High-selectivity wideband balanced bandpass filters using symmetrical multi-mode resonators

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

13 Scopus Citations
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Author(s)

  • Wenjie Feng
  • Wenquan Che
  • Liming Gu
  • Quan Xue

Detail(s)

Original languageEnglish
Pages (from-to)1005-1015
Journal / PublicationIET Microwaves, Antennas and Propagation
Volume7
Issue number12
Publication statusPublished - 2013

Abstract

Two novel high-selectivity wideband balanced bandpass filters using symmetrical multi-mode resonators are presented. The proposed novel multi-mode resonator is used to realise a six-order wide passband in the differential mode. In addition, wide stopbands with insertion loss greater than 15 and 20 dB for the commode mode (0-18.5 GHz, 0-19 GHz) can also be achieved by the multi-mode resonators. The even/odd-modes of the symmetrical multi-mode resonators can be adjusted by changing the characteristic impedance of the shorted/open stubs. Two planar wideband balanced filters with 3 dB fractional bandwidths of 67.6 and 63.7% are designed and fabricated. The theoretical and measured results are in good agreement and show good in-band filtering performances and high selectivity. © The Institution of Engineering and Technology 2013.

Citation Format(s)

High-selectivity wideband balanced bandpass filters using symmetrical multi-mode resonators. / Feng, Wenjie; Che, Wenquan; Gu, Liming; Xue, Quan.

In: IET Microwaves, Antennas and Propagation, Vol. 7, No. 12, 2013, p. 1005-1015.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review