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MONOPOLE-BASED RECTENNA FOR MICROWAVE ENERGY HARVESTING OF UHF RFID SYSTEMS

2012; The Electromagnetics Academy; Volume: 31; Linguagem: Inglês

10.2528/pierc12061501

1937-8718

Giuseppina Monti, Fabrizio Congedo, Danilo De Donno, Luciano Tarricone,

RFID technology advancements

This paper presents a rectifying antenna (rectenna) for the harvesting of the microwave energy associated to UHF (Ultra- High Frequency) Radio Frequency IDentiflcation (RFID) systems. The proposed device uses a capacitively loaded T-shaped monopole with a coplanar waveguide feeding line as receiving antenna and a flve-stage voltage multiplier as rectifler. Experimental results demonstrating an RF-to-DC conversion e-ciency of about 54% with an input power density of 80W/cm 2 will be presented and discussed.