Title: Describe the focal point and the focal distance of a dish.
Course: Telecommunications II (10006-II) > Section: Examining Digital Telephones

Description should include

- the terms associated with parabolic reflectors, including diameter, vertical height, focal length, and focal point
- the mathematical relationship between the dish characterization quantities (F=D*D/16H) and (F/D=1/[4Tan(Θ_0/2)])
- the importance of the reflected signal being a collimated beam.

Process/Skill Questions:

- Why are parabolic reflectors used for satellite communications?
- What measures are necessary to calculate the focal point of a parabolic reflector?
- What is the meaning of collimated radiation?
- Why is it desirable to have a collimated beam of radiation from a satellite antenna?