sidelobe

[ˈsaɪdloʊb]
nounpl: sidelobes
lóbulo lateral
1. In antenna theory and signal processing, a secondary lobe of radiation or response that appears adjacent to the main lobe in the radiation pattern of an antenna or filter
The antenna's sidelobe suppression was critical for reducing interference in the radar system.
A supressão de lóbulos laterais da antena foi crítica para reduzir a interferência no sistema de radar.
2. An unwanted secondary response in the frequency domain that occurs alongside the primary response in digital signal processing
The filter design aimed to minimize sidelobe levels to improve signal clarity.
O projeto do filtro teve como objetivo minimizar os níveis de lóbulos laterais para melhorar a clareza do sinal.
This is a specialized technical term used primarily in engineering, telecommunications, and physics disciplines. It is rarely used in everyday conversation and is specific to antenna design, signal processing, and radar applications. Both Brazil and Portugal use the term identically in technical contexts, though the English term 'sidelobe' is often retained in academic and professional literature across Portuguese-speaking countries.
Synonyms / Sinônimos
secondary lobeminor lobesubsidiary lobe
Antonyms / Antônimos
main lobeprincipal lobemainlobe

Regional Variations

General Brazilian
lóbulo lateral
Standard technical term used in engineering and physics texts
Portugal
lóbulo lateral
Same as Brazilian Portuguese; technical terminology is standardized
Technical/International
sidelobe
Often retained in Portuguese technical literature as a loanword

Related Words

mainloberadiation patternantenna gainbeamwidthdirectivitynullgrating lobe
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