Large-scale crosstalk at vias and poor via electrical performance are major drawbacks in state-of-the-art high-frequency multilayer first- or second-level integrated-circuit/monolithic-microwave integrated-circuit (IC/MMIC) packages. The coax via design modeled in this paper breaks new ground in achieving more than 30-dB ultrawide-band crosstalk reduction and providing an enhanced impedance match.
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E. Pillai (1997) studied this question.
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