parabolic
Light weighted antennas are used for communication
An XM satellite radio antenna cannot be used as a cell phone antenna as they use a different type of connection. Satellite signals operate on a different frequency from cell phones and use different technologies in their antennas as well.
Microwaves. These poke through the ionosphere to reach the satellite
A DTV antenna is used to capture digital television signals. By law, all television signals in the United States must be digital, and this type of antenna is used by customers who do not subscribe to satellite or cable services.
They do not make very good antennas though.
despun antenna is used in spin stabilization of cylindrical shaped satellite in which this abtenna is mounted on the top of the cylindrical satellite and the cylindrical body of the satellite keeps spinning around its vertical axis while the despun antenna on the body keeps following the specific area on the surface of the earth.
Communication Satellite, launch and used by Philiipines
introduction of satellite based communication
Advantages; they always appear to be in the same spot in the sky, so you can focus your satellite dish antenna on them. Disadvantages; they are quite high, about 23,000 miles up. You need a fairly strong signal to hit them, and a handheld device often doesn't have enough power.
AnswerThe term microwave is associated to electromagnetic waves of frequency of the order of MHz .Since the energy carried by the wave is directly proportional to their frequency they are of great use in distance communication. For a simple microwave communication system, a radiator ,a reflector and one receiver antenna are essential. As the wave penetrates through the atmosphere a satellite reflector is usually used. Satellites use Microwaves to send signals.
A satellite.
It uses satellite type communication which is much better than the old cable techniques as it has high clearity and good quality pictures