Astrophysics (Index)About

feedhorn

(feature of microwave receivers)

A feedhorn (or feed horn) is a horn-shaped feature of a microwave telescope receiver (antenna) which contributes to the receiver's directionality and efficiency. It is a type of horn antenna (antenna incorporating a horn-shaped waveguide for the sent/received signal), the word "feed" used when the antenna serves as the receiver, such as for a microwave reflector telescope. The term feedhorn array is used for a focal plane array consisting of feedhorn receivers; while a single feedhorn might be on the order of a foot or meter in size, feedhorn arrays can have them with tiny feedhorns, on the order of a cm or less.


(instrument type)
Further reading:
https://en.wikipedia.org/wiki/Feed_horn
https://en.wikipedia.org/wiki/Horn_antenna
https://safe.nrao.edu/wiki/bin/view/KPAF/Pictures
http://www.setileague.org/hardware/feedchok.htm
https://www.gb.nrao.edu/mustang/
https://www.nist.gov/image/advactpicspng
https://ui.adsabs.harvard.edu/abs/2018SPIE10708E..4BS/abstract

Referenced by pages:
BINGO
focal plane array (FPA)
multichroic feedhorn array
quad-ridge flared horn (QRFH)

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