Pub Date : 2011-06-05DOI: 10.1109/MWSYM.2011.5972619
Y. Uemichi, H. Hatakeyama, T. Aizawa, K. Okada, H. Kiumarsi, S. Tanoi, N. Ishihara, K. Masu
We designed and fabricated low-loss and compact microstrip line and Marchand balun composed of thick Cu and thick resin on Si substrate for millimeter-wave applications. An attenuation constant α and Q of the fabricated microstrip line are 0.17 dB/mm and 52 at 60GHz, respectively. The insertion loss and the core size of the fabricated balun are 0.6 dB at 60 GHz and 300 µm × 450 µm, respectively, which are the lowest and the smallest among the millimeter-wave baluns ever reported, to our knowledge.
{"title":"Low-loss and compact millimeter-wave balun on Si","authors":"Y. Uemichi, H. Hatakeyama, T. Aizawa, K. Okada, H. Kiumarsi, S. Tanoi, N. Ishihara, K. Masu","doi":"10.1109/MWSYM.2011.5972619","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972619","url":null,"abstract":"We designed and fabricated low-loss and compact microstrip line and Marchand balun composed of thick Cu and thick resin on Si substrate for millimeter-wave applications. An attenuation constant α and Q of the fabricated microstrip line are 0.17 dB/mm and 52 at 60GHz, respectively. The insertion loss and the core size of the fabricated balun are 0.6 dB at 60 GHz and 300 µm × 450 µm, respectively, which are the lowest and the smallest among the millimeter-wave baluns ever reported, to our knowledge.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131593526","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972564
M. van der Heijden, M. Acar, Jan S. Vromans, D. A. Calvillo-Cortes
A class-E Chireix outphasing power amplifier is presented that enables high efficiency across a wide power back-off range and RF bandwidth. In this design the Chireix compensation elements and class-E loading conditions are provided by an asymmetric coupled-line power combiner. The class-E operated GaN HEMT switches are driven by high-speed, high-voltage CMOS drivers, implemented in a standard 65nm process technology. The proposed concept demonstrates 51.6% system average power efficiency and 65.1% average drain efficiency for a 7.5dB PAR WCDMA signal at 1.95GHz, while meeting the ACLR specifications. Moreover, the PA demonstrated more than 60% drain efficiency across a 6dB power back-off range and up to 19W peak power between 1800–2050MHz.
提出了一种e类Chireix型共相功率放大器，该放大器在较宽的功率回退范围和射频带宽下具有较高的效率。在本设计中，Chireix补偿元件和e类负载条件由非对称耦合线功率合成器提供。e级操作GaN HEMT开关由高速高压CMOS驱动器驱动，采用标准65nm工艺技术实现。提出的概念在1.95GHz的7.5dB PAR WCDMA信号下，系统平均功率效率为51.6%，平均漏极效率为65.1%，同时满足ACLR规范。此外，在1800-2050MHz之间的6dB功率回退范围内，PA的漏极效率超过60%，峰值功率高达19W。
{"title":"A 19W high-efficiency wide-band CMOS-GaN class-E Chireix RF outphasing power amplifier","authors":"M. van der Heijden, M. Acar, Jan S. Vromans, D. A. Calvillo-Cortes","doi":"10.1109/MWSYM.2011.5972564","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972564","url":null,"abstract":"A class-E Chireix outphasing power amplifier is presented that enables high efficiency across a wide power back-off range and RF bandwidth. In this design the Chireix compensation elements and class-E loading conditions are provided by an asymmetric coupled-line power combiner. The class-E operated GaN HEMT switches are driven by high-speed, high-voltage CMOS drivers, implemented in a standard 65nm process technology. The proposed concept demonstrates 51.6% system average power efficiency and 65.1% average drain efficiency for a 7.5dB PAR WCDMA signal at 1.95GHz, while meeting the ACLR specifications. Moreover, the PA demonstrated more than 60% drain efficiency across a 6dB power back-off range and up to 19W peak power between 1800–2050MHz.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134445948","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972963
A. Georgiadis, A. Collado, S. Via, Cesar Meneses
A flexible electromagnetic (EM) / solar energy harvester is proposed that finds application in low power energy autonomous wireless sensor networks and RFID-enabled sensors. A low cost, compact and conformal harvester is implemented on a flexible polyester (PET) substrate combining a rectenna for EM harvesting and a flexible amorphous silicon solar cell for solar energy harvesting. A compact design is achieved by placing the solar cell on top of the radiating element. A coplanar UWB monopole antenna is designed and a rectifying network is optimized using harmonic balance in order to maximize the rectenna efficiency for low power electromagnetic signals in the GSM-850 and GSM-1900 frequency bands. The solar cell is integrated on the surface of the UWB antenna and electromagnetic simulation is used to optimize its location and the required DC interconnects in order to minimize the performance degradation of the antenna. Measured results of the performance of the hybrid energy harvester are presented showing good agreement with simulation.
