Measurement Bandwidth Extension Using Multisine Signals: Propagation of Error

Date Added: Feb 2010
Format: PDF

One Technique for extending the useful measurement bandwidth of vector receivers is based on "Stitching" together a series of overlapping frequency bands using the overlapping tones for phase alignment. The authors describe a post-processing technique that extends the effective measurement bandwidth of narrowband vector receivers by phase aligning overlapping measurements. They study the repeatability of the method and the propagation of errors as increasing numbers of bands are stitched together. The method can be used to find phase errors both in the excitation band of frequencies, as well as in distortion products, for periodic multi-sine signals.