(A key feature of wireless communication systems is the use of high frequency (radio) signals to communicate messages. The wireless method makes the most of the use of high-frequency circuits. Although various wireless communication systems differ greatly in the method of message transmission, office method, and equipment system configuration, the underlying circuits in the equipment to generate, receive and view high-frequency signals are mostly the same.)
发表于 2022-8-9 09:51:55
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