A transmitter is no doubt a critical part of any communications system. Simply put, the purpose of a transmitter is to transmit signals that contain some form of information. The explosion of mobile communications means that many people actually have a transmitter right in their pocket. In addition, many people today still listen to AM and FM radio stations, which obviously require transmitters to broadcast programs. Moreover, aircraft, radar systems, and many other applications depend on transmitters to enable communication...
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