IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
A wideband bandpass filter with improved out-of-band performance
José L. Olvera-CervantesAlonso Corona-ChavezD. V. B. MurthyHumberto Lobato-Morales
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2009 Volume 6 Issue 16 Pages 1143-1147

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Abstract

A novel compact wide bandpass filter is proposed by cascading two square-ring resonators, a quarter wave length short-stub and a quarter wavelength open-stub. This filter offers wide passband, with high out-of-band rejection and suppression of second spurious harmonic. Design procedure of a filter at 1GHz with 50% fractional bandwidth is presented showing good agreement between simulation and experimental results.

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© 2009 by The Institute of Electronics, Information and Communication Engineers
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