IEEE Transactions on Terahertz Science and Technology最新文献_第9页

IEEE Transactions on Terahertz Science and Technology Publication Information IEEE太赫兹科学与技术学报出版信息

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IEEE Transactions on Terahertz Science and Technology Pub Date : 2026-02-03 DOI: 10.1109/TTHZ.2026.3655606

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IEEE Women in Engineering IEEE工程女性

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IEEE Transactions on Terahertz Science and Technology Pub Date : 2026-02-03 DOI: 10.1109/TTHZ.2026.3659968

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IEEE Microwave Theory and Techniques Society Information IEEE微波理论与技术学会信息

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IEEE Transactions on Terahertz Science and Technology Pub Date : 2026-02-03 DOI: 10.1109/TTHZ.2026.3655602

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In Memoriam of Jeffrey L. Hesler 纪念杰弗里·赫斯勒

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2026-02-03 DOI: 10.1109/TTHZ.2026.3654821

Thomas W. Crowe;Stephen H. Jones;Jan Stake;Imran Mehdi;Nuria Llombart

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IEEE Transactions on Terahertz Science and Technology Information for Authors IEEE太赫兹科技信息汇刊

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2026-02-03 DOI: 10.1109/TTHZ.2026.3655604

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IEEE Microwave Theory and Techniques Society Information IEEE微波理论与技术学会信息

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-12-19 DOI: 10.1109/TTHZ.2025.3642663

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IEEE Transactions on Terahertz Science and Technology Publication Information IEEE太赫兹科学与技术学报出版信息

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-12-19 DOI: 10.1109/TTHZ.2025.3642685

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IEEE Transactions on Terahertz Science and Technology Information for Authors IEEE太赫兹科技信息汇刊

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-12-19 DOI: 10.1109/TTHZ.2025.3642687

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Detection of Concealed Objects in Blurred Terahertz Images Based on Boundary Information Enhancement 基于边界信息增强的太赫兹模糊图像中隐藏目标检测

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-11-14 DOI: 10.1109/TTHZ.2025.3633052

Yuying Jiang;Qingcheng Sun;Hao Chen;Hongyi Ge;Yuan Zhang;Xixi Wen;Mengdie Jiang;Yang Zhao

{"title":"Detection of Concealed Objects in Blurred Terahertz Images Based on Boundary Information Enhancement","authors":"Yuying Jiang;Qingcheng Sun;Hao Chen;Hongyi Ge;Yuan Zhang;Xixi Wen;Mengdie Jiang;Yang Zhao","doi":"10.1109/TTHZ.2025.3633052","DOIUrl":"https://doi.org/10.1109/TTHZ.2025.3633052","url":null,"abstract":"Security screening is a crucial method for preventing violent terrorist attacks and potential contraband threats at transportation hubs. Terahertz (THz) imaging technology, as an emerging detection technique, offers a new solution for public security screening due to its nondestructive penetration, low photon energy, and molecular fingerprinting capabilities. In this article, knives of different shapes made of metal, ceramic, and plastic are used as concealed objects, and materials such as multilayer cardboard, polyethylene bubble wrap, foam boxes, and textiles served as covering layers. A dataset of THz images containing concealed objects with mixed occlusion layers is constructed. After analyzing the THz dataset, we propose a you only look once (YOLO) detection model based on boundary information enhancement (BIE-YOLO). This model introduces omni-dimensional dynamic convolution into the backbone network to enhance the feature extraction capability. A BIE module is added to capture detailed boundary information from the shallow layers of the backbone network, mitigating missed or false detections caused by blurred boundaries in THz images. Moreover, to improve detection accuracy for objects with similar contours, a BiFormer is used in the network neck to model global information and capture long-range dependencies. Experimental results demonstrate that the BIE-YOLO model achieves <italic>F</i>1 score, mAP50:95, and mAP50 of 79.2%, 79.9%, and 93.8%, respectively, representing improvements of 3.0%, 2.2%, and 1.5% compared to the baseline model YOLOv8. This model effectively detects concealed objects under multilayer occlusions, providing new insights and directions for applying THz technology in security screening.","PeriodicalId":13258,"journal":{"name":"IEEE Transactions on Terahertz Science and Technology","volume":"16 3","pages":"234-246"},"PeriodicalIF":3.9,"publicationDate":"2025-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146216625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Radial Probe for Waveguide-to-Microstrip Transition at 265–325 GHz With a Reflective Back Wall 带反射后壁的265-325 GHz波导微带跃迁径向探头

IF 3.9 2区工程技术

IEEE Transactions on Terahertz Science and Technology Pub Date : 2025-11-07 DOI: 10.1109/TTHZ.2025.3627687

Sooyeon Kim;Seung Hwan Kim;Dong Woo Park;Sang-Rok Moon;Eui-Su Lee;Minkyu Sung;Wonkyong Lee;Seung-Hyun Cho

{"title":"Radial Probe for Waveguide-to-Microstrip Transition at 265–325 GHz With a Reflective Back Wall","authors":"Sooyeon Kim;Seung Hwan Kim;Dong Woo Park;Sang-Rok Moon;Eui-Su Lee;Minkyu Sung;Wonkyong Lee;Seung-Hyun Cho","doi":"10.1109/TTHZ.2025.3627687","DOIUrl":"https://doi.org/10.1109/TTHZ.2025.3627687","url":null,"abstract":"To address the structural resonances and impedance mismatch commonly observed in waveguide-to-chip transitions, a radial probe-based structure optimized for wideband and low-loss performance in high-frequency systems is proposed. Impedance matching was improved by incorporating a reflective back wall (RBW), which effectively controlled the resonant behavior of a waveguide-to-microstrip transition. In addition, the dimensions of the enclosure of the radial probe were optimized to improve return loss. A waveguide taper was introduced to compensate for dimensional mismatch with a standard rectangular waveguide, thereby ensuring accurate impedance matching. An equivalent circuit model was developed to provide insight into the electromagnetic behavior of the proposed transition. The prototype was fabricated and mounted on a CNC-machined aluminum split block. The experimental results revealed a bandwidth of 265–325 GHz, with a minimum insertion loss of 0.6 dB and a return loss of more than 15 dB. This confirmed the proposed single-ended waveguide-to-microstrip transition, which incorporated the RBW and the optimized enclosure dimensions to achieve wide bandwidth, low insertion loss, and high return loss. The proposed transition offers a practical solution for wideband, low-loss interconnections in high-frequency systems and can be extended to other waveguide-to-chip configurations.","PeriodicalId":13258,"journal":{"name":"IEEE Transactions on Terahertz Science and Technology","volume":"16 3","pages":"331-341"},"PeriodicalIF":3.9,"publicationDate":"2025-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146216637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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