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SQU gets patent for mobile charging system

A mobile, multi-element wireless charging system for mobile phones and other electronic devices developed in Sultan Qaboos University has been granted a patent.

This makes it the varsity’s fourth patent registered in the US Patent Office.

The device was developed by Mohammed M Bait Suwailam, assistant professor in the department electrical and computer engineering at the varsity College of Engineering, according to a statement.

In this device, the transmitting module powers up from a DC battery, thus eliminates the use of AC power adapters, which needs the system to be connected through cables to the main outlet supply.

The cables do sometimes give rise to possible electromagnetic interference issues as they may give rise to radiation depending on their size and operating frequency.

This device supports the use of small solar panels that could also be employed to harvest solar energy and then to be used as electrical energy supply.

Bait Suwailam said the transmitter deploys a built-in oscillator circuitry to generate an AC signal from the DC power supply. It is capable of charging two mobile devices simultaneously and wirelessly. “Each receiving module is equipped with a similar coil as deployed in the transmitting module. A USB adapter is used at the output of each receiving module for ease of connection to charge the batteries of the two mobile phones.”

“The system is able to detect when a mobile phone needs to be charged or not, and that is accomplished through the use of standard communication protocols. A switch has also been integrated with the system as a back-up mechanism to initiate mobile devices whenever it needs to be charged,” he said.