Pub Date : 2018-06-01DOI: 10.1109/MWSYM.2018.8439845
A. M. Angelotti, G. P. Gibiino, T. Nielsen, F. Tafuri, A. Santarelli
This paper presents a novel single-instrument solution for combined characterization of power amplifiers (PAs) at radiofrequency (RF) and baseband. It extends the capabilities of a commercial vector network analyzer (VNA) platform by enabling calibrated and synchronized RF envelope and baseband current/voltage measurements on the supply terminal of the amplifier across several MHz of bandwidth. As an application example, full three-port measurements of a 2-W gallium nitride (GaN) PA are reported.
{"title":"Three Port Non-Linear Characterization of Power Amplifiers under Modulated Excitations Using a Vector Network Analyzer Platform","authors":"A. M. Angelotti, G. P. Gibiino, T. Nielsen, F. Tafuri, A. Santarelli","doi":"10.1109/MWSYM.2018.8439845","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439845","url":null,"abstract":"This paper presents a novel single-instrument solution for combined characterization of power amplifiers (PAs) at radiofrequency (RF) and baseband. It extends the capabilities of a commercial vector network analyzer (VNA) platform by enabling calibrated and synchronized RF envelope and baseband current/voltage measurements on the supply terminal of the amplifier across several MHz of bandwidth. As an application example, full three-port measurements of a 2-W gallium nitride (GaN) PA are reported.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"34 1","pages":"1021-1024"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72656207","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 : 2018-06-01DOI: 10.1109/MWSYM.2018.8439667
Zhilin Chen, Zhengdong Jiang, Zhiqing Liu, Yixuan Cheng, Lin Zhang, Dong Chen, Jingzhi Zhang, Shoutian Sun, Jiayu Dong, P. Liu, Youxi Zhou, Huihua Liu, Chenxi Zhao, Yunqiu Wu, Xianghua Li, Jianping Zhao, K. Kang
This paper presents a 39 GHz dual-channel transceiver chipset with LTCC package for 5G fixed wireless access (FWA) communication. The proposed transceiver chipset integrates two variable-gain frequency conversion channels, one LO chain and one SPI block. This chipset is fabricated in a standard 65 nm CMOS process. The TX results a maximum gain of 11 dB and a $mathbf{P}_{mathbf{sat}}$ of 8.4 dBm, while the RX supplies a maximum gain of 52 dB, a NF of 5.4 dB and an OP1dB of 7.2 dBm. The single-chan-nel communication link achieves an EVM of 3.72% for 64 QAM modulation and an EVM of 3.76% for 256 QAM modulation over 1 m distance.
{"title":"A 256-QAM 39 GHz Dual-Channel Transceiver Chipset with LTCC Package for 5G Communication in 65 nm CMOS","authors":"Zhilin Chen, Zhengdong Jiang, Zhiqing Liu, Yixuan Cheng, Lin Zhang, Dong Chen, Jingzhi Zhang, Shoutian Sun, Jiayu Dong, P. Liu, Youxi Zhou, Huihua Liu, Chenxi Zhao, Yunqiu Wu, Xianghua Li, Jianping Zhao, K. Kang","doi":"10.1109/MWSYM.2018.8439667","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439667","url":null,"abstract":"This paper presents a 39 GHz dual-channel transceiver chipset with LTCC package for 5G fixed wireless access (FWA) communication. The proposed transceiver chipset integrates two variable-gain frequency conversion channels, one LO chain and one SPI block. This chipset is fabricated in a standard 65 nm CMOS process. The TX results a maximum gain of 11 dB and a $mathbf{P}_{mathbf{sat}}$ of 8.4 dBm, while the RX supplies a maximum gain of 52 dB, a NF of 5.4 dB and an OP1dB of 7.2 dBm. The single-chan-nel communication link achieves an EVM of 3.72% for 64 QAM modulation and an EVM of 3.76% for 256 QAM modulation over 1 m distance.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"11 1","pages":"1476-1479"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81921992","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 : 2018-06-01DOI: 10.1109/MWSYM.2018.8439328
Duy P. Nguyen, Nguyen L. K. Nguyen, A. Stameroff, A. Pham
We demonstrate a highly linear wideband distributed amplifier (DA). For the first time, an intermodulation feedforward linearization technique is introduced in a distributed structure to achieve a very wideband linear amplifier. The proposed circuit is designed and fabricated in an Indium Phosphide (InP) Heterojunction bipolar transistor (HBT) process. The measured results exhibit an average 10 dB of gain with a 3-dB bandwidth that extends from dc to 90 GHz. The maximum output 1-dB compression power $mathbf{(P_{mathrm{1dB}})}$ is 20.5 dBm, and output third-order intercept point (OIP3) is 33 dBm, respectively. Compared to a conventional design, the power and linearity of the linearized DA are enhanced significantly over a very wide frequency range from dc to 65 GHz while maintaining low power consumption.
