Pub Date : 2020-07-05DOI: 10.1109/IEEECONF35879.2020.9330440
F. Vega, F. Albarracin-Vargas, C. Kasmi, Fahad Alyafei
This work presents a preliminary design for a high-power, tunable resonant radiator. The device is composed of an Impulse Radiating Antenna integrated with a tunable Frequency Selective Surface (FSS) in the UHF band. By changing the separation between the components of the unit cells, a passband FSS with a tunability of around 300 MHz is obtained. The device can be used as a source for IEMI/EMC testing.
{"title":"Passband Tunable Frequency Selective Surface for a Pulsed Radiator","authors":"F. Vega, F. Albarracin-Vargas, C. Kasmi, Fahad Alyafei","doi":"10.1109/IEEECONF35879.2020.9330440","DOIUrl":"https://doi.org/10.1109/IEEECONF35879.2020.9330440","url":null,"abstract":"This work presents a preliminary design for a high-power, tunable resonant radiator. The device is composed of an Impulse Radiating Antenna integrated with a tunable Frequency Selective Surface (FSS) in the UHF band. By changing the separation between the components of the unit cells, a passband FSS with a tunability of around 300 MHz is obtained. The device can be used as a source for IEMI/EMC testing.","PeriodicalId":135770,"journal":{"name":"2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114389819","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 : 2020-07-05DOI: 10.1109/IEEECONF35879.2020.9329488
K. Alsirhani, K. Abdalmalak, C. S. Lee, G. Santamaría-Botello, D. Segovia-Vargas, L. García-Muñoz
The design of a rectangular dielectric resonator antenna (RDRA) for 5G millimeter-wave (mm-wave) applications is presented. The design consists of a rectangular dielectric resonator placed at the top of a rectangular dielectric rod waveguide (RDRW) to eliminate loss from metallic parts used to feed the DRA. The antenna is fed by a metallic waveguide (WR-34) that operates in the range of 22 to 33 GHz. The structural design and simulation results are shown in this paper.
{"title":"Dielectric Resonator Antenna Fed by Tapered Dielectric Rod Waveguide for 5G mm-Wave Applications","authors":"K. Alsirhani, K. Abdalmalak, C. S. Lee, G. Santamaría-Botello, D. Segovia-Vargas, L. García-Muñoz","doi":"10.1109/IEEECONF35879.2020.9329488","DOIUrl":"https://doi.org/10.1109/IEEECONF35879.2020.9329488","url":null,"abstract":"The design of a rectangular dielectric resonator antenna (RDRA) for 5G millimeter-wave (mm-wave) applications is presented. The design consists of a rectangular dielectric resonator placed at the top of a rectangular dielectric rod waveguide (RDRW) to eliminate loss from metallic parts used to feed the DRA. The antenna is fed by a metallic waveguide (WR-34) that operates in the range of 22 to 33 GHz. The structural design and simulation results are shown in this paper.","PeriodicalId":135770,"journal":{"name":"2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114417621","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 : 2020-07-05DOI: 10.1109/IEEECONF35879.2020.9330445
Tanny Chavez, Nagma Vohra, Jingxian Wu, M. El-Shenawee, Keith Bailey
This paper proposes a new spatial image segmentation algorithm for breast cancer detection in terahertz (THz) images of freshly excised human tumors. Region classifications of fresh tissue with 3 or more regions, such as cancer, fat, and collagen, remain a challenge for cancer detection. We propose to tackle this problem by exploiting the spatial correlation among neighboring pixels in THz images, that is, pixels that are close to each other are more likely to belong to the same region. The spatial correlation among pixels is modeled by using Markov random fields (MRF). A Gaussian mixture model (GMM) with expectation maximization (EM) is then used to represent the statistical distributions of the THz images in both the frequency and spatial domain. Experiment results demonstrated that the proposed spatial image segmentation algorithm outperforms existing algorithms that do not consider spatial information.
