ABSTRACT
The terahertz (THz) radiation (0.1 ∼ 30 THz) is categorized between millimeter-wave (mm-wave) and infrared light wave [16]. Recently, a great deal of attention has been paid to the THz spectroscopy and imaging system due to the moderate wavelength of the THz wave that can leverage the advantages of both millimeter-waves (mm-waves) and light waves [17, 16, 18]. Like mm-wave, THz wave has deep penetration to dielectric substances such as ceramics, plastics, powders and food; like light wave, THz images with high spatial resolution can be obtained by a 2-dimensional (2D) detection with THz sensor array [19]. On the other hand, high-data-rate THz wireless communications have also come into view due to the abundance of undeveloped bandwidth resources [20].
