SENTHIL KUMAR
Banned
- Joined
- 13 May 2015
- Messages
- 302
- Reaction score
- 474
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Scalar ring and it's usage.
The scalar ring assembly amplifies the signals which are arriving from the one specific satellite that is the most perfectly in line with a perpendicular beam to the center of an imaginary plane of the dish reflector.
Signals from that satellite which strike the outer areas of the dish, where it might be less efficient for amplification, are reflected back to the dish by the scalar rings and refocused and concentrated better towards the throat of the waveguide of the LNBF or feedhorn.
Otherwise weak signals will be amplified suffiiciently for the receiver to lock on to that signal and provide a more stable signal quality.
signals coming from off the edges of the dish, I think that they also function to increase the efficiency of the outside portions of the dish for the desired signals. Signals hitting close to the middle of the dish (talking prime focus here) go into the throat of the feedhorn at a pretty direct angle, and don't have any problem, but signals coming from the edges of the dish are once again reflect to dish centre and back to feedhorn.
Finally in satellite antennas, scalar rings are used to push the spread signal into the feed horn.
Scalar ring and it's usage.
The scalar ring assembly amplifies the signals which are arriving from the one specific satellite that is the most perfectly in line with a perpendicular beam to the center of an imaginary plane of the dish reflector.
Signals from that satellite which strike the outer areas of the dish, where it might be less efficient for amplification, are reflected back to the dish by the scalar rings and refocused and concentrated better towards the throat of the waveguide of the LNBF or feedhorn.
Otherwise weak signals will be amplified suffiiciently for the receiver to lock on to that signal and provide a more stable signal quality.
signals coming from off the edges of the dish, I think that they also function to increase the efficiency of the outside portions of the dish for the desired signals. Signals hitting close to the middle of the dish (talking prime focus here) go into the throat of the feedhorn at a pretty direct angle, and don't have any problem, but signals coming from the edges of the dish are once again reflect to dish centre and back to feedhorn.
Finally in satellite antennas, scalar rings are used to push the spread signal into the feed horn.
