Planar dual- and tri-band bandpass filters using single improved ring resonator and simple feed scheme


Journal Article

A planar single improved dual-mode ring resonator loaded by four mushroom-shaped stubs based on a simple feed scheme is presented for design of dual- and tri-band bandpass filters (BPFs). The simple pair of feed lines with source-load coupling is used to not only feed the ring resonator but also generate the higher desired third passband when the length of feed lines changes. That is, a desired dual- or tri-band BPF can be designed based on the same single-ring resonator. For demonstration purpose, two experimental example filters have been fabricated and implemented. The simulated and measured results are presented and show good agreements. © 2014 Wiley Periodicals, Inc.

Full Text

Duke Authors

Cited Authors

  • Xu, KD; Zhang, YH; Fan, Y; Li, JLW; Joines, WT; Liu, QH

Published Date

  • March 1, 2014

Published In

Volume / Issue

  • 56 / 3

Start / End Page

  • 574 - 577

Electronic International Standard Serial Number (EISSN)

  • 1098-2760

International Standard Serial Number (ISSN)

  • 0895-2477

Digital Object Identifier (DOI)

  • 10.1002/mop.28159

Citation Source

  • Scopus