0
A satellite uses a Parabolic reflector,
What are the mirrors used for? A parabolic reflector (or dish or mirror) is a reflective device used to collect or project energy such as light, sound, or radio waves. Its shape is that of a circular paraboloid, that is, the surface generated by a parabola revolving around its axis. The parabolic reflector transforms an incoming plane wave traveling along the axis into a spherical wave converging toward the focus. Conversely, a spherical wave generated by a point source placed in the focus is transformed into a plane wave propagating as a collimated beam along the axis
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
How a curved reflector is used as a satellite dish receiver?
The reflector piece of a Dish satellite is curved in order to receive the proper signals from the orbiting satellites in space (also known as orbital locations). In order to view a specific satellite channel, each Dish reflector is designed with a different curvature.
Why might a parabolic reflector horn type microwave antenna be preferable to a parabolic dish type microwave antenna?
The reflector horn type antenna has greater "side lobe" rejection, directionality and sensitivity (efficiency) than a dish type.
What type of satellite dish provides a clear tv image?
DISH!
What do satellite dishes do?
A satellite dish is just a reflector of radio waves, and made in the shape of a parabola. The actual aerial bit is placed at the focus of the parabola, so you are getting all the energy that fell on the area of the dish. It will receive the energy transmitted from a particular satellite - usually an entertainment one.
What is a statelite dish?
Satellite Dish is a dish-shaped type of parabolic antenna designed to receive microwaves from communications satellites, which transmit data transmissions or broadcasts, such as satellite television.
What is a spherical dish antenna required for satellite tv reception?
The parabolic antenna is really not an antenna at all - but a collector/reflector, which catches and concentrates RF (radio frequency) into a tiny antenna mounted above the dish, pointed into the dish. Since satellites transmit at very high frequencies (microwave), the actual antenna can be shorter than one inch. To strenghen the signal and make aiming the antenna at the satellite easier, the parabolic reflector picks up a wider area of RF.
Would the cross section of a satellite dish be modeled by a linear or a quadratic equation?
The satellite dish is a parabolic reflector. A parabola cannot be modeled by a linear equation because a linear equation is one that graphs as a straight line. It takes a second degree expression to plot it, and that means a quadratic equation.
Does a radio telescope have a dish reflector?
Yes.
What is a statelite?
Satellite Dish is a dish-shaped type of parabolic antenna designed to receive microwaves from communications satellites, which transmit data transmissions or broadcasts, such as satellite television.
Does it matter what satellite dish you get?
If I'm understanding your question correctly, it does matter what type of satellite dish you get to go with a particular satellite receiver such as a Dish Network receiver. Even the type of satellite receiver or programming selection can require a different type of Dish as all receivers pick up different satellites in orbit. Dish Networks new receivers, such as the Vip 722 and Vip 922 require a 1000.4 Dish. If you meant what company to go with, do your homework and shop around. Make sure you understand the promotional price that you will get initially, and then what your cost will be when the promotion ends. In my opinion, Dish Network has the best deals around.
Why the parabola used in satellite dish?
Parallel rays, such as those from a very distance source, are focussed by a parabolic reflector so that they all meet at the focus of the parabola. This results in a stronger signal.
What are the requirements for start up a satellite TV?
To set up a satellite television system, you will need the following equipment: * A Satellite Dish: This is a parabolic reflector which can be made of solid aluminum, perforated aluminum or wire mesh. It is by far the most visible part of a satellite system. The dish can be small, such as a KU-band dish which is 3-4 feet, average that is 7-12 feet, or the big commercial C-band dish which is 16-20 feet. The 10 feet size dish is the most commonly used one. The dish helps to relay the microwave signals coming from the satellites. * A Mount: A mount is set on a 3-inch pipe which is in turn set in the ground with concrete. The most popular type of dish mount is the Polar Mount, which is so called as it is developed to coincide with the earth
