Figure 4
From: Enabling Covert Body Area Network using Electro-Quasistatic Human Body Communication
Spectrum Analyzer Measurement shows that the shielded standalone transmitter does not radiate. However, the transmitter when worn on the human body for EQS-HBC shows significant leakage (−48 dBm). Note that for the capacitive EQS-HBC, although both the device and free hands contain similar amount of signal (−54 dBm, −60 dBm respectively), the free hand shows negligible QS leakage (<−90 dBm).
