IEEE Open Journal of Antennas and Propagation最新文献_第6页

Input-Blind Antenna Range Reflection Mitigation via Channel Estimation 通过信道估计减少输入盲天线距离反射

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-03-13 DOI: 10.1109/OJAP.2026.3693124

Nicholas K. Host;Suhaily Cardona-Romero;Timothy A. Davis;Allan R. Jablon

{"title":"Input-Blind Antenna Range Reflection Mitigation via Channel Estimation","authors":"Nicholas K. Host;Suhaily Cardona-Romero;Timothy A. Davis;Allan R. Jablon","doi":"10.1109/OJAP.2026.3693124","DOIUrl":"https://doi.org/10.1109/OJAP.2026.3693124","url":null,"abstract":"Antenna range surface reflections are commonly mitigated in continuous-wave measurements using frequency sweeps and time-domain gating; however, these techniques are not well suited for characterizing non-continuous-wave or operational waveforms radiated by integrated systems and subsystems. Channel-estimation-based reflection mitigation methods have been shown to address this limitation, but existing approaches require direct access to the transmit waveform, which is often unavailable in practice. This paper presents two input-blind antenna range reflection mitigation methods that operate using only signals collected at the range antenna, removing the need for access to the system under test’s internally generated transmit signal. Both methods leverage a characterization waveform to estimate the reflection response and subsequently predict and mitigate undesired multipath contributions in measured test signals. The proposed techniques are validated experimentally on an outdoor antenna range using a variety of waveform types, bandwidths, and pulsewidths, including measurements conducted in both controlled and complex reflection environments. Results demonstrate reflection mitigation performance comparable to prior channel-estimation-based approaches while significantly expanding applicability to integrated systems and measurement scenarios for which transmit signal access is infeasible.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"7 4","pages":"1287-1295"},"PeriodicalIF":3.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11517461","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Beam-Steerable Fabry–Perot Cavity Antenna With Mechanically Tunable Partially Reflective Surfaces for 6G Applications 具有机械可调部分反射表面的6G应用波束可操纵法布里-珀罗腔天线

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-04-30 DOI: 10.1109/OJAP.2026.3689395

Edoardo Giusti;Pierpaolo Usai;Danilo Brizi;Agostino Monorchio

{"title":"Beam-Steerable Fabry–Perot Cavity Antenna With Mechanically Tunable Partially Reflective Surfaces for 6G Applications","authors":"Edoardo Giusti;Pierpaolo Usai;Danilo Brizi;Agostino Monorchio","doi":"10.1109/OJAP.2026.3689395","DOIUrl":"https://doi.org/10.1109/OJAP.2026.3689395","url":null,"abstract":"A Fabry-Perot cavity antenna with beam steering capability enabled by the movement of a Partially Reflective Surface (PRS) is presented. Fabry-Perot cavities are commonly used due to their attractive properties, especially high gain and low profile. However, this configuration also presents design challenges when deployed for beam steering. Typically, beam steering is achieved by incorporating varactors into the metasurface unit-cells to locally modify the phase response with a controlled slope, which significantly complicates the implementation due to the feeding network introduction. To address this issue, the proposed solution involves designing the cavity in such a way that beam steering is achieved solely by moving the passive Partially Reflective Surface (PRS) along the cavity height direction. However, this approach leads to an increase in the Side Lobe Level (SLL) values, which worsens with progressively larger beam angles. To overcome the drawback, an aperiodic version of the PRS is opportunely introduced. By comparing the radiation patterns of the cavity equipped with the classical periodic metasurface against the aperiodic design, both gain preservation and SLL values reduction can be accomplished. Through accurate numerical simulations and experimental measurements acquired on fabricated prototypes, it emerges that the use of an aperiodic metasurface results in a SLL reduction ranging from 7.66 dB to 3 dB while maintaining the same gain level. The reduction in SLL up to 40° of beam tilting angle makes this antenna a suitable candidate for future 6G applications, in which beam scanning plays a critical role.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"7 4","pages":"1232-1243"},"PeriodicalIF":3.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11501960","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-Task Learning for Real-Time Atmospheric Duct Characterization in Wireless Propagation Channels 无线传播信道中实时大气管道表征的多任务学习

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-06-01 DOI: 10.1109/OJAP.2026.3698684

