L-matching networks have been proposed for boosting the power efficiency of radiofrequency (RF) energy harvesters. This paper shows that power efficiency is maximized by fine-tuning the components of the L-matching network ...

Wireless sensor networks (WSNs) are increasingly used in many fields. Still, power supply of the nodes remains a challenge. Primary batteries are mainly used but energy harvesting offers an alternative, although not free ...

The sensor nodes of wireless sensor networks remain inactive most of the time to achieve longer runtimes. Power is mainly provided by batteries, which are either primary or secondary. Because of its internal impedance, a ...

This work analyzes the effect of inductive and capacitive coupling between the injecting circuit and the detecting circuit in resistive field surveys. Theoretical and experimental results demonstrate that if a square ...

This paper presents the analysis and experimental results on the noise performances of a capacitive-sensor interface. The interface is able to measure low capacitance values in the order of picofarads and is implemented ...

This paper proposes a novel method for demodulating low-frequency amplitude-modulated (AM) signals provided by sensors. The method relies on a digital timer that carries out the demodulation and digitization simultaneously, ...

A timer-based demodulator for low-frequency amplitude-modulated (AM) triangular signals coming from sensor circuits is presented in this work. The proposed circuit does not require a rectifier/mixer, a ...