ARLA/CLUSTER: Novos circuitos integradas de alta frequência capazes de transmitir 10 GB da dados por segundo desenvolvidos na Universidade da California

[João Costa > CT1FBF]

High-frequency chip brings researchers closer to next generation technology

A novel, high-frequency electronic chip potentially capable of transmitting
tens of gigabits of data per second—a rate that is orders of magnitude
above the fastest internet speeds available today—has been developed by
engineers at the University of California, Davis.

*Omeed Momeni*, an assistant professor of electrical and computer
engineering at UC Davis, and doctoral student *Hossein Jalili* designed the
chip using a phased array antenna system. Phased array systems funnel the
energy from multiple sources into a single beam that can be narrowly
steered and directed to a specific location.

"Phased arrays are pretty difficult to create, especially at higher
frequencies," Momeni said. "We are the first to achieve this much bandwidth
at this frequency."

The chip prototyped by Momeni and Jalili successfully operates at 370 GHz
with 52 GHz of bandwidth. For comparison, FM radio waves broadcast between
87.5 and 108 MHz; 4G and LTE cellular networks generally function between
800 MHz and 2.6 GHz with up to 20 MHz of bandwidth.

Most modern electronics are designed to operate at lower frequencies.
However, the growing demand for faster communication, and new and emerging
applications of sensing and imaging are driving the creation of
technologies that function at higher frequencies.

*Reaching speed limit of 4G networks*

"Theoretically, 4G cellular networks have reached their data rate limit,"
Momeni said. "As we continue to migrate to systems like cloud computing and
next generation cellular networks, the need for speed is growing. Higher
frequencies mean more bandwidth and more bandwidth means higher data rate."

The tiny piece of hardware designed by Momeni and Jalili is evidence that
it is possible to harness the large available bandwidth at millimeter-wave
and terahertz bands on a single, compact chip. This is an important step
toward the development of scalable systems that can be used to sharpen
technologies like spectroscopy, sensing, radar, medical imaging and
high-speed communication.

In future work, Momeni plans to integrate the chip into imaging and
communication systems.

The research was supported by a five-year National Science Foundation
CAREER grant awarded to Momeni. The ongoing project is titled "Scalable
Traveling and Standing Wave Structures for High-Power and High-Efficiency
Terahertz and mm-Wave Radiator and Phased Array Systems."

Read more at:
https://phys.org/news/2017-08-high-frequency-chip-closer-technology.html#jCp

*•* Our thanks to *Stephen, G7VFY* for spotting this item
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