{"title":"IEEE Transactions on Antennas and Propagation Publication Information","authors":"","doi":"10.1109/TAP.2026.3737321","DOIUrl":"https://doi.org/10.1109/TAP.2026.3737321","url":null,"abstract":"","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 10","pages":"C2-C2"},"PeriodicalIF":5.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11732244","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149131403","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}
Amirhossein Babaee;Zachary Fritts;Steve M. Young;Anthony Grbic
{"title":"Analysis of Multitone, Multiconductor, Spatially Discrete Traveling-Wave-Modulated Loop Networks","authors":"Amirhossein Babaee;Zachary Fritts;Steve M. Young;Anthony Grbic","doi":"10.1109/TAP.2026.3707304","DOIUrl":"https://doi.org/10.1109/TAP.2026.3707304","url":null,"abstract":"This work presents a spatially discrete traveling-wave modulated (SDTWM) loop networks, which exhibit cavity-like behavior and support discrete spatiotemporal modes. We introduce a computationally efficient method, based on the Interpath Relation, to analyze periodic networks using a single unit cell. This allows characterization of driven systems with single-tone, multitone, and multiconductor loop configurations. The framework captures both multimodal and multifrequency harmonic interactions and is extended to compute the spatial Green’s functions of such loop networks using analytic array scanning (AAS). The analysis of example designs, such as an electrically small antenna and a nonmagnetic circulator, is presented. These examples confirm that the proposed approach is computationally efficient and offers physical insights, making it well-suited for the optimization of multifunctional and nonreciprocal SDTWM electromagnetic systems.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 10","pages":"9582-9597"},"PeriodicalIF":5.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149130809","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}
{"title":"Beampattern Synthesis With Minimum Phase Quantization Bits via Kronecker Decomposition","authors":"Tianyuan Gu;Kejiang Wu;Xuejing Zhang;Wei Cui;Qing Shen","doi":"10.1109/TAP.2026.3720249","DOIUrl":"https://doi.org/10.1109/TAP.2026.3720249","url":null,"abstract":"In practical implementations, phase excitations are inherently discrete, and the number of phase quantization bits significantly affects hardware complexity and cost. To reduce the cost of array systems, this communication proposes a beampattern synthesis method with the minimum phase quantization bits required. By exploiting the Vandermonde structure of the phase alphabet and the properties of the Kronecker product/decomposition, we formulate an optimization method that minimizes phase quantization bits via mixed-integer programming (MIP). The method is further extended to dual-phase-shifter (DPS) structures by constructing a phase candidate matrix that represents combined branch excitations. Both formulations incorporate dimension reduction techniques to improve computational efficiency.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 10","pages":"10109-10114"},"PeriodicalIF":5.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149131304","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}
Huaimin Zhou;Shengchi Zhu;Yunpeng Ma;Dongliang Liu;Yuanqi Guo;Zhenxin Cao
{"title":"Bilayer Polarization-Asymmetric Impedance Matching Surface for Wide-Angle Scanning Enhancement of Planar Ultrawideband Arrays","authors":"Huaimin Zhou;Shengchi Zhu;Yunpeng Ma;Dongliang Liu;Yuanqi Guo;Zhenxin Cao","doi":"10.1109/TAP.2026.3711677","DOIUrl":"https://doi.org/10.1109/TAP.2026.3711677","url":null,"abstract":"In this article, a bilayer polarization-asymmetric impedance matching surface (PAIMS) is proposed to improve the impedance matching performance over a wide scanning angle range in both E-/H-planes for planar ultrawideband antenna arrays. The PAIMS consists of two layers of periodic metal strip arrays etched on thin dielectric substrates. Within each unit cell, the upper layer PAIMS comprises four uniformly arranged metal strips, which are primarily intended to enhance the impedance matching performance in the low-frequency band at large scanning angles in the H-plane. Similarly, the lower layer PAIMS consists of ten rows of closely spaced dipole-shaped metal strips, which improves the impedance matching performance over the high-frequency