{"title":"Spatial Image Segmentation for Breast Cancer Detection in Terahertz Imaging","authors":"Tanny Chavez, Nagma Vohra, Jingxian Wu, M. El-Shenawee, Keith Bailey","doi":"10.1109/IEEECONF35879.2020.9330445","DOIUrl":"https://doi.org/10.1109/IEEECONF35879.2020.9330445","url":null,"abstract":"This paper proposes a new spatial image segmentation algorithm for breast cancer detection in terahertz (THz) images of freshly excised human tumors. Region classifications of fresh tissue with 3 or more regions, such as cancer, fat, and collagen, remain a challenge for cancer detection. We propose to tackle this problem by exploiting the spatial correlation among neighboring pixels in THz images, that is, pixels that are close to each other are more likely to belong to the same region. The spatial correlation among pixels is modeled by using Markov random fields (MRF). A Gaussian mixture model (GMM) with expectation maximization (EM) is then used to represent the statistical distributions of the THz images in both the frequency and spatial domain. Experiment results demonstrated that the proposed spatial image segmentation algorithm outperforms existing algorithms that do not consider spatial information.","PeriodicalId":135770,"journal":{"name":"2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114470257","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 : 2020-07-05DOI: 10.1109/IEEECONF35879.2020.9330371
Masaud Shah, H. M. Cheema
Ahstract-This paper presents a microstrip fed, double differential antenna based on substrate integrated waveguide (SIW) technology for In-Band Full Duplex communication at 28 GHz. Using higher order TE201 mode of the SIW cavity and differential port excitations, the proposed antenna achieves a self-interference cancellation of better than -77 dB over a 210 MHz bandwidth and a high gain of 8.2 dBi. Occupying a miniaturized size of $7.56 times 7.56 mathrm{mm}^{2}$, the antenna features a radiation efficiency of 77% and front to back ratio of 19 dB.
摘要:提出了一种基于衬底集成波导(SIW)技术的28ghz带内全双工通信微带馈电双差分天线。采用SIW腔高阶TE201模式和差分端口激励，在210 MHz带宽和8.2 dBi的高增益下实现了优于-77 dB的自干扰消除。该天线的小型化尺寸为7.56 × 7.56 math {mm}^{2}$，辐射效率为77%，前后比为19 dB。
{"title":"SIW Antenna for 5G In-Band Full Duplex Applications","authors":"Masaud Shah, H. M. Cheema","doi":"10.1109/IEEECONF35879.2020.9330371","DOIUrl":"https://doi.org/10.1109/IEEECONF35879.2020.9330371","url":null,"abstract":"Ahstract-This paper presents a microstrip fed, double differential antenna based on substrate integrated waveguide (SIW) technology for In-Band Full Duplex communication at 28 GHz. Using higher order TE201 mode of the SIW cavity and differential port excitations, the proposed antenna achieves a self-interference cancellation of better than -77 dB over a 210 MHz bandwidth and a high gain of 8.2 dBi. Occupying a miniaturized size of $7.56 times 7.56 mathrm{mm}^{2}$, the antenna features a radiation efficiency of 77% and front to back ratio of 19 dB.","PeriodicalId":135770,"journal":{"name":"2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114519350","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 : 2020-07-05DOI: 10.1109/IEEECONF35879.2020.9329544
S. Clemens, M. Iskander, Z. Yun, Gui Chao
Genetic programming (GP) is developed to design an antenna array with new topologies resulting in improved performance. Three elements of a coplanar waveguide continuous transverse stub (CPW-CTS) antenna are synthesized and optimized by GP. These antenna elements are placed in series to create a 3-element frequency scanning linear array. The fitness function used to design the CPW-CTS elements accounts for impedance bandwidth, radiation pattern, cross polarization, and transmission coefficient. Simulation results are verified experimentally. The GP designed CPW-CTS antenna array was able to achieve nearly 4 times the bandwidth of a conventional CPW-CTS array design. The GP designed array maintains the array's gain when compared with the published CPW-CTS antenna array design.
{"title":"Genetic Programming for Coplanar Waveguide Continuous Transverse Stub Antenna Array Design","authors":"S. Clemens, M. Iskander, Z. Yun, Gui Chao","doi":"10.1109/IEEECONF35879.2020.9329544","DOIUrl":"https://doi.org/10.1109/IEEECONF35879.2020.9329544","url":null,"abstract":"Genetic programming (GP) is developed to design an antenna array with new topologies resulting in improved performance. Three elements of a coplanar waveguide continuous transverse stub (CPW-CTS) antenna are synthesized and optimized by GP. These antenna elements are placed in series to create a 3-element frequency scanning linear array. The fitness function used to design the CPW-CTS elements accounts for impedance bandwidth, radiation pattern, cross polarization, and transmission coefficient. Simulation results are verified experimentally. The GP designed CPW-CTS antenna array was able to achieve nearly 4 times the bandwidth of a conventional CPW-CTS array design. The GP designed array maintains the array's gain when compared with the published CPW-CTS antenna array design.","PeriodicalId":135770,"journal":{"name":"2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117305761","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 : 2020-07-05DOI: 10.1109/IEEECONF35879.2020.9330201
A. A. Baba, R. Hashmi, K. Esselle, M. Attygalle
This paper presents the performance of an optimized wideband beam-steering antenna system for mm-wave applications. The antenna is passive and can provide continuous two-dimensional beam scanning up to $pm mathbf{40}^{mathbf{o}}$ away from broadside direction in elevation and any direction in azimuth. It uses a pair of near-field dielectric phase transformers, inspired from optical prisms, introducing a pre-determined phase gradient to the incoming wave front from a source antenna, and redirecting the radiated beam to specified direction with in a conical region with an apex angle of 80°. A prototype of the antenna system along with the mounting structure has been fabricated and tested.
