Research Article

Antipodal Vivaldi Antenna to Detect UHF Signals That Leaked Out of the Joint of a Transformer

Figure 18

Waveform of the signal received by antennas with three different metal boxes and the rectangular plane spiral antenna.
(a) Waveform of the signal received with the antenna shown in Figure 15(a) and the rectangular plane spiral antenna
(b) Waveform of the signal received with the antenna shown in Figure 15(b) and the rectangular plane spiral antenna
(c) Waveform of the signal received with the antenna shown in Figure 15(c) and the rectangular plane spiral antenna