Modeling of PGA lines considering electromagnetic coupling based on high frequency measurements

Electromagnetic coupling of pin-grid array (PGA) lines may cause problems in sensitive circuits. Models that are based upon measurements in a wide frequency range and which consider coupling effects are needed for the estimation of the electrical performance of a package. To enable high-frequency measurements of a four port device under test (DUT) with a two port network analyzer using microwave probes, a complex measurement setup including special contact structures is designed. The complete model of the DUT includes contact structures and lines on both the board, as well as on the chiplevel, the wirebond and pin grid array (PGA)-lines. The contact structures, lines and the wirebonds are modeled separately