major lobe
Học thuậtThân thiện
Definition
Noun: - The largest and most intense lobe in the radiation pattern of an antenna or transducer. It is the primary region where energy is concentrated and transmitted or received, typically oriented along the intended forward axis to create a directional beam effect.
Usage
The term "major lobe" is used to describe the principal, most powerful radiation region in a directional pattern. - The antenna's design focuses most of the transmitted power into its major lobe. - For optimal reception, the satellite dish must be carefully aligned so the major lobe of its radiation pattern points directly at the satellite.
Advanced Usage
- "Major lobe direction": Refers to the specific axis or bearing along which the center of the major lobe is oriented.
- Adjusting the array changes the major lobe direction to track the moving target.
- In antenna theory, the major lobe is contrasted with minor lobes (such as side lobes and back lobes), which represent radiation in undesired directions.
Variants and Related Words
- Main lobe: A direct synonym for "major lobe."
- Radiation pattern: A graphical representation showing the variation of field strength or power with direction, which contains the major lobe.
- Beamwidth: A measurement, often defined at the half-power points, describing the angular width of the major lobe.
Synonyms
- Main lobe
- Principal lobe
Antonyms
- Minor lobe
- Side lobe
- Back lobe
Noun
- the maximum lobe in the radiation pattern which is intended to be along the forward axis and which gives the effect of a beam