Design of Pulse Width Modulator for PDM Medium Wave Transmitter Based on Single Chip Microcomputer
This article designs a Pulse Width Modulation(PDM)medium wave transmitter pulse width modulator based on a microcontroller,which realizes the functions of audio signal sampling,gain control,pulse signal generation,and abnormal fault protection through software.The experimental test results show that this design is comparable to existing analog pulse width modulators in terms of performance indicators,and has successfully solved some of the problems existing in analog pulse width modulators.It can provide reference for the digital and intelligent upgrade of broadcast transmitter equipment.
medium wave transmitterPulse Duration Modulation(PDM)single chip microcomputer
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