Constant-absolute-bandwidth frequency-tunable half-mode SIW filter containing no tunable coupling structures

Seunggoo Nam, Boyoung Lee, Juseop Lee

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

    7 Citations (Scopus)

    Abstract

    A new half-mode frequency-tunable SIW (substrate-integrated waveguide) bandpass filter with a constant absolute bandwidth is presented in this paper. For achieving the constant bandwidth, we have developed new external and internal coupling structures capable of exhibiting specified coupling values over the frequency tuning range of the presented filter. Hence, the presented filter employs no tuning components in the coupling structures and this avoids the insertion loss increase due to tuning components. For verification, a second-order filter has been designed, fabricated, and measured. The filter has the insertion loss smaller than 2.0 dB over the frequency tuning range from 1.85 GHz to 2.3 GHz. The bandwidth slightly varies from 136 MHz to 142 MHz.

    Original languageEnglish
    Title of host publication2017 IEEE MTT-S International Microwave Symposium, IMS 2017
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages267-270
    Number of pages4
    ISBN (Electronic)9781509063604
    DOIs
    Publication statusPublished - 2017 Oct 4
    Event2017 IEEE MTT-S International Microwave Symposium, IMS 2017 - Honololu, United States
    Duration: 2017 Jun 42017 Jun 9

    Publication series

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

    Other

    Other2017 IEEE MTT-S International Microwave Symposium, IMS 2017
    Country/TerritoryUnited States
    CityHonololu
    Period17/6/417/6/9

    Bibliographical note

    Funding Information:
    ACKNOWLEDGMENTS This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Science, ICT & Future Planning(NRF-2015R1C1A1A02036754).

    Publisher Copyright:
    © 2017 IEEE.

    Keywords

    • Absolute bandwidth
    • Bandpass filter
    • Half-mode
    • SIW
    • Tunable filter

    ASJC Scopus subject areas

    • Radiation
    • Condensed Matter Physics
    • Electrical and Electronic Engineering

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