In order to verify the correctness and reliability of IENN model, the training sample sequences are achieved from input e of half-bridge CDPA shown in Figure 3.
For the experimental validation, the LFM signal is used as input e of half-bridge CDPA, whose center frequency is 30 kHz, amplitude is 8.5 V, bandwidth is 4 kHz, and training data length is 2.0 ms.
As shown in Figure 7 and Table 3, when the LFM signal is used as input of CDPA, the transient error of the VL and CNN model is very huge, and the output signal cannot be reconstructed accurately.
In further experiments, a 2PSK signal is used as input e of half-bridge CDPA, whose carrier frequency is 20 kHz, amplitude is 8.5 V, digital baseband signal is a 7-bit pseudorandom sequence (m sequence), baseband symbol width is 0.25 ms, and testing data length is 1.75 ms.
It can be seen in Figure 9 and Table 5 that with a 2PSK signal input, the VL and CNN model cannot reconstruct the CDPA output accurately, and the transient error is still very large.