band. Furthermore, the polarization asymmetry of the PAIMS results in distinct equivalent capacitance in the E- and H-planes, enabling simultaneous impedance matching enhancement for both planes at wide scanning angles. To verify the idea, a planar ultrawideband modular antenna (PUMA) array loaded with the proposed PAIMS has been designed and measured. The simulation results indicate that the PUMA array achieves a bandwidth ratio of 3:1 (6–18 GHz) with active VSWR <inline-formula> <tex-math>$leq 1.80$ </tex-math></inline-formula> when scanning up to 60° in both E- and H-planes. A prototype array of <inline-formula> <tex-math>$12times 12$ </tex-math></inline-formula> elements was manufactured and tested, and the experimental results are in agreement with the simulation well.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 10","pages":"9648-9660"},"PeriodicalIF":5.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149131410","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}
{"title":"A Beam and Polarization Switchable All-Dielectric Transmitarray Antenna Enabled by Lego-Type Reassemblable Modular Unit","authors":"Xinlian Du;Yu Shao;Changhong Zhang;Yu Yao;Jie Zhang","doi":"10.1109/TAP.2026.3720269","DOIUrl":"https://doi.org/10.1109/TAP.2026.3720269","url":null,"abstract":"This communication proposes a novel Lego-type modular unit for an all-dielectric reassemblable transmitarray antenna (RTA). The unit cell is discretized into small particles serving distinct functions of phase-shifting, antireflection, and polarization conversion. The particles can be assembled together conveniently by Lego’s stud and tube structure, enabling highly flexible beam and polarization switching. Linearly polarized (LP) and circularly polarized (CP) RTAs with <inline-formula> <tex-math>$16times 16$ </tex-math></inline-formula> unit cells are designed, and the prototypes are manufactured by low-cost 3-D-printing technology. The LP RTA attains a beam scanning range of ±60° with a peak gain of 25.6 dBi and an aperture efficiency of 39.2% at 23 GHz, and exhibits a 1-dB gain bandwidth of 19.1% (20.4–24.6 GHz). The CP RTA achieves a beam scanning range of ±40° while exhibiting a 1-dB gain bandwidth of 29.6% (19.7–26.5 GHz) and a 3-dB axial ratio bandwidth (ARBW) of 27.1% (18.5–24.2 GHz). Furthermore, the proposed dielectric particles have simple and uniform structures, which facilitate massive and rapid fabrication.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 10","pages":"10031-10036"},"PeriodicalIF":5.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149131502","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}
Bin Tang;Yu Luo;Eric Newton Moro;Ningning Yan;Kaixue Ma
{"title":"A Dual-Polarized Broadband and Gain-Enhanced SISL Antenna Array With Multipoint Differential Feeding for mmWave Applications","authors":"Bin Tang;Yu Luo;Eric Newton Moro;Ningning Yan;Kaixue Ma","doi":"10.1109/TAP.2026.3712359","DOIUrl":"https://doi.org/10.1109/TAP.2026.3712359","url":null,"abstract":"This article presents a gain-enhanced, dual-polarized broadband substrate integrated suspended line (SISL) antenna featuring a cross-shaped patch. To address the tradeoff between wideband operation, high peak realized gain, and gain stability frequently encountered in millimeter-wave (mmWave) designs, the primary contribution of this work is the introduction of a systematic multipoint feeding structure (MPFS). By utilizing characteristic mode analysis (CMA) as a design guide, the proposed MPFS suppresses undesired high-order modes (HOMs), enabling the simultaneous optimization of broadband impedance matching, peak realized gain enhancement, and gain stability. Specifically, the proposed MPFS yields a 4-dBi peak realized gain enhancement and extends the operating fractional bandwidth (FBW) by 6.9 percentage points (from 26.5–28.2 to 26.3–30 GHz) compared to the initial feeding baseline. Furthermore, by incorporating an upgraded capacitive bent MPFS, the total operating FBW is significantly extended by 34.6 percentage points, achieving an expanded bandwidth of 23.8–34.5 GHz. A fabricated array demonstrates measured results consistent with simulations, achieving an operating bandwidth of 23.7–37.8 GHz, a peak realized gain of 18.5 dBi, and enhanced gain stability. The added value of this work is twofold: it provides a standardized CMA-guided modal control framework applicable to general patch antenna designs, and it achieves competitive mmWave performance entirely on standard FR4, offering a practical, cost-effective alternative to specialized high-frequency laminates for 5G applications.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 10","pages":"9510-9519"},"PeriodicalIF":5.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149131506","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}
