Purchasing Resources for Satellite Communications Components

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Satellite Communications Components

The need for good quality satellite components began with the launch of the first low-earth orbiting satellite in 1958. This satellite orbited several hundred miles over the earth and did not stay in contact with one area for more than 10 minutes. It circled the entire planet in 90 minutes.

The world experienced its first of many geosynchronous satellite systems in the early 1960s. These satellites orbit at a distance of 22,300 miles from the earth. One of these satellites makes contact with about 42% of the planet in a nearly stationary position, and one or two more satellites cover for the rest of the globe.

Today more than 150 satellites hover over the earth transmitting radio and television signals and important data. Companies service these satellite network systems with components such as receivers, amplifiers, antenna systems and reflectors. One of the most vital satellite network components is the power supply--whether a battery, solar cell or a combination of both. When looking for satellite communications hardware consider the following components:

1. Choose radio-frequency equipment for satellite.

2. Buy an antenna system.

3. Locate the right power supply for your satellite communications system.

Find receivers, amplifiers, RF multiplexers and other satellite radio components

Satellite communications function much like communications on the ground, but there are a few differences. The radio frequency, for instance, does not need to be nearly as strong as it is on the ground.
Try: Look at satellite receivers and other satellite communications components at Silicon Labs. These satellite receivers use an RF front-end fully-integrated single-chip for direct broadcast. Take a look at the transceivers, amplifiers and other satellite system components at Baluff, Inc.

Buy high-powered directional antennas for your satellite communications systems

Satellite antennas are different from ground antennas because, instead of receiving and transmitting signals north, south, east and west, they only focus toward the earth.
Try: Both Comtelco Antennas and A. H. Systems Inc. offer state-of-the-art satellite antennas, one of your most important satellite components.

Locate a power supply to complete your list of satellite communications components

A combination of solar panels, solar cells and batteries usually power the satellite.
Try: Take a look at Advanced Power Solutions and ROHM Electronics for your battery-operated satellite electronics component. Satellites need a good light-weight source of power. Sometimes a battery is used, other satellites use solar cells, and still others use a combination of both.

Transmitters used for satellites are weak. A satellite doesn't have access to local generators or power companies. Satellite system components must include solar panels covered with solar cells that provide most of the power for a satellite. Satellites must be prepared with rechargeable battery packs for the times when it is dark and the moon or earth blocks the sun rays.

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