Towards a reconfigurable metacavity antenna for computational imaging and DoA estimation

Mengran Zhao, Luyi Wang, Shitao Zhu, Muhammad Ali Babar Abbasi, Thomas Fromenteze, Okan Yurduseven

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

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Abstract

In this paper, a reconfigurable metacavity antenna (RMA) that can be used for microwave computational imaging (CI) and direction of arrival (DoA) estimation applications is proposed. The RMA is an electrically over-sized metacavity with its back wall replaced by a 1-bit reconfigurable metasurface and its top surface etched with leaky circular irises. By leveraging the frequency-diversity and the dynamic aperture techniques, spatiotemporally low-correlated radiation patterns can be generated by the RMA at different operating frequencies and under different PIN states. The reflection coefficients at operating frequencies are under -10 dB, indicating the RMA is impedance-matched. The correlation coefficients are smaller than 0.3 and the singular values are close to each other, which demonstrates the spatialorthogonality of the measurement modes. Simulated experiments are implemented to validate the feasibility of the proposed RMA for CI and DoA estimation. Using the developed RMA, the target image has been reconstructed and the far-field source has been estimated. The proposed design is validated through simulations in CST Microwave Studio.
Original languageEnglish
Title of host publication2024 IEEE European Conference on Antennas and Propagation (EuCAP): proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9788831299091
ISBN (Print)9798350394436
DOIs
Publication statusPublished - 26 Apr 2024
Event18th European Conference on Antennas and Propagation 2024 - Glasgow, United Kingdom
Duration: 17 Mar 202422 Mar 2024
https://www.eucap2024.org/

Publication series

NameEuropean Conference on Antennas and Propagation (EUCAP): proceedings
ISSN (Print)2164-3342

Conference

Conference18th European Conference on Antennas and Propagation 2024
Abbreviated titleEuCAP 2024
Country/TerritoryUnited Kingdom
CityGlasgow
Period17/03/202422/03/2024
Internet address

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