Recently, U.S. scientists discovered a new data transmission technology that is expected to be used to develop ultrafast WiFi. Scientists successfully overcome technical obstacles by using "terahertz" radio waves to transmit data at speeds of up to 50GB per second. The typical wireless network has a maximum speed of 500MB per second, about 100 times faster.
At present, wireless networks transmit sound and data mainly in the microwave. The wavelength of the terahertz range from microwave to infrared. The high frequency of the terahertz band can carry more data and is used to cope with the increasing demand for WiFi Internet access.
In this experiment, researchers used high-definition television programs to transmit experiments. The results showed that when the terahertz system transmits data at a rate of 10GB per second, "zero error" is achieved and the error rate still increases even after speeding up to 50GB. The current communication network Correction system to solve. The application of voice or data transmission systems require multi-tasking (multiplexing) technology, multiple signals transmitted through the same channel. To do this, the researchers used two balanced pieces of metal as the waveguides. One of them had a slit in the middle. When the terahertz waves carrying the data passed through the wave guide, the angles at which they projected out of the slit would vary based on the frequency, To distinguish between different signals.
Terahertz (THz) is a new and uniquely unique source of radiation that is one of the fluctuating frequency units, also known as terahertz, or terahertz, equal to 1,000,000,000,000 Hz and is commonly used to indicate the frequency of electromagnetic waves.
Terahertz rays are ubiquitous in nature and have become effective clues and tools for people to understand nature. However, relative to other wave bands of electromagnetic waves such as infrared and microwave, people's understanding and application of it is very scarce. In communications, generally only for 10 GB / s wireless transmission, but also for satellite communications. In outer space, the state of approximately vacuum, regardless of the impact of moisture, the transmission speed of ultra-wideband technology faster than a few hundred to a thousand times. THz communications enable high-security satellite communications with extremely high bandwidth. However, due to the lack of efficient THz transmit antenna and source, it can not be commercialized in the field of communications. The success of the terahertz transmission experiment has laid the foundation for the future high-speed ultra-wideband transmission network.
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