Question

Calculate the l GHz impedance of a 100 Microfa rad Capacitor with a ½ inch lead on each end Assume resistance is essentially zero and inductance of connecting lead is 20 nanoH/inch Assuming a 100 Ohm power line impedance, how effective do you think this capacitor would be for bypassing 1 GHz spikes on the power supply line? Defend your answer. For comparison, calculate the 1 GHz impedance of a 0.05 microFarad Capacitor with 0.025 inch leads on each end. Again, assume resistance is essentially zero and inductance of connecting lead is 20 nanoH/inch. What would be the impedance of 10 of these 0.1 capacitors in parallel? How effective do you think these 10 in parallel would be in bypassing 1GHz spikes and harmonics?

Answer 1

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