Discussion
What is a folded dipole?
Answer: B
The folded dipole is a loop of two closely spaced parallel wires, one broken at its centre for the feed, and it behaves as a dipole with four times the input impedance. The extra conductor also widens the bandwidth appreciably. Bending an element changes the pattern, turning the ends back is a shortening technique, and stacking is an array arrangement. The folded form is the standard driven element in Yagi arrays for exactly the impedance reason.
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