Passive WiFi  What is it? + In what improvement to the conventional one? ▷ 2020

If we start to analyze that Wi-Fi connection is one of the applications that consumes the most battery of mobile devices, we will realize that the cost of electrical energy that we need to charge these batteries is too high.

Let’s imagine the electricity consumption that all the people who are in Spain or Europe need and need to charge their mobile phones daily. We will realize the importance of being able to reduce these expenses, not only for the economic part but also for the preservation of the environment.

Fortunately The “Passive WiFi” technology was born a short time ago with which you can drastically reduce energy consumption. We will show you what this type of technology consists of, what its advantages are and in what time it can be working 100%.

What is passive Wi-Fi and who developed this wireless technology?

What is passive WiFi and who developed this wireless technology?

Indian engineer Vamsi Talla is the chief investigator of the University of Washington, located in the North American city of Seattle. These scientists have been studying for 4 years how to significantly reduce the energy consumption that occurs when we connect our devices to WiFi network.

For it created Passive WiFi technology With which you can reduce up to ten thousand times the energy consumption with respect to the wireless connections that exist today.

This engineer founded the Jeeva Wireless company which is dedicated to the sale of this technology for the different suppliers of articles that we use daily, from a mobile phone to a coffee maker.

Let us bear in mind that the trend of “Internet of things” (IoT) is getting bigger and closer than ever. Let’s remember that IoT is the technology of applying WiFi sensors to as many objects as possible that exist in a home or in a company.

How does Passive WiFi work? Differences with the conventional

How does Passive WiFi work?  Differences with the conventional

Traditional WiFi works with two devices that need to connect through 2 kinds of wave, a digital one (the one that transmits the data) and an analog radio (which is responsible for transporting that data).

One of the devices receives the Internet signal through a cable, translates it and sends it, thanks to an antenna, by radio waves to the second device, which decodes the signal and translates it.

It also works in reverse when the second device sends radio wave signals to the wireless router and it sends information to the Internet. For these two devices to work, a transmitter and a baseband chip are required.

For passive WiFi, it was possible to separate the radio waves, making it necessary for only one of the devices to send the signals through the placement of passive sensors.

That is why only one of the devices is required to have a baseband chip and an antenna. This considerably reduces energy consumption.

In other words, a passive chip must be installed in a mobile phone, for example, and this will connect with the router that has special software installed for this case. Everything else works in the same way as traditional WiFi because the data transmission is done digitally.

How fast can these types of wireless connections be?

How fast can these types of wireless connections be?

It is calculated that if we connect to a passive WiFi network we can obtain a speed a little higher than 11 Mbps, which is much lower than that of a traditional WiFi network.

While it is true that it is approximately 10 times faster than Bluetooth, it is still a point to consider to improve this technology.

What are the main advantages and disadvantages of this new wireless connection?

Like all new technology, it presents its own benefits and also disadvantages that must be analyzed and perfected in the future. Next, we will present what we consider important for our criteria:


We will mention the following points or aspects as advantages:

  • Efficiency: is one of the strengths of this new technology. With it we can considerably reduce energy consumption.
  • Environmental care: By reducing electricity consumption we are also helping our environment not only to produce energy but also to recycle batteries and other elements that we would no longer use.
  • Simple operation: No big changes are needed with current technology for passive WiFi to work, you just have to change the software of the routers and the chips so that they can connect to each other. That is, we will not need new facilities that are expensive or that take up a lot of space, we will simply be able to handle ourselves as we have been doing so far.


If we have to talk about disadvantages, we will name the following aspects, which although being a new technology can be perfected without any doubt.

They are:

  • Speed ​​is an aspect that needs to be improved, take out offers not half of what a traditional WiFi technology offers in speed.
  • It is not applicable to all places, although it is true it is a technology that is not more than 4 years old, it is not yet easily accessible, since it can be transmitted up to 30 meters maximum.
  • Application time, it will take some time to be able to have this class for the entire system “Internet of things”.

When can we have devices with support for this type of Internet connection via WiFi?

As we mentioned earlier, the company Jeeva Wireless, in charge of developing this technology and selling it to different product manufacturers to achieve IoT, reports that there are more and more people interested in applying this technology, but due to the limitations that currently presents its implementation is not as fast as expected.

Therefore, considering that the production cost is very low, around a dollar, it is estimated that in the next 2 or 3 years we can have this technology applied almost 100% in all our homes and workplaces.

If you have any questions, leave them in the comments, we will answer you as soon as possible, and it will surely be of great help to more members of the community. Thank you! 😉

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