A new TRL/TRM PCB-based Calibration Method for On-Board Devices Under Test (DUTs)

In this paper, a new TRL/TRM calibration method is described and compared to an electronic calibration module (ECal) method which is widely used in industry. This method needs a specifically made de-embedding board but does not require an expensive ECal or any special precision board-level calibration devices. The method is applied to an automotive sensor interface IC showing the new calibration method enables us to conduct accurate on-board S-parameter measurements up to 4 GHz whereas the other method becomes inaccurate above 500 MHz.