Yiwen Wang;Fengchun Zhang;Le Yu;Xiaocong Chen;Wei Fan
{"title":"An Efficient Wide-Angle Calibration Method for ISAC Base Stations in a Multiprobe Setup","authors":"Yiwen Wang;Fengchun Zhang;Le Yu;Xiaocong Chen;Wei Fan","doi":"10.1109/TAP.2026.3711671","DOIUrl":"https://doi.org/10.1109/TAP.2026.3711671","url":null,"abstract":"Integrated sensing and communication (ISAC) is envisioned as a cornerstone of sixth-generation (6G) wireless networks. Unlike conventional base stations (BSs) that only steer beams within a limited angular range, ISAC BSs should accurately estimate the direction of arrival (DoA) of echoes over a wide angular domain to support high-accuracy sensing. The inevitable inconsistencies among radio frequency (RF) chains and element radiation patterns, however, can severely degrade beam-steering performance in receive mode, making comprehensive over-the-air (OTA) calibration essential. This work introduces a novel wide-angle calibration framework that leverages sparse multiprobe sampling in the midfield (MF) region to capture far-field (FF) angle-dependent response samples of each individual array element, subsequently reconstructing the complete wide-angle calibration coefficient via interpolation. A comprehensive system model is developed, and practical guidelines for parameter selection (measurement distance, scanning range, and sampling density) are derived. The method is compatible with multiple excitation modes (e.g., on–off and all-on). The framework is validated through full-wave simulations of a home-made <inline-formula> <tex-math>$4{,}times {,}8$ </tex-math></inline-formula> Vivaldi array. Experimental campaigns in a planar near-field (NF) chamber and a compact antenna test range (CATR) confirm that even with the minimum probe configuration (<inline-formula> <tex-math>$5{,}times {,}7$ </tex-math></inline-formula>) determined by the derived criterion, the reconstructed element patterns closely match the reference, enabling nearly error-free DoA estimation over a ±60° azimuth field of view, substantially outperforming conventional boresight calibration. The proposed approach thus offers an efficient, low-cost, and versatile solution for wide-angle calibration of ISAC BSs.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 10","pages":"9981-9993"},"PeriodicalIF":5.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149131694","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}
{"title":"Measurement-Based Channel Modeling for Marine-to-Terrestrial Communications in Port and Open-Coast Scenarios","authors":"Weirong Liu;Mi Yang;Shun Zhou;Bo Ai;Yiyan Ma;Yong Niu;Jianhua Fan;Dan Fei;Jiayi Zhang;Zhaohui Song","doi":"10.1109/TAP.2026.3706947","DOIUrl":"https://doi.org/10.1109/TAP.2026.3706947","url":null,"abstract":"With the accelerating development of the marine economy and offshore activities, long-range, wide-coverage, and reliable wireless communication has become a critical enabler for modern maritime operations. Among various maritime communication scenarios, marine-to-port and marine-to-open-coast links constitute the two most representative and widely deployed forms of marine–terrestrial connectivity, supporting navigation control, logistics, public services, and emergency communication. The 720-MHz band, belonging to the 5G NR n28 band, is increasingly adopted for maritime communication due to its superior propagation range and strong diffraction capability, yet its channel characteristics over the sea remain insufficiently explored. In this article, we conduct a comprehensive broadband measurement campaign in the 720-MHz band for the above two scenarios and develop channel models tailored to long-distance marine connectivity. Based on the measurement data, we analyze the channel stationarity, fading behavior, and multidomain dispersion characteristics. Furthermore, we propose an improved two-ray path loss model and a fine-grained clustered delay line (CDL) model. Both models achieve high accuracy, with path-loss modeling errors within 3.44 dB and cluster-level delay-power evolution accurately reproduced. These results provide measurement-based insights and modeling foundations for designing and optimizing next-generation maritime wireless communication systems operating in the 700-MHz band.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 10","pages":"9831-9845"},"PeriodicalIF":5.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149131820","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}
