Pub Date : 2015-11-01DOI: 10.1109/COMCAS.2015.7360490
R. Sananes, E. Socher
A low power receiver at V band for multi users Gb/s communication is reported. The device operates in three bands from 52GHz to 57GHz. The die includes a wide band LNA, a sub harmonic mixer, an IF amplifier and a driver to 50 Ohm output load. The direct conversion architecture was chosen to achieve a high adjacent channel rejection. The receiver requires an external lower frequency LO signal thanks to the sub-harmonic mixer. The LNA consumes 32mW and achieves a peak gain of 14dB and a minimum NF of 5dB. Its 3dB measured bandwidth is 37% (52-75GHz). The whole receiver consumes 76mW and achieves a maximum conversion gain of 29dB with a high IF bandwidth of 2.5GHz in an area of 0.3mm2.
{"title":"Multiband receiver for Gb/s communication at mm-wave frequencies","authors":"R. Sananes, E. Socher","doi":"10.1109/COMCAS.2015.7360490","DOIUrl":"https://doi.org/10.1109/COMCAS.2015.7360490","url":null,"abstract":"A low power receiver at V band for multi users Gb/s communication is reported. The device operates in three bands from 52GHz to 57GHz. The die includes a wide band LNA, a sub harmonic mixer, an IF amplifier and a driver to 50 Ohm output load. The direct conversion architecture was chosen to achieve a high adjacent channel rejection. The receiver requires an external lower frequency LO signal thanks to the sub-harmonic mixer. The LNA consumes 32mW and achieves a peak gain of 14dB and a minimum NF of 5dB. Its 3dB measured bandwidth is 37% (52-75GHz). The whole receiver consumes 76mW and achieves a maximum conversion gain of 29dB with a high IF bandwidth of 2.5GHz in an area of 0.3mm2.","PeriodicalId":431569,"journal":{"name":"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121689524","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 : 2015-11-01DOI: 10.1109/COMCAS.2015.7360447
Sascha Lischer, M. Heiss, Matthias Landwehr, W. Fischer
A 24 GHz RFID System-on-a-Chip (SoC) with On-Chip Antenna (OCA) is presented. Using the SHF band for RFID applications gives the opportunity of integrating such an OCA, which reduces the costs (no bonding necessary etc.) and the overall size of the tags. The presented tag is ISO 18000-6C / EPC C1G2 compatible, including all data rates and multi tag capability. To keep the costs low, a standard CMOS technology is used. With a transmit power of 20 dBm and the tag placed in front of an open-ended waveguide, it harvests enough energy to communicate with a reader, which is currently under development using inexpensive standard components.
{"title":"A 24 GHz RFID system-on-a-chip with on-chip antenna, compatible to ISO 18000-6C / EPC C1G2","authors":"Sascha Lischer, M. Heiss, Matthias Landwehr, W. Fischer","doi":"10.1109/COMCAS.2015.7360447","DOIUrl":"https://doi.org/10.1109/COMCAS.2015.7360447","url":null,"abstract":"A 24 GHz RFID System-on-a-Chip (SoC) with On-Chip Antenna (OCA) is presented. Using the SHF band for RFID applications gives the opportunity of integrating such an OCA, which reduces the costs (no bonding necessary etc.) and the overall size of the tags. The presented tag is ISO 18000-6C / EPC C1G2 compatible, including all data rates and multi tag capability. To keep the costs low, a standard CMOS technology is used. With a transmit power of 20 dBm and the tag placed in front of an open-ended waveguide, it harvests enough energy to communicate with a reader, which is currently under development using inexpensive standard components.","PeriodicalId":431569,"journal":{"name":"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132055689","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 : 2015-11-01DOI: 10.1109/COMCAS.2015.7360454
P. Krivic, G. Radosavljevic, S. Birgermajer, N. Cselyuszka, H. Arthaber
Low temperature co-fired ceramics (LTCC) have shown to be one of the most admirable materials in high-frequency components design ([1], [2]). Low dielectric losses and the applicability of highly conductive materials are making them desirable in production of high quality passive components, most often capacitors and inductors. These are the reasons that made this technology attractive for the circulator fabrication, and present the core of this paper. Bosma type of the circulator with Y-junction configuration is the topic of this work and is intended to use at the 5 GHz. Field analysis and the design of the circulator was adopted from Bosma in [3] and Wu in [4]. Theoretical analysis from these works predicts the values of geometrical parameters and the COMSOL simulation was made to confirm its validity. The fabrication process included standard LTCC production procedure consisting of dielectric and ferrite tape preparation, laser cutting, photolithographic screen stencil preparation, screen printing, lamination and, finally, co-firing. Fabricated samples were magnetically polarized and characterized. To maintain magnetic polarization of the produced circulator, small disk shaped neodymium magnets were placed on top and bottom of the ferrite discs. Measurements and characterization were performed on vector network analyzer in range of 4.5 - 8 GHz.
