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

doi:10.1002/mop.22979

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

Graduate Institute of Communication Engineering

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	13-15
Number of pages	3
Journal	Microwave and Optical Technology Letters
Volume	50
Issue number	1
DOIs	https://doi.org/10.1002/mop.22979
Publication status	Published - 2008 Jan 1

All Science Journal Classification (ASJC) codes

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

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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.",

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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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