TERMIUM Plus®

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OCCULTATION OUVERTURE [1 record]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 1998-08-13

English

Subject field(s)
  • Radio Transmission and Reception
  • Radar, Radio Guidance and Goniometry
DEF

A blockage of or interfering with the radiation from the feed or secondary radiator by obstacles such as the feed itself or support struts.

OBS

aperture blockage: term and definition standardized by IEEE.

French

Domaine(s)
  • Émission et réception radio
  • Radar, radioguidage et radiogoniométrie
DEF

Effet créé par la présence d'obstacles situés devant l'ouverture rayonnante d'une antenne. Dans le cas d'une antenne parabolique avec source primaire centrale le masque créé par la source primaire elle-même, ses guides d'alimentation et son support, a pour effet de réduire le gain dans l'axe et de faire remonter le niveau des lobes secondaires.

Spanish

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