March 3, 2023 at 6:51 pm
Khashayar Ghaffari
Ansys Employee

Hi,

This line plots the normalized response and the 3db threshold line. Please try the following as the full command:

plot(1e-9*w(2:Nw)/2/pi,20*log10(abs(H(2:Nw))/max(abs(H))) , log10(three_dB(2:Nw)),"Frequency (GHz)", " Normalized response (dB)","","log10x");

This script is similar to the vertical_photodetector_3dB_bandwidth.lsf available in the vertical photodetector example where transient response is reported. Feel free to use that file for further clarification/as a reference.

Best