Propagation characteristics on millimeter and quasi-millimeter waves by using three geostationary satellites of Japan

The paper introduces several propagation results in the frequency bands of millimeter and quasi-millimeter waves in regards to the results of the Japanese engineering test satellite II, (ETS-II), the medium-capacity communication satellite for experimental purposes (BSE), and experimental communications satellite (ECS). Among the propagation experiments it was found that the percentages of time in which measured attenuation exceeds 5, 10, and 15 dB are 0.7, 0.3, and 0.15% respectively at 34.5 GHz, (ETS-II), 0.08, 0.016, and 0.008% respectively at 19.45 GHz (CS), 0.025, 0.0025, and 0.0009% respectively at 11.7125 GHz (BSE), and 0.02, 0.0023, and 0.001% respectively at 11.5 GHz (ETS-II). Finally, the paper presents the outline of the propagation experiments by using ETS-II, CS, BSE, and ECS, and propagational characteristics of radio waves mainly above 10 GHz at the main station, Kashima Branch.