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. Particular attention is devoted to the antenna design, in order to manage cross-polarized signals in the system activity. 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 experimental demonstrated for two operating frequencies, 2.45 and 5.8 GHz.

A Microwave Sensor System Based on Reverse Modelling of the Array Factor

COSTANZO, ALESSANDRA;MASOTTI, DIEGO;ARBIZZANI, NICOLA;RIZZOLI, VITTORIO;MASTRI, FRANCO
2012

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. Particular attention is devoted to the antenna design, in order to manage cross-polarized signals in the system activity. 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 experimental demonstrated for two operating frequencies, 2.45 and 5.8 GHz.
Proceedings of the 6th European Conference on Antennas and Propagation 2012
3446
3449
A. Costanzo; D. Masotti; N. Arbizzani; V. Rizzoli; F. Mastri
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/118871
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