F.12 Equal sector with peak average

37.145-23GPPActive Antenna System (AAS) Base Station (BS) conformance testingPart 2: radiated conformance testingRelease 17TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

Equal sector with peak average can be performed on frequencies with unwanted peak emission, which are considered by the peak method for further measurements.

The spherical angle is divided into K equal sectors. If the largest dimension of EUT is less than 60 cm, then each sector is a half quadrant of 45°.

For each peak emission frequency, measure peak EIRP of beams belonging to different sectors of the sphere as follows:

1. Move EUT and test antenna to the same position where the emission peak is recorded during the pre-scan.

2. Move EUT around the position and test antenna orientation to find the final peak EIRP.

3. Repeat Steps 1 to 2 until all sectors are covered.

4. Calculate TRP_Estimate as:

where is the peak EIRP in the kth sector.

NOTE: Peak EIRP is the linear sum of two orthogonal polarised components.