2018 年 16 巻 2 号 p. 131-136
In 2018, practical broadcasting of 4K/8K ultra-high-definition television will start with 12-GHz band satellite broadcasting using right- and left-hand circular polarization in Japan. For 4K/8K satellite broadcasting reception, the Association of Radio Industries and Businesses standardized specifications of distribution equipment for home use. Therefore, we fabricated a dual-polarization receiving antenna and optical distribution equipment in accordance with the specifications. We measured the aperture efficiency and cross-polarization discrimination of the fabricated antenna, and the respective results indicated that they were more than 74% and 26 dB. We also confirmed that the fabricated optical distribution equipment was able to deliver 50 modulated signals with C/N degradation of 0.1 dB.
