IEEE Open Journal of Antennas and Propagation最新文献

{"title":"Optically Transparent Single-Layer Dual-Frequency Dual-Polarization Metasurface Applied in Close Proximity to Smartphone Millimeter-Wave Phased Array Antenna Systems","authors":"Wen Fu;Igor Syrytsin;Rocio Rodriguez Cano;Peiye Liu;Andrey Kobyakov;Gert Frølund Pedersen;Shuai Zhang","doi":"10.1109/OJAP.2025.3549085","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3549085","url":null,"abstract":"An optically transparent single-layer dual-frequency dual-polarization metasurface operating at 28 GHz and 38 GHz is proposed to enhance millimeter-wave transmission through glass. The unit cell design of the proposed metasurface has three distinct pattern types: square annular, Jerusalem cross, and circular. The former pattern can independently control the low-frequency resonance, while the latter two can control the high-frequency resonance. The proposed metasurface can achieve a large incident angle of 60 degrees for electromagnetic waves in TE and TM polarizations. After the metal layer of the proposed metasurface is meshed, the transparency of the metasurface is significantly improved. The meshed metasurface can be coated on the glass back cover of a smartphone to improve the performance of the millimeter-wave phased array antenna system under the glass back cover without affecting the aesthetics of the smartphone back cover. The prototype of a dual-band patch phased array antenna with the metasurface-coated glass superstrate is fabricated and tested as proof of concept. The experimental results are good and the effectiveness of the proposed metasurface is well verified.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 3","pages":"789-796"},"PeriodicalIF":3.5,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10916750","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170830","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}

{"title":"A Wideband 4×4 Patch Array Antenna With Low Sidelobes for Radar-Based Obstacle Detection in Railway Transportation","authors":"Thipamas Phakaew;Tiwat Pongthavornkamol;Danai Torrungrueng;Thomas Dallmann;Suramate Chalermwisutkul","doi":"10.1109/OJAP.2025.3548112","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3548112","url":null,"abstract":"This paper presents the design, fabrication, and measurement of a <inline-formula> <tex-math>$4times 4$ </tex-math></inline-formula> patch array antenna for radar-based obstacle detection systems in railway transportation. Sidelobe suppression is achieved through amplitude tapering of sub-array elements in the E-plane and asymmetric power dividers in the feed network for the H-plane. The array antenna is framed by a coplanar ground conductor to further reduce sidelobes and fed by a coplanar waveguide port for enhanced impedance bandwidth. The proposed antenna offers an impedance bandwidth from 9.13 GHz to 9.76 GHz (6.3%) and a broadside gain of 18.15 dBi at the center frequency of 9.55 GHz. Sidelobe suppression exceeds 12.22 dB and 19.06 dB in the E- and H-plane, respectively. The 3-dB beamwidth is 17° in the E-plane and 16° in the H-plane with simulated radiation efficiency of 85%. A prototype was fabricated and measured, with sensitivity analysis conducted to assess performance variations due to fabrication tolerances and measurement fixture effects. To validate system performance, antenna prototypes were integrated into a frequency-modulated continuous wave radar system and tested in a realistic railway environment. The system successfully detected a truck crossing a railway track at approximately 1,260 meters, confirming the antenna’s suitability for radar-based obstacle detection in railway transportation.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 3","pages":"774-788"},"PeriodicalIF":3.5,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10912488","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170831","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}

{"title":"An Anisotropic Metamaterial Cover Layer for Scan Range Enhancement of Patch-Antenna Phased Arrays in Both Principal Planes","authors":"Mohammad Soltani;George V. Eleftheriades","doi":"10.1109/OJAP.2025.3548005","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3548005","url":null,"abstract":"This work introduces a metamaterial cover layer designed to extend the scan range of patch-antenna phased arrays in both principal planes without compromising directivity. The key innovation lies in the anisotropic properties of the cover layer which suppress the excitation of the fundamental surface-wave (SW) mode, effectively mitigating scan blindness within the desired angular range. This suppression mechanism is simply not possible with a conventional dielectric-slab wide-angle impedance matching (WAIM) layer. The anisotropic slab SW suppression key mechanism is analyzed using the transverse resonance technique, yielding design equations for practical implementation. The metamaterial cover uniquely combines a wire medium (WM) slab and an artificial dielectric layer. This combination addresses two critical limitations of wide-angle scanning phased arrays: scan blindness and mutual coupling. The performance of the metamaterial cover is analyzed using the current sheet model and the spectral domain Green’s function of the stratified dielectric media, incorporating a detailed model of the WM slab. Results demonstrate an improvement in scan range across more than 10% fractional bandwidth. To validate the concept, a prototype is fabricated and applied to a home-made <inline-formula> <tex-math>$8times 8$ </tex-math></inline-formula>-element patch-antenna phased array with half-wavelength element spacing and a limited scan range. Crucially, in the E-plane, where surface waves limit performance in the bare array, the scan range is dramatically increased from ±30° to ±50°. The prototype achieves a final scan range of ±50° in the E-plane and ±60° in the H-plane, experimentally confirming the effectiveness of the proposed metamaterial cover in enabling wide-angle scanning.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 3","pages":"759-773"},"PeriodicalIF":3.5,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10909674","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170950","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}

