Nanotech

A 5G network / Photo by: Alexander Supertramp via Shutterstock

 

State-of-the-art transceivers are needed for stable high-speed communications on the 5G network. Scientists at Tokyo Institute of Technology aimed at such devices by designing and fabricating a tiny yet fast transceiver for the next-generation network. This tiny transceiver could boost performances of future 5G devices.

Most transceivers available for 5G have RF phase shifters to transmit and receive communications. An accurate phase shifting is essential in order to point the antenna pattern towards a certain direction for the best network performance. Unfortunately, RF phase shifters do not offer the optimal performance for the 5G network, according to a new study.

Scientists at Tokyo Institute of Technology developed a 28-GHz transceiver in the new study. The small device employed a Local Oscillator phase shifter instead of multiple RF phase shifters. The new approach enabled the transceiver to accurately point the antenna towards the best direction, compared to previous transceiver designs.

The approach also solved one of the issues known in RF phase shifters -- calibration complexity. RF phase shifters have a complicated calibration process that requires careful adjustments so it can operate in a device properly. While the calibration is manageable in small transceivers, the process can become difficult to integrate into larger devices. 

The new transceiver with LO phase shifters has a measurement of 4 mm by 3 mm and was made using minimal components. The device has a gain variation of nearly zero over the entire range of 360 degrees, making it a potential alternative shifter in upcoming 5G devices. When the scientists tested its performance, the device was able to achieve about a 10 GB per second higher data rate than other phase shifting techniques, according to Phys.org.

If the performance and stability of the new transceiver are further proven in more testing, many devices under IoT ecosystems, such as autonomous vehicles, smartphones, and wearable devices, will be gain massive benefit in terms of connectivity.