An 868MHZ passive temperature sensing transponder using a self-biasing UHF rectifier with -10.5dBm sensitivity in low-cost 0.35µm CMOS

Stanitzki, AlexanderAlexanderStanitzkiMarzouk, Abdel MoneimAbdel MoneimMarzoukFeldengut, TobiasTobiasFeldengutKolnsberg, StephanStephanKolnsbergKokozinski, RainerRainerKokozinski2022-03-112022-03-112011https://publica.fraunhofer.de/handle/publica/372834An 868MHz passive temperature sensing transponder in low-cost 0.35µm CMOS technology is presented. The transponder uses a self-biasing UHF rectifier achieving -10.5dBm sensitivity. Measurements are shown of the fabricated demonstrator including the RF frontend, rectifier and voltage regulator, a bandgap voltage reference and temperature sensor as well as the analog-to-digital converter and digital baseband. The device implements a subset of the ISO/IEC 18000-6 protocol and can communicatewith standard EPC readers.entransponderUHFpassivesensorrectifierfront-endvillard621An 868MHZ passive temperature sensing transponder using a self-biasing UHF rectifier with -10.5dBm sensitivity in low-cost 0.35µm CMOSconference paper