Non-exchanging structure calibration kit for double-side direct contact measurement

In this paper, there is a novel double-side calibration thru kits which can be used in 4 ports By comparing different double-sided calibration, novel double-side calibration has better advantages. Therefore, novel double-side calibration is used in this paper. In novel double-side SOLT calibration, thru kit is the most important part. There are two types design about novel double-side thru kit, one is called the paralleled, the other is the diagonal. Finally, non-exchanged layer structure to achieve what we design.