Patent ID: 8166796
Filing Date: 2012-05-01
Classification: G01Q

Abstract:
1. A self-calibrating apparatus comprising: a primary device fabricated on an integrated circuit chip, the primary device having at least one unknown property due to a fabrication process of the integrated circuit chip; a test structure fabricated on the same integrated circuit chip as the primary device, the test structure having the same material properties as the primary device so that the test structure also has the same at least one unknown property as the primary device; an electrical measurand sensor configured to measure an electrical measurand of the test structure; and a controller coupled to the primary device and electrical measurand sensor, the controller including means for calculating a value indicative of the at least one unknown property of the test structure based on the measured electrical measurand, the controller using the calculated value indicative of the at least one unknown property to calibrate the primary device.