Time-Domain THz Near-Field Imaging Incorporating Hadamard Multiplexing Method
AffiliationDepartment of Electrical and Computer Engineering, University of Arizona
Department of Physics, University of Arizona
Signal to noise ratio
Principal component analysis
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CitationM. Tuo, M. Liang, J. Zhang and H. Xin, "Time-domain THz near-field imaging incorporating Hadamard multiplexing method," 2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz), Copenhagen, 2016, pp. 1-1.
RightsCopyright © 2016, IEEE.
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AbstractPhotoconductive antenna (PCA) array based THz near-field imager incorporating Hadamard multiplexing method is developed in this work. By using a 2 × 2 dipole antenna array as the THz transmitter, the system signal-to-noise ratio (SNR) is demonstrated to be improved by a factor of 2 as the theory predicts. Additionally, a 2-D scanning of a metallic structure on a THz-transparent substrate (with a total scanning area of 1 × 1 mm2) is experimentally implemented. Correlation coefficient estimation is made afterwards to quantify the reconstructed image quality.
VersionFinal accepted manuscript