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A novel compact bandpass filter using microstrip defected ground structure

✍ Scribed by Jin Shi; JiaLin Li

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
205 KB
Volume
48
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A novel compact microstrip bandpass filter using a dumbbell‐shaped defected ground structure (DGS) etched in ground plane under microstrip line is proposed. The bandpass characteristic is easy to obtain by adjusting the bandgaps of the DGS resonators. The filter has the advantages of compact size, high selectivity, and high out‐of‐band suppression due to the transmission zeros. The theoretical and experimental results of the proposed bandpass filter are presented and show good agreement. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 281–283, 2006; Published online in Wiley InterScience (www. interscience.wiley.com). DOI 10.1002/mop.21327

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