Please, explain the solution of following
时间：04-06
整理：3721RD
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A simple numerical example is appropriate. A 100 watt PA stage, running from
a bias voltage of 28V draws a peak current of 7 amps from the bias supply. Suppose
that the modulation is a sinusoidal variation from zero to peak power with a fre-
quency of 1MHz. If the bias supply has a total series inductance of 50 nH between
the device output tab and the main bias supply, the resulting voltage modulation at
the device output solder tab (drain/collector) will be 175 mV. If the modulation fre-
quency drops to 100 kHz, the voltage ripple will be 17.5 mV, and at 10MHz it will
be 1.75V.
a bias voltage of 28V draws a peak current of 7 amps from the bias supply. Suppose
that the modulation is a sinusoidal variation from zero to peak power with a fre-
quency of 1MHz. If the bias supply has a total series inductance of 50 nH between
the device output tab and the main bias supply, the resulting voltage modulation at
the device output solder tab (drain/collector) will be 175 mV. If the modulation fre-
quency drops to 100 kHz, the voltage ripple will be 17.5 mV, and at 10MHz it will
be 1.75V.
This is a question, a homework, or a statement?
it's example from the book. I want to know how he got the answer of 175mV