2026-04-18T00:11:32Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/1172992026-02-07T02:18:13Zcom_2072_1033col_2072_452950

00925njm 22002777a 4500 dc Gomez Cid-Fuentes, Raül author Martínez García, Herminio author Poveda López, Alberto author Alarcón Cot, Eduardo José author 2012 Wireless Sensor Networks (WSN) present a pending challenge for a complete deployability due to energy requirements. The Self-Powered WSN approach aims to extend the sensor node life by means of Energy Harvesting. The harvested energy presents an erratic behavior in both time and frequency. In this paper, a new concept of switch-mode electronically tunable band-pass filters is presented to adaptively follow the power source variations and to maximize the power transfer. To implement these switch-mode filters, three alternatives are presented. These filter topologies are modeled and evaluated. Additionally, some design guidelines are provided. The results show how these high efficiency topologies present a band-pass behavior whose center frequency can be electronically tuned over one decade. The results target the integration of these high-efficiency switch-mode band-pass filters into the future harvesting front-ends. Peer Reviewed Postprint (published version) Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors Wireless communication systems Wireless sensor networks Adaptive filters Band-pass filters Energy harvesting Comunicació sense fil, Sistemes de Electronically tunable switch-mode high-efficiency adaptive band-pass filters for energy harvesting applications