A compact wide bandpass filter with good selectively


Journal Article

© 2017, Electromagnetics Academy. All rights reserved. A compact Ku-band bandpass filter (BPF) with wide passband, compact size and high selectively is presented. The presented BPF is composed of two quarter-wavelength resonators and a dual-mode resonator, resulting in a compact circuit size. The transmission zeros (TZs) located at the lower and upper stopband are achieved by the mixed electromagnetic (EM) coupling and dual-mode resonator, respectively, resulting in a high frequency selectively. The measured results show minimum in-band insertion loss, fractional bandwidth and variation of group delay to be 0.9 dB, 36.2% and 0.12 ns, respectively. Also, the stopband suppression is greater than 28 dB from 5 to 10.3GHz and 30 dB from 19.5 to 29.5GHz. The effective circuit size of the filter is 8.43×2.28mm2 (0.63λg ×0.17λg, where λg is the guide wavelength of 15.1GHz).

Full Text

Duke Authors

Cited Authors

  • Shen, M; Lin, X; Ai, J; Tang, C; Joines, WT

Published Date

  • January 1, 2017

Published In

Volume / Issue

  • 77 /

Start / End Page

  • 49 - 56

Electronic International Standard Serial Number (EISSN)

  • 1530-9681

International Standard Serial Number (ISSN)

  • 1937-8718

Digital Object Identifier (DOI)

  • 10.2528/PIERC17053103

Citation Source

  • Scopus