Three-dimensional computational polarimetric imaging with a hyperuniform frequency-diverse metacavity transceiver

Zhao, M., Zhu, S., Chen, X., Fromenteze, T., Abbasi, Q. H. , Alomainy, A., Fusco, V. and Yurduseven, O. (2024) Three-dimensional computational polarimetric imaging with a hyperuniform frequency-diverse metacavity transceiver. IEEE Transactions on Instrumentation and Measurement, 73, 8002511. (doi: 10.1109/TIM.2024.3375963)

Abstract

Polarimetric information is beneficial for enhancing the imaging quality of computational imaging (CI) systems. However, the hardware that can extract the polarimetric information in a computational polarimetric imaging (CPI) system remains heavily unstudied. Thus, in this article, a hyperuniform frequency-diverse metacavity transceiver (HFDMT) that is capable of retrieving the polarimetric information throughout the K-band is proposed. The proposed HFDMT is a metacavity etched with cross-shaped irises arranged in a hyperuniform distribution. The transmitter (Tx) and the receiver (Rx) of a conventional CPI system are replaced by two isolated ports of the HFDMT, which significantly simplifies the hardware architecture. First, to satisfy the requirements for extracting the polarimetric information while sustaining the high efficiency and frequency diversity, the cross-shaped iris is proposed. The cross-shaped iris working efficiently and independently under two orthogonal polarizations also exhibits frequency-diverse radiation responses. Moreover, to improve the spatial-orthogonality of the measurement modes, the hyperuniform distribution is adopted to arrange the irises. Using the hyperuniform distribution results in up to 33% increase in the number of useful measurement modes under different signal-to-noise ratios (SNRs), as compared to the uniform distribution. Then, the performance of the HFDMT is evaluated. The S-parameters demonstrate that the HFDMT exhibits good impedance match and high port isolation characteristics. In total, 600 measurement modes with correlation coefficients (CCs) lower than 0.35 are obtained from 18 to 26 GHz. Finally, a prototype is fabricated. The 3-D CPI feasibility using the proposed HFDMT is verified by both full-wave simulations and measurements.

• Item Type: Articles
• Additional Information: This work was supported by the National Key R& D Program of China under Grant 2022YFB3902400, the Natural Science Foundation of China under Grant 62071371 and the Leverhulme Trust under Research Leadership Award under Grant RL-2019-019.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Abbasi, Professor Qammer
• Authors: Zhao, M., Zhu, S., Chen, X., Fromenteze, T., Abbasi, Q. H., Alomainy, A., Fusco, V., and Yurduseven, O.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: IEEE Transactions on Instrumentation and Measurement
• Publisher: IEEE
• ISSN: 0018-9456
• ISSN (Online): 1557-9662
• Copyright Holders: Copyright © 2024 IEEE
• First Published: First published in IEEE Transactions on Instrumentation and Measurement 73:8002511
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher