Feb 2013

Publication series

Name2013 National Conference on Communications, NCC 2013
ISSN (Print)1550-3607

Conference

Conference2013 National Conference on Communications, NCC 2013
Country/TerritoryIndia
CityNew Delhi
Period15/02/1317/02/13

Keywords

  • Bandpass Filters
  • DGS/DMS

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