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Current issue

ELEKTRO 2/2019 was released on February 13th 2019. Its digital version will be available on March 11th 2019.

Topic: Electrical appliances – switching, protective, signalling and special

Main Article
Advanced power converter topology
Smart Cities (part 7)

SVĚTLO (Light) 1/2019 was released on February 4th 2019. Its digital version will be available on March 5th 2019.

Fairs and exhibitions
Invitation at LIGHT IN ARCHITECTURE exhibition
Prolight + Sound 2019: keep up with time
The light at For Arch 2018 fair

Public lighting
Lights of towns and communities 2018 – the meeting at the round table

UW engineers achieve Wi-Fi at 10,000 times lower power

24.02.2016 | University of Washington | www.washington.edu

A team of University of Washington computer scientists and electrical engineers has demonstrated that it’s possible to generate Wi-Fi transmissions using 10,000 times less power than conventional methods.

The new Passive Wi-Fi system also consumes 1,000 times less power than existing energy-efficient wireless communication platforms, such as Bluetooth Low Energy and Zigbee.

Passive Wi-Fi can for the first time transmit Wi-Fi signals at bit rates of up to 11 megabits per second that can be decoded on any of the billions of devices with Wi-Fi connectivity. These speeds are lower than the maximum Wi-Fi speeds but 11 times higher than Bluetooth.

New Passive Wi-Fi

Aside from saving battery life on today’s devices, wireless communication that uses almost no power will help enable an “Internet of Things” reality where household devices and wearable sensors can communicate using Wi-Fi without worrying about power.

An array of sensors produces Wi-Fi packets of information using very little power by simply reflecting and absorbing that signal using a digital switch. In real-world conditions on the UW campus, the team found the passive Wi-Fi sensors and a smartphone can communicate even at distances of 100 feet between them.

Read more at University of Washington

Image Credit: University of Washington

-jk-