{"title":"Flexible hybrid solar/EM energy harvester for autonomous sensors","authors":"A. Georgiadis, A. Collado, S. Via, Cesar Meneses","doi":"10.1109/MWSYM.2011.5972963","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972963","url":null,"abstract":"A flexible electromagnetic (EM) / solar energy harvester is proposed that finds application in low power energy autonomous wireless sensor networks and RFID-enabled sensors. A low cost, compact and conformal harvester is implemented on a flexible polyester (PET) substrate combining a rectenna for EM harvesting and a flexible amorphous silicon solar cell for solar energy harvesting. A compact design is achieved by placing the solar cell on top of the radiating element. A coplanar UWB monopole antenna is designed and a rectifying network is optimized using harmonic balance in order to maximize the rectenna efficiency for low power electromagnetic signals in the GSM-850 and GSM-1900 frequency bands. The solar cell is integrated on the surface of the UWB antenna and electromagnetic simulation is used to optimize its location and the required DC interconnects in order to minimize the performance degradation of the antenna. Measured results of the performance of the hybrid energy harvester are presented showing good agreement with simulation.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134569071","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972695
W. Hong
In this paper, the history of millimeter wave and THz research and applications in China and the current projects supported by China government related to millimeter wave and THz communications are briefly reviewed, some typical achievements in millimeter wave and THz components, systems and integrated circuits from some universities and institutes in China are introduced.
{"title":"Millimeter wave and THz communications in China","authors":"W. Hong","doi":"10.1109/MWSYM.2011.5972695","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972695","url":null,"abstract":"In this paper, the history of millimeter wave and THz research and applications in China and the current projects supported by China government related to millimeter wave and THz communications are briefly reviewed, some typical achievements in millimeter wave and THz components, systems and integrated circuits from some universities and institutes in China are introduced.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134604266","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972892
B. Lacroix, J. Papapolymerou
This paper presents the design, fabrication and measurements of a low-loss and compact triple-mode ring resonator filter operating at X-band. This filter is fabricated on a 635-µm thick duroid substrate (εr = 10.2, tan δ = 0.0023). A classical ring resonator topology with a perturbation allows the first mode to split into two degenerate modes while an additional serpentine line in the middle of the ring which also includes a perturbation and a coupling line creates a third mode whose resonance frequency can be tuned towards the two first mode resonances. Therefore, a third-order response filter is achieved. This filter exhibits insertion loss of 1.67–2.07 dB in the [9.5–10.5] GHz frequency range while return loss is better than 14.7 dB. The 1-dB fractional bandwidth is 13.2%. The presented topology allows a footprint size reduction compared to standard filter topologies.
