Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8804025
Shahid Iqbal, Jun Luo, T. Cui
Integration of multiple functionalities into the same meta-device is crucial and is the hot topic of research these days. In this article, we present frequency dependent bifunctional coding metasurface (MS). Sixteen distinct particles are designed which have independent distinct reflection phases in lower X-band and higher Ku-band. We aim to design different bifunctional coding MSs with proper selection of coding particles and proper spatial distribution of them. Three contributions are pro-vided in this work. In the first stage, we present a coding MS which can focus the reflected waves in the lower band and defocus the same in a higher band. In the second case, a MS is de-signed which shape the reflected field in the quad beam in the lower band and provide an anomalous reflection in the higher band. In the last case, a MS is designed which can split the reflected field into two equal parts in lower band and provide an anomalous reflection in the higher band. The concept can be further extended to realize multiple functionalities in multiple bands and can be extended to realize similar functionalities in THz and optical regimes.
{"title":"Bifunctional Meta devices based on frequency-dependent digital coding-Metasurface","authors":"Shahid Iqbal, Jun Luo, T. Cui","doi":"10.1109/IEEE-IWS.2019.8804025","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8804025","url":null,"abstract":"Integration of multiple functionalities into the same meta-device is crucial and is the hot topic of research these days. In this article, we present frequency dependent bifunctional coding metasurface (MS). Sixteen distinct particles are designed which have independent distinct reflection phases in lower X-band and higher Ku-band. We aim to design different bifunctional coding MSs with proper selection of coding particles and proper spatial distribution of them. Three contributions are pro-vided in this work. In the first stage, we present a coding MS which can focus the reflected waves in the lower band and defocus the same in a higher band. In the second case, a MS is de-signed which shape the reflected field in the quad beam in the lower band and provide an anomalous reflection in the higher band. In the last case, a MS is designed which can split the reflected field into two equal parts in lower band and provide an anomalous reflection in the higher band. The concept can be further extended to realize multiple functionalities in multiple bands and can be extended to realize similar functionalities in THz and optical regimes.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122819009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8803883
Yongrong Shi, Ming Zhou, Hao Wang, W. Feng, Kaohua Qian
In this paper, a frequency-modulated continuous-wave (FMCW) SAR imaging radar front-end architecture has been proposed including antenna, W-band transceiver, IF receiver and frequency synthesizer. The dielectric lens horn antennas are applied as the Tx and Rx antennas. The transceiver consists of traditional CNC milling waveguide circuit module with Rogers5880 PCB broad. Firstly, the frequency synthesizer generates X-band FMCW signal and feeds into the W-band transmitter, which is transmitted to the target through Tx antenna. The echo is collected by the Rx dielectric lens horn antenna, amplified and down-conversion by the W-band receiver. The I/Q IF signals are finally received by the IF receiver, which is sent to ADC and signal processing module.
{"title":"W-band Dielectric Lens Horn Antenna and FMCW Circuit Module for SAR Imaging Radar","authors":"Yongrong Shi, Ming Zhou, Hao Wang, W. Feng, Kaohua Qian","doi":"10.1109/IEEE-IWS.2019.8803883","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8803883","url":null,"abstract":"In this paper, a frequency-modulated continuous-wave (FMCW) SAR imaging radar front-end architecture has been proposed including antenna, W-band transceiver, IF receiver and frequency synthesizer. The dielectric lens horn antennas are applied as the Tx and Rx antennas. The transceiver consists of traditional CNC milling waveguide circuit module with Rogers5880 PCB broad. Firstly, the frequency synthesizer generates X-band FMCW signal and feeds into the W-band transmitter, which is transmitted to the target through Tx antenna. The echo is collected by the Rx dielectric lens horn antenna, amplified and down-conversion by the W-band receiver. The I/Q IF signals are finally received by the IF receiver, which is sent to ADC and signal processing module.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131446888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8804086
M. S. Sadiq, C. Ruan
In this paper, a compact, mechanically rugged, DC grounded 45° slant polarized antenna having very low gain ripple in omnidirectional pattern is proposed. The antenna is based on the coaxial cylinder structures, which consists of oversize coaxial cylinders, slots and their feeding assembly and a matching unit. The slant polarization property is realized by four angular slots surrounding the axis of coaxial cylinder in the outer conductor. The antenna is dc ground which eliminates the electrostatic discharge ESD problems. Simulation results show that the antenna bandwidth is of 8.1% (2.56GHz to 2.78 GHz), gain variation in the horizontal plane is less than ±0.14 dB while the cross-polarization level is below 14dB over the whole bandwidth (2.56–2.78 GHz).
