Extra exam question E9E02
Subelement E9, ANTENNAS AND TRANSMISSION LINES· Group E9E
What antenna matching system matches coaxial cable to an antenna by connecting the shield to the center of the antenna and the conductor a fraction of a wavelength to one side?
- A.Gamma match (correct answer)
- B.Delta match
- C.T-match
- D.Stub match
WhyA gamma match connects a coaxial cable's shield to the center of the antenna and its conductor a fraction of a wavelength to one side. A gamma match connects a coaxial cable's shield to the center of the driven element and its center conductor to a point a fraction of a wavelength off to one side, using a series capacitor to cancel the resulting inductive reactance and achieve a match, answer A. Delta, T, and stub matches use different physical connection arrangements, none of them matches this specific asymmetric, shield-at-center-conductor-off-to-one-side gamma configuration.
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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