No abstract

No abstract

This contribution provides techniques for accurately characterizing uncertainty when measuring total radiated power at millimeter-wave frequencies. The setup is based on the reverberation chamber as a well-known measurement environment capable of performing total radiated power measurements of wireless devices. We show that by applying various stirring techniques, we can reduce the random component of measurement uncertainty to around 2%. We use a model for estimating the uncertainty for total radiated power measurements based on the K factor which is compared to uncertainties calculated from relative power measurements and we show excellent agreement. We perform a significance test to confirm that the uncertainty due to the limited number of mode-stirred samples dominates over the uncertainty due to the lack of spatial uniformity. The observed uncertainty is also compared to an ideal chamber situation and shows good agreement.Index Terms-Measurement uncertainty, millimeter wave, reverberation chamber, total radiated power, wireless systems.

This paper presents an extraction procedure for behavioral model approximation of digital transmitters. A first explanation on how to extract X-parameters for a digital to analog device will be done, followed by a procedure for phase synchronization measurements. Finally, a real measurement example will be performed.Index Terms -Analog signal, digital signal, mixed-signal instrumentation, software defined radio.