Pub Date : 2024-10-29DOI: 10.1109/TAP.2024.3475055
{"title":"IEEE Transactions on Antennas and Propagation Publication Information","authors":"","doi":"10.1109/TAP.2024.3475055","DOIUrl":"https://doi.org/10.1109/TAP.2024.3475055","url":null,"abstract":"","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"C2-C2"},"PeriodicalIF":4.6,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10737910","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-29DOI: 10.1109/TAP.2024.3475059
{"title":"Institutional Listings","authors":"","doi":"10.1109/TAP.2024.3475059","DOIUrl":"https://doi.org/10.1109/TAP.2024.3475059","url":null,"abstract":"","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"C4-C4"},"PeriodicalIF":4.6,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10737907","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-29DOI: 10.1109/TAP.2024.3475057
{"title":"IEEE Transactions on Antennas and Propagation Information for Authors","authors":"","doi":"10.1109/TAP.2024.3475057","DOIUrl":"https://doi.org/10.1109/TAP.2024.3475057","url":null,"abstract":"","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"C3-C3"},"PeriodicalIF":4.6,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10737916","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-07DOI: 10.1109/TAP.2024.3463920
{"title":"IEEE Transactions on Antennas and Propagation Publication Information","authors":"","doi":"10.1109/TAP.2024.3463920","DOIUrl":"https://doi.org/10.1109/TAP.2024.3463920","url":null,"abstract":"","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 10","pages":"C2-C2"},"PeriodicalIF":4.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10707014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-07DOI: 10.1109/TAP.2024.3463916
{"title":"Institutional Listings","authors":"","doi":"10.1109/TAP.2024.3463916","DOIUrl":"https://doi.org/10.1109/TAP.2024.3463916","url":null,"abstract":"","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 10","pages":"C4-C4"},"PeriodicalIF":4.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10706992","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142408832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-07DOI: 10.1109/TAP.2024.3463918
{"title":"IEEE Transactions on Antennas and Propagation Information for Authors","authors":"","doi":"10.1109/TAP.2024.3463918","DOIUrl":"https://doi.org/10.1109/TAP.2024.3463918","url":null,"abstract":"","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 10","pages":"C3-C3"},"PeriodicalIF":4.6,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10707023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142408771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A highly isolated dual-band full-duplex antenna subsystem operating at 8–18 GHz (X-/Ku-band) and 32–40 GHz (Ka-band) is presented. Each band includes two conical horn antennas which are juxtaposed side-by-side. Dual circular polarization (CP) is generated by using a 3 dB coupler in the lower band and a septum polarizer in the upper band. The two pairs of horns are embedded within and alongside a metallic cylinder with an edge-to-edge distance of 240 mm for the X-/Ku-band and 75 mm for the Ka-band. In order to increase the Tx-Rx isolation, three sets of annular corrugations are etched on the side wall of the cylindrical cavity and conformal absorbers are added around the horns in X-/Ku-band. A prototype antenna system is fabricated and measured. The measured Tx-Rx isolation is greater than 80.9 dB in the X-/Ku-band and 71.6 dB in the Ka-band. The measured gain in the two bands is higher than 14.3, and 20.1 dBiC, respectively.
{"title":"A Full-Duplex Dual Wideband Horn Antenna With High Port-to-Port Isolation","authors":"Yulin Tao;Changjiang Deng;Xiaowei Cao;Kamal Sarabandi","doi":"10.1109/TAP.2024.3467693","DOIUrl":"https://doi.org/10.1109/TAP.2024.3467693","url":null,"abstract":"A highly isolated dual-band full-duplex antenna subsystem operating at 8–18 GHz (X-/Ku-band) and 32–40 GHz (Ka-band) is presented. Each band includes two conical horn antennas which are juxtaposed side-by-side. Dual circular polarization (CP) is generated by using a 3 dB coupler in the lower band and a septum polarizer in the upper band. The two pairs of horns are embedded within and alongside a metallic cylinder with an edge-to-edge distance of 240 mm for the X-/Ku-band and 75 mm for the Ka-band. In order to increase the Tx-Rx isolation, three sets of annular corrugations are etched on the side wall of the cylindrical cavity and conformal absorbers are added around the horns in X-/Ku-band. A prototype antenna system is fabricated and measured. The measured Tx-Rx isolation is greater than 80.9 dB in the X-/Ku-band and 71.6 dB in the Ka-band. The measured gain in the two bands is higher than 14.3, and 20.1 dBiC, respectively.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"8876-8881"},"PeriodicalIF":4.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-01DOI: 10.1109/TAP.2024.3467671
Hongyun Deng;George V. Eleftheriades
In this communication, an active cloak for an object in uniform translation is designed. Utilizing the special theory of relativity, the cloak could be designed conventionally in the co-moving frame, while it is shown that the object is also cloaked in the stationary frame. Next, an active cloak for a moving PEC sphere is designed as an example. Finally, some numerical results are given to show the effectiveness of the cloak in suppressing the scattering of the moving sphere.
