Dual-band filter design of combined half and quarter wavelength sirs for WLAN applications

Pow Wen Chen, Hao Hung Ho, Min Hua Ho, Ching Her Lee

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This article presents a dual-band bandpass filter composed of λ/2 and λ/4 stepped impedance resonators for the wireless local area network applications. The filter covers both the operating frequencies of 2.45 GHz and 5.2-5.8 GHz. The doubly parallel-coupling mechanism is used in the filter design to reduce the insertion losses and to gain a wider bandwidth. The cross coupling configuration and the tapped-line I/O feed are adopted in this filter design to provide the attenuation poles for improving the signal selectivity and stopband rejection levels. Experiments were conducted to verify the circuit performance.

Original languageEnglish
Pages (from-to)13-15
Number of pages3
JournalMicrowave and Optical Technology Letters
Volume50
Issue number1
DOIs
Publication statusPublished - 2008 Jan 1

Fingerprint

Wireless local area networks (WLAN)
filters
Wavelength
Insertion losses
Bandpass filters
wavelengths
Resonators
Poles
local area networks
cross coupling
bandpass filters
Bandwidth
insertion loss
rejection
Networks (circuits)
poles
selectivity
attenuation
resonators
impedance

All Science Journal Classification (ASJC) codes

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

Cite this

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Dual-band filter design of combined half and quarter wavelength sirs for WLAN applications. / Chen, Pow Wen; Ho, Hao Hung; Ho, Min Hua; Lee, Ching Her.

In: Microwave and Optical Technology Letters, Vol. 50, No. 1, 01.01.2008, p. 13-15.

Research output: Contribution to journalArticle

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AB - This article presents a dual-band bandpass filter composed of λ/2 and λ/4 stepped impedance resonators for the wireless local area network applications. The filter covers both the operating frequencies of 2.45 GHz and 5.2-5.8 GHz. The doubly parallel-coupling mechanism is used in the filter design to reduce the insertion losses and to gain a wider bandwidth. The cross coupling configuration and the tapped-line I/O feed are adopted in this filter design to provide the attenuation poles for improving the signal selectivity and stopband rejection levels. Experiments were conducted to verify the circuit performance.

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