Discussion
What is the chief advantage of a folded dipole besides its impedance?
Answer: D
The larger effective conductor diameter lowers the quality factor, so the impedance varies more slowly with frequency and the useful band widens. Its pattern and directivity are essentially those of an ordinary dipole, since the radiating current distribution is the same. It is still a balanced structure and still needs a balun when fed with coaxial cable, usually a four to one type which also completes the transformation to fifty ohms.
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