{"title":"A Compact, Mechanically rugged, DC Grounded 45° Slant Polarized Low Gain Ripple Omnidirectional Antenna","authors":"M. S. Sadiq, C. Ruan","doi":"10.1109/IEEE-IWS.2019.8804086","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8804086","url":null,"abstract":"In this paper, a compact, mechanically rugged, DC grounded 45° slant polarized antenna having very low gain ripple in omnidirectional pattern is proposed. The antenna is based on the coaxial cylinder structures, which consists of oversize coaxial cylinders, slots and their feeding assembly and a matching unit. The slant polarization property is realized by four angular slots surrounding the axis of coaxial cylinder in the outer conductor. The antenna is dc ground which eliminates the electrostatic discharge ESD problems. Simulation results show that the antenna bandwidth is of 8.1% (2.56GHz to 2.78 GHz), gain variation in the horizontal plane is less than ±0.14 dB while the cross-polarization level is below 14dB over the whole bandwidth (2.56–2.78 GHz).","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131626677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8804034
Xuan Wang, Shubo Dun, Chun Xiao Li, Run Sheng Zhang
A novel algorithm called two-dimensional decomposition Look-Up-Table (TDD-LUT) is proposed in this paper, to address the I/Q imbalance issue facing wideband, uncooperative multi-signals spectrum surveillance applications. TDD-LUT decomposes mixed-mismatches and reconstructs compensation process according to different receivers configurations. Through MATLAB&SIMULINK simulation, The algorithm is demonstrated to improve 20-40dB image frequency rejection ratio (IRR) in a reconfigurable wideband receiver case.
{"title":"Two-Dimensional Decomposition LUT Correction for I/Q Imbalance in Reconfigurable Wideband Receivers","authors":"Xuan Wang, Shubo Dun, Chun Xiao Li, Run Sheng Zhang","doi":"10.1109/IEEE-IWS.2019.8804034","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8804034","url":null,"abstract":"A novel algorithm called two-dimensional decomposition Look-Up-Table (TDD-LUT) is proposed in this paper, to address the I/Q imbalance issue facing wideband, uncooperative multi-signals spectrum surveillance applications. TDD-LUT decomposes mixed-mismatches and reconstructs compensation process according to different receivers configurations. Through MATLAB&SIMULINK simulation, The algorithm is demonstrated to improve 20-40dB image frequency rejection ratio (IRR) in a reconfigurable wideband receiver case.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132791644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8804038
Mahmood Noweir, A. Abdelhafiz, M. Helaoui, F. Ghannouchi, D. Oblak
In this paper, we propose a digital sub-band (SB) filtering layout for Radio-over-Fiber (RoF) downlink transmitter. A proof-of-principle demonstration of 4 and 8 SB processing for a 256 QAM 100 MHz-bandwidth long-term evolution advanced (LTE-A) signal is presented. To alleviate the high processing speed required for next generation 5G signals, perfect reconstruction quadrature mirror filters (QMFs) are used to split and downsample a contiguous-carrier signal into smaller SBs: each containing part of the frequency content. Through measurements and simulation results, this paper demonstrated that the overall signal quality is maintained while achieving a reduction in the processing speed as well as an improvement in the adjacent carrier power ratio (ACPR). Our results demonstrate the advantages of the proposed technique in RoF transmitters networks.
