Author Box
Articles Categories
All Categories
Articles Resources

Sources, Effects And Solution Of RF Signal Loss

December 09, 2011 | Comments: 0 | Views: 172

When radio frequency signal are generated by an RF source, it is expected that the same amount of signal generated and transmitted will be received by the receiver. But this is not always the case. This is as a result of signal loss which usually characterize transmission and reception of RF signals.

In order to understand the meaning of RF loss and its impact on RF propagation, there is a need to understand the behavior of RF signal itself.

Radio frequency signals (RF) are high frequency ac signals generated by RF device and pass along a metallic conductor (e.g. copper wire) and then radiated into the air through an antenna. What happens is that electrical signal in the metallic conductor get converted into wireless signal by an antenna at the transmitter end and the reverse is the case at the receiver end. Antenna produces radio waves at the transmitter end which propagates away from the RF device source in a straight line in all direction.

However, between the RF device source and the transmitting antenna, a lot of loss will usually occur. So also, between the transmitting antenna and the receiving antenna there occur signal losses. RF signals act erratically under given circumstances.

Loss basically can be defined as reduction in signal strength. A lot of factors can cause RF signal loss. Firstly the resistance of connectors and cable can cause signal loss as a result of signal conversion from electrical energy to heat energy.

Secondly, impedance mismatch at the interface between the cable and connectors can also cause power to be reflected back to the transmitting device which can result in signal distortion or equipment burn out in a severe case.

Thirdly, air resistance can also cause.

Lastly, objects like trees, hills, building etc in between the transmitting antenna and the receiving antenna can reflect, absorb, diffract or totally destroy RF signal thereby resulting in RF loss.

Therefore, the knowledge of the loss of RF signal during transmission should guide RF specialist in measuring and compensating for this loss in order to have efficient transmission and reception. It should be noted that receiver has a defined sensitivity threshold which is described as the point at which wireless device can clearly distinguish between intelligible signal and noise.

If it is observed that losses occur between RF transmitter and receiver during transmission, then, the loss can be corrected either by removing the erring objects causing the problem if identified, or by increasing the transmission power or by changing the antenna orientation or increase the height of antenna on the tower if you can still go higher.

All the itemised points above must be avoided in any reliable network both at the design and implementation stages.

Tunde Akande Sofolahan is a University trained engineer with special interest in Electronic/Electrical, Computer and Telecoms Engineering fields. He is an author, and also an internet consultant. Tunde has about 12 years experience in internet marketing and consultancy. He has helped a good number of people to grow their businesses successfully. Tunde loves showing people all they need to know about setting up and managing online and home based business in order to succeed. He is transparent in dealing with people and very honest. He has rendered quality services to individuals, corporate bodies and government. Tunde is born again Christian, married with children.

For more information about the author, please visit

or mail

Source: EzineArticles
Was this Helpful ?

Rate this Article

Article Tags:

Rf Signal Loss


Transmitting Antenna


Causes Of Signal Loss


Rf Loss


Em Propagation Loss Solution

After the classic Legend and after the modification, HTC now has launched HTC One V in the market. This is simply one of the most desirable looking phones available at any price.The HTC One V comes

By: Wilson Roy l Communications > Mobile Cell Phone l November 24, 2012 lViews: 251

Nowadays, there has been a number of smartphones released from a number of manufacturers which share a lot of features in common. LG cell phones represent cutting-edge technology that brings the

By: Wilson Roy l Communications > Mobile Cell Phone l November 11, 2012 lViews: 247

RIM stands for Research in Motion and this firm has truly been proving its name. One can see the evolution the blackberry brand has undergone and the new phones are simply a proof of all this. Now

By: jacke adoms adoms l Communications > Mobile Cell Phone l October 30, 2012 lViews: 328

Nokia phones have made their impact in the mobile phone industry all over. They have something to do with every market. Now even the online markets are getting their top notch products and the whole

By: Olivia Slater l Communications > Mobile Cell Phone l October 26, 2012 lViews: 328

Each phone in the market has its special characteristics that it likes to boast about. The Blackberry brand from the RIM is one of the world’s leading business phones and with each model being

By: jacke adoms adoms l Communications > Mobile Cell Phone l October 18, 2012 lViews: 291

In fact, an information and communications technology explosion is taking place and the entire human society is becoming increasingly dependent on the internet and hi-tech phone systems. This

By: Jmsallen l Communications > VOIP l July 17, 2012 lViews: 376

With the wide use of mobile phones for communication why is it that the good old portable radio is still used by security personel and police forces everywhere. This is a look at what benefits a

By: David Harlandl Communications > Radiol June 13, 2012 lViews: 213

Nothing drives a focused person like myself more crazy than an unfocused person who has no idea what is best for themselves. You know what I'm talking about. The type of person who has all the

By: Tony Brueskil Communications > Radiol June 12, 2012 lViews: 191

Traditional first responder mobile command vehicles are costly and unable to access many post-disaster locations. New man-portable technologies are augmenting and replicating legacy vehicle

By: Mark Luekerl Communications > Radiol June 06, 2012 lViews: 165

With modern technology, networking and automation the good old days of starting in radio hosting a mid-dawn shift so you can learn the craft is all but dead. Community can sometimes be a great place

By: Jamie McDonaldl Communications > Radiol June 02, 2012 lViews: 164

There is a method to the madness when it comes to promoting a product or service, with no understanding of that method, often times a radio commercial crafted by someone who does not know how to

By: Tony Brueskil Communications > Radiol May 26, 2012 lViews: 188

Do you have a disaster preparedness plan? If so, do you have an emergency communications plan as part of it? How will you communicate with family, friends or others if cell phones, landline phones,

By: Andrew Bazel Communications > Radiol May 20, 2012 lViews: 219