Maximally Flat Quarter-Wavelength-Coupled Transmission-Line Filters Using Q Distribution

Journal Article

This paper presents a technique for accurately designing maximally flat quarter-wavelength-coupled transmissionline filters using arbitrary resonant elements. The design procedure currently used, which is based on the lumped-element low-pass prototype, yields a response that is only approximately maximally flat. In addition, the current procedure results in an inaccurate prediction of the total Q for the filter. The technique presented in this paper, herein called the Q-distribution (QD) method, corrects these problems. With the QD method, the designer chooses the number and type of resonant elements and the total Q desired. In turn, the designer is provided with the individual resonator QD, which gives the designer flexibility in selecting the resonator that is most appropriate. © 1997 IEEE.

Full Text

Duke Authors

Cited Authors

  • Drozd, JM; Joines, WT

Published Date

  • 1997

Published In

Volume / Issue

  • 45 / 12 PART 1

Start / End Page

  • 2100 - 2113

International Standard Serial Number (ISSN)

  • 0018-9480

Digital Object Identifier (DOI)

  • 10.1109/22.643744