{"title":"Low Speed Digital RoF Transmitter Linearizer Using Sub-band Signal Processing Technique","authors":"Mahmood Noweir, A. Abdelhafiz, M. Helaoui, F. Ghannouchi, D. Oblak","doi":"10.1109/IEEE-IWS.2019.8804038","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8804038","url":null,"abstract":"In this paper, we propose a digital sub-band (SB) filtering layout for Radio-over-Fiber (RoF) downlink transmitter. A proof-of-principle demonstration of 4 and 8 SB processing for a 256 QAM 100 MHz-bandwidth long-term evolution advanced (LTE-A) signal is presented. To alleviate the high processing speed required for next generation 5G signals, perfect reconstruction quadrature mirror filters (QMFs) are used to split and downsample a contiguous-carrier signal into smaller SBs: each containing part of the frequency content. Through measurements and simulation results, this paper demonstrated that the overall signal quality is maintained while achieving a reduction in the processing speed as well as an improvement in the adjacent carrier power ratio (ACPR). Our results demonstrate the advantages of the proposed technique in RoF transmitters networks.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133990168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8803924
Yizhu Shen, Jiawei Yang, Sanming Hu
This paper presents a single-layered coding metasurface with inherently integrated feeding source. It alleviates the feeding blockage and alignment issues in conventional coding metasurface, and achieves a low-profile dimension. The working principle of the proposed coding metasurface is introduced followed by an example demonstration working at millimeter-wave band. It is applied with a chessboard coding sequence, and achieves the beam splitting performance with a compact size.
{"title":"A Single-Layer Integrated Coding Metasurface with Flexible Beam Controlling","authors":"Yizhu Shen, Jiawei Yang, Sanming Hu","doi":"10.1109/IEEE-IWS.2019.8803924","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8803924","url":null,"abstract":"This paper presents a single-layered coding metasurface with inherently integrated feeding source. It alleviates the feeding blockage and alignment issues in conventional coding metasurface, and achieves a low-profile dimension. The working principle of the proposed coding metasurface is introduced followed by an example demonstration working at millimeter-wave band. It is applied with a chessboard coding sequence, and achieves the beam splitting performance with a compact size.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134623226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8804080
K. Inomata, Z. R. Lin, K. Koshino, W. Oliver, J. Tsai, T. Yamamoto, Y. Nakamura
Single photon detection is a requisite technique in quantum-optics experiments in both the optical and the microwave domains. However, the energy of microwave quanta are four to five orders of magnitude less than their optical counterpart, making the efficient detection of single microwave photon extremely challenging. Here, we demonstrate the detection of a single microwave photon propagating through a waveguide. The detector is implemented with an "impedance-matched" artificial Λ system comprising the dressed states of a driven superconducting qubit coupled to a microwave resonator. We attain a single-photon detection efficiency of 0.66±0.06 with a reset time of ~400 ns. This detector can be exploited for various applications in quantum sensing, quantum communication and quantum information processing.
{"title":"Microwave single-photon detection based on dressed-state engineering","authors":"K. Inomata, Z. R. Lin, K. Koshino, W. Oliver, J. Tsai, T. Yamamoto, Y. Nakamura","doi":"10.1109/IEEE-IWS.2019.8804080","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8804080","url":null,"abstract":"Single photon detection is a requisite technique in quantum-optics experiments in both the optical and the microwave domains. However, the energy of microwave quanta are four to five orders of magnitude less than their optical counterpart, making the efficient detection of single microwave photon extremely challenging. Here, we demonstrate the detection of a single microwave photon propagating through a waveguide. The detector is implemented with an \"impedance-matched\" artificial Λ system comprising the dressed states of a driven superconducting qubit coupled to a microwave resonator. We attain a single-photon detection efficiency of 0.66±0.06 with a reset time of ~400 ns. This detector can be exploited for various applications in quantum sensing, quantum communication and quantum information processing.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115896570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8803857
Yueqi Lin, Yuanxin Li, Sizhuo Cheng, Yiming Du, Y. Long
The periodic leaky wave antenna (PLWA) by orthogonally bending microstrip transmission line is presented in this paper. The proposed antenna consists of periodically orthogonally bending microstrip transmission line. The calculation formula of the propagation wavenumber of this antenna is given, and the calculated results and measured results are matched. A simple technique to eliminate the open stopband (OSB) is presented. The prototype antenna was simulated, fabricated and measured, The measurement results show that the main beam scans continuously and from −55° to 63° in y-z plane when the operating frequency increasing from 3.7 GHz to 6.8 GHz. The structure of this PLWA is simple and easy to fabricate.
