The paper describes a possible circuit implementation of a low-cost, non-invasive sensor system for wireless structural monitoring. It consists of a two-tags array and one reader: the former is the sensor placed on the structure to be monitored, the latter is placed in a predetermined position with respect to the array phase center. The simple operating principle of the system exploits the far-field array-factor definition, in particular the positions, on the reader side, of the nulls of the received radiation surface. A proof of concept of the sensor is experimentally demonstrated for two operating frequencies, 2.45 and 5.8 GHz.
A MICROWAVE DISPLACEMENT SENSOR SYSTEM EXPLOITING ELECTROMAGNETIC INTERFEROMETRY
COSTANZO, ALESSANDRA;FANTUZZI, MARCO;MASOTTI, DIEGO;RIZZOLI, VITTORIO
2014
Abstract
The paper describes a possible circuit implementation of a low-cost, non-invasive sensor system for wireless structural monitoring. It consists of a two-tags array and one reader: the former is the sensor placed on the structure to be monitored, the latter is placed in a predetermined position with respect to the array phase center. The simple operating principle of the system exploits the far-field array-factor definition, in particular the positions, on the reader side, of the nulls of the received radiation surface. A proof of concept of the sensor is experimentally demonstrated for two operating frequencies, 2.45 and 5.8 GHz.File in questo prodotto:
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