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Analysis of coupled coplanar waveguides with V-shaped conductor backing using conformal-mapping method

Analysis of coupled coplanar waveguides with V-shaped conductor backing using conformal-mapping method

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The V-shaped microshield coupled parallel coplanar waveguides, a new type of the coupled parallel coplanar waveguide (CP CPW), is proposed. Closed-form expressions are presented for calculating the quasistatic parameters of this coupled structure by using conformal-mapping techniques. The effect of the V-shaped conductor backing on the coupling between CPWs is also discussed. Comparisons are made between the present numerical results and the spectral-domain method results available in the literature for a conventional CP CPW. In addition, the coupling coefficient of the present coupled CPW is shown to be significantly lower than that of a coupled parallel CPW.

Inspec keywords: coplanar waveguides; electric impedance; waveguide theory; numerical analysis

Other keywords: conformal-mapping method; closed-form expressions; quasistatic parameters; spectral-domain method results; coupled parallel coplanar waveguide; CPW; characteristic impedance; coupled coplanar waveguides; V-shaped conductor backing; V-shaped microshield; numerical results; coupling coefficient

Subjects: Waveguide and cavity theory; Waveguides and microwave transmission lines; Other numerical methods

References

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