The required active cancellation is equal to ____ between the maximum non distorting input signal and the radiation level at the antenna.(a) half the difference(b) the difference(c) twice the difference(d) the correlationI have been asked this question in an interview.I need to ask this question from RF and IF Processing Tradeoffs topic in chapter Technology Tradeoffs in Software Defined Radio of Cognitive Radio

The required active cancellation is equal to ____ between the maximum

1.	The required active cancellation is equal to ____ between the maximum non distorting input signal and the radiation level at the antenna.(a) half the difference(b) the difference(c) twice the difference(d) the correlationI have been asked this question in an interview.I need to ask this question from RF and IF Processing Tradeoffs topic in chapter Technology Tradeoffs in Software Defined Radio of Cognitive Radio
Answer» Correct CHOICE is (b) the difference For explanation: The amount of active cancellation to be provided is equal to the difference between the maximum NON distorting input SIGNAL and the radiation level at the antenna. It is also given by the ratio of peak energy at the output of the RECEIVER antenna terminal to the maximum linear energy.

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