Mohammed Banafaa;Ali Hussein Muqaibel

{"title":"Multi-Task Learning for Real-Time Atmospheric Duct Characterization in Wireless Propagation Channels","authors":"Mohammed Banafaa;Ali Hussein Muqaibel","doi":"10.1109/OJAP.2026.3698684","DOIUrl":"https://doi.org/10.1109/OJAP.2026.3698684","url":null,"abstract":"Atmospheric ducting significantly influences radio wave propagation, especially in maritime and desert regions. Rapid refractive-index variations critically affect signal propagation, especially for next-generation systems operating in the sub-6 GHz and higher frequency bands. Existing atmospheric duct models are often limited in scope, typically focusing on single-output prediction tasks and relying on synthetic or surface-level inputs, which do not fully capture the vertical refractivity structure required for flight-level duct characterization. To address this gap, this paper introduces a multi-task learning (MTL) framework that combines convolutional neural networks (CNNs) with bidirectional long short-term memory (BiLSTM) networks to sequentially detect duct occurrence, classify duct types, and predict essential duct characteristics. The model is trained and evaluated using two years of vertical profile data for a coastal region, with stratified 5-fold cross-validation (CV) and independent hold-out test set. In addition to point-estimate performance, the framework is validated using uncertainty-aware Monte Carlo test-time stochasticity on the test data to quantify predictive uncertainty and assess robustness of duct characterization. Results demonstrate superior duct detection accuracy, reliable duct-type classification, and robust duct-parameter prediction compared with denser MTL-CNN and MTL-LSTM baselines. The proposed framework provides a practical basis for real-time atmospheric duct assessment and has the potential to enhance propagation forecasting for advanced radar and high-frequency communication systems.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"7 4","pages":"1386-1395"},"PeriodicalIF":3.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11541202","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Millimeter-Wave Flat-Top Fan-Beam Antenna Array Based on a Geometry-Independent Resonant Cavity 基于几何无关谐振腔的毫米波平顶扇形波束天线阵列

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-06-15 DOI: 10.1109/OJAP.2026.3703713

Evandro C. Vilas Boas;Sofia B. De Vasconcellos;Arismar Cerqueira Sodré;Felipe A. P. de Figueiredo

{"title":"A Millimeter-Wave Flat-Top Fan-Beam Antenna Array Based on a Geometry-Independent Resonant Cavity","authors":"Evandro C. Vilas Boas;Sofia B. De Vasconcellos;Arismar Cerqueira Sodré;Felipe A. P. de Figueiredo","doi":"10.1109/OJAP.2026.3703713","DOIUrl":"https://doi.org/10.1109/OJAP.2026.3703713","url":null,"abstract":"This work presents a novel antenna design capable of producing a flat-top fan-beam profile through the integration of slotted apertures and a geometry-independent resonator. Starting with a three-slot cavity-backed design, the radiator is reconfigured into a five-slot structure by reshaping its geometry while preserving the original cross-sectional area, converting a pencil beam into a fan-shaped beam without shifting the resonant operating frequency. The cavity is loaded with an FR4 dielectric slab to achieve impedance matching, and metallic rods are placed around the slab to suppress undesired mode coupling. In addition, a stepped profile is utilized around the slot apertures to increase the flat-top beamwidth. The prototype exhibits a measured −10 dB bandwidth over 1.11 GHz, a 1 dB beamwidth directivity with ripple below 0.71 dB over <inline-formula> <tex-math>$60^{circ } - 70^{circ } $ </tex-math></inline-formula>, a 3 dB beamwidth over 80°, a peak realized gain of 7.84 dBi, and sidelobe levels below −10.02 dB. The proposed design offers a compact and competitive size compared to existing fan-beam antenna solutions, with overall dimensions of <inline-formula> <tex-math>$0.95lambda _{o} times 2.33lambda _{o} times 3.10lambda _{o}$ </tex-math></inline-formula>, while maintaining a simple structural configuration.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"7 4","pages":"1425-1433"},"PeriodicalIF":3.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11563493","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and Characterization of Wideband Dual-Polarized Double-Slot Lens Antenna With Low Cross-Polarization at Sub-THz in SiGe-BiCMOS SiGe-BiCMOS中亚太赫兹低交叉极化宽带双极化双槽透镜天线的设计与特性研究

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-03-06 DOI: 10.1109/OJAP.2026.3690779

Alexandros Bechrakis Triantafyllos;Maria Alonso-Delpino;Daniele Cavallo;Klaus Aufinger;Marco Spirito;Nuria Llombart

