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Design of the compact SIR-based bandpass filter with a wide stopband

✍ Scribed by Heng-Yau Pan; Hung-Wei Wu; Min-Hang Weng

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

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✦ Synopsis

Abstract

Compact coupled stepped impedance resonators (SIRs) are used to design the bandpass filter (BPF) with a wide stopband. In the filter design, two different physical dimensions of the SIRs are used to produce proper required coupling for the frequency response with wide spurious suppression. The theory and guidelines for selecting the geometric parameters of SIRs are clearly presented in this paper. The BPF designed with center frequency (f~0~) at 2.45 GHz has a stopband extended up to 20 GHz (8.16__f__~0~) and an average rejection level better than 25 dB. Good agreement between the electromagnetic simulation and measurement is observed. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 948–952, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23261

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