D 9.48 Refer to Example 9.6. Give an expression for.ωH in
terms of Cgs R′sig(note that (R′sig = RG || Rsig) Cgd, RL′,and gm. If all component values except for the generator resistance
Rsig are left unchanged, to what value must Rsig be
reduced in order to raise fH to 200 kHz?