Pub Date : 2021-12-17DOI: 10.1109/imarc49196.2021.9714626
P. Sharma, N. Gupta
In this paper a flexible microstrip antenna of $30.1 mathrm{~mm} times 30.1 mathrm{~mm}$, using Polydimethylsiloxane (PDMS) and Jean substrate is presented for Ultra-wideband (UWB) applications. The presented antenna design consists of a rectangular patch having two staircase steps of size $2 mathrm{~mm} times 2$ mm, with defected ground plane and two rectangular slots of 2 $mathrm{mm} times 4 mathrm{~mm}$ are used to enhance the performance and to give wideband characteristics. The comparative analysis performed on the proposed antenna structure using Jean and PDMS substrates shows that the PDMS can be a good candidate as a substrate for flexible antennas.
{"title":"Design and Analysis of Polydimethylsiloxane (PDMS) and Jean Substrate based Flexible Antenna for Ultra-wideband Applications","authors":"P. Sharma, N. Gupta","doi":"10.1109/imarc49196.2021.9714626","DOIUrl":"https://doi.org/10.1109/imarc49196.2021.9714626","url":null,"abstract":"In this paper a flexible microstrip antenna of $30.1 mathrm{~mm} times 30.1 mathrm{~mm}$, using Polydimethylsiloxane (PDMS) and Jean substrate is presented for Ultra-wideband (UWB) applications. The presented antenna design consists of a rectangular patch having two staircase steps of size $2 mathrm{~mm} times 2$ mm, with defected ground plane and two rectangular slots of 2 $mathrm{mm} times 4 mathrm{~mm}$ are used to enhance the performance and to give wideband characteristics. The comparative analysis performed on the proposed antenna structure using Jean and PDMS substrates shows that the PDMS can be a good candidate as a substrate for flexible antennas.","PeriodicalId":226787,"journal":{"name":"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129910473","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 : 2021-12-17DOI: 10.1109/imarc49196.2021.9714664
Elizabeth George, C. Saha
This article presents a systematic investigation to study the effect of electromagnetic wave propagation on static and dynamic human bodies. Two cross slot antennas of similar type with L = 70 mm, W = 45 mm and h = 1.58 mm are used to study the transmission characteristics around the body and also during double-arm swing activity. A twelve cylinder body model representing the main parts of the body is used for performing the double arm swing activity. The effect of antenna orientation on transmission characteristics is also studied using a four year child model.
{"title":"Investigation of on-Body Creeping Wave Mechanism and Double-Arm Swing Activity for WBAN Applications","authors":"Elizabeth George, C. Saha","doi":"10.1109/imarc49196.2021.9714664","DOIUrl":"https://doi.org/10.1109/imarc49196.2021.9714664","url":null,"abstract":"This article presents a systematic investigation to study the effect of electromagnetic wave propagation on static and dynamic human bodies. Two cross slot antennas of similar type with L = 70 mm, W = 45 mm and h = 1.58 mm are used to study the transmission characteristics around the body and also during double-arm swing activity. A twelve cylinder body model representing the main parts of the body is used for performing the double arm swing activity. The effect of antenna orientation on transmission characteristics is also studied using a four year child model.","PeriodicalId":226787,"journal":{"name":"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130302332","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 : 2021-12-17DOI: 10.1109/IMaRC49196.2021.9714666
Pratik Ghosh, B. Chaudhury
The 2D simulations of HPM breakdown induced plasma formation in the context of applications such as HPM switching and power limiter for protection of electronic components presented. Breakdown thresholds, the field strength and the initial plasma density that determines breakdown time are reported. The dependence of cutoff time on initial plasma as well as strength of microwave E-field are reported. The transmission and rejection capability of plasma for certain frequency is shown. Further, variations in permittivity and conductivity of breakdown plasma also studied. Study also highlights the importance of correct choice of diffusion coefficient in the given fluid-based model.
