Gas spreading detection by means of a terahertz leaky-wave antenna-Reference-Cited by-同舟云学术

Gas spreading detection by means of a terahertz leaky-wave antenna

Published:2022-09-26 Issue:13 Volume:121 Page:134101
ISSN:0003-6951
Container-title:Applied Physics Letters
language:en
Short-container-title:Appl. Phys. Lett.

Author:

Zhang D.¹^ORCID,Comite D.²^ORCID,Deng X.¹^ORCID,Zheng X.¹^ORCID,Baccarelli P.³^ORCID,Burghignoli P.²^ORCID

Affiliation:

1. The Department of Automation, Beijing National Research Center for Information Science and Technology, Tsinghua University, Beijing 100084, China

2. The Department of Information Engineering, Electronics and Telecommunications, Sapienza University of Rome, 00184 Rome, Italy

3. The Department of Industrial, Electronic, and Mechanical Engineering, University of Roma Tre, 00146 Rome, Italy

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.

Funder

National Natural Science Foundation of China

Publisher

AIP Publishing

Subject

Physics and Astronomy (miscellaneous)

Link

https://aip.scitation.org/doi/pdf/10.1063/5.0104595

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