{"title":"A Wideband and Low Sidelobe Magnetoelectric Dipole Antenna Array With Embedded Resistors","authors":"Jianhui Huang;Kwai-Man Luk","doi":"10.1109/OJAP.2025.3547376","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3547376","url":null,"abstract":"A simple and effective method, by using ‘0-1’ excitations, to reduce the sidelobe level (SLL) for a wideband magnetoelectric (ME) dipole antenna array is proposed. First of all, the multiple-population genetic algorithm (MPGA) is utilized to search optimal ‘0-1’ excitations for SLL reductions. Then, the ‘0’ and ‘1’ excitation can be achieved by incorporating the absorbing element embedded with a resistor and an ME dipole antenna element, respectively. Different from the traditional tapered excitation techniques, the proposed array utilizes an equal power divider to distribute the power to each element. Finally, a planar <inline-formula> <tex-math>$16times 16$ </tex-math></inline-formula> stripline-fed antenna array according to the optimized array configuration is designed, fabricated, and measured. An overlapped impedance bandwidth of 57% (10–18 GHz) is achieved with the standing wave ratio (SWR) less than 2, and the SLLs are lower than −17.5 dB across 40% bandwidth both in E- and H-planes. In addition, the measured realized gain of this array prototype is up to 26.2 dBi with a high realized aperture efficiency ranging from 61% to 73%. The proposed lightweight, high-gain and high-integration Ku-band antenna array with low SLL characteristics shows great potential in satellite communications.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 3","pages":"749-758"},"PeriodicalIF":3.5,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10909215","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170948","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}

{"title":"Metrology of Multicarrier-Based Delay-Doppler Channel Sounding for Sub-THz Frequencies","authors":"Jonas Gedschold;Diego Dupleich;Sebastian Semper;Michael Döbereiner;Alexander Ebert;Giovanni Del Galdo;Reiner S. Thomä","doi":"10.1109/OJAP.2025.3566473","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3566473","url":null,"abstract":"Developing channel models typically requires aggregating channel measurements and the corresponding extracted propagation parameters from different research institutions to form a sufficiently large data basis. However, uncertainties arising from limitations of the sounding hardware and algorithms may greatly impact the comparability between sounding results. Especially, (sub-)THz channel sounders do not allow simultaneous spatially and timely resolved measurements as known from sub-6 GHz and mm-wave applications (right now), limiting the possibilities of a hardware-independent channel characterization. At the same time, a high Doppler bandwidth may occur due to the high carrier frequencies, limiting the time spans for coherent or incoherent data processing. Hence, assessing the sounder’s performance and limits is important before interpreting the measurement results. Evaluating the sounder performance requires a traceable reference allowing tracing back measurements (or estimated propagation parameters) to a physical ground truth. Therefore, we propose and discuss an over-the-air artifact allowing a joint verification of delay and Doppler parameters in a multipath scenario. The evaluations of exemplary sub-THz measurements with a multicarrier-based sounder highlight the strong interplay between sounder hardware and estimation algorithms, especially when coping with the mutual interference of parameters from multiple propagation paths. Hence, a metrological assessment always requires considering the full processing pipeline from the unprocessed measurements up to the extracted propagation parameters.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 4","pages":"1175-1187"},"PeriodicalIF":3.6,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10982190","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144831683","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}