{"title":"Design and Characterization of Wideband Dual-Polarized Double-Slot Lens Antenna With Low Cross-Polarization at Sub-THz in SiGe-BiCMOS","authors":"Alexandros Bechrakis Triantafyllos;Maria Alonso-Delpino;Daniele Cavallo;Klaus Aufinger;Marco Spirito;Nuria Llombart","doi":"10.1109/OJAP.2026.3690779","DOIUrl":"https://doi.org/10.1109/OJAP.2026.3690779","url":null,"abstract":"This work details the design and characterization of a wideband on-chip dual-polarized double-slot antenna for sub-THz frequencies, integrated in SiGe-BiCMOS technology. The proposed design features two perpendicularly arranged double-slots that provide dual-linear polarization and efficient illumination of dielectric lenses through the silicon substrate. To decrease the level of cross-polarization, a number of parasitic slots are added. Two feeding architectures have been studied, leading to two different prototypes. The first is designed in a 130 nm SiGe-BiCMOS process and is tailored for integration with single-ended circuit topologies. It achieves a maximum antenna efficiency of 63% in its operational bandwidth of 170-250 GHz, with a cross-polarized component lower than −22 dB up to 240 GHz. The second prototype is designed in a 90 nm process and is suited for differential circuits. A 55% fractional bandwidth is achieved around the central frequency of 287.5 GHz, with a maximum antenna efficiency of 56% and a cross-polarized component lower than −19.5 dB. The port isolation is better than −37 dB up to 300 GHz. Both prototypes are characterized in the 200-325 GHz frequency range, with very good agreement between the measurements and simulations.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"7 4","pages":"1266-1279"},"PeriodicalIF":3.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11510315","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wide-Angle Scanning Heterogeneous Antenna Array Using Asymmetrically-Fed Magneto-Electric Dipole 采用非对称馈电磁电偶极子的广角扫描非均匀天线阵列

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-03-12 DOI: 10.1109/OJAP.2026.3692703

Guangwei Fan;Dawei Ding

{"title":"Wide-Angle Scanning Heterogeneous Antenna Array Using Asymmetrically-Fed Magneto-Electric Dipole","authors":"Guangwei Fan;Dawei Ding","doi":"10.1109/OJAP.2026.3692703","DOIUrl":"https://doi.org/10.1109/OJAP.2026.3692703","url":null,"abstract":"In this paper, a ±90° beam-scanning heterogeneous antenna array (HAA) consisting of asymmetrically-fed magneto-electric (AF-ME) dipole elements is proposed for the first time. In the design of AF-ME dipole antenna, two offsets are introduced to excite the operating mode of planar pseudo-Yagi antenna in traditional ME dipole antenna. Different from the beam tilting elements in the existing HAAs, this proposed AF-ME dipole element exhibits stable antenna gains and half-power beam-widths (HPBWs) at different main beam directions, great cross-polarization isolations, and self-decoupling characteristics. As seen from the measured results, even when the scanning angle achieves ±90°, this designed HAA exhibits a scan loss of less than 2.8 dB, a sidelobe level (SLL) of less than –10 dB, a cross-polarization isolation of greater than 31 dB, and a port isolation of greater than 18 dB without any decoupling structures within 23.9-24.4 GHz (2.1%). Therefore, this proposed heterogeneous antenna array is promising for the detection without blind spots in 24-GHz short-range automotive radar systems.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"7 4","pages":"1280-1286"},"PeriodicalIF":3.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11516218","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel Method for Continuous Beam Scanning Leaky-Wave Antenna Based on SIW T-Junction Impedance Matching 基于SIW t结阻抗匹配的连续波束扫描漏波天线新方法

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-04-28 DOI: 10.1109/OJAP.2026.3688079

Cheng Chen;Zengpei Zhong;Yingxin Lai;Shaopeng Wan

{"title":"Novel Method for Continuous Beam Scanning Leaky-Wave Antenna Based on SIW T-Junction Impedance Matching","authors":"Cheng Chen;Zengpei Zhong;Yingxin Lai;Shaopeng Wan","doi":"10.1109/OJAP.2026.3688079","DOIUrl":"https://doi.org/10.1109/OJAP.2026.3688079","url":null,"abstract":"A novel substrate-integrated-waveguide (SIW) leaky-wave antenna (LWA) based on an H-plane waveguide T-junction is presented to mitigate the open stopband (OSB). The unit cell of the proposed antenna consists of a transverse-slot SIW T-junction and a short-circuited SIW cavity loaded with or without a perpendicular slot. By controlling the input impedance of the SIW cavity, the series and shunt reactance of the transverse slot can be canceled out to achieve continuous beam scanning from backward to forward through broadside for both linearly polarized (LP) and circularly polarized (CP) LWA. Using an equivalent circuit model, the working principle of the beam-scanning technique based on SIW T-junction is explained theoretically. Finally, a 10-element CP SIW LWA prototype is designed, fabricated, and measured for verification. The prototype provides a continuous beam scanning from −62° to <inline-formula> <tex-math>$text {+} 32^{circ }$ </tex-math></inline-formula> over the frequency range of 4.8–6.6 GHz, and a gain variation between 9.8 and 13.2 dBi. The beam scanning with a consistent gain shows good circular polarization in the broadside and forward directions, and elliptical polarization at backward direction. The measured results are in good agreement with the simulation and calculation, which validates the effectiveness of the proposed method.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"7 4","pages":"1215-1224"},"PeriodicalIF":3.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11495188","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Far-Field Characterization of High-Gain Antennas at 300-GHz Band Based on a Photonics-Based Near-Field Measurement 基于光子近场测量的300 ghz高增益天线远场特性研究

