Small-Signal Modulation Frequency Response
The small-signal modulation frequency response were found using a electrical network analyzer (ENA_1 on Fig. 4.) at -10dBm power. The data is exported and compiled to one graph on Matlab. By changing the operating current to 1.2*Ith , 2*Ith , and 5*Ith , we find that as the operating current increases, so does the magnitude of the response. This is clearly seen in Fig. 11. , where the blue curve representing 5 *Ith has higher magnitude than at lower current. A separate graph in Fig. 12. shows the response at chosen modulation high and low currents(1.5*Ith and 4.5*Ith), which has the same trend.