JFET High-frequency Analysis: A JFET common-source amplifier has Rth = 600 ohms, gm = 4 mmhos, Ciss = 7 pF, Coss = 4 pF, Crss = 3 pF, rd = 5 kohms, and Cstray = 50 pF. What is the gate cutoff frequency? The drain cutoff frequency?

Answer: The gate cutoff frequency fg is 3.96 MHz and the drain cutoff frequency fd is 589 kHz.

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