Efficient Dithering Technique with Periodic Waveforms for RF Test and Characterization
Catherine A. Remley, Saeed Farsi, Bart Nauwelaers, Dominique Schreurs
A dithering technique based on ensemble averaging of waveforms is proposed. In the proposed method, instead of performing several measurements with different dithering additive noise, a single measurement of multiple periods of a sine-dithered periodic waveform is used. The measured waveform is then segmented and the segments are averaged to obtain a noise-reduced post-processed waveform. This technique provides improved efficiency in test and characterization applications where accuracy higher than that of the built-in data converters of the measurement equipment is required. Moreover, it is shown that by using large dithering signals in the proposed technique, one can reduce the non-ideal effects in real applications. The measured reduction in the adjacent channel power of a modulated signal emanating from an arbitrary waveform generator supports the effectiveness of the approach.
IEEE Transactions on Microwave Theory and Techniques
, Farsi, S.
, Nauwelaers, B.
and Schreurs, D.
Efficient Dithering Technique with Periodic Waveforms for RF Test and Characterization, IEEE Transactions on Microwave Theory and Techniques, [online], https://doi.org/10.1109/TMTT.2013.2283847
(Accessed December 2, 2023)