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![]() | Text and/or other creative content from Antenna effective area was copied or moved into Antenna aperture with [permanent diff this edit]. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists. |
Generally, antenna gain is increased by directing radiation in a single direction, while necessarily reducing it in all other directions since power cannot be created by the antenna. Thus the higher the gain, the larger the aperture and the narrower the beamwidth.
Does this mean the beamwidth will become narrower as a result of a larger aperture, or are beamwidth and aperture size independant variables that both affect gain? 121.45.235.106 12:34, 17 September 2007 (UTC)
I want to pose a question related to above texts and I would be so happy if someone answer it. For aperture type of antenna, we have the maximum reachable directivity formula which is depend on the effective aperture area and lambda^2. I want to know if it is a general fact and is true for the maximum directivity in all types of antenna? In another word, supposing an area with a specific size as an antenna, what is the maximum directivity we could expect from that. please consider using any types of antenna including phased arrays and also mention which antenna type can lead to the most directivity for a specified antenna size. — Preceding unsigned comment added by Reza.naderi.j ( talk • contribs) 09:08, 5 February 2020 (UTC)
It is claimed that large dish antennas can have apertures nearly equal to their phyisical areas. That is equivalent to nearly % 100 efficiency. But in article antenna effective area maximum reported efficiancy has been given as % 85. Nedim Ardoğa ( talk) 03:07, 10 February 2010 (UTC)
-- Chetvorno TALK 14:46, 29 March 2012 (UTC)
![]() | This article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||
|
![]() | Text and/or other creative content from Antenna effective area was copied or moved into Antenna aperture with [permanent diff this edit]. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists. |
Generally, antenna gain is increased by directing radiation in a single direction, while necessarily reducing it in all other directions since power cannot be created by the antenna. Thus the higher the gain, the larger the aperture and the narrower the beamwidth.
Does this mean the beamwidth will become narrower as a result of a larger aperture, or are beamwidth and aperture size independant variables that both affect gain? 121.45.235.106 12:34, 17 September 2007 (UTC)
I want to pose a question related to above texts and I would be so happy if someone answer it. For aperture type of antenna, we have the maximum reachable directivity formula which is depend on the effective aperture area and lambda^2. I want to know if it is a general fact and is true for the maximum directivity in all types of antenna? In another word, supposing an area with a specific size as an antenna, what is the maximum directivity we could expect from that. please consider using any types of antenna including phased arrays and also mention which antenna type can lead to the most directivity for a specified antenna size. — Preceding unsigned comment added by Reza.naderi.j ( talk • contribs) 09:08, 5 February 2020 (UTC)
It is claimed that large dish antennas can have apertures nearly equal to their phyisical areas. That is equivalent to nearly % 100 efficiency. But in article antenna effective area maximum reported efficiancy has been given as % 85. Nedim Ardoğa ( talk) 03:07, 10 February 2010 (UTC)
-- Chetvorno TALK 14:46, 29 March 2012 (UTC)