{"title":"The Periodic Leaky-wave Antenna by Orthogonally Bending Microstrip Transmission Line with Open Stopband Elimination","authors":"Yueqi Lin, Yuanxin Li, Sizhuo Cheng, Yiming Du, Y. Long","doi":"10.1109/IEEE-IWS.2019.8803857","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8803857","url":null,"abstract":"The periodic leaky wave antenna (PLWA) by orthogonally bending microstrip transmission line is presented in this paper. The proposed antenna consists of periodically orthogonally bending microstrip transmission line. The calculation formula of the propagation wavenumber of this antenna is given, and the calculated results and measured results are matched. A simple technique to eliminate the open stopband (OSB) is presented. The prototype antenna was simulated, fabricated and measured, The measurement results show that the main beam scans continuously and from −55° to 63° in y-z plane when the operating frequency increasing from 3.7 GHz to 6.8 GHz. The structure of this PLWA is simple and easy to fabricate.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132545572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8803960
Yang Liu, Yujian Li, Junhong Wang
A novel hepta-band antenna designed for WLAN/LTE/5G operation is investigated. In the millimeter-wave bands, two substrate integrated waveguide slot arrays (SIW-SAAs) coupled with a series of parasitic elements are integrated into the antenna, which operate in 28- and 38- GHz bands (from 27 to 29 GHz and from 36.9 to 39.6 GHz, respectively). In the microwave bands, as the substrate integrated waveguide (SIW) structure can be equivalent to a metallic strip at the frequency much lower than its cut-off frequency, the antenna composed of two SIW sections can work at two loop antenna modes and one PIFA antenna mode, which covering the LTE2300/2500/ WLAN2.4G/5G bands and 3.5-GHz band (3300-3600 MHz) for 5G mobile communications. In addition, the proposed antenna only occupies a space of 18 × 54.5 mm2 and has the advantages of large frequency ratio, simple structure and ease of integration, which makes it suitable for future mobile communication applications.
{"title":"A Hepta-Band Antenna with Large Frequency Ratio for WLAN/LTE/5G Communications","authors":"Yang Liu, Yujian Li, Junhong Wang","doi":"10.1109/IEEE-IWS.2019.8803960","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8803960","url":null,"abstract":"A novel hepta-band antenna designed for WLAN/LTE/5G operation is investigated. In the millimeter-wave bands, two substrate integrated waveguide slot arrays (SIW-SAAs) coupled with a series of parasitic elements are integrated into the antenna, which operate in 28- and 38- GHz bands (from 27 to 29 GHz and from 36.9 to 39.6 GHz, respectively). In the microwave bands, as the substrate integrated waveguide (SIW) structure can be equivalent to a metallic strip at the frequency much lower than its cut-off frequency, the antenna composed of two SIW sections can work at two loop antenna modes and one PIFA antenna mode, which covering the LTE2300/2500/ WLAN2.4G/5G bands and 3.5-GHz band (3300-3600 MHz) for 5G mobile communications. In addition, the proposed antenna only occupies a space of 18 × 54.5 mm2 and has the advantages of large frequency ratio, simple structure and ease of integration, which makes it suitable for future mobile communication applications.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132245304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-05-01DOI: 10.1109/IEEE-IWS.2019.8804156
J. Yang, S. Xiao, Yan Li
In this article, a wideband wide-angle scanning phased array is designed using all-metal Vivaldi antenna with reflective floor and triangular grid as array element. The simulation and test results show that the X-band array with 16 × 16 elements can realize no-gate lobe beam scan of ±60 °on both E and H planes and the maximum gain decrease is 3.4 dBi, and the active VSWR is less than 2.5 in the scanning range.
{"title":"Design of X-Band Wide-Angle Scanning All-Metal Phased Array Antenna","authors":"J. Yang, S. Xiao, Yan Li","doi":"10.1109/IEEE-IWS.2019.8804156","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2019.8804156","url":null,"abstract":"In this article, a wideband wide-angle scanning phased array is designed using all-metal Vivaldi antenna with reflective floor and triangular grid as array element. The simulation and test results show that the X-band array with 16 × 16 elements can realize no-gate lobe beam scan of ±60 °on both E and H planes and the maximum gain decrease is 3.4 dBi, and the active VSWR is less than 2.5 in the scanning range.","PeriodicalId":306297,"journal":{"name":"2019 IEEE MTT-S International Wireless Symposium (IWS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131955891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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