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Time-Domain THz Near-Field Imaging Incorporating Hadamard Multiplexing Method

Photoconductive 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.

Identiferoai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/622785
Date25 September 2016
CreatorsTuo, Mingguang, Liang, Min, Zhang, Jitao, Xin, Hao
ContributorsDepartment of Electrical and Computer Engineering, University of Arizona, Department of Physics, University of Arizona
PublisherIEEE
Source SetsUniversity of Arizona
LanguageEnglish
Detected LanguageEnglish
TypeProceedings
RightsCopyright © 2016, IEEE

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