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Cutting Edge Technology Wireless Technology

A Guide on 4G Antenna

4G antennas can operate under a MIMO environment. And this is considered one of its most significant features. MIMO stands for “Multiple Input Multiple Output” — our Internet modem makes use of this technology to deliver signals at warp speeds.  

When it comes to Next-G signals and normal 3G, the accurate description we can give with regard to their broadcast is that they are highly polarized. The wave they produce would be traveling in an “up and down” fashion.  

Compared to the LTE MIMO, the waves they produce are slanted polarized, with each wave rotating to about 45 degrees from the horizontal. Mirrored, this will render the first to be at 45 degrees while the other would be at 135 degrees.  

It is a smart trick, which they call polarisation diversity. It lets your ordinary modem distinctly identify two streams of independent data over the exact and same frequency being designated by a cell tower.  

Since our modem usually comes with two internal antennas that are primarily designed to receive one data stream, it makes it necessary to have on standby two separate antennas, external type. 

There is no way we can make use of a “Y” patch lead or any other trick for that matter just to make it a good possibility to connect both modem ports into a single antenna, nor try to connect one, single port to both external antennas.  

The modem itself is switching the MIMO on and off. The cell tower takes on the responsibility of determining whether the use of MIMO or not is viable, where transmitted and received signals are assessed in terms of their quality. This metric is referred to as CQI.

The modem is quite challenged when it needs to distinguish the two streams of data and the signal strength is slow or very poor in quality. This renders a certain threshold level to drop when the MIMO is off and the modem is operating only under one antenna.  

Why So Much Fuss Over Interference? 

The distinction that is existing between the signal strength and signal quality can’t be ignored all the time. The strength pertains to the information range where it can be interpreted correctly with respect to that particular waveform.  

The SINR or the C/I+N Ratio is of prime value here since 4G antennas negotiate its radio index bearer concerning the interpreted carrier signal strength over the noise level plus the interference strength – which means to say that the lower interference is, the higher chance of C/I+N to be. Consequently, it should pave the way for a much faster coding scheme and modulation.  

In any 4G network, the most prominent source of interference is no less than self-interference — this may come from the interference of other sectors originating from the base station, as well as from other similar base stations. 

Interference can also come from other sources including systematic(natural), gamma radiation, thermal, and hostile (unnatural), including high voltage transmission, machinery, and illegal booster, etc.  

How can a 4G antenna help here? 

Beamwidth. 

By making sure the beamed transmission is focused on a particular direction, we are rendering the strength to the spike in one direction, right at the expense of all the others.  

This can be taken advantage of to alleviate unnatural interference sources, including nearby machinery that tends to generate wideband noise as well as downplaying interference by virtue of reducing the strength of the interfering base station’s direction — all done and carried out while enhancing the target base station direction strength.

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Wireless Technology

Laird Antenna: The Importance of Using One

We can all agree that antennas have been around even before we were born. For the most common types, it would be radio and TV antennas that are also very much available. Antennas are utilized to transmit and receive electromagnetic waves. If you are not using antennas for your radio or TV, then no signal will be picked up from the stations. The channels that the TV set can show will be dependent on the antenna strength and how the signals are being picked up. The quality of the antenna, location where you put it, and the weather can greatly affect the quality of transmission and how many stations the device would be able to pick up. Today, there are so many reliable antenna brands that have come out in the market to better meet your needs. One of them is the best of class laird antenna.

Laird Antenna for Your Needs

TV Antennas

An antenna for your television is designed specifically to receive signals that are often transmitted at frequencies of 41-250MHz in a very high frequency band and 470-960mHz in ultra-high frequency band various countries across the world. As there are various antennas, they are also designed differently. This type of antenna consists of various conductors that come with varying lengths and they also correspond to the range of the wavelength that the antenna is specifically designed for. For an antenna to work, it should be used with a tuner that often comes with the TV set.

In addition, a TV antenna can be used both indoor and outdoor. For indoor use, it often comes in a smaller size. It has “ears” that could be adjusted in lengths in order to improve the signal. But it is important to note that this type of antenna is not as good as those that are mounted outdoors or on rooftops.

Antennas intended to be used outdoor are bigger and can receive more and better signals. But the problem is, this kind of antenna can be easily affected by the weather. For instance, if a strong wind is blowing outside, the position of the antenna can be changed, thus disrupting the signal. To avoid this, be sure to mount it on the highest window in the attic or building. This will help ensure good quality signal and prevent disruptions. For the downside, this type can be expensive. One more factor that could affect its signal quality is the location that is relative to the transmitted. If you are close to the transmitter, then the signal will be better.

Child Watching TV
Child Watching TV

Radio Antenna

How this type of antenna work is just like a TV antenna. This is a device that changes an electric current to radio waves and vice versa. Just like with TV, this has a receiver and transmitter. The signals are being transmitted as soon as the transmitter applies radio frequency to the current to the antenna terminals that radiates the energy as radio waves or also known as electromagnetic waves. When it comes to reception, the process is the same as the terminals start to detect the signal and the receiver decodes that it must be amplified. Click here to learn more about other antenna types.