Pub Date : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756217
Hao Wang, Jing Zhou, Yong Huang, Jie Wang
A compact L-shaped strip fed air-supported microstrip antenna with a simple structure is proposed at UHF band. This linear polarized microstrip antenna (LPMA) is miniaturized by bending both opposite sides of the antenna. To achieve the low profile, the L-shaped feeder, compensating the reactive of the antenna, has been designed. The dimensions of the proposed antenna are 200 mm×200 mm×15 mm (0.27λ0× 0.27λ0 ×0.026λ0) at the center frequency 417 MHz). The antenna has been successfully simulated, fabricated and measured. Experimental results show that the proposed antenna exhibits a good impedance bandwidth of 7 MHz (414 MHz-421 MHz) for VSWR <; 2. The simulation and measured results show a good agreement with each other.
提出了一种结构简单、结构紧凑的超高频l形带馈气微带天线。这种线性极化微带天线(LPMA)通过弯曲天线的两侧来实现小型化。为了实现低轮廓，设计了l型馈线来补偿天线的无功。天线尺寸为200 mm×200 mm×15 mm (0.27λ0× 0.27λ0 ×0.026λ0)，中心频率为417 MHz。该天线已成功地进行了仿真、制作和测量。实验结果表明，该天线具有良好的阻抗带宽，在VSWR <;2. 仿真结果与实测结果吻合较好。
{"title":"Low-profile capacitive fed air-supported microstrip antenna at UHF band for biomedical application","authors":"Hao Wang, Jing Zhou, Yong Huang, Jie Wang","doi":"10.1109/IMWS-BIO.2013.6756217","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756217","url":null,"abstract":"A compact L-shaped strip fed air-supported microstrip antenna with a simple structure is proposed at UHF band. This linear polarized microstrip antenna (LPMA) is miniaturized by bending both opposite sides of the antenna. To achieve the low profile, the L-shaped feeder, compensating the reactive of the antenna, has been designed. The dimensions of the proposed antenna are 200 mm×200 mm×15 mm (0.27λ<sub>0</sub>× 0.27λ<sub>0</sub> ×0.026λ<sub>0</sub>) at the center frequency 417 MHz). The antenna has been successfully simulated, fabricated and measured. Experimental results show that the proposed antenna exhibits a good impedance bandwidth of 7 MHz (414 MHz-421 MHz) for VSWR <; 2. The simulation and measured results show a good agreement with each other.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"65 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80183969","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756138
Dandan Liang, Shi Pu, H. Hui
This paper introduces a decoupling method to increase the power output for the realization of efficient wireless power transfer (WPT) by using a linearly stacked coil array as the receiver (Rx). The design of the Rx coil array and the emphasis on how to remove the mutual coupling effects among the coil elements in this array are both described in a simulated WPT system including the transmitter/receiver (Tx/Rx) coils. By utilizing the proposed linear coil array and employing the effective decoupling method, the improvement of the transfer efficiency as defined is demonstrated by simulation results.
{"title":"Improvement of power output for efficient wireless power transfer by using a stacked coil array","authors":"Dandan Liang, Shi Pu, H. Hui","doi":"10.1109/IMWS-BIO.2013.6756138","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756138","url":null,"abstract":"This paper introduces a decoupling method to increase the power output for the realization of efficient wireless power transfer (WPT) by using a linearly stacked coil array as the receiver (Rx). The design of the Rx coil array and the emphasis on how to remove the mutual coupling effects among the coil elements in this array are both described in a simulated WPT system including the transmitter/receiver (Tx/Rx) coils. By utilizing the proposed linear coil array and employing the effective decoupling method, the improvement of the transfer efficiency as defined is demonstrated by simulation results.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"1 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83088570","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756211
Bo Li, Z. Shen
A dual-band bandpass frequency selective structure (FSS) with large frequency band ratio is presented in this paper. The proposed FSS consists of an array of three-layer printed circuit boards and a number of inserted metallic rods and plates. Under a linearly polarized incident wave with its electric field perpendicular to the printed circuit boards, two propagation paths with four resonators are constructed, providing dual-band performance. Furthermore, the two operating passbands are determined by resonators in the two propagation paths, respectively, which can be designed independently. In order to verify our concept, a design example is given and its simulated results show that the proposed FSS exhibits stable dual-band performance with large band spacing under a large variation of incident angle.
