If you are interested in electromagnetism, we can say that an FM radio transmitter is quite an awesome tool. Sadly, there are not many people today listening to radio stations, mainly because wireless streaming media has become easily available everywhere. However, what not too many people know, is that the radio signal is basically the essence of the high-speed Internet we are using today as well as mobile technology.
The way the radio transmitter works greatly depends on the oscillator. It creates a so-called carrier signal of a specific frequency. When you need to control this signal, you need to use a voltage modulator to do it. In case there isn’t a voltage modulator, the frequency will be transmitted at a predefined frequency signal. The signal is then transmitted further with the help of antennas.
If we have to explain how the circuit of great-performing transmitters operates, we have to say that there are two main categories here: transmission and origination.
What Do You Need To Know About Origination?
At the beginning the radio signals start as sine waves, it basically starts without any information in it. When it begins to receive electromagnetic signals, at that time its information is written in it. If you have ever wondered what FM means, it is short for frequency modulation and it means that it can reproduce the sound from the beginning and this is one of the reasons why FM stations can deliver high-quality music.
What You Need to Know About Transmission and Reception?
Once the sound changes to sine waves the radio signal transmission begin. In order to transmit the signal to FM receivers, the sine signal lengths are being modified using frequency modification.
The electrical signals are being broadcasted through an antenna at a rate closely related to the carrier frequency. This creates an electromagnetic field that emits electromagnetic waves at a frequency that can be captured by the antenna. Since the antenna receives a huge amount of radio signals a tuner helps us listen to the channel we want.
The radio has a detector that transforms these signals into sounds and the amplifier boosts the volume. Based on everything said, the most powerful radio station will have the best coverage.
In some cases, we won’t be able to listen to the radio station. Most of the time the reason for this is because of the short waves that cause transmission failure. These short waves are being transmitted in a straight line of the earth’s surface and since the Earth is round these waves get interrupted or affected by hills and mountains.
Today the technology is evolving rapidly. The radios come with integrated antennas and a huge number of radio stations are available on the Internet. The technology managed to start with a simple radio signal and now they are used for navigation and in GPS networks. The best of all is that the radio transmission technology we need to use and transmit powerful radio signals is pretty affordable and represents an excellent example where we get great value for the money invested, all thanks to the advanced technology being used today.