Abstract
This paper presents the impact of Power optimized Waveforms (POWs) such as RF Pulse and Multisine Signals (MS) on the efficiency of several rectifiers with different topologies such as voltage doubler, shunt and series, with and without input matching networks. The aim consists to demonstrate that instead of optimizing accurately the rectifiers, one can compensate the performance by optimizing the waveform. In this study, a comparison is made between optimized and non-optimized rectifiers, supplied by CW (Continuous Waves) and POW, respectively. The optimized circuits contain input matching networks. Measurement results show that the efficiency of multisine signals increases with respect to the number of sub-carriers. Also, the performances of non-optimized rectifiers supplied by multisine signals becomes comparable and close to those of optimized rectifiers supplied with CW. RF pulse signal gives the highest output dc voltage over the frequency band of interest for duty cycle values less than 15%.
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