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

H. 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

    All Science Journal Classification (ASJC) codes

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

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