本文介绍了一种工作在x波段的低损耗紧凑型三模环形谐振器滤波器的设计、制作和测量。该滤波器制作在635µm厚的硬质合金衬底上(εr = 10.2, tan δ = 0.0023)。具有微扰的经典环谐振器拓扑允许第一模分裂为两个简并模，而环中间的附加蛇形线也包括微扰和耦合线创建第三模，其共振频率可以调谐到两个第一模共振。因此，实现了三阶响应滤波器。该滤波器在[9.5-10.5]GHz频率范围内的插入损耗为1.67-2.07 dB，而回波损耗优于14.7 dB。1db分数带宽为13.2%。与标准过滤器拓扑相比，所提供的拓扑允许减少内存占用大小。
{"title":"A triple-mode X-band microstrip ring resonator filter","authors":"B. Lacroix, J. Papapolymerou","doi":"10.1109/MWSYM.2011.5972892","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972892","url":null,"abstract":"This paper presents the design, fabrication and measurements of a low-loss and compact triple-mode ring resonator filter operating at X-band. This filter is fabricated on a 635-µm thick duroid substrate (εr = 10.2, tan δ = 0.0023). A classical ring resonator topology with a perturbation allows the first mode to split into two degenerate modes while an additional serpentine line in the middle of the ring which also includes a perturbation and a coupling line creates a third mode whose resonance frequency can be tuned towards the two first mode resonances. Therefore, a third-order response filter is achieved. This filter exhibits insertion loss of 1.67–2.07 dB in the [9.5–10.5] GHz frequency range while return loss is better than 14.7 dB. The 1-dB fractional bandwidth is 13.2%. The presented topology allows a footprint size reduction compared to standard filter topologies.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133061774","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972768
Wei Wang, G. Fischer, Leon van den Oever, C. Korden, R. Weigel
A new linear tapered diplexing power distributed amplifier (DA) based on composite right left handed transmission line (CRLH-TL) has been proposed and implemented. According to the input frequency, the amplified signal is directed to one of the two output ports automatically. The linearity requirement of UMTS and WLAN can be satisfied until different power level, respectively. Furthermore, this circuit is capable of simultaneous amplification of 2 modulated signals, which enables load balancing and spectrum aggregation techniques.
{"title":"Linear tapered diplexing distributed power amplifier for mobile phone application","authors":"Wei Wang, G. Fischer, Leon van den Oever, C. Korden, R. Weigel","doi":"10.1109/MWSYM.2011.5972768","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972768","url":null,"abstract":"A new linear tapered diplexing power distributed amplifier (DA) based on composite right left handed transmission line (CRLH-TL) has been proposed and implemented. According to the input frequency, the amplified signal is directed to one of the two output ports automatically. The linearity requirement of UMTS and WLAN can be satisfied until different power level, respectively. Furthermore, this circuit is capable of simultaneous amplification of 2 modulated signals, which enables load balancing and spectrum aggregation techniques.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133809843","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972797
B. Salski, M. Celuch
This paper responds to the recent needs of the industrial microwave power community for homogenized models of bi-phased mixtures, compatible with the FDTD electromagnetic simulation method. We propose an explicit transformation of the Maxwell-Garnett mixing rule to the Debye relaxation formula. For that purpose, both models are rearranged into rational functions, and the conditions for their equivalence are derived. These explicitly provide the Debye parameters as a function of the polynomial coefficients of the Maxwell-Garnett formula. Computational examples show the accuracy of our approach, its advantages over alternative Debye-approximation methods based on curve-fitting algorithms, and its contribution to the developments of the FDTD modeling for microwave power applications.
{"title":"The debye rigorous equivalent of the Maxwell-Garnett mixing rule for effective modeling of carbon suspensions under MW irradiation","authors":"B. Salski, M. Celuch","doi":"10.1109/MWSYM.2011.5972797","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972797","url":null,"abstract":"This paper responds to the recent needs of the industrial microwave power community for homogenized models of bi-phased mixtures, compatible with the FDTD electromagnetic simulation method. We propose an explicit transformation of the Maxwell-Garnett mixing rule to the Debye relaxation formula. For that purpose, both models are rearranged into rational functions, and the conditions for their equivalence are derived. These explicitly provide the Debye parameters as a function of the polynomial coefficients of the Maxwell-Garnett formula. Computational examples show the accuracy of our approach, its advantages over alternative Debye-approximation methods based on curve-fitting algorithms, and its contribution to the developments of the FDTD modeling for microwave power applications.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125603661","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972903
A. Elzayat, A. Kouki
Duplexers are essential circuit elements in virtually all Frequency Division Duplex (FDD) communication systems. Duplexers provide filtering functions for transmission and reception bands; moreover they provide isolation. In this work we present a novel duplexer architecture that provides increased isolation without increasing the constituting filters order. Among the advantages of this novel technique is the reduction of filter complexity, a 3-dB reduction in filter power handling capacity and improved isolation bandwidth. Two duplexers have been designed, fabricated and characterized. A UMTS duplexer was designed fabricated on RO5870 substrate. Another duplexer in 5.1GHz–5.8GHz band was designed and fabricated on Alumina substrate. The results obtained by measurements validated the utility of the architecture in enhancing the Transmitter-Receiver isolation by 15dB–20dB over nearly the full band of the filters in both designs.
