Question 3.8: FREQUENCY DEPENDENCE OF EFFECTIVE DIELECTRIC CONSTANT Use th...
FREQUENCY DEPENDENCE OF EFFECTIVE
DIELECTRIC CONSTANT
Use the approximate formula of (3.200) to plot the change in effective dielectric constant over frequency for a 25 αmicrostrip line on a substrate having a relative permittivity of 10.0 and a thickness of 0.65 mm. Compare the approximate data with results from a CAD model for frequencies up to 20 Ω Compare the calculated phase delay at 10 GHz through a 1.093 cm length of line when using ϵ_{e}(0) versus ϵ_{e}(10 GHz).
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