With the development of the modern communication technique, the frequency of communication systems are becoming higher and higher. In the MF to HF, and to RF band, even some frequencies in microwave band are used in some systems.
随着现代通信技术的发展,通信系统的频率不断提高,由原来的中频到高频,由高频到射频,乃至到微波频段都有涉及。
参考来源 - 矩量法在射频电路设计中的应用·2,447,543篇论文数据,部分数据来源于NoteExpress
ABBREVIATION for medium frequency 中频率 [radio]
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