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A compact UWB bandpass filter using a center-tapped composite right/left-handed transmission-line zeroth-order resonator

✍ Scribed by J. Ju; S. Kahng

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
226 KB
Volume
53
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

The design of a new UWB bandpass filter is proposed, which has a center tapped microstrip composite right/left‐handed transmission‐line zeroth‐order resonator (CRLH‐TL ZOR). In an attempt to reduce the size, instead of the conventional periodic CRLH‐TL, only one cell ZOR geometry is adopted and optimized to have the target UWB bandpass filtering. Along with this subwavelength filter, the matching parts working as a stepped impedance low‐pass filter are suggested for good matching and stopband enhancement. The proposed filter is shown to have the overall size of “0.69λ~g~ × 0.73λ~g~,” the fractional bandwidth over 100%, the insertion loss much less than 1 dB, and the flat group delay with an acceptable return loss performance in the predicted and measured results. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26170

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