Electromagnetic-Circuit Co-design approach towards Reconfigurable Terahertz Holographic CMOS Metasurface

S. Venkatesh, X. Lu, H. Saeidi, K. Sengupta

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this article, we design and demonstrate a multi-functional, digitally programmable metasurface at 0.3 THz exploiting electromagnetic-circuit co-design approach. The metasurface is fabricated using industry standard 65-nm CMOS process. Each metasurface tile consists of 12 times 12 periodic array of unit cells. We also demonstrate the scalability of this approach by chip tiling and create a larger aperture of 2 times 2 array. Each unit cell in the metasurface is an individually addressable and programmable multi-split-ring resonator consisting of eight metaloxide-semiconductor field-effect transistors (MOSFET) at the capacitive gaps. Each unit cell can be programmed to control both amplitude and phase independently. We experimentally demonstrate multi-functional applications namely, high-speed beam modulation with switching ON/OFF ratio of sim 25 dB at a maximum clock speed of 5 GHz, beamforming capability of ± 30° and spatial wavefront manipulation using binary-amplitude-only holography technique at 0.3 THz. The metasurface chip operates at near-zero DC power (240 mu text{W}) consumption.

Original languageEnglish (US)
Title of host publication2021 15th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages448-450
Number of pages3
ISBN (Electronic)9781728150185
DOIs
StatePublished - Sep 20 2021
Externally publishedYes
Event15th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2021 - Virtual, New York, United States
Duration: Sep 20 2021Sep 25 2021

Publication series

Name2021 15th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2021

Conference

Conference15th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2021
Country/TerritoryUnited States
CityVirtual, New York
Period9/20/219/25/21

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Atomic and Molecular Physics, and Optics
  • Radiation
  • Surfaces and Interfaces

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