
A method to traceably calibrate source or receiver WCDMA EVM contributions a using a real-time digital oscilloscope as the reference receiver is described. The weighted mean receiver EVM at 900 MHz is 0.35 ± 0.03% at 95% confidence. Measurement results also reported at 1780 and 2510 MHz. IEEE Trans. IM. Vol. 62 (6) pp. 1413 – 1416, June 2013