{"title":"Dual-band frequency selective structure with large frequency band ratio","authors":"Bo Li, Z. Shen","doi":"10.1109/IMWS-BIO.2013.6756211","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756211","url":null,"abstract":"A dual-band bandpass frequency selective structure (FSS) with large frequency band ratio is presented in this paper. The proposed FSS consists of an array of three-layer printed circuit boards and a number of inserted metallic rods and plates. Under a linearly polarized incident wave with its electric field perpendicular to the printed circuit boards, two propagation paths with four resonators are constructed, providing dual-band performance. Furthermore, the two operating passbands are determined by resonators in the two propagation paths, respectively, which can be designed independently. In order to verify our concept, a design example is given and its simulated results show that the proposed FSS exhibits stable dual-band performance with large band spacing under a large variation of incident angle.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"51 2 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83401145","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756191
W. Ser, Jufeng Yu, Xufeng Guo, Jianmin Zhang, M. E. H. Ong
Current heart rate measurement methods include the use of ECG or pulse oximeter systems. While these systems are effective, they require skin contact. It has been demonstrated that Doppler radars can be used to measure heart rates too. This paper presents the design of a modified 24 GHz Doppler system. The modified signal conditioning board uses a 2-stage amplifier and a simple dc offset compensation circuit. The design removes the unstable problem and reduces circuit noise. The signal processing algorithm used is also presented. Measurements on 16 volunteers were made using the modified system and promising results have been obtained.
{"title":"Noncontact heart rate measurement using a 24 GHz Doppler radar","authors":"W. Ser, Jufeng Yu, Xufeng Guo, Jianmin Zhang, M. E. H. Ong","doi":"10.1109/IMWS-BIO.2013.6756191","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756191","url":null,"abstract":"Current heart rate measurement methods include the use of ECG or pulse oximeter systems. While these systems are effective, they require skin contact. It has been demonstrated that Doppler radars can be used to measure heart rates too. This paper presents the design of a modified 24 GHz Doppler system. The modified signal conditioning board uses a 2-stage amplifier and a simple dc offset compensation circuit. The design removes the unstable problem and reduces circuit noise. The signal processing algorithm used is also presented. Measurements on 16 volunteers were made using the modified system and promising results have been obtained.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"86 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75827240","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756218
Peng Li, Y. Shang, Hao Yu, Mingbin Yu
This work presents one wideband coupled mushroom antenna by 3D-TSV based Composite Right/Left Handed Transmission Line (CRLH T-Line). The antenna has 2×2 mushroom unit-cells with rectangle loop notch on the top metal surface to form inner and outer CRLH T-Line. As a result, there are three resonance modes in one band that improves operation bandwidth. The proposed antenna is centered at 150GHz with 14GHz bandwidth, gain of 5.2dBi and efficiency of 78%. The overall dimension of the proposed antenna is 608μm×188μm upon high resistivity silicon substrate with a thickness of 80μm. The demonstrated antenna shows promising applications for sub-THz biomedical imaging.