{"title":"Design and fabrication of the Bosma stripline circulator in LTCC technology","authors":"P. Krivic, G. Radosavljevic, S. Birgermajer, N. Cselyuszka, H. Arthaber","doi":"10.1109/COMCAS.2015.7360454","DOIUrl":"https://doi.org/10.1109/COMCAS.2015.7360454","url":null,"abstract":"Low temperature co-fired ceramics (LTCC) have shown to be one of the most admirable materials in high-frequency components design ([1], [2]). Low dielectric losses and the applicability of highly conductive materials are making them desirable in production of high quality passive components, most often capacitors and inductors. These are the reasons that made this technology attractive for the circulator fabrication, and present the core of this paper. Bosma type of the circulator with Y-junction configuration is the topic of this work and is intended to use at the 5 GHz. Field analysis and the design of the circulator was adopted from Bosma in [3] and Wu in [4]. Theoretical analysis from these works predicts the values of geometrical parameters and the COMSOL simulation was made to confirm its validity. The fabrication process included standard LTCC production procedure consisting of dielectric and ferrite tape preparation, laser cutting, photolithographic screen stencil preparation, screen printing, lamination and, finally, co-firing. Fabricated samples were magnetically polarized and characterized. To maintain magnetic polarization of the produced circulator, small disk shaped neodymium magnets were placed on top and bottom of the ferrite discs. Measurements and characterization were performed on vector network analyzer in range of 4.5 - 8 GHz.","PeriodicalId":431569,"journal":{"name":"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131542060","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 : 2015-11-01DOI: 10.1109/COMCAS.2015.7360401
P. Kryszkiewicz, H. Bogucka
This paper presents a preamble-based time and frequency synchronization algorithm for an NC-OFDM-based Cognitive Radio (CR) system. While keeping its computational complexity close to the commonly known, autocorrelation-based Schmidl&Cox algorithm, it is robust against narrowband interference (NBI), e.g. from Primary Users (PUs). Essentially, the proposed algorithm does not require to know any parameters of NBI. Simulations results confirm its usefulness even in the case of a real interference.
{"title":"Synchronization for NC-OFDM-based Cognitive Radio, robust against narrowband primary user","authors":"P. Kryszkiewicz, H. Bogucka","doi":"10.1109/COMCAS.2015.7360401","DOIUrl":"https://doi.org/10.1109/COMCAS.2015.7360401","url":null,"abstract":"This paper presents a preamble-based time and frequency synchronization algorithm for an NC-OFDM-based Cognitive Radio (CR) system. While keeping its computational complexity close to the commonly known, autocorrelation-based Schmidl&Cox algorithm, it is robust against narrowband interference (NBI), e.g. from Primary Users (PUs). Essentially, the proposed algorithm does not require to know any parameters of NBI. Simulations results confirm its usefulness even in the case of a real interference.","PeriodicalId":431569,"journal":{"name":"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132184289","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 : 2015-11-01DOI: 10.1109/COMCAS.2015.7360462
Kaiyuan Zeng, D. Psychogiou, W. Allen, D. Peroulis
This paper reports on the design of a frequency-tunable lumped-element bandpass resonator with wide tuning range (1.45:1) and high third-order input intercept point (IIP3 > 40 dBm). The filter tuning is realized by means of a continuously variable capacitance that is formed by a hybrid combination of a back-to-back varactor pair-operated in the high DC bias region-and a switched network of static capacitors. An experimental prototype was designed, built and measured for proof-of-concept demonstration purposes. It exhibited a tunable frequency between 95 and 138 MHz (1.45:1) and insertion loss between 1.83 and 2.25 dB. Within this frequency range, the in-band IIP3 was measured above 40 dBm.
