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- W2089291123 abstract "Wirelessly powered passive sensors extract the required energy from external radiators. However, their sensitivity is typically worse than -20 dBm due to the limitation of the RF power harvesting. We study the theoretical and practical constraints on the RF power scavenging at low incident power levels. The concept of dynamic energy storage is introduced to enable the operation of the wirelessly powered passive systems at very low input power levels. The extra received power beyond the sensitivity level is stored and later used to enhance the sensitivity of the wireless sensor. As a proof of concept, an integrated wirelessly powered passive transponder with dynamic energy storage mechanism and sensitivity enhancement is designed and fabricated in a 0.13- μm CMOS technology. Based on the measurement results, the sensitivity of the wireless sensor with matching circuitry has been improved from -18.2 to -27.5 dBm at 900 MHz. The total chip area is 0.8 mm × 0.9 mm." @default.
- W2089291123 created "2016-06-24" @default.
- W2089291123 creator A5003381141 @default.
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- W2089291123 date "2014-04-01" @default.
- W2089291123 modified "2023-10-14" @default.
- W2089291123 title "Wirelessly Powered Passive Systems With Dynamic Energy Storage Mechanism" @default.
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- W2089291123 doi "https://doi.org/10.1109/tmtt.2014.2304713" @default.
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