The wireless technology has always been preceded by wired technology and is generally more expensive, but has provided the added advantage of mobility, allowing the user to receive and transmit information while on the move.
Another important boost of wireless technology has been in the area of broadcasting communications, such as radio, television and direct transmission satellite. A single wireless transmitter can send signals to several hundred thousand receivers as long as everyone receives the same information.
Today, wireless technology encompasses communication devices as diverse as garage door openers, baby monitors, walkie-talkies and Smartphone , as well as transmission systems such as point-to-point microwave links, wireless Internet service and satellite communications.
Wireless chargers are another type of wireless device. Although no data is sent through a wireless charger, it does interact with another device (such as a phone) without using cables.
How does wireless technology work?
Wireless technology works because an electromagnetic wave , which travels through the air at the speed of light, can create, or "induce," an electrical signal on an antenna. If we can control this electromagnetic wave, then we can use it to communicate or to transmit information from one place to another are need of cables how wireless communication works.
The information is sent from one place, the transmitter , and is collected in another, the receiver , using an electromagnetic wave to transport it. The transmitters and receivers are located at each end of the wireless system , using an antenna at each end.
But to understand wireless technology it is first necessary to know the electromagnetic waves. Electromagnetic waves are usually sinusoidal. The frequency of an electromagnetic wave is the speed at which the signal vibrates. Specifically, the frequency of a wave is the number of times the wave is repeated in a second , and is expressed in Hertz. A 1Htz wave is repeated once every second. Can you imagine in honor of who put the Hertz unit, NO? As an example, FM radio signals vibrate about 100 million times per second.
Another important fact is the wavelength , which is the distance between 2 crests of a wave. Logically, the longer the wavelength, the lower the vibration frequency.. If it vibrates very fast (very often) the generated waves will be closer to each other and will have shorter wavelengths.
Now we can classify the electromagnetic waves according to their frequency or wavelength , and use some for one type of transmission and others for a different type, in this way we can send different types of information without interfering with some waves with others .
Thanks to the different frequencies ( electromagnetic bands ) that an electromagnetic wave can have we can emit two different signals simultaneously without their signals interfering with each other. We call the range or range of different frequencies an electromagnetic spectrum. The Governments of each Country are responsible for assigning frequency ranges for each specific purpose.
Licensed bands are owned by certain companies or facilities for specific purposes and cannot be used by anyone else. Bands without a license are free and anyone can use them, subject to certain rules. Licensed bands are generally free of interference and are more reliable, since there is control over who can transmit them.
Another important boost of wireless technology has been in the area of broadcasting communications, such as radio, television and direct transmission satellite. A single wireless transmitter can send signals to several hundred thousand receivers as long as everyone receives the same information.
Today, wireless technology encompasses communication devices as diverse as garage door openers, baby monitors, walkie-talkies and Smartphone , as well as transmission systems such as point-to-point microwave links, wireless Internet service and satellite communications.
Wireless chargers are another type of wireless device. Although no data is sent through a wireless charger, it does interact with another device (such as a phone) without using cables.
How does wireless technology work?
Wireless technology works because an electromagnetic wave , which travels through the air at the speed of light, can create, or "induce," an electrical signal on an antenna. If we can control this electromagnetic wave, then we can use it to communicate or to transmit information from one place to another are need of cables how wireless communication works.
The information is sent from one place, the transmitter , and is collected in another, the receiver , using an electromagnetic wave to transport it. The transmitters and receivers are located at each end of the wireless system , using an antenna at each end.
But to understand wireless technology it is first necessary to know the electromagnetic waves. Electromagnetic waves are usually sinusoidal. The frequency of an electromagnetic wave is the speed at which the signal vibrates. Specifically, the frequency of a wave is the number of times the wave is repeated in a second , and is expressed in Hertz. A 1Htz wave is repeated once every second. Can you imagine in honor of who put the Hertz unit, NO? As an example, FM radio signals vibrate about 100 million times per second.
Another important fact is the wavelength , which is the distance between 2 crests of a wave. Logically, the longer the wavelength, the lower the vibration frequency.. If it vibrates very fast (very often) the generated waves will be closer to each other and will have shorter wavelengths.
Now we can classify the electromagnetic waves according to their frequency or wavelength , and use some for one type of transmission and others for a different type, in this way we can send different types of information without interfering with some waves with others .
Thanks to the different frequencies ( electromagnetic bands ) that an electromagnetic wave can have we can emit two different signals simultaneously without their signals interfering with each other. We call the range or range of different frequencies an electromagnetic spectrum. The Governments of each Country are responsible for assigning frequency ranges for each specific purpose.
Licensed bands are owned by certain companies or facilities for specific purposes and cannot be used by anyone else. Bands without a license are free and anyone can use them, subject to certain rules. Licensed bands are generally free of interference and are more reliable, since there is control over who can transmit them.
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