Extra exam question E9C08
Subelement E9, ANTENNAS AND TRANSMISSION LINES· Group E9C
What is a folded dipole antenna?
- A.A dipole one-quarter wavelength long
- B.A center-fed dipole with the ends folded down 90 degrees at the midpoint of each side
- C.A half-wave dipole with an additional parallel wire connecting its two ends (correct answer)
- D.A dipole configured to provide forward gain
WhyA folded dipole antenna is a half-wave dipole with an additional parallel wire connecting its two ends. A folded dipole antenna is a half-wave dipole with an additional wire connected in parallel between its two end points, forming a narrow loop, which is what gives it its characteristic wider bandwidth and higher feed point impedance compared to a plain dipole, answer C. It isn't simply a quarter-wavelength dipole, isn't built by folding the ends down 90 degrees, and isn't specifically configured for forward gain, none of those describes the actual folded-dipole construction.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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