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-04-27 DOI: 10.1109/OJAP.2026.3687402

Yusuke Tanaka;Kento Ishihara;Kota Miyake;Keizo Inagaki;Shintaro Hisatake

{"title":"Far-Field Characterization of High-Gain Antennas at 300-GHz Band Based on a Photonics-Based Near-Field Measurement","authors":"Yusuke Tanaka;Kento Ishihara;Kota Miyake;Keizo Inagaki;Shintaro Hisatake","doi":"10.1109/OJAP.2026.3687402","DOIUrl":"https://doi.org/10.1109/OJAP.2026.3687402","url":null,"abstract":"This paper presents a photonics-based near-field measurement approach for characterizing far-field radiation patterns of high-gain antennas operating at 300-GHz. Utilizing an electro-optic (EO) probe for electric near-field sensing, the system enables stable and precise acquisition of amplitude and phase over long measurement durations, which is essential for evaluating antennas with nominal gains exceeding 40 dBi. Far-field patterns reconstructed from near-field data using cylindrical mode expansion showed excellent agreement with direct far-field measurements conducted at an outdoor site with an antenna separation of 53 m. This result confirms that tabletop photonics-based near-field systems can serve as practical alternatives to outdoor far-field ranges at sub-terahertz frequencies. Quantitative evaluation using the equivalent noise level (ENL) metric demonstrated high pattern fidelity, with average ENL values below −35 dB within the −10 dB beamwidth region. Fine structural features, including low-level sidelobes, were also accurately reproduced. Comparisons with the ITU-R F.699-8 reference radiation pattern revealed narrower predicted beamwidths and underestimated sidelobe levels, likely due to model limitations and radome effects, suggesting the need for updates above 86 GHz. The proposed method offers a scalable and practical solution for antenna metrology in frequency regimes where conventional direct far-field measurements and CATR systems face significant implementation challenges.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"7 4","pages":"1189-1199"},"PeriodicalIF":3.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11494828","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148675696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IEEE Open Journal of Antennas and Propagation Publication Information IEEE天线与传播公开杂志出版信息

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-08-06 DOI: 10.1109/OJAP.2026.3712429

引用次数: 0

Additively Manufactured Waveguide Orthomode Transducer in the K-Band for Dual-Circular Polarization Broadband Satellite Antennas 用于双圆极化宽带卫星天线的k波段增材波导正交换能器

IF 3.4

IEEE Open Journal of Antennas and Propagation Pub Date : 2026-08-01 Epub Date: 2026-04-09 DOI: 10.1109/OJAP.2026.3682156

José Rico-Fernández;Guillermo Menéndez;Manuel Arrebola;Nelson J. G. Fonseca

{"title":"Additively Manufactured Waveguide Orthomode Transducer in the K-Band for Dual-Circular Polarization Broadband Satellite Antennas","authors":"José Rico-Fernández;Guillermo Menéndez;Manuel Arrebola;Nelson J. G. Fonseca","doi":"10.1109/OJAP.2026.3682156","DOIUrl":"https://doi.org/10.1109/OJAP.2026.3682156","url":null,"abstract":"Two compact orthomode transducers (OMTs), one providing dual-linear polarization and one providing dual-circular polarization, are presented for broadband K-band satellite communication antennas over 17.7–20.2 GHz. The contribution of this work is not limited to the use of Laser Powder Bed Fusion (LPBF) additive manufacturing, but lies in the co-design-for-manufacturing adaptation of compact waveguide OMT architectures to enable monolithic metallic realization under LPBF constraints. In the dual-linear case, a previously reported compact two-probe concept is re-designed with additive-manufacturing-compatible matching and enclosure features. In the dual-circular case, a Riblet-coupler-based architecture is integrated with the compact OMT concept and adapted to LPBF manufacturing through geometry modifications compatible with overhang, wall-thickness, and printing-orientation limitations. For experimental validation, both OMTs are manufactured in AlSi10Mg and tested using transitions to WR42 waveguide and a conical horn antenna. Measured results show return loss and port-to-port isolation better than 25.2 dB and 18.1 dB for the dual-linear OMT, and 22.4 dB and 23.8 dB for the dual-circular OMT, in good agreement with simulations. The demonstrated combination of electromagnetic design and LPBF-oriented mechanical adaptation is of interest for compact, lightweight, and monolithic dual-polarized waveguide components and array antennas in the millimeter-wave band.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"7 4","pages":"1167-1175"},"PeriodicalIF":3.4,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11478448","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148676001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0