Silicon-based microchip light fixtures record millimeter-wave signal strength

The University of California, Irvine's official website announced on the 8th of this month that researchers at the university had created a silicon-based microchip light emitter with an intensity record of G-band (110 Ghz to 300 Ghz) millimeter-wave transmitted. This frequency of light waves more easily penetrate the surface of objects such as humans and improve the resolution of scanning and imaging devices in medicine and security. The chip will also showcase key applications in the field of 5G wireless communications.

Laboratory tests show that the energy efficiency of chip light emitters broke the existing record, an order of magnitude higher than similar devices, while having a strong anti-interference ability. PAYAM HEIDER, a professor of electrical engineering and computer science at the University of California, Irvine, who led the research, will be presenting this latest research at the International Institute of Electrical and Electronics Engineers (IEEE) Solid State Circuits Conference this week.

This chip emitter has two major innovations in design: one is the integration of three important functions into a single device, which collects the energy of multiple amplifiers, tunes the signal to a preset frequency, and emits signals that can be used for detection or communication Signal, give up the traditional light-emitting devices within the low-level interstage system, greatly improving the energy output intensity; the other is the light-emitting semiconductor chip is designed to octagonal, unique cavity structure so that it can issue a circularly polarized signal to In the form of a micro-whirlwind, this shaped beam penetrates the solid and provides a very detailed, in-depth image. Most of the existing light-emitting device can only produce linear polarity signal, easy to cause polarization and make the signal weakened.

The researchers said the new device will show great potential in the biomedical field to isolate lumps from healthy tissue or to perform precise studies of individual proteins. In addition, millimeter-wave technology plays an important role in the ongoing development of 5G wireless standards, virtual appliances and sensors and antennas in a variety of instruments, buildings and other infrastructure, such as those used in driverless vehicles Intelligent processing system and radar device, can improve the accuracy of blind spot detection, to avoid crashes.

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