M-R-R-S

Chapter 17: Microwave and radio Based System

History for Microwave

Percy Spencer open an idea for microwave. Under the company name Raytheon Company, Spencer discover the idea of  using microwave in preparing food. This idea that Percy Spencer has become big after the World War II. The microwave oven was that was invented by Percy Spencer has developed and become widely used in Radio systems.It become hit at the world market that has been expected to grow its market in global will reach to approximately $10 billion in 2006.Microwave has also become a vital link in the overall backbone networks over the years.

Microwave

A microwave is ranges from 3-300Ghz which is the high way for any wireless data communication. Over the years, radio communication is the most common use for wireless communication and it is using the free space or the frequency spectrum. In radio and telecommunications, the frequency spectrum can be shared among many different broadcasters. Each broadcast radio and TV station transmits a wave on an assigned frequency range, called a channel. When many broadcasters are present, the radio spectrum consists of the sum of all the individual channels, each carrying separate information, spread across a wide frequency spectrum


As the wireless communication progresses though years, the spectrum that is suppose to transport data in wireless could be over populated. The engineers were able to use the idea that Raytheon company was first been developed, the microwave oven by Percy Spencer. Engineers uses the idea that was implemented in microwave oven and make it as the solution for the frequency spectrum problem. Microwave radio communication provide a much higher spectrum to be use for data transmission. Microwave communication is known as a form of "line of sight" communication, because there must be nothing obstructing the transmission of data between these towers for signals to be properly sent and received.




Microwave communication has a wide bandwidth that  VHF cant provide. Microwave could have a multiple channels to accumudate and this is one way to lessen the traffic happening in the spectrum.  It also has no cable use that it could transmit data even way far in distance. Though microwave has its own delimitation or the scope where as microwave could not be able to penetrate against any obstacle like buildings, mountains, and other stuff.  In many situations, microwave systems provide more reliable service than land lines, which are vulnerable to everything including flooding, rodent damage,backhoe cuts, and vandalism. Using a radio system, a developing country without a wired communications infrastructure can install a leading−edge telecommunications system within a matter of months. For these reasons, regions with rugged terrain or without any copper land-line backbone in place find it easier to leap into the wireless age and provide the infrastructure at a fraction of the cost of installing wires.