{"title":"Computational Investigation of Microwave Breakdown in HPM Switching and Protection","authors":"Pratik Ghosh, B. Chaudhury","doi":"10.1109/IMaRC49196.2021.9714666","DOIUrl":"https://doi.org/10.1109/IMaRC49196.2021.9714666","url":null,"abstract":"The 2D simulations of HPM breakdown induced plasma formation in the context of applications such as HPM switching and power limiter for protection of electronic components presented. Breakdown thresholds, the field strength and the initial plasma density that determines breakdown time are reported. The dependence of cutoff time on initial plasma as well as strength of microwave E-field are reported. The transmission and rejection capability of plasma for certain frequency is shown. Further, variations in permittivity and conductivity of breakdown plasma also studied. Study also highlights the importance of correct choice of diffusion coefficient in the given fluid-based model.","PeriodicalId":226787,"journal":{"name":"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130206253","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 : 2021-12-17DOI: 10.1109/imarc49196.2021.9714559
V. S. Bhadouria, Shubhadip Paul, P. Munshi, M. J. Akhtar
Concrete structures with reinforcement have better mechanical capabilities, such as compressive strength, tensile strength, and durability. Reinforced concrete is also low-maintenance, defection-free, fire-resistant, and weather-resistant. This work focuses on the use of the microwave as a low-cost source to investigate flaws in the reinforcement of concrete structures in nuclear industry in a nondestructive manner. The electromagnetic signature encompasses both the reflection and dielectric properties of the test media in the examination of reinforced concrete structures for the first time. A microwave probe as the low cost source antenna, which was created in-house, has been used to measure concrete samples with defected and non-defected reinforcement. The results of the experiments showed that the suggested microwave approach could accurately identify defect geometry and characteristics, and that it could be used in structural health monitoring for preliminary findings.
{"title":"Time-Domain Microwave NDT for Defects in Reinforced Concrete Structures in Nuclear Industry","authors":"V. S. Bhadouria, Shubhadip Paul, P. Munshi, M. J. Akhtar","doi":"10.1109/imarc49196.2021.9714559","DOIUrl":"https://doi.org/10.1109/imarc49196.2021.9714559","url":null,"abstract":"Concrete structures with reinforcement have better mechanical capabilities, such as compressive strength, tensile strength, and durability. Reinforced concrete is also low-maintenance, defection-free, fire-resistant, and weather-resistant. This work focuses on the use of the microwave as a low-cost source to investigate flaws in the reinforcement of concrete structures in nuclear industry in a nondestructive manner. The electromagnetic signature encompasses both the reflection and dielectric properties of the test media in the examination of reinforced concrete structures for the first time. A microwave probe as the low cost source antenna, which was created in-house, has been used to measure concrete samples with defected and non-defected reinforcement. The results of the experiments showed that the suggested microwave approach could accurately identify defect geometry and characteristics, and that it could be used in structural health monitoring for preliminary findings.","PeriodicalId":226787,"journal":{"name":"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121363982","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 : 2021-12-17DOI: 10.1109/IMaRC49196.2021.9714611
Kamlesh Joshi, M. Mandal, P. Mandal
In this work, a design of a wideband differential low-noise amplifier (LNA) is presented for 5G new radio handset receivers. It is shown that a RC feedback instead of the conventional resistive feedback in common-source topology consumes less dc power, maintains low noise Figure and flat gain over a wide frequency band. Further, use of an inter-stage gm boosting inductor and a parallel LC tank circuit at the input side keep other parameters like linearity, absolute gain, input matching and IIP3 comparable to other designs. As an example, a single stage differential LNA is designed in 180 nm C-MOS technology. The LNA provides a flat gain of 13.6 dB over 1.9-4.5GHz. The input reflection remains below -10dB, noise Figure below 2.9dB, reverse isolation over 41 dB over the whole bandwidth. While overall DC power consumption is 10.5mW and IIP3 is -2.5dBm.
{"title":"Design of a Wideband Differential LNA Based In CMOS 180 nm Technology","authors":"Kamlesh Joshi, M. Mandal, P. Mandal","doi":"10.1109/IMaRC49196.2021.9714611","DOIUrl":"https://doi.org/10.1109/IMaRC49196.2021.9714611","url":null,"abstract":"In this work, a design of a wideband differential low-noise amplifier (LNA) is presented for 5G new radio handset receivers. It is shown that a RC feedback instead of the conventional resistive feedback in common-source topology consumes less dc power, maintains low noise Figure and flat gain over a wide frequency band. Further, use of an inter-stage gm boosting inductor and a parallel LC tank circuit at the input side keep other parameters like linearity, absolute gain, input matching and IIP3 comparable to other designs. As an example, a single stage differential LNA is designed in 180 nm C-MOS technology. The LNA provides a flat gain of 13.6 dB over 1.9-4.5GHz. The input reflection remains below -10dB, noise Figure below 2.9dB, reverse isolation over 41 dB over the whole bandwidth. While overall DC power consumption is 10.5mW and IIP3 is -2.5dBm.","PeriodicalId":226787,"journal":{"name":"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117193713","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 : 2021-12-17DOI: 10.1109/imarc49196.2021.9714618
Vishal Kumar Chakradhary, A. Ansari, H. Baskey, M. J. Akhtar
This work, presents investigation of microwave properties of an advanced magneto-dielectric nanocomposite synthesized by dispersing functionalized carbon nano fiber (CNF 0.0,0.5,1 and 2 wt.parcent) along with barium ferrite nanoparticles (50 wt. %) into epoxy polymer matrix. The FESEM image of nanocomposites showed non-uniform distribution of nanofillers in the epoxy matrix. The real and imaginary part of permittivity increases with increase in CNF concentration, without significantly affecting the magnetic permeability of the nanocomposite samples. Among, all nanocomposites, the 50wt.% nanocomposite samples. Among, all nanocomposites, the 50wt.% wide absorption bandwidth (-10 dB) of 2.50GHz at 1.5mm thickness in X-band.
