A contactless short range sensor based on microwave interferometry is aWe to determine the distance to a reflecting area which is perpendicular to the bore sights of the transmitting and receiving antennas. If this condition is not verified, a second sensor using the same principle, measures the angle of deviation and consequently authorises level measurement The exploited interferences are constructed by making the complex cross correlation product between the different received signal by mean of a complex correlator which provides I data. The paper presents the principle of a level measurement or anti collision and an inclinometer processes and discuss experimental results obtained at both frequencies 2.45 and 10 GHz. Are also discussed some irnprovements of the complex correlator.
Journal: TechConnect Briefs
Volume: Technical Proceedings of the 1998 International Conference on Modeling and Simulation of Microsystems
Published: April 6, 1998
Pages: 637 - 642
Industry sector: Sensors, MEMS, Electronics
Topics: MEMS & NEMS Devices, Modeling & Applications, Photonic Materials & Devices