{"title":"A Nematic Liquid-Crystal-Fed Fabry–Pérot Cavity Antenna With a Passive PRS for Gain-Enhanced Beam Steering","authors":"Hsi-Hsir Chou;Chun-Sheng Wang","doi":"10.1109/TAP.2026.3720314","DOIUrl":"https://doi.org/10.1109/TAP.2026.3720314","url":null,"abstract":"This communication presents a reconfigurable Fabry–Pérot cavity (FPC) antenna that integrates a compact <inline-formula> <tex-math>$1times 2$ </tex-math></inline-formula> liquid-crystal (LC) microstrip patch-array feed with a fully passive partially reflective surface (PRS) for gain-enhanced beam steering at 14.25 GHz. The proposed architecture confines reconfigurability to the LC feed while keeping the PRS passive, enabling 1-D beam steering under three representative LC-bias states without RF switches or bulky phase shifters. Full-wave simulations show that PRS loading increases the peak gain from 7.9 to 8.02 dBi for the standalone LC feed to 11.2–11.6 dBi over the nominal ±10° scan range, corresponding to a simulation-based gain enhancement of 3.3–3.6 dB, or approximately 2.2 times in linear scale, with only minor changes in input matching. Measurements of a fabricated prototype validate beam steering from approximately −14° to +10°, with peak gains of 10.0–10.42 dBi and a gain variation of only 0.42 dB across the three LC-bias states. The prototype also achieves measured aperture and radiation efficiencies of about 30% and 43%, respectively. These results demonstrate that confining LC reconfigurability to a compact feed while retaining a passive PRS provides a practical route to gain-enhanced moderate-angle beam steering with reduced active-aperture complexity.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 10","pages":"10043-10048"},"PeriodicalIF":5.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149131899","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}
{"title":"A Dual-Circularly Polarized Gain-Filtering Reflectarray Antenna","authors":"Zou Long;Zhengji Xu","doi":"10.1109/TAP.2026.3719858","DOIUrl":"https://doi.org/10.1109/TAP.2026.3719858","url":null,"abstract":"This communication proposes a dual-circularly polarized (dual-CP) reflectarray (RA) antenna with gain-filtering and independent beam control functionalities. The proposed RA cell is implemented using a hybrid coupler in conjunction with a dual-linearly polarized filtering radiator and two shorted phase delay lines, enabling independent and continuous phase compensation for dual-CP waves. The filtering performance of the radiator is achieved by incorporating a stacked patch and a parasitic square ring into a fundamental microstrip line coupled patch antenna for introducing two radiation nulls within the low and high stopbands, thereby obviating the need for additional filters. To reduce the overall profile of the RA antenna, a planar dual-CP filtering antenna employing the same architecture as the RA cell is designed as the feed source. By combining the dual-CP filtering feed source with the RA cells arranged across the aperture to provide independent phase gradients for the right-hand circular polarization (RHCP) and left-hand circular polarization (LHCP) beams, a dual-CP gain-filtering RA antenna is designed, fabricated, and verified. The RA antenna demonstrates a measured peak gain of around 22 dBic, with a 3-dB gain and axial-ratio (AR) bandwidth of about 14.0% for both the LHCP and RHCP beams. Furthermore, the measurements reveal gain reductions exceeding 20.0 and 15.5 dB at the low and high stopbands, respectively, for both the LHCP and RHCP beams. The proposed dual-CP RA antenna offers a gain-filtering and highly integrated solution for B5G/6G millimeter-wave (mm-Wave) systems.","PeriodicalId":13102,"journal":{"name":"IEEE Transactions on Antennas and Propagation","volume":"74 10","pages":"10073-10078"},"PeriodicalIF":5.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149133890","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}