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السؤال 381

Which of the following measures a filter’s ability to reject signals in adjacent channels?

  1. Passband ripple
  2. Phase response
  3. Shape factorالإجابة الصحيحة
  4. Noise factor

الشرح

Shape factor compares the filter's bandwidth far down its skirts with its bandwidth at the reference point. The closer that ratio is to one, the steeper the skirts and the better the filter keeps adjacent-channel signals out.

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السؤال 381: Which of the following measures a filter’s ability to… · FCC Amateur Extra Class (Element 4) · Questena