Fig. 4: Voltage scaling example.
From: Electro-quasistatic and resonant cavity car body communication

Shows electric field plots with (a) 1 V excitation at 82 MHz in resonant cavity mode. b 14 mV excitation at 82 MHz in resonant cavity mode. c 1 V excitation at 10 MHz in electro-quasistatic mode and Ground (GND) planes of various excitation modes.