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A novel microstrip band-pass filter based on hole coupling structure

✍ Scribed by Yan Yuan; Jun Xu; Yan-Qing Xu; Xiao-Chuan Zhang

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
467 KB
Volume
53
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A novel C‐band hole‐coupled bandpass filter with metallized post (or via‐hole) arrays directly embedded in middle of the microstrip line is presented in this letter.The proposed filter removes via‐hole arrays embedded along waveguide section from the half‐mode substrate integrated waveguide filter, while the new concept simplifies the structure of previous filter. Simulated and experimental results show that the proposed filter of this paper has good performances of low insertion loss, return loss, and better rejection characteristics. The insertion loss of measured four‐pole filter is about 0.8 dB, and the return loss is better than −25 dB in the whole passband. Keeping the advantages of excellent performances, the proposed filter can be constructed more conveniently and is suitable for low‐cost planar circuit. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2811–2814, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26373

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