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It is useful to determine the stopband of a bed of nails that can be used for packaging applications. The traditional methodology to identify the cell characteristics is to use the eigenmode solver, which is a numerical method that cannot be validated using a measurement setup. Here, we introduce a mathematical procedure to extract the dispersion relation out of the scattering parameters. The scattering...
The equivalent TEM mode theory, introduced by Fahmy and Eshrah in 2002, modeled the antenna as the inner conductor of a fictitious lossy transmission line with complex propagation constant and the proposed values of these constants are listed in tables without closed form expressions. The model parameters extraction procedure was rather complicated with some discrepancy in the input impedance values...
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