Nonreciprocal Antennas based on Time-Modulation: Challenges and opportunities

Alejandro Alvarez-Melcon, J. Sebastian Gomez-Diaz

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

Abstract

We explore nonreciprocal antennas based on combining time-modulated resonators with high-Q structures. Upon an adequate low-frequency modulation scheme, such configuration enables very efficient frequency conversion between only two frequencies (one related to guided signals and another to waves in free-space) and empowers nonreciprocal phase control of the generated waves through the photonic Aharonov-Bohm effect. This approach is applied to demonstrate nonreciprocal and reconfigurable antenna configurations, including reflectarray antennas and phased arrays able to independently control transmission and reception radiation patterns at the same operation frequency. Measured results confirmed losses below 4dB and isolation levels over 40dB between transmission and reception at desired, tunable directions in space. We discuss the exciting functionalities and benefits enabled by this technology and provide a critical assessment of challenges that remain to be addressed in real-life applications. We envision that this paradigm will pave the way to a magnetic-free, fully integrated, and CMOS-compatible technology with profound implications in communication and wireless systems, sensing, imaging, and on-chip networks.

Original languageEnglish (US)
Title of host publication14th European Conference on Antennas and Propagation, EuCAP 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9788831299008
DOIs
StatePublished - Mar 2020
Event14th European Conference on Antennas and Propagation, EuCAP 2020 - Copenhagen, Denmark
Duration: Mar 15 2020Mar 20 2020

Publication series

Name14th European Conference on Antennas and Propagation, EuCAP 2020

Conference

Conference14th European Conference on Antennas and Propagation, EuCAP 2020
CountryDenmark
CityCopenhagen
Period3/15/203/20/20

Keywords

  • Nonreciprocity
  • phasedarray antennas
  • reflectarray antennas
  • time-modulation

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing
  • Instrumentation
  • Radiation

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