A new design approach for low-cost multiprobe reflectometers is presented. While traditional circuits adopt equally spaced probes, the solution presented here provides a method to greatly enhance the bandwidth of the measuring system by a proper choice of each probe position. As an example, a five-probe (1-16) GHz reflectometer was designed and the measurement results compared to those obtained with commercial vector network analyzers.
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Madonna et al. (1999) studied this question.
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