{"title":"Design of an Active Cloak for Canceling Scattering From an Object in Uniform Translation","authors":"Hongyun Deng;George V. Eleftheriades","doi":"10.1109/TAP.2024.3467671","DOIUrl":"https://doi.org/10.1109/TAP.2024.3467671","url":null,"abstract":"In this communication, an active cloak for an object in uniform translation is designed. Utilizing the special theory of relativity, the cloak could be designed conventionally in the co-moving frame, while it is shown that the object is also cloaked in the stationary frame. Next, an active cloak for a moving PEC sphere is designed as an example. Finally, some numerical results are given to show the effectiveness of the cloak in suppressing the scattering of the moving sphere.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"8899-8903"},"PeriodicalIF":4.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-09-30DOI: 10.1109/TAP.2024.3466399
Yongjian Zhang;Peihang Li;Xu Qin;Peiyu Liang;Kunpeng Wei;Yue Li
This article proposes an asymmetric dual-polarized microstrip antenna (DPMA) with single-dimension-constraint resonant frequencies for orthogonal polarizations. Different from regular DPMAs, the orthogonal modes of the proposed antenna are only determined by a single dimension, breaking the symmetry limitations of dual-polarized (DP) antennas and leading to the irrelevant dimension for optimized radiation properties of gain and beamwidth. The proposed antenna consists of a vertical-slot-etched rectangular patch with two groups of shorting vias and a horizontal slot on the ground. By feeding two ports with differential or common modes, the antiphase TM10 or antiphase epsilon-near-zero (ENZ) modes are excited for orthogonal polarizations in extremely asymmetric structures. As an application example for mobile terminals, a circular-polarized (CP) antenna with a 90°-phase-step two-way power divider is constructed and integrated onto the upper metal bezel with a high aspect ratio for satellite communications. The measured results show an overlapped bandwidth of 40 MHz and beamwidth beyond 80° in a volume of $0.39times 0.026times 0.0065~lambda _{0}^{3}$ , exhibiting the unique design approach for DP or CP antennas in extremely asymmetric platforms.
{"title":"Dual-Polarized Microstrip Antenna With Single-Dimension-Constraint Resonant Frequency","authors":"Yongjian Zhang;Peihang Li;Xu Qin;Peiyu Liang;Kunpeng Wei;Yue Li","doi":"10.1109/TAP.2024.3466399","DOIUrl":"https://doi.org/10.1109/TAP.2024.3466399","url":null,"abstract":"This article proposes an asymmetric dual-polarized microstrip antenna (DPMA) with single-dimension-constraint resonant frequencies for orthogonal polarizations. Different from regular DPMAs, the orthogonal modes of the proposed antenna are only determined by a single dimension, breaking the symmetry limitations of dual-polarized (DP) antennas and leading to the irrelevant dimension for optimized radiation properties of gain and beamwidth. The proposed antenna consists of a vertical-slot-etched rectangular patch with two groups of shorting vias and a horizontal slot on the ground. By feeding two ports with differential or common modes, the antiphase TM10 or antiphase epsilon-near-zero (ENZ) modes are excited for orthogonal polarizations in extremely asymmetric structures. As an application example for mobile terminals, a circular-polarized (CP) antenna with a 90°-phase-step two-way power divider is constructed and integrated onto the upper metal bezel with a high aspect ratio for satellite communications. The measured results show an overlapped bandwidth of 40 MHz and beamwidth beyond 80° in a volume of \u0000<inline-formula> <tex-math>$0.39times 0.026times 0.0065~lambda _{0}^{3}$ </tex-math></inline-formula>\u0000, exhibiting the unique design approach for DP or CP antennas in extremely asymmetric platforms.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"8365-8374"},"PeriodicalIF":4.6,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This article investigates the impact of antenna dispersion on wideband Terahertz (THz) imaging systems. It is demonstrated that the effective bandwidth is reduced from the nominal system bandwidth, and thus, the expected image resolution cannot be reached when the antenna system has inappropriate frequency dispersion characteristics. Besides a theoretical analysis and simulations, experiments were conducted using antennas with different dispersion characteristics in an ultra-wideband 500–750 GHz imaging setup to assess the impact on achievable resolution. When utilizing low dispersion dielectric-lens antennas, the system successfully detected multiple targets with a radius of 0.6 mm even when positioned at close distance (2 mm in cross-range and 3 mm in range). In contrast to that, when using higher dispersion horn antennas, the resolution of a dual-target scenario was reduced to 3 mm in cross-range and 4 mm in range. Furthermore, it is shown that the target position reconstruction accuracy, as well as the signal-to-clutter ratio (SCR), are also improved by 68% and 2.7 dB, respectively, when using low dispersion antennas in the same setup. This investigation, for the first time, highlights the importance of considering antenna dispersion for accurate image reconstruction, particularly for high-resolution wideband THz imaging systems.
{"title":"Investigating the Impact of Antenna Dispersion on Time Reversal Wideband THz Imaging Systems","authors":"Alireza Madannejad;Mohammad Mehrabi Gohari;Umer Shah;Joachim Oberhammer","doi":"10.1109/TAP.2024.3466473","DOIUrl":"https://doi.org/10.1109/TAP.2024.3466473","url":null,"abstract":"This article investigates the impact of antenna dispersion on wideband Terahertz (THz) imaging systems. It is demonstrated that the effective bandwidth is reduced from the nominal system bandwidth, and thus, the expected image resolution cannot be reached when the antenna system has inappropriate frequency dispersion characteristics. Besides a theoretical analysis and simulations, experiments were conducted using antennas with different dispersion characteristics in an ultra-wideband 500–750 GHz imaging setup to assess the impact on achievable resolution. When utilizing low dispersion dielectric-lens antennas, the system successfully detected multiple targets with a radius of 0.6 mm even when positioned at close distance (2 mm in cross-range and 3 mm in range). In contrast to that, when using higher dispersion horn antennas, the resolution of a dual-target scenario was reduced to 3 mm in cross-range and 4 mm in range. Furthermore, it is shown that the target position reconstruction accuracy, as well as the signal-to-clutter ratio (SCR), are also improved by 68% and 2.7 dB, respectively, when using low dispersion antennas in the same setup. This investigation, for the first time, highlights the importance of considering antenna dispersion for accurate image reconstruction, particularly for high-resolution wideband THz imaging systems.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"72 11","pages":"8375-8384"},"PeriodicalIF":4.6,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10700650","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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