There are two different concepts of radio waves behavior which are given below such as Gain, Loss.
Here are some simple concepts that are necessary to your understanding of RF and hence your ability to design, installs, and administers your wireless network. You need to understand the concept of gain, loss, reflection, refraction, diffraction, scattering, absorption, and free space loss.
Gain
Gain describes an increase in a radio frequency signal’s amplitude. Usually, gain is an active process. This means that you can use an external power source (such as an antenna) to amplify a signal, or you can use a high-gain antenna to focus the beam width of a signal to increase its amplitude.
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When teaching networking, we often use the example of throwing a rock into a river to teach the concept of attenuation. Think of going down to the water and throwing in a rock. You see an epicenter where the rock went in and waves rippling out from that epicenter. The farther you get from the center, the weaker the waves get. The concentric circles that you see are similar to the radio waves as they propagate away from the antenna.
When the antenna propagates the high-frequency AC signal into the air, it forms radio waves. These radio waves propagate, or move away, from the source in a straight line in all directions. Just imagine the rock going into the water. Read more →
Wireless Local Area Networks (WLAN) technology adopted by more and more educational institutes, in homes, businesses and now in every where you can find in public areas. Because of its flexibility and due to reduction in the cost of wires consumers are happy to employ this technology. According to recent survey millions were updated their way of networking because it’s cheapest ad comparing to wired networking technology. It also encouraged due to the upcoming standards.
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