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Up to 60% of a smartphone’s energy consumption can come from Wi-Fi use. Wi-Fi uses energy when it is not connected to a network because it is constantly looking for a signal. Backscattering is used to communicate, reflecting radio waves from a different device. Similar to contactless RFID chip cards, the new method does not require a special device to read the signal, unlike those cards.
It successfully separated the digital and analog radio signals. Power-intensive functions, like producing a signal at a particular frequency, are delegated to a single grid-connected network device. This signal is altered and reflected by smartphones to communicate with the router.
At 11 megabits per second, prototype passive devices transmitted data through walls as far as 100 feet. Compared to conventional Wi-Fi devices, the system used tens of microwatts less power and one thousandth the energy of Bluetooth LE and Zigbee communications standards.
The Global Passive Wi-Fi market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
Passive Wi-Fi inventors are interviewed by Bliley Tech. Starting with the internet of things (IoT) or industrial internet, passive WiFi is a remarkable innovation that has the potential to transform wireless communications. WiFi communication will soon be 10,000 times more energy efficient thanks to this.
By decoupling the analog and digital components of a typical Wi-Fi radio, a novel approach to the ubiquitous Wi-Fi standard has allowed us to significantly reduce power consumption by several orders of magnitude. This is known as passive Wi-Fi.
While the connected wifi devices on the network are able to operate solely in the digital domain, a single plugged-in device like a Wifi router handles the analog portion for the entire network.
The connected devices can then produce wi-fi signals by reflecting the router’s RF energy. We are able to demonstrate wi-fi at a fraction of the typical RF power consumption by replacing the analog component with a straightforward switch that can connect or disconnect the antenna and cause RF reflections.
The problem with WiFi and conventional radios is that they use a lot of power. The primary reason for this is that most radios incorporate both digital and analog components. The digital component’s power consumption has become extremely efficient as a result of Moore’s Law. It is now possible to perform base-band digital processing using tens of microwatts.
