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A small bandstop microstrip filter for UWB applications

✍ Scribed by Seokjin Hong; Heejun Lee; Hoon Park; Jaehoon Choi

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
376 KB
Volume
48
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A small bandstop microstrip filter for ultra‐wideband application is proposed. The proposed filter combines the traditional short‐circuited stub highpass filter and the open‐circuited stub bandstop filter on the mitered 50‐Ω microstrip line. The distributed highpass filter scheme is applied to achieve highpass filtering characteristics over ultra‐wideband frequency band (3.1–10.6 GHz) and the open‐circuited stubs are used to obtain the band rejection function at Wireless Local Area Network frequency band. The measured results show that the proposed filter has a wide passband characteristic of 132.12% (2.16–10.57 GHz), with the return loss of less than −10 dB and 3‐dB stop band of 14.37% (5.17–5.97 GHz). The measured group delay is less than 0.65 ns within the passband except the rejection band. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2162–2165, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21887

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