A spectroscopy system for gas detection based on a terahertz (THz) parallel-plate waveguide leaky-wave antenna is presented. Compared to conventional THz spectroscopy systems, we exploit the intrinsic dispersive behavior of a leaky-wave antenna to detect multiple spectral absorption peaks of the considered target. The proposed THz antenna is tested and validated by means of full-wave simulations and experimental measurements on a manufactured prototype. A gas detection experiment considering acetonitrile (i.e., CH3CN) has been carried out to characterize the performance of the spectroscopy system. The directional patterns of the leaky-wave antenna are demonstrated to map the absorption characteristic peaks of the CH3CN, thus enabling an extension of the detection range. Thanks to the intrinsic frequency-scanning behavior of the antenna, each absorption peak can be associated with an angle, enabling, therefore, spatial discrimination to monitor gas spreading.
Gas spreading detection by means of a terahertz leaky-wave antenna / Zhang, D.; Comite, D.; Deng, X.; Zheng, X.; Baccarelli, P.; Burghignoli, P.. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 121:13(2022), pp. 1-5. [10.1063/5.0104595]
Gas spreading detection by means of a terahertz leaky-wave antenna
Zhang D.
;Comite D.;Burghignoli P.
2022
Abstract
A spectroscopy system for gas detection based on a terahertz (THz) parallel-plate waveguide leaky-wave antenna is presented. Compared to conventional THz spectroscopy systems, we exploit the intrinsic dispersive behavior of a leaky-wave antenna to detect multiple spectral absorption peaks of the considered target. The proposed THz antenna is tested and validated by means of full-wave simulations and experimental measurements on a manufactured prototype. A gas detection experiment considering acetonitrile (i.e., CH3CN) has been carried out to characterize the performance of the spectroscopy system. The directional patterns of the leaky-wave antenna are demonstrated to map the absorption characteristic peaks of the CH3CN, thus enabling an extension of the detection range. Thanks to the intrinsic frequency-scanning behavior of the antenna, each absorption peak can be associated with an angle, enabling, therefore, spatial discrimination to monitor gas spreading.| File | Dimensione | Formato | |
|---|---|---|---|
|
Zhang_Gas-spreading_2022.pdf
solo gestori archivio
Tipologia:
Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza:
Tutti i diritti riservati (All rights reserved)
Dimensione
1.53 MB
Formato
Adobe PDF
|
1.53 MB | Adobe PDF | Contatta l'autore |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
