Question: When conducting Over The Air (OTA) antenna performance conformance testing for User Equipment (UE), how are Total Radiated Power (TRP) and Total Radiated Sensitivity (TRS) measurements typically distributed across a frequency band?
Option 1: In a single central channel, representing the average frequency band performance.
Option 2: Across two channels: one at the lower end and one at the upper end of the frequency band.
Option 3: In three channels: low, mid, and high channels, to capture frequency-dependent variations.
Option 4: Dynamically, with the number of measurement channels varying based on the bandwidth of the frequency band.
Explanation: Measuring TRP and TRS in three channels (low, mid, and high) within a frequency band is crucial due to the frequency-dependent nature of handset antenna radiation patterns. This approach ensures that variations in both the size and shape of the radiation pattern across the band are adequately captured, providing a comprehensive understanding of the UE's OTA performance.