The research team launched a new terahertz detector that enables fast wireless data communication and high sensitivity radar with frequency bands that were before difficult to work with. now the new trick to tame terahertz broadcasts.
Their approach combines sensitive electronics and a new high-frequency method to achieve the long-awaited goal of using terahertz radiation to send and receive wireless data.
The recordset of 30 gigabytes per second for error-free real-time transmission is a breakthrough for next-generation cellular network technology (6G).
Wireless data is very popular. Mobile phones not only need high-speed video streaming when traveling, but some rural people only rely on wireless networks for home broadband. Electromagnetic waves from terahertz radiation at frequencies around 1012 cycles per second have long tempted scientists and cell phone manufacturers into temptation.
The high frequency of terahertz radiation will allow more data to transmitted per second compared to the current standard of around 800 MHz. But, practical terahertz recipients remain difficult to understand for two main reasons.
First, electromagnetic oscillations are too fast to overcome conventional electronics, and terahertz oscillators and detectors have low efficiency. Second, the thermal noise from the room temperature detector obscures the signal received above.
Now researchers at Osaka University have found a new receiver that not only overcomes these obstacles but also sets a record for the fastest real-time transmission speed without errors. They use special electronic components called resonant tunnel diodes. Unlike normal electronics, where resonant tunnel diode currents always increase at higher voltages, there are special resonant voltages that provide peak currents.
So there is an area where current drops with increasing voltage. This nonlinear behavior allows scientists to synchronize terahertz signals that received with an internal electronic oscillator in the device and then separate the data from the carrier wave. In the end, sensitivity increases by a factor of 10,000. Among all electronic-based systems, our system achieves the highest speed of wireless data for wireless transmission, the researchers said.
Cell phone towers aren’t the only places where you can find terahertz radiation in the future. This technology can be used as an adjunct to the next generation of 6G wireless communication in various applications.
This includes spectroscopic examinations, nondestructive testing, and high-resolution radar.