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Question 382

What is meant by the “main lobe” of a directive antenna?

  1. The magnitude of the maximum vertical angle of radiation
  2. The point of maximum current in a radiating antenna element
  3. The maximum voltage standing wave point on a radiating element
  4. The direction of maximum radiated field strength from the antennaCorrect answer

Explanation

The main lobe is a feature of the radiation pattern in space: the lobe containing the direction in which the radiated field strength is greatest. The choices about current and voltage maxima describe conditions on the element, not the pattern.

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Question 382: What is meant by the “main lobe” of a directive antenna? · FCC General Class (Element 3) · Questena