# Wireless Waves and Frequencies  What are they? + Rates â· 2020

It is no secret to anyone that, at present, wireless networks have become a necessity, so they are widely used and humans basically depend on them. Especially thanks to the fact that, at this moment everything around us is connected to a network and, in many cases, without the need for cables.

In that sense, despite the fact that different types of networks can be achieved, the truth is that most of them are being replaced by wireless systems at an outstanding rate. Which are known as âWireless networks (or wireless)â and are characterized by their easy configuration. This, because they are composed of waves and frequencies Wireless.

Therefore, it is really important to know what a wireless network wave consists of, like a wireless wave frequency. Therefore, in this post, we will detail this information and let you know both wireless wave types and frequencies as also the main cycles of frequencies and waves.

## What is a wireless network wave and what is it used for in computing?

While it is true, in wireless networks there is no physical connection via cable between the receiver and the sender of the data. Since, it is kept connected by radio or microwave waves to facilitate communications. In this sense, wireless network waves are responsible for transmitting a radio signal at a certain frequency to carry out the communication process that must be carried out between the sender and receiver of the information.

So these elements serve to simplify communication between them through space. So, in short, the building block of communications of the type Wireless is a radio wave. Now, with respect to its operation, we highlight that, they are carried out thanks to an antenna that allows a transmitter to send energy into space and the receiver to collect or detect it. Thus, transmitters and receivers are designed to work in a limited frequency range.

## What is a wireless wave frequency and what is it for in networks?

Basically the entire pattern of a wave before it repeats, it is known as âcycleâ, while, the number of cycles that a wave repeats in one second, itâs called âfrequencyâ. So, a wireless wave frequency is defined as the number of times the latter is renewed in a given time. Usually the wave frequency is measured in the unit Hz (or Hertz) and this way, refers to several cycles per second.

Whereas, one thousand hertz is identified as 1 KHz (or Kilohertz), one million hertz is 1 MHz (or Megahertz) and one billion hertz is 1 GHz (or Gigahertz). In this sense, the wave frequency is an indication that serves to express the number of vibrations (or waves) of a sound source per unit of time. Taking into account that, this concept is the inverse of the wavelength; since, the higher the wavelength, the lower the wave frequency and vice versa.

That is, the longer the wireless network wavelength, the will be repeated less. Even if a wave moves from one medium to another, the frequency will be constant, but the length and speed will fluctuate.

## Types of wireless waves and frequencies What are all that exist so far?

In view of the fact that the transmitters and receivers that star in the wireless network waves are designed to operate in a limited range of frequencies, there is a classification that depends on the range of frequencies used to transmit these waves.

So, three types of wireless waves are distinguished based on the range of frequencies used to transfer them, which are:

### Satellite microwave

In this case, certain links are made between two or more ground stations that are called base stations. Thus, by means of it, the satellite receives the ascending signal in a frequency band, proceeds to amplify it and then retransmit it on another band which is the descending signal.

Due, each satellite operates on a specific band. In addition to that, the frequency boundaries of microwaves, are mixed with each other with infrared and high frequency radio waves. Reason why, there may be some interference with communications on specific wireless frequencies.

### Terrestrial microwave

For this, parabolic antennas with a diameter of approximately three meters are used. Which, mainly, are characterized by providing coverage of kilometers and for that, both the receiver and the sender they have to be perfectly aligned. Otherwise, the operation will be constantly truncated.

Therefore, point-to-point links are often used over short distances. In addition to this, it is a wireless system that covers frequencies from 1 to 300 GHz. However, it is possible that attenuation is caused by rain, being the most relevant because it operates at a much more eminent frequency.

### Infrared

It is defined as a system in which transmitters and receivers that modulate non-coherent infrared light are linked and for optimal operation, have to be aligned with a reflection on a surface or directly. Thus, infrared covers a range from 300 GHz until 384 THz.

However, it is worth bearing in mind that these they canât get through the walls in any way. On the other hand, it should also be noted that, according to the frequencies they use, two types of signals are distinguished Wifi or, failing that, networks Wireless that transmit data by means of electromagnetic waves.

Next, we highlight what they are:

• 4 GHz: This is the frequency of the wireless signals most used, because they have the ability to pass through walls and windows in a completely optimal way. Thus, there are numerous devices that use this lower transmission frequency and, therefore, they are more crowded and can interfere with each other.
• 5 GHz: By its very identification, it can be intuited that it is a higher frequency technology and thanks to that, is characterized by its capacity to reach higher speeds. Thanks to the fact that they are used by fewer devices and are more clear. But nevertheless, canât get through walls or windows and its range is shorter, generally.

## Frequency and wave cycles What are Hz, MHz and GHz?

While it is true, the cycle of a wave it is the smallest part of a repeating wave, since, it is defined as the complete pattern of it. In consecuense, consist of a positive and a negative cycleThanks to the fact that they all start at zero and end at zero, even the center also passes through zero. Now specifically when it comes to frequency and wave cycles, Hz, MHz and GHz come into play. Reason why, it is opportune to discern what each of them are about.

Next, we detail it:

### Hz or Hertz

Basically a Hertz It represents one cycle for every second, so it determines the frequency of a specific event. Being this, the main measure of a cycle of frequencies and Wireless waves. Taking into account that it refers to the unit of measurement of frequency in the International System of Units.

### MHz or Megahertz

This consists of one of the main multiples of the Hertz and is based on a unit of measurement of frequency that equals 106 hertz (that is, one million Hz). Thus, it is considered a unit that it is used very frequently to measure network waves and the working frequency of a device, for example.

### GHz or Gigahertz

This is another multiple of the unit of measure for frequency hertz or Hertz and basically one GHz equals 109 Hz (or one billion Hertz). Thus, they have an oscillation period of 1 nanosecond and are widely used in communication by satellite dish, so they also have the ability to compute the waves of wireless networks. Assessing that, radio waves with frequencies close to the GHz are known as âmicrowavesâ.

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