Hey everyone, thanks for coming back to another video of Wi Fi fundamentals with location and analytics. This course will help you to master the air. We are advancing and part three of antennas we will look at directivity and polarization. directivity is the shape of the beam. It can be narrow or wide. Its shape is measured in the greys and in most cases it is related directly to the antennas again, a low gain antenna has a wider beam, a high gain antenna as a narrow beam.

But beware, although it seems as if we can control the direction of our beam and aim it at specific locations. Our environment is full of physical objects, which, as we have seen in the RF last video, can change your single phase, path and amplitude. polarization is known mostly for its usage in the sunglasses industry. And it's quite the same. Our waves are actually comprised of two main forces, the electric field and its opponent the magnetic field. polarization is determined by the electric field.

It is the orientation of the signal as it cleaves the antenna. The electrical portion of the waves will always live the antenna in certain orientation, usually, vertically. When we hold our smartphones or tablet in a different orientation. They're actually in different polarization plane than the transmitter. device that can happen from time to time, and the result can be a bad signal. Next up antennas part four See you then