Leakage Loss Analysis of Conductor Backed Coplanar Waveguide with Air-Gap-Spacing Dielectric Sheets

Masashi HOTTA  Tomoyuki INOUE  Masahiro KOBAYASHI  Mitsuo HANO  

IEICE TRANSACTIONS on Electronics   Vol.E85-C   No.7   pp.1519-1522
Publication Date: 2002/07/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Microwaves, Millimeter-Waves
conductor backed CPW,  leakage loss,  FDTD,  dielectric sheets,  air-gap-spacing (AGS),  

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Leakage loss of Conductor Backed Coplanar Waveguide (CBCPW) with air-gap-spacing (AGS) dielectric sheets has been analyzed by using the hybrid 2D-FDTD Method and curve-fitting procedure. From numerical results, the proposed CBCPW with AGS dielectric sheets shows even lower leakage loss characteristics than those of conventional and double-layered one over a wide range of operating frequency. Furthermore, the possibility of the optimum air-gap width for leakage loss has been confirmed.