{"title":"A Wideband Wide-Angle Beam-Steering System for Millimeter-wave Applications","authors":"A. A. Baba, R. Hashmi, K. Esselle, M. Attygalle","doi":"10.1109/IEEECONF35879.2020.9330201","DOIUrl":"https://doi.org/10.1109/IEEECONF35879.2020.9330201","url":null,"abstract":"This paper presents the performance of an optimized wideband beam-steering antenna system for mm-wave applications. The antenna is passive and can provide continuous two-dimensional beam scanning up to $pm mathbf{40}^{mathbf{o}}$ away from broadside direction in elevation and any direction in azimuth. It uses a pair of near-field dielectric phase transformers, inspired from optical prisms, introducing a pre-determined phase gradient to the incoming wave front from a source antenna, and redirecting the radiated beam to specified direction with in a conical region with an apex angle of 80°. A prototype of the antenna system along with the mounting structure has been fabricated and tested.","PeriodicalId":135770,"journal":{"name":"2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129415641","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 : 2020-07-05DOI: 10.1109/IEEECONF35879.2020.9329489
Anamika Verma, Mahima Arrawatia, G. Kumar
In this paper a broadband series-fed circularly polarized microstrip antenna array is proposed. The series fed array consists of four sequentially rotated circular micro-strip antenna connected to a circularly polarized patch antenna. The center patch is fed by two orthogonal L-probes with 90° phase shift between them. In addition, four sequentially rotated parasitic patches which resonates at higher frequency band are coupled to the center patch. The parasitic patch improves the axial ratio and gain of the antenna at higher frequency band. The $vert mathrm{S}_{11}vert < -10 text{dB}$ impedance bandwidth of the antenna is from 3.77-6.30 GHz (50.2%). The axial ratio <3 dB bandwidth of the antenna is from 3.77-5.85 GHz (43.2%). The maximum gain of the series-fed CP antenna array is 12.1 dBi.
{"title":"Broadband Series-fed Circularly Polarized Microstrip Antenna Array","authors":"Anamika Verma, Mahima Arrawatia, G. Kumar","doi":"10.1109/IEEECONF35879.2020.9329489","DOIUrl":"https://doi.org/10.1109/IEEECONF35879.2020.9329489","url":null,"abstract":"In this paper a broadband series-fed circularly polarized microstrip antenna array is proposed. The series fed array consists of four sequentially rotated circular micro-strip antenna connected to a circularly polarized patch antenna. The center patch is fed by two orthogonal L-probes with 90° phase shift between them. In addition, four sequentially rotated parasitic patches which resonates at higher frequency band are coupled to the center patch. The parasitic patch improves the axial ratio and gain of the antenna at higher frequency band. The $vert mathrm{S}_{11}vert < -10 text{dB}$ impedance bandwidth of the antenna is from 3.77-6.30 GHz (50.2%). The axial ratio <3 dB bandwidth of the antenna is from 3.77-5.85 GHz (43.2%). The maximum gain of the series-fed CP antenna array is 12.1 dBi.","PeriodicalId":135770,"journal":{"name":"2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129794577","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 : 2020-07-05DOI: 10.1109/IEEECONF35879.2020.9330195
U. Ullah, I. Mabrouk, Mu’ath Al-Hasan, S. Koziel
A simple-topology circularly polarized (CP) multiple-input-multiple-output (MIMO) antenna with polarization diversity is presented. The proposed design comprises two parallel placed coplanar waveguide (CPW)-fed antennas with the opposite senses of polarization. Circular polarization is induced in the antenna by simple geometrical modification of the conducting coplanar ground planes on the right/left side of the microstrip transmission line. To achieve polarization diversity, the left-hand and right-hand CP is realized by simply switching the positions of the ground plane with respect to the microstrip line monopole. Owing to this configuration, the proposed antenna features a wide impedance bandwidth $(vert mathbf{S11}vertleqslant-mathbf{10 dB})$ and axial ratio (AR) bandwidth from 5.2 GHz to 6.3 GHz along with high isolation of $vert mathbf{S21}vertleqslant-mathbf{20 dB}$ in the entire operating frequency range. The peak realized gain of the antenna is 5.8 dBic, the envelope correlation coefficient (ECC) is less than 0.004 with the maximum diversity gain (DG) of approximately 9.99 dB.