{"title":"A Highly Linear InP Distributed Amplifier Using Ultra-wideband Intermodulation Feedforward Linearization","authors":"Duy P. Nguyen, Nguyen L. K. Nguyen, A. Stameroff, A. Pham","doi":"10.1109/MWSYM.2018.8439328","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439328","url":null,"abstract":"We demonstrate a highly linear wideband distributed amplifier (DA). For the first time, an intermodulation feedforward linearization technique is introduced in a distributed structure to achieve a very wideband linear amplifier. The proposed circuit is designed and fabricated in an Indium Phosphide (InP) Heterojunction bipolar transistor (HBT) process. The measured results exhibit an average 10 dB of gain with a 3-dB bandwidth that extends from dc to 90 GHz. The maximum output 1-dB compression power $mathbf{(P_{mathrm{1dB}})}$ is 20.5 dBm, and output third-order intercept point (OIP3) is 33 dBm, respectively. Compared to a conventional design, the power and linearity of the linearized DA are enhanced significantly over a very wide frequency range from dc to 65 GHz while maintaining low power consumption.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"9 1","pages":"1356-1359"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84204768","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 : 2018-06-01DOI: 10.1109/MWSYM.2018.8439625
C. Reimann, Martin Schülsler, S. Schmidt, F. Hübner, Babak Bazrafshan, T. Vogl, R. Jakoby
Recent developments on microwave ablation aim to provide a curative intervention instead of being applied as palliative care. For this purpose, information about the temperature development and coagulation status of the targeted tissue during the treatment is needed. This approach is pursued with an advanced ablation applicator that detects relative permittivity changes by applying a one port calibration scheme. Dielectric properties are extracted at the tip of the applicator with air and two NaCl solutions as calibration standards. Measurements with liquid phantoms mimicking the dielectric contrast of tumor and normal tissue exhibit a relative resolution of $Deltavarepsilon_{r}=3.4 %$. Moreover, the ablation performance is evaluated by ablating ex-vivo bovine liver tissue with an input power of 10 W for four minutes. Temperature probes are placed in varied radial distances to monitor the temperature distribution of the ablation zone resulting in a lesion zone of around 2 cm3.
{"title":"Microwave Ablation Applicator with Sensing Capabilities for Thermal Treatment of Malignant Tissue","authors":"C. Reimann, Martin Schülsler, S. Schmidt, F. Hübner, Babak Bazrafshan, T. Vogl, R. Jakoby","doi":"10.1109/MWSYM.2018.8439625","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439625","url":null,"abstract":"Recent developments on microwave ablation aim to provide a curative intervention instead of being applied as palliative care. For this purpose, information about the temperature development and coagulation status of the targeted tissue during the treatment is needed. This approach is pursued with an advanced ablation applicator that detects relative permittivity changes by applying a one port calibration scheme. Dielectric properties are extracted at the tip of the applicator with air and two NaCl solutions as calibration standards. Measurements with liquid phantoms mimicking the dielectric contrast of tumor and normal tissue exhibit a relative resolution of $Deltavarepsilon_{r}=3.4 %$. Moreover, the ablation performance is evaluated by ablating ex-vivo bovine liver tissue with an input power of 10 W for four minutes. Temperature probes are placed in varied radial distances to monitor the temperature distribution of the ablation zone resulting in a lesion zone of around 2 cm3.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"131 1","pages":"1278-1281"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85633528","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 : 2018-06-01DOI: 10.1109/MWSYM.2018.8439359
Pegah Faridi, P. Prakash
Microwave systems are in clinical use for thermal therapy applications, including: tumor ablation; moderate hyperthermia adjuvant to ionizing radiation therapy and/or chemotherapy; and tissue reshaping. Computational models of microwave heating play an important role in the design and optimization of novel devices and comparative assessment of energy delivery strategies, and are under development for patient-specific treatment planning. Experimental characterization of microwave thermal therapy models is often limited to comparison of simulated temperature profiles against transient temperature profiles measured at a few discrete locations with point temperature sensors. Here, we present an experimental platform integrating a microwave thermal therapy system with 14.1 T high-field MRI for validation of computational models of microwave tissue heating. For 15–30 W microwave exposure over 5 min, maximum discrepancy between simulations and experiment was 1.1 °C; maximum discrepancy in simulated and measured depth and width of the heated zone were 1.4 mm and 0.3mm, respectively.