{"title":"Ultrathin and Lightweight Functionalized CNF Mixed Barium Ferrite Nanocomposite for Stealth Applications","authors":"Vishal Kumar Chakradhary, A. Ansari, H. Baskey, M. J. Akhtar","doi":"10.1109/imarc49196.2021.9714618","DOIUrl":"https://doi.org/10.1109/imarc49196.2021.9714618","url":null,"abstract":"This work, presents investigation of microwave properties of an advanced magneto-dielectric nanocomposite synthesized by dispersing functionalized carbon nano fiber (CNF 0.0,0.5,1 and 2 wt.parcent) along with barium ferrite nanoparticles (50 wt. %) into epoxy polymer matrix. The FESEM image of nanocomposites showed non-uniform distribution of nanofillers in the epoxy matrix. The real and imaginary part of permittivity increases with increase in CNF concentration, without significantly affecting the magnetic permeability of the nanocomposite samples. Among, all nanocomposites, the 50wt.% nanocomposite samples. Among, all nanocomposites, the 50wt.% wide absorption bandwidth (-10 dB) of 2.50GHz at 1.5mm thickness in X-band.","PeriodicalId":226787,"journal":{"name":"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125898157","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 : 2021-12-17DOI: 10.1109/imarc49196.2021.9714576
P. Mishra, Surabh Raj, V. Tripathi
In this work a novel hexagonal slotted circular patch antenna is developed. The antenna is developed to be operating in ISM band $(5.72-5.87mathrm{GHz})$ for biomedical applications with center frequency of 5.8 GHz. The designed antenna shows the simulated and measured -10dB band width of 180MHz(5.71- 5.89GHz) and 760MHz (5.4-6.16 GHz) respectively, which covers the entire 5.8GHz ISM band. The simulated gain and efficiency of designed antenna are 4.85 dBi and 97% respectively at resonance frequency of 5.8 GHz. The experimental results of developed antenna show the good agreement for ISM band biomedical applications.
{"title":"A Novel Hexagonal Slotted Circular Patch Antenna for ISM Band Biomedical Applications","authors":"P. Mishra, Surabh Raj, V. Tripathi","doi":"10.1109/imarc49196.2021.9714576","DOIUrl":"https://doi.org/10.1109/imarc49196.2021.9714576","url":null,"abstract":"In this work a novel hexagonal slotted circular patch antenna is developed. The antenna is developed to be operating in ISM band $(5.72-5.87mathrm{GHz})$ for biomedical applications with center frequency of 5.8 GHz. The designed antenna shows the simulated and measured -10dB band width of 180MHz(5.71- 5.89GHz) and 760MHz (5.4-6.16 GHz) respectively, which covers the entire 5.8GHz ISM band. The simulated gain and efficiency of designed antenna are 4.85 dBi and 97% respectively at resonance frequency of 5.8 GHz. The experimental results of developed antenna show the good agreement for ISM band biomedical applications.","PeriodicalId":226787,"journal":{"name":"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122065406","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 : 2021-12-17DOI: 10.1109/imarc49196.2021.9714639
Sonu Meena, Aditi Sharma, K. V. Srivastava, Saptarshi Ghosh
This paper presents a dual-polarization dualtransmission band frequency selective rasorber (FSR) with selective in-band transmission responses. The proposed FSR is a two-tier geometry; the top resistive layer consists of a periodic arrangement of convoluted cross-dipole pattern, whereas the bottom lossless layer comprises three square slots of different sizes. A wide absorption band containing two in-band transmission peaks are obtained from the top layer, and the bottom layer is used to assist the overall absorption response as well as realize highly selective transmission windows. Furthermore, the proposed structure is dual-polarized and has angularly stable characteristic upto 45o incident angle. The geometry has also been analyzed with respect to surface current distributions and parametric variations. The proposed FSR, while simulated, shows two transmission bands at 5.85 GHz and 7.10 GHz with 3.10 dB and 3.90 dB insertion losses, respectively. A wide absorption band having absorptivity more than 80% is achieved around the transmission bands in the frequency ranges of 2.83 to 5.10 GHz, 6.18 to 6.82 GHz, and 7.58 to 9.75 GHz.
