M.4.5 TRP Grids for Spurious Emissions

38.521-23GPPNRPart 2: Range 2 StandaloneRadio transmission and receptionRelease 17TSUser Equipment (UE) conformance specification

The worst antenna array assumptions for the MU simulations are outlined in Tables M.4.5-1 and M.4.5-2.

Table M.4.5-1: Single Antenna Element Radiation Pattern for spurious emission measurements

Antenna element horizontal radiation pattern	, Am =30 dB
Horizontal half-power beam width of single element	260o
Antenna element vertical radiation pattern	, SLAv =30 dB
Vertical half-power beam width of single array element	130o
Array element radiation pattern
Element gain without antenna losses	GE,max = 1.5 dBi

Table M.4.5-2: Composite Antenna Array Radiation Pattern for spurious emission measurements

Composite array radiation pattern in dB	the super position vector is given by: the weighting is given by:
Antenna array configuration (Row×Column)	8 x 2
Horizontal radiating element spacing, dh/λ	1
Vertical radiating element spacing, dv/λ	1

The TRP measurement grid selection for spurious emissions is up to test system implementation but shall meet the criteria shown in Table M.4.5-3.

Table M.4.5-3: TRP measurement grid requirement for spurious emission measurements

Level of Grid	Grid Type	Standard Deviation of MU Element ‘Influence of TRP Measurement’	Systematic error due to TRP calculation/quadrature	Number of unique grid points
Coarse	Constant Density	N/A	N/A	35
	Constant-Step Size	N/A	N/A	62 (==30o)
Fine	Constant Density	0.32dB	0dB	135
	Constant-Step Size	0.31dB	0dB	==15o)

For spurious emissions, TRP measurements with measurement antennas displaced up to 10^o from the focal point (based on electrical switching) in an IFF (based on CATR) test system, alternate TRP approaches for constant-step size grids are allowed for the coarse and fine grids:

interpolation to the non-offset system coordinate system that allows the use of Clenshaw-Curtis or classical sin() quadratures

use of the advanced Jacobian matrix quadrature approach that uses triangulations of the sphere

Annex N (normative):
UE coordinate system