Table 2.

G uncertainty budget using two antenna method.

Source	Reference	Value (dB or %)	Distribution	Divisor	Standard uncertainty (dB)
Receiver linearity (reference measurement)	Data sheet	0.01	Rectangular	1.732	0.005
Receiver linearity (DUT measurement)	Data sheet	0.12	Rectangular	1.732	0.005
Ripple (reference measurement)	Measurement	0.12	Normal (k=1)	1	0.12
Ripple (DUT measurement)	Measurement	0.12	Normal ((k=1))	1	0.12
Polarization error (reference measurement)	Data sheet	0.05%	Rectangular	1.732	0.001
Polarization error (DUT measurement)	Data sheet	0.05%	Rectangular	1.732	0.001
Phase error (reference measurement)	Data sheet	0.1	Rectangular	1.732	0.01
Phase error (DUT measurement)	Data sheet	0.1	Rectangular	1.732	0.001
Mismatch in calibration (reference measurement)	Data sheet	0.001	Normal (k=1)	1	0.001
Mismatch in calibration (DUT measurement)	Data sheet	0.001	Normal (k=1)	1	0.001
Distance measurement (reference measurement)	Data sheet	0.024	Normal	2	0.012
Distance measurement (DUT measurement)	Data sheet	0.024	Normal	2	0.012
Combined uncertainty					0.289
Expanded uncertainty (95% confidence level)					0.578