Multi-Layer Flexible Chipless RFID Tag Based on Group Delay Encoding. - Raquel Aline A. Rodrigues Felix; Wilson Costa Felix; Edmar Candeia Gurjão (WF-IoT, 2020)

Soil Moisture Sensor with a Microstrip Band Stop Filter. - Wilson Costa Felix; Alexandre Henrique Soares de Oliveira; Raymundo de Amorim Junior; Débora Borges Nobre; Leandro de Oliveira Souto; Victor Emanuel da Silva; Raquel Aline Felix (WF-IoT, 2020)