Nimbic’s accelerated system‐ in‐package extractor nApex rapidly creates accurate and large‐scale full‐net RLGC models. This note discusses the physical meaning of the mutual resistance terms generated. It
is shown that these terms have explicit correspondence to overlapping ground returns at low frequency. The concept of high‐frequency induced‐current‐based mutual resistance is also shown to be erroneous. Finally, the distinction between transmission‐line like nets, with a common ground, and low‐frequency conductor nets, is shown to be the reason for the appearance of the mutual resistance terms.
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Editorial
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