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mmWave packaging - KKPCB

Alumina PCB for mmWave Packaging: Cavity, Ground, and Connector Datum Control

In a compact mmWave package, the Alumina PCB is often both circuit carrier and mechanical reference. A cavity, lid, bond window, connector, or waveguide transition can define the electromagnetic boundary more strongly than a long trace. The project risk is a datum mismatch: the electrical drawing references the board edge while the housing references the...