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This work claims that VO2, of interest currently for its metal-insulator phase transition properties, is also a ferroelectric material. Using a VO2 film sandwiched between two silicon dioxide layers, memory transistor structures with substantial and useful properties have been fabricated. Threshold voltage shifts are opposite of charge trapping phenomena and consistent with ferroelectric polarization...
This paper deals with a coaxial-to-waveguide adapter generating circularly polarized wave to be connected with horn antennas. By combining the polarization twisting structure and the phase delay structure, the circular polarization is successfully generated in the waveguide. The designed and implemented adapter shows that the present structure can significantly reduce the size of the adapter for circularly...
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