UWB bandpass filter with notched band and improved upper stopband characteristics

Jae Kwan Lee, Young Sik Kim

Research output: Contribution to journalArticle

Abstract

In this article, we propose a novel ultra-wideband bandpass filter with an improved upper stopband characteristic and a notched band. The proposed BPF is composed of a coupled double-step impedance resonator, an interdigital slot, a dumbbell-shaped defected ground, and an open-loop defected ground. The measured results show a minimum insertion loss of 0.61 dB at 7.02 GHz except about 5 GHz for the WLAN band and a wide upper stopband with more than 30 dB attenuation at up to 20 GHz. The group delay variation in the passband is less than 0.4 ns. In addition, the proposed BPF has a compact size.

Original languageEnglish
Pages (from-to)2520-2522
Number of pages3
JournalMicrowave and Optical Technology Letters
Volume52
Issue number11
DOIs
Publication statusPublished - 2010 Nov 1

Fingerprint

Group delay
Insertion losses
Bandpass filters
bandpass filters
Wireless local area networks (WLAN)
Ultra-wideband (UWB)
Resonators
insertion loss
slots
attenuation
resonators
impedance
broadband

Keywords

  • bandpass filter
  • defected ground structure
  • interdigital slot
  • notched band
  • ultra wide band

ASJC Scopus subject areas

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

Cite this

UWB bandpass filter with notched band and improved upper stopband characteristics. / Lee, Jae Kwan; Kim, Young Sik.

In: Microwave and Optical Technology Letters, Vol. 52, No. 11, 01.11.2010, p. 2520-2522.

Research output: Contribution to journalArticle

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