Things To Learn About Antennas
You try to imagine holding out your hand and trying to catch pictures, information, and words passing by. That is more or less how an antenna functions. The antenna is the metal dish or rod that will catch radio waves and turn them into electrical signals that will feed a telephone system, radio, or television. These antennas are also called receivers. You need to know that the transmitter is actually another type of antenna which will do the opposite job of the receiver which is to turn the electrical signals to radio waves so that they can travel back and forth to space or travel around the world. You need to know that the key to almost all types of modern telecommunication today are the transmitters and antennas. So if you want to learn more about these antennas and transmitters, then you should consider reading this article.
You should know how these antennas function.
It is important for you to know how you will transmit your radio programs to the world if ever you own a radio station. You need to make use of microphones to catch the sound of voices and turn them to electrical energy. You will take that electrical energy and make it flow along a tall metal antenna. The electrons will be creating an electromagnetic radiation in the form of radio waves as it wiggle back and forth the metal antenna. These radio waves will travel at the speed of light and they will take the radio programs with them.
It is important for you to know that antennas and transmitters actually have the same design most of the time. For instance, if you have a satellite phone that can receive and send video or telephone calls to any parts of the world using space satellites, then the signals will be received and transmitted using a single satellite dish or a special type of antenna. But receivers and transmitters often look different from each other. The antennas for radio or TV broadcasting are huge and will go over a hundred feet into the air because they need to send powerful signals for very long distances.
You should know that waves don’t simply zap through the air. There are three ways in which waves can actually travel depending on how far you want to send them, what kinds of waves you want to send, and when you want to send the waves. The waves can actually travel from transmitter to the receiver by bouncing off the ionosphere, by line of sight, or through the ground wave.
You should take note that two antennas are needed in a radio. It is important for you to know that radio waves of different wavelength and frequency will carry the signals on the various wave bands. Click here now to know more about the functions of antennas.