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[SOLVED] Use of Capacitor in Pulsed PA drain supply

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ahsoopk

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Dear all,

I am designing a Pulsed PA and would like to know, should i use electrolytic capacitor or tantalum capacitor at the drain to cop with drain current during 1us pulse.

look forward to your help and support.

regards,
Malik
 

chuckey said:
You also need to decouple at your RF frequency (not given), for this you will need a low inductance film type in parallel.
Frank
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Dear Frank,

frequency of operation is 9 to 10GHz and i have included 0.8pF and 100nF capacitors close to the pins of the device and then included 1 x 22uF electrolytic with ESR of 2 Ohm and 2 x 22uF tantalums with ESR of 0.8 Ohms. .
 

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