The new circulator has the potential to double the useful bandwidth in wireless communications
Researchers at the Cockrell School of Engineering at The University of Texas at Austin have achieved a milestone in modern wireless and cellular telecommunications, creating a radically smaller, more efficient radio wave circulator that could be used in cellphones and other wireless devices, as reported in the latest issue of Nature Physics.
The new circulator has the potential to double the useful bandwidth in wireless communications by enabling full-duplex functionality, meaning devices can transmit and receive signals on the same frequency band at the same time.
The key innovation is the creation of a magnetic-free radio wave circulator.
Since the advent of wireless technology 60 years ago, magnetic-based circulators have been in principle able to provide two-way communications on the same frequency channel, but they are not widely adopted because of the large size, weight and cost associated with using magnets and magnetic materials.
Freed from a reliance on magnetic effects, the new circulator has a much smaller footprint while also using less expensive and more common materials. These cost and size efficiencies could lead to the integration of circulators within cellphones and other microelectronic systems, resulting in substantially faster downloads, fewer dropped calls and significantly clearer communications.
The team of researchers, led by Associate Professor Andrea Alu, has developed a prototype circulator that is 2 centimeters in size — more than 75 times smaller than the wavelength of operation. The circulator may be further scaled down to as small as a few microns, according to the researchers. The design is based on materials widely used in integrated circuits such as gold, copper and silicon, making it easier to integrate in the circuit boards of modern communication devices.
“We are changing the paradigm with which isolation and two-way transmission on the same frequency channel can be achieved. We have built a circulator that does not need magnets or magnetic materials,” Alu said.
The researchers’ device works by mimicking the way magnetic materials break the symmetry in wave transmission between two points in space, a critical function that allows magnetic circulators to selectively route radio waves. With the new circulator, the researchers accomplish the same effect, but they replaced the magnetic bias with a traveling wave spinning around the device.
Another unique feature is that the new circulator can be tuned in real time over a broad range of frequencies, a major advantage over conventional circulators.
“With this technology, we can incorporate tunable nonreciprocal components in mobile platforms,” said Nicholas Estep, lead researcher and a doctoral student in the Department of Electrical and Computer Engineering. “In doing so, we may pave the way to simultaneous two-way communication in the same frequency band, which can free up chunks of bandwidth for more effective use.”
For telecommunications companies, which pay for licenses to use frequencies allotted by the U.S. Federal Communications Commission, a more efficient use of the limited available bandwidth means significant cost advantages.
Additionally, because the design of the circulator is scalable and capable of circuit integration, it can potentially be placed in wireless devices.
“We envision micron-sized circulators embedded in cellphone technology. When you consider cellphone traffic during high demand events such as a football game or a concert, there are enormous implications opened by our technology, including fewer dropped calls and clearer communications,” Estep said.
The Latest on: Wireless communications
via Google News
The Latest on: Wireless communications
- Score these Sony wireless headphones for 39% less at Walmarton September 6, 2019 at 1:30 pm
Get these bass-y wireless headphones for only $78 ... there’s no cord to untangle or limit your movement. The built-in near-field communication (NFC) and Bluetooth technologies remove the need for ...
- Verizon Communications Inc.: Verizon Response: Hurricane Dorianon September 6, 2019 at 1:03 pm
If you need to work nearby one of these cables, please call 811 for site coordination to ensure the communications are available for ... First responder customers with wireless priority service should ...
- U.S. Cellular Brings Fairness To Wirelesson September 6, 2019 at 6:06 am
Mass TV, print, radio and digital featuring fairness communications will run throughout ... invest in technology and make enhancements to its wireless network to create a faster, better data ...
- 2019 Innovations in Information Technology, Computing, and Communications - ResearchAndMarkets.comon September 6, 2019 at 2:20 am
ITCC TOE's mission is to investigate emerging wireless communication and computing technology areas including 3G, 4G, Wi-Fi, Bluetooth, Big Data, cloud computing, augmented reality, virtual reality, ...
- Researchers show atoms can receive common communications signalson September 5, 2019 at 12:39 pm
A 19.6 gigahertz transmission frequency was chosen because it was convenient for the experiment, but it also could be used in future wireless communications systems, Holloway said. Wireless ...
- Council OKs new wireless array on poleson September 5, 2019 at 12:22 pm
Under the federal 1996 Telecommunications Act, municipalities can’t block service providers like Verizon from installing new wireless communications equipment, if that infrastructure is needed ...
- PAR Technology Corporation to Acquire 3M’s Drive Thru Communications Systems Businesson September 5, 2019 at 11:36 am
3M is a technology leader in drive thru communications for restaurants with a comprehensive offering of wireless headsets for order taking in the drive thru that includes the XT-1 and G5 headset ...
- Altice debuts $20 wireless service for its cable customerson September 5, 2019 at 11:09 am
Altice’s larger peers, Comcast Corp. and Charter Communications Inc., have already launched their own wireless offerings by reselling Verizon Communications Inc.’s service. Those companies charge $45 ...
- Mobile Communications America Acquires Allcomm Wirelesson September 5, 2019 at 5:45 am
SPARTANBURG, S.C., Sept. 5, 2019 /PRNewswire/ -- Mobile Communications America, Inc. (MCA), one of the largest Motorola Solutions channel partners and a leading provider of technology solutions and ...
- Sennheiser makes its Momentum Wireless headphones smarter and more affordableon September 5, 2019 at 1:00 am
It’s the ability to momentarily bring the outside world in, instead of shutting it out, and it’s a good idea for both ease of communication and safety. The new Momentum Wireless is available in black ...
via Bing News