Fig. 8
From: Design of a textile-based UHF RFID sensor for high read range and multilevel diaper moisture sensing
(a) Frequency vs. read distance in different moisture levels of 0.9% saline solutions. (b) Moisture level of 0.9% saline solution vs. read distance and power on tag forward at 915 MHz. (Inset in (a) shows the measurement setup with the antenna placed inside the diaper as indicated by the arrow).
