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Miniaturized dual-mode bandpass filter using meander square-ring resonator

✍ Scribed by Chien-Hung Chen; Hua-Ming Chen; Yi-Fang Lin; Cheng-Fu Yang

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
150 KB
Volume
50
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A dual‐mode bandpass filter (BPF) using the degenerate modes of a meander square‐ring structure printed on the high‐permittivity substrate is proposed. The dual‐mode resonator is based on a square‐ring loaded with two meander strips at the coupling sides. The filter is printed on the Al~2~O~3~ substrate with a permittivity of 9.8 and could be easily integrated with RF circuits. Besides its simple structure, the filter shows low insertion loss and small size, owing to the high‐permittivity substrate used. The proposed filter shows a 6.3% bandwidth at the central frequency 2406 MHz, and it also provides transmission zeros on both sides of the bandwidth. Experimental results are in good agreement with simulated values. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2117–2119, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23578

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