Materials and Fixtures for Measurements at 224Gbps

At 224Gbps data rates, test fixtures and PCB materials must improve.  Using a target of 67GHz for high-quality s-parameter measurements, various PCB materials and test fixtures are evaluated.  The evaluations include low-loss dielectrics, smooth PCB copper, and 1.85mm co-ax fixtures.  These are combined to make PCB trace measurements, plus co-ax and twinax cable measurements.  De-embedding […]

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