The RF amplifier A is having 3 dB NF & 5 dB of gain, amplifier B is having 3.5 dB NF & 15 dB. For overall noise figure of the cascaded system, the correct statement is:

A) A as first stage & B as second stage offers minimum over all NF B) B as first stage & A as second stage minimum over all NF C) Both the combination will offer same overall NF D) Over all NF will be less than 3 dB

Answer & Solution

Correct Answer: Option B

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The RF amplifier A is having 3 dB NF & 5...

The RF amplifier A is having 3 dB NF & 5 dB of gain, amplifier B is having 3.5 dB NF & 15 dB. For overall noise figure of the cascaded system, the correct statement is:

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