The part of an antenna response pattern which is not contained in the main beam(noun)
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Use "sidelobe" in a sentence
"Posted Feb 15, 2006 at 12:57 PM | Permalink | Reply ian, you just described a generalized sidelobe canceller…"
"The correlated signals across the array, after blocking the desired signal, represents the sidelobe interference from just about anything, but usually a jammer of some sort."
"FWIW, a generalized sidelobe canceller is sort of the mother of all adaptive filtering schemes assuming multiple inputs."