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The fast wave concept iterative process (FWCIP) and the boundary element method (BEM) are combined to evaluate the characteristic impedance of a microstrip filter, which is composed of (8 × 8) metallic via holes array. Simulations, measurements, and previous publications are in good agreement.

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The problem of electromagnetic shielding between elements of microelectronic circuits has been studied by using a new technique (the via holes technique). Metallic squares and truncated square cross sections approximate each metallic circle cross section. A comparison between the adjacent and a staggered arrangement of via holes has been illustrated theoretically and experimentally. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 29: 322–324, 2001.