{"title":"A wideband 150GHz antenna by 3D-TSV based Composite Right/Left Handed Transmission Line for Sub-THz biomedical imaging","authors":"Peng Li, Y. Shang, Hao Yu, Mingbin Yu","doi":"10.1109/IMWS-BIO.2013.6756218","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756218","url":null,"abstract":"This work presents one wideband coupled mushroom antenna by 3D-TSV based Composite Right/Left Handed Transmission Line (CRLH T-Line). The antenna has 2×2 mushroom unit-cells with rectangle loop notch on the top metal surface to form inner and outer CRLH T-Line. As a result, there are three resonance modes in one band that improves operation bandwidth. The proposed antenna is centered at 150GHz with 14GHz bandwidth, gain of 5.2dBi and efficiency of 78%. The overall dimension of the proposed antenna is 608μm×188μm upon high resistivity silicon substrate with a thickness of 80μm. The demonstrated antenna shows promising applications for sub-THz biomedical imaging.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"7 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77826893","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756227
Xue-xia Yang, Ye-Qing Wang, G. Tan
A tapered slot antenna (TSA) operates at Ka band with high gain and broadband is designed in this paper. The TSA is printed on two side of the substrate. A SIW transformer between the microstrip feedline and the TSA is applied to minimize the feedline losses for forming antenna arrays. The simulated bandwidth of the reflection coefficient less than -10dB is 26GHz from 25GHz to 51GHz. The front-back ratio is 15dB and the half power beam width is 60°. This prototype is fabricated and measured to verify this design. It is easy for this antenna element to be expended to array and applied in millimeter wave power transmission and imaging.
{"title":"A millimeter tapered slot antenna fed by SIW with broadband and high gain","authors":"Xue-xia Yang, Ye-Qing Wang, G. Tan","doi":"10.1109/IMWS-BIO.2013.6756227","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756227","url":null,"abstract":"A tapered slot antenna (TSA) operates at Ka band with high gain and broadband is designed in this paper. The TSA is printed on two side of the substrate. A SIW transformer between the microstrip feedline and the TSA is applied to minimize the feedline losses for forming antenna arrays. The simulated bandwidth of the reflection coefficient less than -10dB is 26GHz from 25GHz to 51GHz. The front-back ratio is 15dB and the half power beam width is 60°. This prototype is fabricated and measured to verify this design. It is easy for this antenna element to be expended to array and applied in millimeter wave power transmission and imaging.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"36 142 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83261264","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756256
Fei Gao, Xiaohua Feng, Yuanjin Zheng
Microwave imaging and microwave-induced thermoacoustic imaging have attracted increasing research interest in recent decades. In this paper, we will introduce a novel imaging modality named microwave-acoustic correlated imaging to correlate both scattered microwave and thermoelastically induced acoustic wave, achieving enhanced imaging contrast and resolution using numerical simulations. In addition, an equivalent circuit is proposed to model the microwave-acoustic interaction with biological tissues, which is experimentally proved to show good agreement in both time and frequency domain.
{"title":"Microwave-acoustic correlated imaging and circuit modelling of biological tissues","authors":"Fei Gao, Xiaohua Feng, Yuanjin Zheng","doi":"10.1109/IMWS-BIO.2013.6756256","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756256","url":null,"abstract":"Microwave imaging and microwave-induced thermoacoustic imaging have attracted increasing research interest in recent decades. In this paper, we will introduce a novel imaging modality named microwave-acoustic correlated imaging to correlate both scattered microwave and thermoelastically induced acoustic wave, achieving enhanced imaging contrast and resolution using numerical simulations. In addition, an equivalent circuit is proposed to model the microwave-acoustic interaction with biological tissues, which is experimentally proved to show good agreement in both time and frequency domain.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"20 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78750620","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756136
Kyungmin Na, Heedon Jang, Sai Kiran Oruganti, F. Bien
Modern medical treatment and diagnoses benefit from IT technologies ranging from small pill transceiver devices to permanent implanted devices. Either case must communicate to the external devices for the medical expert to view. Moreover, these devices require certain form of power supply in order for the device the function properly. In order to minimize the necessary battery requirement, power consumption per bit and required internal battery cell is carefully designed. Among the choices for power supply arrangement, wireless power transfer (WPT) technology is providing an alternative promising solution for supplying power to medically implanted devices. In this paper, WPT technology for medically implantable device is analyzed. Some of the issue is studied, and possible solution is presented.
