What is the name of the process that changes the phase angle of an RF signal to convey information?
Phase convolution
Phase modulation✓الإجابة الصحيحة
Phase transformation
Phase inversion
الشرح
Modulation schemes are named for the carrier property being varied, so changing phase angle to carry information is called PM. Phase inversion is only a fixed 180-degree flip and conveys no information by itself.