A linear array of microwave sensors for moisture content mapping in thin or thick material sheets is introduced. The array building block is represented by a straight microstrip line electromagnetically coupled to a resonant slot structure properly loaded by two PIN diodes. Each array element constitutes a single slot sensor interacting with the material under test by means of the fields radiated through the slot. When the diodes are in the ON state, each sensor and, thus, the whole array, acts like a low loss transmission line. Otherwise, when the diodes are in the OFF state, the slots are allowed to resonate. Switching the array elements one at a time, the array electronically scans the specimen under test.
Microwave system for moisture mapping by a linear array of slot sensors / G., Biffi Gentili; Avitabile, Gianfranco; C., Riminesi; N., Sottani; V., Tesi. - (2002), pp. 32-34. (Intervento presentato al convegno 2nd ISA/IEEE Sensors for Industry Conference, SIcon02 tenutosi a Houston, TX nel November 19-21, 2002) [10.1109/SFICON.2002.1159801].
Microwave system for moisture mapping by a linear array of slot sensors
AVITABILE, Gianfranco;
2002-01-01
Abstract
A linear array of microwave sensors for moisture content mapping in thin or thick material sheets is introduced. The array building block is represented by a straight microstrip line electromagnetically coupled to a resonant slot structure properly loaded by two PIN diodes. Each array element constitutes a single slot sensor interacting with the material under test by means of the fields radiated through the slot. When the diodes are in the ON state, each sensor and, thus, the whole array, acts like a low loss transmission line. Otherwise, when the diodes are in the OFF state, the slots are allowed to resonate. Switching the array elements one at a time, the array electronically scans the specimen under test.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