{"title":"An improved wireless power transfer system with adaptive technique for Implantable Biomedical Devices","authors":"Kyungmin Na, Heedon Jang, Sai Kiran Oruganti, F. Bien","doi":"10.1109/IMWS-BIO.2013.6756136","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756136","url":null,"abstract":"Modern medical treatment and diagnoses benefit from IT technologies ranging from small pill transceiver devices to permanent implanted devices. Either case must communicate to the external devices for the medical expert to view. Moreover, these devices require certain form of power supply in order for the device the function properly. In order to minimize the necessary battery requirement, power consumption per bit and required internal battery cell is carefully designed. Among the choices for power supply arrangement, wireless power transfer (WPT) technology is providing an alternative promising solution for supplying power to medically implanted devices. In this paper, WPT technology for medically implantable device is analyzed. Some of the issue is studied, and possible solution is presented.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"27 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90377586","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756180
F. Gozasht, A. Mohan
This paper presents the design of a triple-band implantable miniaturised slot PIFA antenna for Medical Implant Communication Service (MICS) band at 433MHz, Wireless Medical Telemetry Service (WMTS) band at 1430 MHz and Industrial, Scientific, and Medical (ISM) band at 2.4GHz. Simulations based on homogeneous and inhomogeneous phantoms are employed to design the proposed small antenna suitable for implanting in the arm or under the chest. The measured results are obtained by immersing a prototype of the proposed antenna in a phantom. The antenna occupies a volume less than 1cm3 and its size reduction is about 50% compared to the standard E-shaped patch antenna reported in the literature.
{"title":"Miniaturized slot PIFA antenna for tripleband implantable biomedical applications","authors":"F. Gozasht, A. Mohan","doi":"10.1109/IMWS-BIO.2013.6756180","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756180","url":null,"abstract":"This paper presents the design of a triple-band implantable miniaturised slot PIFA antenna for Medical Implant Communication Service (MICS) band at 433MHz, Wireless Medical Telemetry Service (WMTS) band at 1430 MHz and Industrial, Scientific, and Medical (ISM) band at 2.4GHz. Simulations based on homogeneous and inhomogeneous phantoms are employed to design the proposed small antenna suitable for implanting in the arm or under the chest. The measured results are obtained by immersing a prototype of the proposed antenna in a phantom. The antenna occupies a volume less than 1cm3 and its size reduction is about 50% compared to the standard E-shaped patch antenna reported in the literature.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"28 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76128405","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 : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756167
C. Baer, Gordon Notzon, C. Dahl, C. Schulz, B. Will, I. Rolfes, T. Musch
In this contribution, a novel measuring method for the differentiation of intra vascular plaque types is presented. The proposed method operates contact free because of the mm-wave based approach. Fundamentals concerning material properties of blood and plaque, and electromagnetic barrier reflections are discussed. Furthermore, a test setup consisting of a miniaturized sensor setup is introduced that clarifies the measuring concept. Additionally, results of 3D electromagnetic field simulations as well as first measurements ex situ performed on non-human genetic materials are shown and discussed in detail.
{"title":"A millimeter-wave based measuring method for the differentiation of atherosclerotic plaques","authors":"C. Baer, Gordon Notzon, C. Dahl, C. Schulz, B. Will, I. Rolfes, T. Musch","doi":"10.1109/IMWS-BIO.2013.6756167","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756167","url":null,"abstract":"In this contribution, a novel measuring method for the differentiation of intra vascular plaque types is presented. The proposed method operates contact free because of the mm-wave based approach. Fundamentals concerning material properties of blood and plaque, and electromagnetic barrier reflections are discussed. Furthermore, a test setup consisting of a miniaturized sensor setup is introduced that clarifies the measuring concept. Additionally, results of 3D electromagnetic field simulations as well as first measurements ex situ performed on non-human genetic materials are shown and discussed in detail.","PeriodicalId":6321,"journal":{"name":"2013 IEEE MTT-S International Microwave Workshop Series on RF and Wireless Technologies for Biomedical and Healthcare Applications (IMWS-BIO)","volume":"21 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76500058","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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