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Design of a dual-mode bandpass filter with wide stopband performance for GPS application

✍ Scribed by Hon Kuan; Heng-Yau Pan

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 220 KB
Volume: 50
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.23123

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✦ Synopsis

Abstract

In this article, we propose a dual‐mode bandpass filter (BPF) at 1.575 GHz using periodic meander slotted ground structures (M‐SGSs) which are etched on the ground plane for spurious suppression. First, single M‐SGS is analyzed. Second, the M‐SGSs are used to provide a good stopband‐rejection to the second harmonics of the dual‐mode BPF with level of over −40 dB. Finally, a dual‐mode BPF with improved stopband is designed, fabricated, and measured. The experimental results of the fabricated filter measured by the network analyzer have good agreement with the simulation results. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 445–447, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23123

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