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An ultra-wide bandpass filter with good out-of-band performance

✍ Scribed by Zhong Li; Guang-Ming Wang; Chen-Xin Zhang; Ge-Nong Long

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

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✦ Synopsis

Abstract

An ultra‐wideband microstrip filter with good out‐of‐band performance is designed and demonstrated. The filter design is based on a circuit model for an optimum short‐circuited stub transmission‐line filter whose unit elements or connecting lines are nonredundant. Substituting the connecting lines by the lowpass filter using stepped impedance hairpin resonator, the undesired spurious bands can be efficiently suppressed, and the designed filter length is reduced. According to the different requirements, the broadband bandpass and lowpass filter can be independently designed and modified, which makes the filter more convenient and easily implemented. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1735–1737, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23517

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