“…The second setup, representing a transmitter architecture, used multiple interrogation frequencies (1.47, 2.45, 3.51, 4.51 and 5.52 GHz) with a noise bandwidth of approximately 1GHz. The tests were conducted in a small anechoic chamber with no additional RFI present, although the noise interrogation signal has previously demonstrated high immunity to RFI down to -20dB 20dB Signal-to-Noise Ratio (SNR) [4], [5], [6], [7]. The AmUT was connected to three different terminations (an "Open", "Short" and 50Ω Load) and interrogated in both the "on" and "off" state.…”