{"title":"Tx/Rx isolation enhancement based on a novel Balanced Duplexer architecture","authors":"A. Elzayat, A. Kouki","doi":"10.1109/MWSYM.2011.5972903","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972903","url":null,"abstract":"Duplexers are essential circuit elements in virtually all Frequency Division Duplex (FDD) communication systems. Duplexers provide filtering functions for transmission and reception bands; moreover they provide isolation. In this work we present a novel duplexer architecture that provides increased isolation without increasing the constituting filters order. Among the advantages of this novel technique is the reduction of filter complexity, a 3-dB reduction in filter power handling capacity and improved isolation bandwidth. Two duplexers have been designed, fabricated and characterized. A UMTS duplexer was designed fabricated on RO5870 substrate. Another duplexer in 5.1GHz–5.8GHz band was designed and fabricated on Alumina substrate. The results obtained by measurements validated the utility of the architecture in enhancing the Transmitter-Receiver isolation by 15dB–20dB over nearly the full band of the filters in both designs.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131741847","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972663
T. Ueda, G. Haida, Y. Kado, T. Itoh
Polarization-controllable zeroth-order-resonator antenna with reactance loads at both ends is proposed and demonstrated. The zeroth-order resonator antenna is composed of a microstrip-line-based composite right/left handed transmission line with reactive loads. The impedance of one load is the complex conjugate of another. By changing the end condition under the resonance, superposition of energies of dual resonances in series and shunt branches of the unit cell can be simultaneously and arbitrarily controlled. When the center microstrip line is perpendicular to the stubs, the polarization of radiation fields from the center microstrip line is orthogonal to that from stubs. By changing the terminating condition, we can continuously rotate the co-polarization direction of the linearly-polarized radiation. The numerical and experimental results verified the basic concept.
{"title":"Polarization-controllable zeroth-order-resonator antennas with reactance loads at both ends","authors":"T. Ueda, G. Haida, Y. Kado, T. Itoh","doi":"10.1109/MWSYM.2011.5972663","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972663","url":null,"abstract":"Polarization-controllable zeroth-order-resonator antenna with reactance loads at both ends is proposed and demonstrated. The zeroth-order resonator antenna is composed of a microstrip-line-based composite right/left handed transmission line with reactive loads. The impedance of one load is the complex conjugate of another. By changing the end condition under the resonance, superposition of energies of dual resonances in series and shunt branches of the unit cell can be simultaneously and arbitrarily controlled. When the center microstrip line is perpendicular to the stubs, the polarization of radiation fields from the center microstrip line is orthogonal to that from stubs. By changing the terminating condition, we can continuously rotate the co-polarization direction of the linearly-polarized radiation. The numerical and experimental results verified the basic concept.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134305079","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 : 2011-06-05DOI: 10.1109/MWSYM.2011.5972621
Y. Hor, R. Hegde, E. Li, W. Hoefer
Sub-wavelength imaging involves the interaction of electromagnetic fields with objects that have dimensions of the order of the wavelength. This is characteristic of microwave technology and thus calls for tools and concepts familiar to microwave engineers. We analyze the plasmonic surface modes of the superlens and their excitation by the evanescent modes of the object field using a waveguide model. The resolution of the superlens, determined by the highest spectral component transmitted, is limited by the settling time of the plasmonic response and on the dynamic range of the superresolution system. Other limiting effects, such as losses, are deliberately excluded to highlight the above phenomena.
{"title":"Transient study of the dynamic response of the veselago-pendry superlens","authors":"Y. Hor, R. Hegde, E. Li, W. Hoefer","doi":"10.1109/MWSYM.2011.5972621","DOIUrl":"https://doi.org/10.1109/MWSYM.2011.5972621","url":null,"abstract":"Sub-wavelength imaging involves the interaction of electromagnetic fields with objects that have dimensions of the order of the wavelength. This is characteristic of microwave technology and thus calls for tools and concepts familiar to microwave engineers. We analyze the plasmonic surface modes of the superlens and their excitation by the evanescent modes of the object field using a waveguide model. The resolution of the superlens, determined by the highest spectral component transmitted, is limited by the settling time of the plasmonic response and on the dynamic range of the superresolution system. Other limiting effects, such as losses, are deliberately excluded to highlight the above phenomena.","PeriodicalId":294862,"journal":{"name":"2011 IEEE MTT-S International Microwave Symposium","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129149707","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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