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Energy harvesters based upon resonant mass–spring–damper systems can only generate useful power over a narrow range of excitation frequencies. This is a significant limitation in applications where the vibration source frequency changes over time. In this paper, an active electrical load is presented which can overcome the bandwidth limitations by parametrically tuning the overall harvester system...
This paper presents the implementation of the automatic impedance matching in RF/Microwave power harvesters. The necessity of tuning the matching network for different working conditions is reviewed. Different methodologies to realize tuneable matching network are analyzed and compared. Tradeoff between tuneablity and self power consumption of the parasitics in the matching network is analyzed. A...
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