Abstract
In this paper, a low-cost chipless reader for detecting depolarizing tags is described. The reader operates in the frequency band (2-2.5) GHz, and it is compact and integrated in a single board. The reader architecture and its transmitting and receiving antennas are presented.
Reader antennas comprise two orthogonally placed, E-shaped patches with a decoupling below -35 dB. The reader performance is evaluated on a four-bit tag formed by four obliquely placed dipoles on top of a metallic ground plane. The reader is based on a frequency domain approach, is integrated in a single board, and its cost for a volume of 1k pieces is around $120.
Conference/Journal: MDPI Electronics 8(1), 35 (January 2019)
DOI/Source: https://www.mdpi.com/2079-9292/8/1/35
Keywords: Chipless RFID, Frequency domain, Low-cost reader, IoT