{"title":"On the Design of Circularly Polarized MIMO Antenna with Polarization Diversity","authors":"U. Ullah, I. Mabrouk, Mu’ath Al-Hasan, S. Koziel","doi":"10.1109/IEEECONF35879.2020.9330195","DOIUrl":"https://doi.org/10.1109/IEEECONF35879.2020.9330195","url":null,"abstract":"A simple-topology circularly polarized (CP) multiple-input-multiple-output (MIMO) antenna with polarization diversity is presented. The proposed design comprises two parallel placed coplanar waveguide (CPW)-fed antennas with the opposite senses of polarization. Circular polarization is induced in the antenna by simple geometrical modification of the conducting coplanar ground planes on the right/left side of the microstrip transmission line. To achieve polarization diversity, the left-hand and right-hand CP is realized by simply switching the positions of the ground plane with respect to the microstrip line monopole. Owing to this configuration, the proposed antenna features a wide impedance bandwidth $(vert mathbf{S11}vertleqslant-mathbf{10 dB})$ and axial ratio (AR) bandwidth from 5.2 GHz to 6.3 GHz along with high isolation of $vert mathbf{S21}vertleqslant-mathbf{20 dB}$ in the entire operating frequency range. The peak realized gain of the antenna is 5.8 dBic, the envelope correlation coefficient (ECC) is less than 0.004 with the maximum diversity gain (DG) of approximately 9.99 dB.","PeriodicalId":135770,"journal":{"name":"2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129806566","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 : 2020-07-05DOI: 10.1109/IEEECONF35879.2020.9329477
Huan-Chu Huang
The overview of some mm-Wave antenna designs embedded in metal exteriors of cellular phones presents an evolution from the 5th generation mobile communications (5G) single-band single-polarized mm-Wave antennas, dual-band single-polarized mm-Wave antennas, dual-band single-polarized mm-Wave antennas in a non-mm-Wave antenna, dual-band dual-polarized mm-Wave antennas, dual-band dual-polarized mm-Wave antennas in a non-mm-Wave antenna, wideband dual-polarized mm-Wave antennas in a non-mm-Wave antenna, to 60-GHz single-band single-polarized mm-Wave antennas in a non-mm-Wave antenna.
{"title":"Overview of Some mm-Wave Antenna Designs Embedded in Metal Exteriors of Cellular Phones","authors":"Huan-Chu Huang","doi":"10.1109/IEEECONF35879.2020.9329477","DOIUrl":"https://doi.org/10.1109/IEEECONF35879.2020.9329477","url":null,"abstract":"The overview of some mm-Wave antenna designs embedded in metal exteriors of cellular phones presents an evolution from the 5th generation mobile communications (5G) single-band single-polarized mm-Wave antennas, dual-band single-polarized mm-Wave antennas, dual-band single-polarized mm-Wave antennas in a non-mm-Wave antenna, dual-band dual-polarized mm-Wave antennas, dual-band dual-polarized mm-Wave antennas in a non-mm-Wave antenna, wideband dual-polarized mm-Wave antennas in a non-mm-Wave antenna, to 60-GHz single-band single-polarized mm-Wave antennas in a non-mm-Wave antenna.","PeriodicalId":135770,"journal":{"name":"2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128330402","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 : 2020-07-05DOI: 10.1109/IEEECONF35879.2020.9329751
K. Horihata, K. Kanai, Rei Hasegawa, Y. Koyanagi, Y. Ichikawa
Wireless communication is expected to improve the flexibility of equipment layout or of the factory IoT (Internet of Things). In this paper, we show the result of constructing IoT sensor network using LPWA (Low Power Wide Area) in a factory, performing machine learning, and analyzing the correlation between wireless and physical environment. As a result, it has been shown that RSSI (received signal strength indicator) fluctuation of a terminal could be estimated from sensor data that recorded physical environment around the terminal.
{"title":"A Study of Machine Learning Using Wireless and Physical Environment Data at a Factory","authors":"K. Horihata, K. Kanai, Rei Hasegawa, Y. Koyanagi, Y. Ichikawa","doi":"10.1109/IEEECONF35879.2020.9329751","DOIUrl":"https://doi.org/10.1109/IEEECONF35879.2020.9329751","url":null,"abstract":"Wireless communication is expected to improve the flexibility of equipment layout or of the factory IoT (Internet of Things). In this paper, we show the result of constructing IoT sensor network using LPWA (Low Power Wide Area) in a factory, performing machine learning, and analyzing the correlation between wireless and physical environment. As a result, it has been shown that RSSI (received signal strength indicator) fluctuation of a terminal could be estimated from sensor data that recorded physical environment around the terminal.","PeriodicalId":135770,"journal":{"name":"2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128378559","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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