Conceptual Design of Dual Baseline-Frequency Fast Directional Switch using Square Corrugated Waveguide Splitter/Combiner

Hiroshi Idei, T. Kobayashi, S. Moriyama, A. Isayama, M. Sakaguchi, W. Kasparek

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    A FAst DIrectional Switch(FADIS) performance based on steep slope in a diplexer function was considered for dual-frequency (dual-f) applications to switch the transmission line with small frequency control. A diplexer of FADIS using a Square Corrugated Waveguide (SCW) splitter was designed as one of the most attractive candidates for the dual-f operation. The splitter performance was a key issue for the dual-f operation, and extended operation regions in splitter operations have been considered and surveyed using mode contents analysis based on matching coefficient evaluation. Some operational branches with high matching coefficients (>0.9) were found, and a new operating parameters were proposed for the dual-f operation in the JT-60SA Electron Cyclotron Hearing and Current Drive (ECHCD) system. Radiation pattern distributions from the SCW splitter were defined very well with no serious side lobes in the dual-f operation. In double loop ring resonator system, the diplexer frequency response was sufficiently steep to switch the outputs of the JT-60SA dual-f gyrotron.

    Original languageEnglish
    Pages (from-to)662-674
    Number of pages13
    JournalJournal of Infrared, Millimeter, and Terahertz Waves
    Volume36
    Issue number7
    DOIs
    Publication statusPublished - Jul 5 2015

    Fingerprint

    corrugated waveguides
    Conceptual design
    Waveguides
    switches
    Switches
    Cyclotrons
    Audition
    Directional patterns (antenna)
    Frequency response
    frequency control
    Resonators
    Electric lines
    distribution (property)
    coefficients
    hearing
    lobes
    frequency response
    transmission lines
    cyclotrons
    Electrons

    All Science Journal Classification (ASJC) codes

    • Radiation
    • Instrumentation
    • Condensed Matter Physics
    • Electrical and Electronic Engineering

    Cite this

    Conceptual Design of Dual Baseline-Frequency Fast Directional Switch using Square Corrugated Waveguide Splitter/Combiner. / Idei, Hiroshi; Kobayashi, T.; Moriyama, S.; Isayama, A.; Sakaguchi, M.; Kasparek, W.

    In: Journal of Infrared, Millimeter, and Terahertz Waves, Vol. 36, No. 7, 05.07.2015, p. 662-674.

    Research output: Contribution to journalArticle

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    AU - Isayama, A.

    AU - Sakaguchi, M.

    AU - Kasparek, W.

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