Question: What is the primary cause of Out of Band (OOB) emissions in a transmitter, as per 3GPP specifications, excluding spurious emissions?
Option 1: Imperfections in the receiver's filtering mechanism
Option 2: The modulation process and non-linearity in the transmitter
Option 3: Insufficient power amplification leading to signal distortion
Option 4: Inadequate antenna design causing frequency overlap
Explanation: Out of Band emissions are directly related to the internal workings of the transmitter, specifically how the modulation process (which alters the carrier wave to encode information) and non-linearity (deviations from an ideal linear response) within the transmitter itself generate unwanted emissions outside the intended channel. This understanding is crucial in telecom networks for managing interference and ensuring spectral efficiency.