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1.阐明电波传播特性用于移动通信的频率随着时代的进步而逐步向更高频段发展,这一点在“一、移动通信中频率利用的现状和未来动向”一节的图3中已经指出。在更高频段,收发信机的
1. Elucidating the Radio Wave Propagation Characteristics The frequency used for mobile communications has gradually increased to higher frequencies as the times progressed, as shown in Figure 3 of the section entitled “Current and future trends in frequency utilization in mobile communications” . At higher frequencies, transceivers