{"title":"A Dual-Polarized Dual-Band Frequency Selective Rasorber With Selective Transmission Windows","authors":"Sonu Meena, Aditi Sharma, K. V. Srivastava, Saptarshi Ghosh","doi":"10.1109/imarc49196.2021.9714639","DOIUrl":"https://doi.org/10.1109/imarc49196.2021.9714639","url":null,"abstract":"This paper presents a dual-polarization dualtransmission band frequency selective rasorber (FSR) with selective in-band transmission responses. The proposed FSR is a two-tier geometry; the top resistive layer consists of a periodic arrangement of convoluted cross-dipole pattern, whereas the bottom lossless layer comprises three square slots of different sizes. A wide absorption band containing two in-band transmission peaks are obtained from the top layer, and the bottom layer is used to assist the overall absorption response as well as realize highly selective transmission windows. Furthermore, the proposed structure is dual-polarized and has angularly stable characteristic upto 45o incident angle. The geometry has also been analyzed with respect to surface current distributions and parametric variations. The proposed FSR, while simulated, shows two transmission bands at 5.85 GHz and 7.10 GHz with 3.10 dB and 3.90 dB insertion losses, respectively. A wide absorption band having absorptivity more than 80% is achieved around the transmission bands in the frequency ranges of 2.83 to 5.10 GHz, 6.18 to 6.82 GHz, and 7.58 to 9.75 GHz.","PeriodicalId":226787,"journal":{"name":"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125591466","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 : 2021-12-17DOI: 10.1109/imarc49196.2021.9714628
V. Ruparelia, A. Praveen Paul
This paper presents the various causes of nonlinearities in poly-Silicon resistor: The study in this paper confirms that the most dominant source of 3rd Harmonics in poly-resistors is self-heating. We have also briefly discussed the various self-heating models available and proposed an updated model based on Rth -Cth thermal network. Finally the model to hardware correlation of the 3rd harmonic output power is shown, which highlights that the proposed self-heating model provides the best matching with the hardware results, when compared to the other available models, without compromising the accuracy of other parts of the model.
{"title":"Characterization and Modeling of Harmonics in SOI Poly-Silicon Resistors","authors":"V. Ruparelia, A. Praveen Paul","doi":"10.1109/imarc49196.2021.9714628","DOIUrl":"https://doi.org/10.1109/imarc49196.2021.9714628","url":null,"abstract":"This paper presents the various causes of nonlinearities in poly-Silicon resistor: The study in this paper confirms that the most dominant source of 3rd Harmonics in poly-resistors is self-heating. We have also briefly discussed the various self-heating models available and proposed an updated model based on Rth -Cth thermal network. Finally the model to hardware correlation of the 3rd harmonic output power is shown, which highlights that the proposed self-heating model provides the best matching with the hardware results, when compared to the other available models, without compromising the accuracy of other parts of the model.","PeriodicalId":226787,"journal":{"name":"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128309055","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 : 2021-12-17DOI: 10.1109/imarc49196.2021.9714622
Manu Kashyap, Abhinav Joshi, A. Basu, Sakshi Leekha
A SIW based BPF using the thin film technology is showcased and design considerations are presented. Multiple BPFs were initially designed through 3D EM simulations to derive the equations for different parameters of the filter. A $mathbf{5}^{text{th}}$ order $32mathrm{GHz}-42.5mathrm{GHz}$ SIW BPF with FBW of 28.2% was achieved using this approach. A row of continuous vias on SIW BPF were replaced by an edge plating process. Simulation results of BPF hows an attenuation below 1dB in the passband ampersand out of band rejection of 30dB. The S11 at center frequency was $-19.5mathrm{~dB}$. The measured result shows a good correlation with the simulation results.
{"title":"Design of Edge Plated SIW BPF Using Thin Film Technology","authors":"Manu Kashyap, Abhinav Joshi, A. Basu, Sakshi Leekha","doi":"10.1109/imarc49196.2021.9714622","DOIUrl":"https://doi.org/10.1109/imarc49196.2021.9714622","url":null,"abstract":"A SIW based BPF using the thin film technology is showcased and design considerations are presented. Multiple BPFs were initially designed through 3D EM simulations to derive the equations for different parameters of the filter. A $mathbf{5}^{text{th}}$ order $32mathrm{GHz}-42.5mathrm{GHz}$ SIW BPF with FBW of 28.2% was achieved using this approach. A row of continuous vias on SIW BPF were replaced by an edge plating process. Simulation results of BPF hows an attenuation below 1dB in the passband ampersand out of band rejection of 30dB. The S11 at center frequency was $-19.5mathrm{~dB}$. The measured result shows a good correlation with the simulation results.","PeriodicalId":226787,"journal":{"name":"2021 IEEE MTT-S International Microwave and RF Conference (IMARC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116557183","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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