{"title":"Experimental Validation of Computational Models of Microwave Tissue Heating with Magnetic Resonance Thermometry","authors":"Pegah Faridi, P. Prakash","doi":"10.1109/MWSYM.2018.8439359","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439359","url":null,"abstract":"Microwave systems are in clinical use for thermal therapy applications, including: tumor ablation; moderate hyperthermia adjuvant to ionizing radiation therapy and/or chemotherapy; and tissue reshaping. Computational models of microwave heating play an important role in the design and optimization of novel devices and comparative assessment of energy delivery strategies, and are under development for patient-specific treatment planning. Experimental characterization of microwave thermal therapy models is often limited to comparison of simulated temperature profiles against transient temperature profiles measured at a few discrete locations with point temperature sensors. Here, we present an experimental platform integrating a microwave thermal therapy system with 14.1 T high-field MRI for validation of computational models of microwave tissue heating. For 15–30 W microwave exposure over 5 min, maximum discrepancy between simulations and experiment was 1.1 °C; maximum discrepancy in simulated and measured depth and width of the heated zone were 1.4 mm and 0.3mm, respectively.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"41 1","pages":"1282-1284"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80859929","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 : 2018-06-01DOI: 10.1109/MWSYM.2018.8439345
Shunli Ma, Fan Ye, Junyan Ren
This brief presents a wideband and high power-added efficiency (PAE) mm-wave injection-locked power amplifier (ILPA). It consists of four channels and each channels has four stages including input buffer, dual injection-locked stages and output driver stage. Due to the proposed dual injection-locked stages, the PA overcomes the narrow bandwidth drawbacks of conventional ILPAs and realize high energy efficiency. The testing chip was fabricated in 65 nm CMOS process in an area of 0.6 mm2, The PA supply voltage is 1 V with the dc power consumption of 91 mW. Measured results show the presented PA achieves bandwidth of 50–110 GHz with a small-signal gain of 20 dB. The 1-dB output power value is 19 dBm with 36% Dower-added efficiency (PAE).
{"title":"A 50–110 GHz Four-Channel Dual Injection Locked Power Amplifier with 36% PAE at 19 dBm Psat Using Self-Start Technique in 65 nm CMOS Process","authors":"Shunli Ma, Fan Ye, Junyan Ren","doi":"10.1109/MWSYM.2018.8439345","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439345","url":null,"abstract":"This brief presents a wideband and high power-added efficiency (PAE) mm-wave injection-locked power amplifier (ILPA). It consists of four channels and each channels has four stages including input buffer, dual injection-locked stages and output driver stage. Due to the proposed dual injection-locked stages, the PA overcomes the narrow bandwidth drawbacks of conventional ILPAs and realize high energy efficiency. The testing chip was fabricated in 65 nm CMOS process in an area of 0.6 mm2, The PA supply voltage is 1 V with the dc power consumption of 91 mW. Measured results show the presented PA achieves bandwidth of 50–110 GHz with a small-signal gain of 20 dB. The 1-dB output power value is 19 dBm with 36% Dower-added efficiency (PAE).","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"33 1","pages":"1449-1452"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81102305","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 : 2018-06-01DOI: 10.1109/MWSYM.2018.8439167
S. Bastioli, R. Snyder, G. Macchiarella
This paper introduces an innovative structure, namely the strongly-coupled resonator triplet (SCRT), which is suitable for the realization of compact pseudoelliptic evanescent mode filters with inline configuration. The SCRT can be seen as the combination of a strongly-coupled resonator pair (SCRP) and a third resonator next to the pair. Compared to the SCRP, which at the passband frequencies generates a pole and a transmission zero, the new SCRT is capable of generating an additional passband pole, thus leading to the design of more compact inline filters. Similarly to the SCRP, the basic structure for filter design purposes is obtained by embedding the SCRT between two outer resonators. The coupling mechanisms and functional properties of this basic structure are explained and validated by the experimental results of a manufactured prototype.
