Enhanced Bandwidth and Continuous Phase Modulation in a Novel Varactor-Based RIS Design

Yikun Li, Yufei Zhao, Chau Yuen, Yong Liang Guan, Zhongxiang Shen

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

Abstract

We present a reflective type programmable Reconfigurable Intelligent Surface (RIS) by applying a varactor, which enable us to modify the phase of reflective wave continuously while keep the S11 around -1 dB. The designed RIS works at 8.5 GHz and has four nearly quantized phase that covers a 270-degree range. The constructed array of this RIS has a working bandwidth of 400 MHz, from 8.3 GHz to 8.7 GHz. By program the constructed array, we achieve 45° abnormal reflection and generated vortex beam of mode l = +1. In the future, our work could be applied to more practical situation.

Original languageEnglish
Title of host publication2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting, AP-S/INC-USNC-URSI 2024 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages821-822
Number of pages2
ISBN (Electronic)9798350369908
DOIs
Publication statusPublished - 2024
Externally publishedYes
Event2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting, AP-S/INC-USNC-URSI 2024 - Florence, Italy
Duration: Jul 14 2024Jul 19 2024

Publication series

NameIEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
ISSN (Print)1522-3965

Conference

Conference2024 IEEE International Symposium on Antennas and Propagation and INC/USNCURSI Radio Science Meeting, AP-S/INC-USNC-URSI 2024
Country/TerritoryItaly
CityFlorence
Period7/14/247/19/24

Bibliographical note

Publisher Copyright:
© 2024 IEEE.

ASJC Scopus Subject Areas

  • Electrical and Electronic Engineering

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