Cytostatic response of NB69 cells to weak pulse-modulated 2.2 GHz radar-like signals

The present study investigates the response of two human cancer cell lines to a 24-h treatment with a 2.2-GHz, pulse-modulated (5 µs pulse duration, 100 Hz repetition rate) radar-like signal at an average SAR = 0.023 W/kg, using a newly designed setup for in vitro exposure to radiofrequency (RF) fields. A complete discretized model of the setup was created for numerical dosimetry using finite-difference time-domain (FDTD) software, SEMCAD X. The average dose of RF radiation absorbed by the cultures was calculated to be subthermal (ΔT