Why rf communication

These behaviors determine whether you receive enough of an RF signal to actually use the wireless network! Basic explanations of the RF signal behaviors are below-. The combination of the behaviors above determines where and how the signal travels through a specific environment. The radio frequency signals have to deal with obstacles and sources of interference before reaching you and your device. Overall, there are many RF behaviors that affect the signal as it leaves the transmitter in our case, the antenna on a wireless access point and travels toward the receiver whatever device you are trying to connect and use over the Wi-Fi.

Hopefully, this blog gives you a better idea of what is happening on the back end as you use a Wi-Fi network in your daily lives. We use cookies for traffic analytics and ad and content personalization. By clicking on any of the content or interacting with any section of this website, you are agreeing to this use of cookies in the manner described in our Privacy and Cookies Policy.

With the exemption of the low-frequency segment, every band denotes an increase of frequency similar to an order of magnitude. The following RF spectrum bands table shows the 8-bands in the RF spectrum, showing the ranges of frequency and bandwidth. The SHF super high frequency and EHF extremely high frequency bands are frequently referred to as the microwave spectrum. For instance, by increasing the power of a transmitter, a larger communication distance will be reached.

But, this will also result in a higher electrical power drain on the transmitter TX device, which will root smaller operating life for battery-powered devices. Also, with a higher transmit power will make the system more disposed to interference with an extra RF device. Correspondingly, increasing the sensitivity of the receiver will also rise the active communication range, but will also possibly cause an error due to interference with additional RF devices.

The performance of the whole system may be enhanced by using corresponding antennas at each end of the communication link.

Lastly, the considered remote distance of any specific system is usually measured in an open-air line of sight outline without any interference, but frequently there will be problems like floors, walls, dense construction to grip the radio wave signals, so the current operational distance will in most real examples be less than specified.

Thus, this is all about radio frequency wireless technology working and its applications. In addition to the link for the remote controller to the controlled device, there is an additional link backward from device to the controller. This backward link may be used for securing the robustness of the remote link by using handshake protocols and giving feedback to the user.

The receiver may clearly identify any bit errors by recalculating the CRC values of the received data frame and compared with the one generated before transmission. The systems allow one-way communication between two nodes namely transmission and reception. The RF modules have been used in conjunction with a set of four-channel encoder and decoder ICs.

The encoder is used for encoding transmission data while the reception is decoded by the decoder. The encoder will be used for transmitting the data serially instead of sending parallel.

These signals are serially transmitted through RF to the reception point. The decoder is used for decoding the serial data at the receiver and coverts as parallel data. RF communication mainly used for wireless data, voice transfer applications, and home automation applications, remote control applications, and industry oriented applications.

For example, in-home automation applications we can use RF controlled switches instead of conventional switches. For this purpose, an RF remote can be used for controlling lights and other devices without moving to other places.