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A pseudo-traveling-wave resonator with magnetically tunable phase gradient of field distribution is investigated, and a new type of beam-steering antenna based on the resonator is experimentally demonstrated for the first time. It is a short-ended transmission-line resonator and is composed of a nonreciprocal phase-shift composite right/left-handed transmission line using a polycrystalline yttrium–iron–garnet...
The smoke emitted from the combustion of nylon fabric is studied. Transmission loss of infrared light in the smoke was more than 50 dB larger than that of THz waves. THz absorption spectra showed the existence of hydrogen cyanide in the smoke. These results prove the advantage of THz waves over infrared light for remote toxic gas sensing at disaster sites.
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