NanoSemi Closes the Wi-Fi Gap

The Wall Street Journal recently ran an article on the sticky Wi-Fi problem.  Your mobile phone will not stay connected to the hot spot (also known as an access point) as you move away from it.  What causes this? Your mobile phone does not put out enough power to reach the access point but the access point can reach your mobile phone.  In other words, the link is not closed resulting in half a link. Unlike “half a loaf” of bread which you can still eat, the half a link means that the communication is broken. As stated in the article: “our phones are in a bind: They can “see” the Wi-Fi beacon but they don’t have the oomph to communicate with it”

Power amplifiers are used in mobile phones to amplify the signals emanating from them. They must put out enough power to close the link as described above.  However, unlike the power amplifies used in access points or hot spots, they must run on batteries, which means they also need to run efficiently. Achieving both higher power output and higher power efficiency are typically at odds which means that power output is typically sacrificed.

The NanoSemi LinearizerTM uses machine learning and advanced algorithms to modify signals being fed into a power amplifier to enable higher power output and efficiency.  Without a linearizer like NanoSemi’s, amplifiers must be backed down in order to achieve the signal quality required of Wi-Fi specifications. With the linearizer, the amplifier can operate at its sweet spot with greater output while still meeting the Wi-Fi specifications. As a result, higher data rates are achieved at any given range and the improved PA efficiency results in lower power consumption and longer battery life.

The results are illustrated in the chart below:

For more on this topic, please see our web site https://www.nanosemitech.com/wi-fi/