{"title":"A continuously tunable 95–138 MHz bandpass resonator with 40 dBm IIP3","authors":"Kaiyuan Zeng, D. Psychogiou, W. Allen, D. Peroulis","doi":"10.1109/COMCAS.2015.7360462","DOIUrl":"https://doi.org/10.1109/COMCAS.2015.7360462","url":null,"abstract":"This paper reports on the design of a frequency-tunable lumped-element bandpass resonator with wide tuning range (1.45:1) and high third-order input intercept point (IIP3 > 40 dBm). The filter tuning is realized by means of a continuously variable capacitance that is formed by a hybrid combination of a back-to-back varactor pair-operated in the high DC bias region-and a switched network of static capacitors. An experimental prototype was designed, built and measured for proof-of-concept demonstration purposes. It exhibited a tunable frequency between 95 and 138 MHz (1.45:1) and insertion loss between 1.83 and 2.25 dB. Within this frequency range, the in-band IIP3 was measured above 40 dBm.","PeriodicalId":431569,"journal":{"name":"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114687827","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 : 2015-11-01DOI: 10.1109/COMCAS.2015.7360476
Shih-Ting Liu, Yao-Wen Hsu, Yi-Cheng Lin
A dual-polarized wideband aperture antenna operating in millimeter wave band (about 30GHz) for MIMO applications in 5G mobile communication systems is presented. Using the tapered aperture hybrid structure and the backed-cavity design on PCB technology, the antenna achieves dual-polarized and unidirectional broadside radiation. The proposed antenna also possesses a high port-to-port isolation of better than 26dB and a broad impedance bandwidth of 25%. This work further extends to a 4-element array with an isolation better than 18 dB under array arrangement. The antenna design were verified by simulation and measurement.
{"title":"A dual polarized cavity-backed aperture antenna for 5G mmW MIMO applications","authors":"Shih-Ting Liu, Yao-Wen Hsu, Yi-Cheng Lin","doi":"10.1109/COMCAS.2015.7360476","DOIUrl":"https://doi.org/10.1109/COMCAS.2015.7360476","url":null,"abstract":"A dual-polarized wideband aperture antenna operating in millimeter wave band (about 30GHz) for MIMO applications in 5G mobile communication systems is presented. Using the tapered aperture hybrid structure and the backed-cavity design on PCB technology, the antenna achieves dual-polarized and unidirectional broadside radiation. The proposed antenna also possesses a high port-to-port isolation of better than 26dB and a broad impedance bandwidth of 25%. This work further extends to a 4-element array with an isolation better than 18 dB under array arrangement. The antenna design were verified by simulation and measurement.","PeriodicalId":431569,"journal":{"name":"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114952442","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 : 2015-11-01DOI: 10.1109/COMCAS.2015.7360357
J. Weitzen, Rachel Wakim, Erin Webster
This paper presents results from the first measurements comparing the coverage and coverage quality of a network of coordinated LTE small cell radio points compared to a cluster of independent standalone LTE small cells. The measurements are compared to theoretical predictions and show that the coordinated small cell provides significant improvement in the overall quality of LTE coverage as measured by RSRP, SINR, CQI and MCS. The indoor measurements described in this paper were made with a new autonomous robotic system designed for making indoor wireless coverage measurements.
{"title":"Comparing RSRP, CQI, and SINR measurements with predictions for coordinated and uncoordinated LTE small cell networks","authors":"J. Weitzen, Rachel Wakim, Erin Webster","doi":"10.1109/COMCAS.2015.7360357","DOIUrl":"https://doi.org/10.1109/COMCAS.2015.7360357","url":null,"abstract":"This paper presents results from the first measurements comparing the coverage and coverage quality of a network of coordinated LTE small cell radio points compared to a cluster of independent standalone LTE small cells. The measurements are compared to theoretical predictions and show that the coordinated small cell provides significant improvement in the overall quality of LTE coverage as measured by RSRP, SINR, CQI and MCS. The indoor measurements described in this paper were made with a new autonomous robotic system designed for making indoor wireless coverage measurements.","PeriodicalId":431569,"journal":{"name":"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129805012","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 : 2015-11-01DOI: 10.1109/COMCAS.2015.7360405
A. Bessemoulin, J. Tarazi, P. Evans, S. Mahon
The design aspects and performance of a cost efficient 2-Watt Ku-band power amplifier are presented. The circuit is fabricated at the least spending with 0.5-μm GaAs PHEMT technology and standard plastic QFN package. Thanks to efficient design approaches, this compact packaged power amplifier MMIC (7.1mm2) demonstrates a measured linear gain averaging 30 dB across the full PtP Ku-band, and delivers more than +32 dBm CW power at 1-dB gain compression (P1dB), and +33 dBm output power in saturation (Psat). Typical measured OIP3 is greater than +41 dBm. To further reduce the cost and minimize component count in RF module, the PA MMIC integrates a temperature compensated on-chip power detector with 45-dB dynamic range for output power monitoring, together with on-chip EOS/ESD protections to ±400 V CDM for rugged and reliable operation. The overall PA performance, covering both the 13 and 15 GHz PtP bands with a single circuit, competes favorably well to other more advanced solutions reported in the literature or available on the market. Furthermore, the presented compact design considerations can be applied to greatly reduce manufacturing cost in other circuits and technologies (e.g. GaN).
