Distributed-element absorptive bandpass filter with a broadband impedance matching

Jongheun Lee, Seunggoo Nam, Juseop Lee

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

    4 Citations (Scopus)

    Abstract

    In this paper, we present a new method for designing absorptive bandpass filters using coupled lines. The new design method and filter structure allow an absorptive bandpass filter to have good impedance matching performance over a wider frequency range in comparison with distributed-element absorptive filters reported in the literature. Closed form design equations are provided so that a filter can be designed in a way to produce a target frequency response. For verifying the presented design approach, a second-order absorptive bandpass filter centered at 2 GHz having 10% fractional bandwidth has been designed, fabricated, and measured. The measurement shows that the return losses (S11 and S22) are overall larger than 10 dB from DC to 3 f0.

    Original languageEnglish
    Title of host publicationIMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages912-915
    Number of pages4
    ISBN (Electronic)9781728168159
    DOIs
    Publication statusPublished - 2020 Aug
    Event2020 IEEE/MTT-S International Microwave Symposium, IMS 2020 - Virtual, Los Angeles, United States
    Duration: 2020 Aug 42020 Aug 6

    Publication series

    NameIEEE MTT-S International Microwave Symposium Digest
    Volume2020-August
    ISSN (Print)0149-645X

    Conference

    Conference2020 IEEE/MTT-S International Microwave Symposium, IMS 2020
    Country/TerritoryUnited States
    CityVirtual, Los Angeles
    Period20/8/420/8/6

    Bibliographical note

    Funding Information:
    ACKNOWLEDGMENT This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2018R1A2B6006095).

    Publisher Copyright:
    © 2020 IEEE.

    Keywords

    • Absorptive filters
    • Distributed-element filters

    ASJC Scopus subject areas

    • Radiation
    • Condensed Matter Physics
    • Electrical and Electronic Engineering

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