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How to find noise bandwidth of a parallel RLC circuit whose bandwidth is given.?

Please help me regarding ds question of Analog Communication..!

Find out the noise bandwidth of
i) Parallel RLC circuit having Bandwidth B=3 dB
ii) low pass RL filter having bandwidth fc=3dB
Could u please include some reliable source .. so that I can check how u arrived at a result ..!!
I want the answer urgently .. since i need 2 submit an assignment
PLease help me buddies..!

Answers below in Comments Section

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One Response to “How to find noise bandwidth of a parallel RLC circuit whose bandwidth is given.?”

  1. If I remember correctly the noise bandwidth is the same as the 3 dB bandwidth of both the parallel RLC circuit and the low pass bandwidth frequency fc. For the parallel RLC the bandwidth is equal to the center frequency Fo/Q. Where Q = R/woL

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