{"title":"Design aspects and performance of cost-efficient packaged power amplifiers","authors":"A. Bessemoulin, J. Tarazi, P. Evans, S. Mahon","doi":"10.1109/COMCAS.2015.7360405","DOIUrl":"https://doi.org/10.1109/COMCAS.2015.7360405","url":null,"abstract":"The design aspects and performance of a cost efficient 2-Watt Ku-band power amplifier are presented. The circuit is fabricated at the least spending with 0.5-μm GaAs PHEMT technology and standard plastic QFN package. Thanks to efficient design approaches, this compact packaged power amplifier MMIC (7.1mm2) demonstrates a measured linear gain averaging 30 dB across the full PtP Ku-band, and delivers more than +32 dBm CW power at 1-dB gain compression (P1dB), and +33 dBm output power in saturation (Psat). Typical measured OIP3 is greater than +41 dBm. To further reduce the cost and minimize component count in RF module, the PA MMIC integrates a temperature compensated on-chip power detector with 45-dB dynamic range for output power monitoring, together with on-chip EOS/ESD protections to ±400 V CDM for rugged and reliable operation. The overall PA performance, covering both the 13 and 15 GHz PtP bands with a single circuit, competes favorably well to other more advanced solutions reported in the literature or available on the market. Furthermore, the presented compact design considerations can be applied to greatly reduce manufacturing cost in other circuits and technologies (e.g. GaN).","PeriodicalId":431569,"journal":{"name":"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128983655","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 : 2015-11-01DOI: 10.1109/COMCAS.2015.7360439
Li Tang, Xiangning Fan, Zaijun Hua
An improved phase frequency detector (PFD) and a novel charge pump (CP) for phase locked loop (PLL) applications are presented. The mechanisms for widening the phase error detection range and eliminating the dead zone are applied in the proposed PFD. To maintain a fast locked performance and a stable loop bandwidth for multi-standard frequency synthesizer applications, a programmable structure and sub-circuits are developed. Implemented by 0.18μm CMOS process, the PFD has correct logic function, whereas the charge pump is stable in the output range of 0.4V~1.4V with a current mismatch less than 1.5%, and the power consumption is 2.3mW under a 1.8V supply.
{"title":"CMOS phase frequency detector and charge pump for multi-standard frequency synthesizer","authors":"Li Tang, Xiangning Fan, Zaijun Hua","doi":"10.1109/COMCAS.2015.7360439","DOIUrl":"https://doi.org/10.1109/COMCAS.2015.7360439","url":null,"abstract":"An improved phase frequency detector (PFD) and a novel charge pump (CP) for phase locked loop (PLL) applications are presented. The mechanisms for widening the phase error detection range and eliminating the dead zone are applied in the proposed PFD. To maintain a fast locked performance and a stable loop bandwidth for multi-standard frequency synthesizer applications, a programmable structure and sub-circuits are developed. Implemented by 0.18μm CMOS process, the PFD has correct logic function, whereas the charge pump is stable in the output range of 0.4V~1.4V with a current mismatch less than 1.5%, and the power consumption is 2.3mW under a 1.8V supply.","PeriodicalId":431569,"journal":{"name":"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130508211","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 : 2015-11-01DOI: 10.1109/COMCAS.2015.7360392
M. Kozlov, G. Schaefers
The implant model obtained by 3D EM and thermal co-simulation was used to estimate power deposition and temperature rise due to the presence of bare titanium rods placed in a high permittivity medium for uniform and non-uniform 64 MHz incident electric fields. No correlation between power deposition and temperature rise were observed. Worst-case temperature rise for an implant with a fixed diameter and variable length excited by a tangential electric field with constant amplitude can be estimated using the implant thermal model. For other cases further extensive investigations are required.
{"title":"An assessment of radio frequency induced heating of an implant","authors":"M. Kozlov, G. Schaefers","doi":"10.1109/COMCAS.2015.7360392","DOIUrl":"https://doi.org/10.1109/COMCAS.2015.7360392","url":null,"abstract":"The implant model obtained by 3D EM and thermal co-simulation was used to estimate power deposition and temperature rise due to the presence of bare titanium rods placed in a high permittivity medium for uniform and non-uniform 64 MHz incident electric fields. No correlation between power deposition and temperature rise were observed. Worst-case temperature rise for an implant with a fixed diameter and variable length excited by a tangential electric field with constant amplitude can be estimated using the implant thermal model. For other cases further extensive investigations are required.","PeriodicalId":431569,"journal":{"name":"2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126481906","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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