{"title":"Compressed Sensing Digital MIMO Radar Using a Non-Uniformly Spaced SIW Sparse Receiver Array","authors":"Cristian A. Alistarh;Symon K. Podilchak;Dave J. Bekers;Laura Anitori;Wim L. van Rossum;Rob Boekema;Iram Shahzadi;Mathini Sellathurai;John S. Thompson;Yahia M. M. Antar","doi":"10.1109/OJAP.2025.3546667","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3546667","url":null,"abstract":"A compressed sensing (CS) digital radar system based on a sparse array design is proposed for use in automotive collision-avoidance applications. The proof-of-concept radar system offers an enlarged antenna aperture, employing fewer elements and can distinguish targets at an angular separation of only 2 degrees for a bandwidth of 6.25%. This resolution is made possible using a multiple-input multiple-output (MIMO) configuration from the original sparse array which was implemented and tested using substrate integrated waveguide (SIW) technology. More specifically, the total aperture size (of the effective virtual receiver array) is <inline-formula> <tex-math>$23.5lambda $ </tex-math></inline-formula> which is equivalent to a uniform-linear array (ULA) having 48 elements spaced at <inline-formula> <tex-math>$0.5lambda $ </tex-math></inline-formula> apart. However, the total number of elements is 32. This defines a cost-effective setup offering a reduction of 16 elements which accounts for a 33% reduction in the number of required channels for the SIW array. Also, the radar exploits sparse-reconstruction techniques for target detection. Results of the simulations and measurements show that the performance of the proposed SIW antenna and experimentally verified radar system can offer competitive high-resolution detection when compared to other findings in the literature and to the best knowledge of the authors, no similar antenna and radar system implementation has been designed and experimentally verified.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 3","pages":"735-748"},"PeriodicalIF":3.5,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10907910","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170960","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}

{"title":"Frontiers in Quantum Antennas: Theoretical Foundations, Practical Applications, and Future Outlook","authors":"Abdoalbaset Abohmra;Muhammad Zubair;Masood Ur Rehman;Hasan Abbas;Muhammad A. Imran;Qammer H. Abbasi","doi":"10.1109/OJAP.2025.3545596","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3545596","url":null,"abstract":"Quantum antennas represent a significant leap forward in antenna technology, leveraging the principles of quantum mechanics to enhance communication, imaging, and sensing applications in the terahertz, infrared, and optical regimes. This review begins with an overview of the theoretical foundations for quantum antennas as open quantum systems, discussing how strong coupling and quantum state manipulation can be harnessed for practical implementations. We then examine groundbreaking advancements in quantum antenna design, including the integration of novel material configurations, such as quantum dot arrays and their interactions with photonic reservoirs. The review explores the unique quantum phenomena exhibited by these antennas, including Rabi oscillations, solitons, and non-reciprocal behavior, which set them apart from classical antennas. Additionally, we discuss the role of quantum metasurfaces in manipulating electromagnetic waves at the quantum level, opening new avenues for antenna design and functionality. Understanding these quantum effects enables the optimization of antenna performance for emerging applications in quantum communication, where enhanced security and efficiency are paramount. Finally, this comprehensive analysis not only bridges the gap between classical and quantum antennas but also underscores the remarkable potential of quantum antennas, highlighting future directions and their evolving role in emerging technologies","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 3","pages":"664-693"},"PeriodicalIF":3.5,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10902445","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170951","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}

{"title":"A Review on Antenna Technology Developments for Sub-THz Wireless Communication: Application, Challenges and Opportunities","authors":"Jordi C. F. Zandboer;Gabriele Federico;Ulf Johannsen;A. Bart Smolders","doi":"10.1109/OJAP.2025.3546122","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3546122","url":null,"abstract":"This paper analyzes state-of-the-art antenna concepts in the higher millimeter-wave frequency range (90-300 GHz), commonly referred to as the sub-THz frequency range. As the sub-THz range is still an emerging field of research, the aim of this review is to present and discuss different approaches and concepts reported in literature in the areas of antenna-in-package (AiP), antenna-on-chip (AoC) and other sub-THz antenna technology, focusing on the gain and occupied area parameters. Based on the analysis, it is concluded that AiP and AoC systems are very promising for highly integrated solutions requiring a small form factor, such as inter-device communication. At the same time, other concepts such as lens antennas provide a better solution for high-gain applications like fronthaul/backhaul scenarios. For D-band, a patch-AiP is the dominant antenna choice, but for H-band tailoring the antenna type to a specific application is highly recommended. The challenges involved in designing, manufacturing and measuring sub-THz antennas are best represented by the fact that only 26% of the listed AiP and AoC antennas operating above 200 GHz have documented performance measurements. This can be addressed by choosing the right manufacturing technology as well as measurement setup and corresponding calibration.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 3","pages":"645-663"},"PeriodicalIF":3.5,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10904166","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170909","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}

