Topology and Rigorous Design Method for Reflectionless Bandstop Filter

Jongheun Lee, Boyoung Lee, Seunggoo Nam, Juseop Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A new filter topology for a second-order absorptive bandstop filter with Butterworth response is presented in this paper. Closed-form design equations for having a Butterworth transmission response and no reflection at all frequencies are also provided. Hence, an absorptive bandstop filter can be designed such that its transmission response is identical to the one of a conventional reflective filter. For verifying the presented filter topology and design formulas, an absorptive bandstop filter with 10% fractional bandwidth centered at 190 MHz has been designed, fabricated, and measured. The measurement shows that the fabricated filter has the return loss larger than 15 dB in the stopband and the Butterworth response in the power transmission.

Original languageEnglish
Title of host publication2019 49th European Microwave Conference, EuMC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages456-459
Number of pages4
ISBN (Electronic)9782874870552
DOIs
Publication statusPublished - 2019 Oct
Event49th European Microwave Conference, EuMC 2019 - Paris, France
Duration: 2019 Oct 12019 Oct 3

Publication series

Name2019 49th European Microwave Conference, EuMC 2019

Conference

Conference49th European Microwave Conference, EuMC 2019
CountryFrance
CityParis
Period19/10/119/10/3

Keywords

  • absorptive bandstop filter
  • Butterworth filter
  • infinite return loss

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Instrumentation

Fingerprint Dive into the research topics of 'Topology and Rigorous Design Method for Reflectionless Bandstop Filter'. Together they form a unique fingerprint.

  • Cite this

    Lee, J., Lee, B., Nam, S., & Lee, J. (2019). Topology and Rigorous Design Method for Reflectionless Bandstop Filter. In 2019 49th European Microwave Conference, EuMC 2019 (pp. 456-459). [8910927] (2019 49th European Microwave Conference, EuMC 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/EuMC.2019.8910927