Approximations to hybrid mode slot line behaviour

Approximations to hybrid mode slot line behaviour

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New closed form formulas are presented for the dispersion characteristic (λ'/ λ) and characteristic impedance (Z0) of single slot line. λ'/λ and Z0 are given as functions of the slot width w over substrate thickness H ratio and the ratio H/λ where λ is the free-space wavelength. For the ranges of variable considered λ'/λ values agree with S. B. Cohn's and Mariani et al. results to within 5% and Z0 agrees to within 14.5% or better.


    1. 1)
      • S.B. Cohn . Slot line on a dielectric substrate. IEEE Trans. , 768 - 778
    2. 2)
      • E.A. Mariani . Slot line characteristics. IEEE Trans. , 1091 - 1096
    3. 3)
      • T. Itoh , R. Mittra . Dispersion characteristics of slot lines. Electron. Lett. , 364 - 365
    4. 4)
      • J.B. Knorr , K.D. Kuchler . Analysis of coupled slots and coplanar strips on dielectric substrate. IEEE Trans. , 541 - 548

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