{"title":"The Strongly-Coupled Resonator Triplet","authors":"S. Bastioli, R. Snyder, G. Macchiarella","doi":"10.1109/MWSYM.2018.8439167","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439167","url":null,"abstract":"This paper introduces an innovative structure, namely the strongly-coupled resonator triplet (SCRT), which is suitable for the realization of compact pseudoelliptic evanescent mode filters with inline configuration. The SCRT can be seen as the combination of a strongly-coupled resonator pair (SCRP) and a third resonator next to the pair. Compared to the SCRP, which at the passband frequencies generates a pole and a transmission zero, the new SCRT is capable of generating an additional passband pole, thus leading to the design of more compact inline filters. Similarly to the SCRP, the basic structure for filter design purposes is obtained by embedding the SCRT between two outer resonators. The coupling mechanisms and functional properties of this basic structure are explained and validated by the experimental results of a manufactured prototype.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"30 1","pages":"1242-1244"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81218084","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 : 2018-06-01DOI: 10.1109/MWSYM.2018.8439564
M. Zarifi
This work presents a novel approach to enhance the sensitivity and selectivity of coupled microwave ring resonator sensors. The presented technique benefits from materials' mass and dielectric properties, to achieve 100% improvement in sensitivity compared to conventional coupled/RFID planar microwave resonator sensors. The sensor structure integrates a cantilever sensor and a planar microwave resonator sensor, which operates at 2~3 GHz and has physical size scalability potential to enable sensitive detections in small-scale applications.
{"title":"Sensitivity and Selectivity Enhancement in Coupling Ring Resonator Sensors Using Splitting Resonant Frequencies","authors":"M. Zarifi","doi":"10.1109/MWSYM.2018.8439564","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439564","url":null,"abstract":"This work presents a novel approach to enhance the sensitivity and selectivity of coupled microwave ring resonator sensors. The presented technique benefits from materials' mass and dielectric properties, to achieve 100% improvement in sensitivity compared to conventional coupled/RFID planar microwave resonator sensors. The sensor structure integrates a cantilever sensor and a planar microwave resonator sensor, which operates at 2~3 GHz and has physical size scalability potential to enable sensitive detections in small-scale applications.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"55 2 1","pages":"36-39"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81250563","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 : 2018-06-01DOI: 10.1109/MWSYM.2018.8439282
Jiaqing Lu, Jin-Fa Lee
This paper introduces a finite element based embedded domain decomposition method (DDM) for time-harmonic Maxwell's equations. In the method, we decompose a computational domain into a background subdomain and several embedded subdomains. Information exchange between the subdomains are addressed in their shared regions, including four ingredients: field continuity, material difference, perfect electrical conductor (PEC), and port. The proposed method allows for completely nonconformal subdomains, thus offering great flexibility for electromagnetic modeling and design.
{"title":"An Embedded Domain Decomposition Method for Time-Harmonic Electromagnetic Problems","authors":"Jiaqing Lu, Jin-Fa Lee","doi":"10.1109/MWSYM.2018.8439282","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439282","url":null,"abstract":"This paper introduces a finite element based embedded domain decomposition method (DDM) for time-harmonic Maxwell's equations. In the method, we decompose a computational domain into a background subdomain and several embedded subdomains. Information exchange between the subdomains are addressed in their shared regions, including four ingredients: field continuity, material difference, perfect electrical conductor (PEC), and port. The proposed method allows for completely nonconformal subdomains, thus offering great flexibility for electromagnetic modeling and design.","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"45 1","pages":"216-219"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78566910","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 : 2018-06-01DOI: 10.1109/MWSYM.2018.8439411
Ahmad Haidar, H. Ezzeddine, J. Sence, O. Tantot, S. Bila
In this paper, the design of a sixth-order dualband bandpass filter with dispersive cross-couplings for improved selectivity is presented. The dispersive coupling element can provide a positive or negative value, depending on its shape, for generating an additional transmission zero in the upper or lower stopband. The dispersive elements with positive and negative values are presented and the proposed approach is verified by the design and the fabrication of a prototype of the multiband filter in the X band. Index Terms- Filter synthesis, microwave filter, dispersive coupling, multiband filter
{"title":"Multiband Filters with Positive or Negative Dispersive Cross-Couplings","authors":"Ahmad Haidar, H. Ezzeddine, J. Sence, O. Tantot, S. Bila","doi":"10.1109/MWSYM.2018.8439411","DOIUrl":"https://doi.org/10.1109/MWSYM.2018.8439411","url":null,"abstract":"In this paper, the design of a sixth-order dualband bandpass filter with dispersive cross-couplings for improved selectivity is presented. The dispersive coupling element can provide a positive or negative value, depending on its shape, for generating an additional transmission zero in the upper or lower stopband. The dispersive elements with positive and negative values are presented and the proposed approach is verified by the design and the fabrication of a prototype of the multiband filter in the X band. Index Terms- Filter synthesis, microwave filter, dispersive coupling, multiband filter","PeriodicalId":6675,"journal":{"name":"2018 IEEE/MTT-S International Microwave Symposium - IMS","volume":"23 1","pages":"1083-1086"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84114835","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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