The current was measured by spectrum analyzer was used to
obtain the external current is shown in Fig. 12. After the
measurement, the results were calibrated by subtracting the
effect of the amplifier. The effect of the amplifier was found by
vector network analyzer. Table 1 shows that the measurement
results of the amplifier (Measured P
current was amplified (Amplified P
Hz
dBm
dBm
7
4
) and how much the
). After this value had
been subtracted from the measured value, the calibrated power