Engineers invent breakthrough millimeter-wave circulator IC: Researchers are first to demonstrate a circulator on a silicon chip at mm-wave frequencies that enables nonreciprocal transmission of waves
Columbia University School of Engineering and Applied Science
At the IEEE International Solid-State Circuits Conference in February, Krishnaswamy’s group unveiled a new device: the first magnet-free non-reciprocal circulator on a silicon chip that operates at millimeter-wave frequencies (frequencies near and above 30GHz). Following up on this work, in a paper published today in Nature Communications, the team demonstrated the physical principles behind the new device. Most devices are reciprocal: signals travel in the same manner in forward and reverse directions. Full-duplex communications, in which a transmitter and a receiver of a transceiver operate simultaneously on the same frequency channel, enables doubling of data capacity within existing bandwidth. The Columbia Engineering circulator could also be used to build millimeter-wave full-duplex wireless links for VR headsets, which currently rely on a wired connection or tether to the computing device.
Tags:
- Circulator
- Duplex (telecommunications)
- Integrated circuit
- Extremely high frequency
- Semiconductor
- Wireless
- Computing
- Communication
- Electronic engineering
- Computer science
- Telecommunications engineering
- Telecommunications
- Electricity
- Computer engineering
- Electrical engineering
- Information and communications technology
- Electronics
- Technology