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What provides the sufficient drive to the final power amplifier?

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What provides the sufficient drive to the final power amplifier?

(a) Intermediate-power amplifier

(b) Operational amplifier

(c) Power driver circuit

(d) Up converter

I got this question at a job interview.

My enquiry is from Satellite Applications topic in division Satellite Communication of Avionics

1 Answer

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Correct choice is (a) Intermediate-power amplifier

Explanation: The power amplifier usually begins with an initial stage called the intermediate-power amplifier (IPA). This provides sufficient drive to the final high-power amplifier (HPA).

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