Implementation of Distributed-Element Foster Section and Its Applications to Bandpass Filters

Jongheun Lee, Juseop Lee

Research output: Contribution to journalArticlepeer-review

Abstract

An accurate method to implement a bandpass-domain coupled-line Foster section is presented. Two types of practical coupled-line structures are presented and closed-form equations for their design parameters are given in terms of lowpass prototype parameters, reference impedance, and fractional bandwidth so that one can readily use them in various filter designs. The design process of a bandpass filter using Foster sections is described via an example.

Original languageEnglish
JournalIEEE Microwave and Wireless Components Letters
DOIs
Publication statusAccepted/In press - 2021

Keywords

  • Degenerate Brune section
  • Foster section.
  • Impedance
  • Microstrip
  • Microwave circuits
  • Microwave theory and techniques
  • Passband
  • Prototypes
  • Wireless communication

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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