Bandpass filter using discriminating coupling for extended out-of-band suppression

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Yuan Chun Li
  • Xiu Yin Zhang
  • Quan Xue

Detail(s)

Original languageEnglish
Article number5481980
Pages (from-to)369-371
Journal / PublicationIEEE Microwave and Wireless Components Letters
Volume20
Issue number7
Publication statusPublished - Jul 2010

Abstract

This letter presents two bandpass filters with wide out-of-band suppression using multiple different resonators and discriminating coupling. By utilizing half- and quarter-wavelength resonators, the second harmonic can be eliminated. Discriminating coupling is used to obtain zero coupling coefficient at the third harmonic, whereas the coupling in the passband can be tuned to desired values. The proposed filter could obtain 30 dB rejection level in the stopband from 1.2f0 to 3.8f0. Meanwhile, the filter is simple to design and easy to fabricate. The theoretical analysis of the proposed filter is given and two demonstration filters are fabricated and measured. The simulated and measured results are presented and good agreements are observed, which confirm the proposed method. © 2010 IEEE.

Research Area(s)

  • Bandpass filter(BPF), discriminating coupling, multiple different resonators, out-of-band suppression

Citation Format(s)

Bandpass filter using discriminating coupling for extended out-of-band suppression. / Li, Yuan Chun; Zhang, Xiu Yin; Xue, Quan.
In: IEEE Microwave and Wireless Components Letters, Vol. 20, No. 7, 5481980, 07.2010, p. 369-371.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review