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数字微波通信与光纤通信、卫星通信被誉为现代通信传输的三大支柱。尽管其发展历史仅仅20年,但由于其容量大,上下话路方便,质量稳定可靠,投资省,建设周期短的诸多优点,受到世界各国的普遍重视,并优先开发推广。到80年代末,长途通信传输业务由数字微波承担的,日本占30％,美国占25％,欧洲占37％。这些发达国家已完成了13GHZ频段及更高频段四次群基带以上的各种系列产品的开发和应
Digital microwave communications and optical fiber communications, satellite communications known as the three pillars of modern communications transmission. Although its development history is only 20 years, its advantages of large capacity, convenient access, stable quality, low investment, and short construction period have attracted the attention of all countries in the world and have given priority to development and promotion. By the late 1980s, long-distance communications transmission business was undertaken by digital microwaves, with Japan accounting for 30%, the United States accounting for 25% and Europe accounting for 37%. These developed countries have completed the development and application of various series of products above the base band of 13GHZ band and higher band