New technologies could one day help the Internet of Things
A few years ago, Aline Aid and Jimmy Hester were sitting in a restaurant sharing popcorn. However, they not only eat snacks, but also rack their brains on a tricky question: how to use the power of invisible signals to send data to mobile phones.
Phones, computers and other equipment? If they can handle it, one day people can power their electronic devices without batteries and cables. Through the exchange of opinions, this idea was formed. This idea has now become a reality. The core of his innovation is a special device.
Help collect radio signals from cell phone towers. The device is called a Roseman lens and looks a bit like a flat metal spider.”We are very excited. I know it will work,” Eid al-Fitr recalled. He is a PhD student in electrical engineering at the Georgia Institute of Technology in Atlanta. Hester is the co-founder of the technology company Atheraxon.
He is also in Atlanta. Eid shared this idea with his teacher Manos M. Tenzeris. “This is a revolutionary decision,” Tenzeris said. All three described their new equipment in the “Science Report” on January 12.
Wireless energy harvesting cannot work well over long distances. Electrical engineer Hina Tabassum is aware of this problem. He is also researching this issue at York University in Toronto, Canada. The telephone tower connects to our cell phones and other devices. The area covered by each tower is called a unit. Your phone communicates with the next data tower. The first cellular network used radio waves to send and receive data. Microwave frequency.
These waves can carry more data and transmit faster. Although this helps save energy, these waves will not travel that far.This is because buildings and other objects block them. It also absorbs moisture in the atmosphere and reduces its strength when traveling. Explanation: What are waves and wavelengths. When energy waves pass through mobile phones or other devices, they leave data and continue to have an impact. The energy used to transmit these data is now useless.
Tenzeris said this is a waste unless new equipment converts it into electricity. The use of this energy can span the entire electromagnetic spectrum. There is more power at low frequencies,” Eid said. Millimeter wave 5G technology is impressive because cell towers use more energy to radiate these high frequencies. Therefore, collective antennas can receive more power from these signals.A typical 5G tower emits microwave signals from about 180 meters (590 feet) away. In order to collect its energy at the edge of this distance, the receiving antenna must point in exactly the same direction as the direction the wave comes from. Please note that no matter which direction the receiver points, the 5G power harvester must be operated anywhere in the 5G cell. Eid and Hester thought about how to collect energy from such a long distance and so many different directions. 5G promises to save new energy for digital technology. You solved this problem with this Rotman lens. You have been there for a long time. But engineers only use them to send signals, not to receive signals. Tabassum said that using them as receivers is “a new technology.”
The lens looks a bit like a flat metal tarantula.But they collected enough information to simulate how the device works in the real world. They now report that the device can provide 6 microwatts of power at 180 meters. Tabassum fears that this estimate has been overstated. Buildings, trees, and people block the signal and limit the energy that can reach the device. Tenzeris said his team took this into consideration. The Georgia Institute of Technology team now plans to test the device at a greater distance.