{"title":"Efficient Neural Network-Based Reconstruction of Three-Dimensional Antenna Radiation Patterns From Two-Dimensional Cuts","authors":"Saeed Jan;Yuanzhi Liu;Costas D. Sarris","doi":"10.1109/OJAP.2025.3544968","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3544968","url":null,"abstract":"This paper presents a novel solution to the classical problem of interpolating three-dimensional antenna radiation patterns from two-dimensional, orthogonal pattern slices. We introduce a neural network model that performs this interpolation with high accuracy across a wide range of patterns, including cases where conventional interpolation methods struggle. This model is beneficial for three-dimensional modeling methods, such as ray-tracing, where a full antenna radiation pattern is needed, whereas only principal plane patterns are available from measurements or data sheets. The proposed neural network combines computational efficiency with superior accuracy compared to available alternative methods.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 3","pages":"726-734"},"PeriodicalIF":3.5,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10899847","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170949","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}

{"title":"A Novel Low Temperature Cofired-Cordierite Ceramic Substrate-Based Compact Ultra-Wideband Circularly Polarized Array Antenna for C-Band Remote Sensing Application","authors":"Subuh Pramono;Josaphat Tetuko Sri Sumantyo;Muhammad Hamka Ibrahim;Ayaka Takahashi;Yuki Yoshimoto;Hisato Kashihara;Cahya Edi Santosa;Steven Gao;Koichi Ito","doi":"10.1109/OJAP.2025.3544279","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3544279","url":null,"abstract":"This research proposes a novel antenna substrate that is realized based on low-temperature co-fired ceramic (LTCC) technology using cordierite ceramic (2MgO 2Al2O<inline-formula> <tex-math>${_{{3}}}~5$ </tex-math></inline-formula>SiO2). Compared to other existing ceramics, it has an impressive low dielectric constant <inline-formula> <tex-math>$rm (epsilon _{r})$ </tex-math></inline-formula> of 4.674 and a loss tangent (tan <inline-formula> <tex-math>$delta $ </tex-math></inline-formula>) of 0.0723 at 5.3 GHz, which makes it ideal for creating an ultra-wideband (UWB) circularly polarized (CP) array antenna. In addition, cordierite ceramic is suitable for high-temperature environments, its coefficient of linear thermal expansion is about <inline-formula> <tex-math>$1.8times 10{^{-}6 }$ </tex-math></inline-formula>/K (40°C– 800°C), and it expands only 0.1% of its room temperature dimensions even in a 1000°C environment. Through a sputtering process, platinum with a melting point of 1768°C and very good oxidation resistance is used as a conductive material on the cordierite ceramic substrate. Based on the measured results, the proposed <inline-formula> <tex-math>$2times 2$ </tex-math></inline-formula> CP array antennas have an ultrawide impedance bandwidth (IBW) of 1.74 GHz (32.83%), an axial ratio bandwidth (ARBW) of 1.26 GHz (23.77%), and a maximum gain of 12.2 dBic. In the experimental test, the proposed <inline-formula> <tex-math>$2times 2$ </tex-math></inline-formula> CP antennas are set up as transmitters and receivers in a CP synthetic aperture radar (SAR) system with full polarimetric modes (L-L, L-R, R-L, and R-R) for remote sensing applications. The transceiver <inline-formula> <tex-math>$2times 2$ </tex-math></inline-formula> CP array antennas have high isolation with an average mutual coupling level of around −65.9 dB. The back projection algorithm is applied to convert the received data into the scattering images and samples the maximum scattering intensities from the scattering images that are presented in scattering matrices. The measured scattering matrices have a similar trend to the theoretical scattering matrices. Based on the heat-exposed measurement, exposure to 500°C of heat on the <inline-formula> <tex-math>$2times 2$ </tex-math></inline-formula> CP array antennas causes physical change. The antennas expand in size, which leads to a slight shift in the center frequency by 140 MHz. This proves that the proposed <inline-formula> <tex-math>$2times 2$ </tex-math></inline-formula> CP array antennas perform well in high-temperature conditions.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 3","pages":"715-725"},"PeriodicalIF":3.5,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10897798","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170959","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}