The .000001% of use cases for a simple passive VGA to HDMI is for when the video source is designed especially to output both VGA and HDMI. In these cases the cable will accompany the video source when you buy it. This is so rare, I almost regret writing this much about it. Analog vs Digital.
Definition - What does Pulse Width Modulation (PWM) mean? Pulse-width modulation (PWM) is a modulation process or technique used in most communication systems for encoding the amplitude of a signal right into a pulse width or duration of another signal, usually a carrier signal, for transmission.
The contours of each RF-pulse are specified using 100-200 data points, and are therefore of low-frequency (measured in kHz). The pulse-shape data is used to modulate the carrier wave so that the resultant output is a mixture of frequencies centered around the carrier. RF-pulse.