Defocusing Recovery Technology of Terahertz Image Based on 3-D PSF Simulations

Cui, Zongyu; Ren, Jiaojiao; Li, Lijuan; Gu, Jian; Zhang, Jiyang

doi:10.1109/tim.2023.3291781

IEEE Trans. Instrum. Meas.

2023

DOI: 10.1109/tim.2023.3291781

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Defocusing Recovery Technology of Terahertz Image Based on 3-D PSF Simulations

Zongyu Cui,

Jiaojiao Ren,

Lijuan Li

et al.

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Cited by 6 publications

References 36 publications

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A high-performance compact WR-4 orthomode transducer for wideband communications

Zhang,

Yang,

Zhou

et al. 2024

J. Phys. D: Appl. Phys.

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This paper presents the design, fabrication and performance evaluation of a compact orthomode transducer (OMT) optimized for wideband communications. The OMT developed in this work features a circular waveguide as its common port, ensuring direct compatibility with receivers such as horn antennas, meanwhile enabling dual-polarization capabilities. The operational frequency spectrum of the OMT spans the entire WR-4 band (170 GHz-260 GHz), achieving reflection coefficients surpassing 20 dB and port isolation better than 60 dB, as validated through electromagnetic (EM) simulations. To evaluate performance of the fabricated OMT in a practical dual-polarization system, the OMT is utilized as the feed source for a horn antenna to realize a dual-polarized horn antenna system. The results demonstrate that the antenna incorporating the OMT exhibits superior performance, with average reflection coefficients better than 20 dB and port isolation exceeding 40 dB for overall operational band. These results indicate that the OMT developed in this work successfully meets the demanding requirements for polarization multiplexing in wideband dual-polarized receiver systems.

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A high-performance compact WR-4 orthomode transducer for wideband communications

Zhang,

Yang,

Zhou

et al. 2024

J. Phys. D: Appl. Phys.

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Terahertz Thickness Measurement Method for Thermal Barrier Coatings Based on Physical Constraints and Micro Variations

Cao,

Yu,

Fan

et al. 2024

IEEE Sensors J.

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Blind Focusing for Computational Microwave Imaging With Metasurface Aperture Based on Sparse Bayesian Learning

Fu,

Wang,

Dai

et al. 2024

IEEE Trans. Geosci. Remote Sensing

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Defocusing Recovery Technology of Terahertz Image Based on 3-D PSF Simulations

Cited by 6 publications

References 36 publications

A high-performance compact WR-4 orthomode transducer for wideband communications

A high-performance compact WR-4 orthomode transducer for wideband communications

Terahertz Thickness Measurement Method for Thermal Barrier Coatings Based on Physical Constraints and Micro Variations

Blind Focusing for Computational Microwave Imaging With Metasurface Aperture Based on Sparse Bayesian Learning

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