2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)最新文献

{"title":"Design and Evaluation of the Mental Relaxation VR Scenes Using Forehead EEG Features","authors":"Lingqing Zhu, Xiang Tian, Xiangmin Xu, Lin Shu","doi":"10.1109/IMBIOC.2019.8777812","DOIUrl":"https://doi.org/10.1109/IMBIOC.2019.8777812","url":null,"abstract":"With the acceleration of social rhythm and the exacerbation of psychological problems caused by stress, psychological relief and adjuvant therapy based on relaxation and decompression have become the focus of research. Different from the traditional psychological relaxation therapy methods that using images, audios and videos, VR-based relaxation therapy is a promising way as the interaction of the VR system and dynamics of virtual environment affect the effectiveness of relax through more immersive and authentic audio-visual scenes. It makes the patient's emotion adjust to the normal state by generating a simulated environment in a VR system to comfort the subject and relieve subject mental stress. This paper presents a novel VR relaxation scenes design and evaluation framework where subject sensitive tourism VR videos were selected and combined with alpha wave induced background music. The relaxation effectiveness of VR scenes were evaluated by SAM scale, relaxation questionnaire and frontal EEG signals. A number of frontal EEG features from various analysis domains were explored to obtain the best stress-relevant features and to establish a stress-frontal EEG correlation model for stress evaluation, including time, frequency, entropy, geometric analysis, subband spectra, multiscale entropy, etc. 13 students aged between 20 and 30 were recruited in the evaluation experiment of 6 newly designed VR relaxation scenes. During which subjects frontal EEG signals were recorded as well as the SAM scale and questionnaire, the features that demonstrate an significant difference before and after watching VR scenes were identified, such as Energy, Energy ratio, the mean square root of frequency, frequency domain symmetry, Energy entropy and Shannon entropywhere frequency bands of delta, theta, low alpha and high alpha were considered. Finally, the features that demonstrate an significant difference before and after watching VR scenes were identified. The best stress-relevant features were selected to establish a stress-frontal EEG correlation model for stress evaluation which could be used to validate the effectiveness of VR relaxation scenes.","PeriodicalId":171472,"journal":{"name":"2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131053675","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}

{"title":"A Coaxial Tri-slot Antenna with Aperiodic Layout of the Slots for Microwave Ablation","authors":"Yishuai Xu, Wenjun Zhang, Bing Zhang","doi":"10.1109/IMBIOC.2019.8777766","DOIUrl":"https://doi.org/10.1109/IMBIOC.2019.8777766","url":null,"abstract":"Microwave ablation is a promising thermal therapy that is used to kill tumors by the high temperature. In clinical setting, an ablation zone with high sphericity is desirable because most tumors are nearly spherical shapes. In this study, a tri-slot coaxial antenna with aperiodic layout of the slots is proposed to achieve an ablation zone with high circularity. The genetic algorithm is used to optimize the layout of the slots. A FEM model is built for evaluate the performance of the proposed antenna. The simulation results show that the aperiodic tri-slot antenna can obtain a relatively small ablation zone with high sphericity.","PeriodicalId":171472,"journal":{"name":"2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122459373","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}

{"title":"Arousal Evaluation of VR Affective Scenes Based on HR and SAM","authors":"D. Liao, Wenzhuo Zhang, Guodong Liang, Yingxuan Li, Jingyan Xie, Lingqing Zhu, Xiangmin Xu, Lin Shu","doi":"10.1109/IMBIOC.2019.8777844","DOIUrl":"https://doi.org/10.1109/IMBIOC.2019.8777844","url":null,"abstract":"Various of methods have been proposed for emotional induction including affective pictures, audios, and video clips. However, significant limitations have been exhibited such as low emotion elicitation efficiency and high susceptibility to ambient interferences. Considering virtual reality (VR) provides a more immersive and authentic audio-visual sense, this paper puts forward an emotion elicitation system using VR named Affective Virtual Reality System (AVRS). Firstly, the emotional multi-features were extracted and classified from the existing standard affective systems. Then the VR scenes were designed by writing scripts, building 3D modeling and scenes using Unreal Engine 4.12. Through Self-Assessment Manikin (SAM) evaluation, it was verified that the emotions inducted by the VR scenes were evenly distributed in the three-dimensional space of emotion, which reached the standardization of affective system in field of psychology. Then we further validated the advantages of AVRS by putting the four VR scenes into the LCD and VR device respectively. We tested the arousal level with the heart rate data and the SAM scale. The result shows that the arousal of other scenes have no significant difference from the videos in the VR environment, except the fear scene. We found that there are some conditions for the VR scenes to achieve a good emotional effect. Enhancing the interactivity and plot design is an important aspect.","PeriodicalId":171472,"journal":{"name":"2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122633567","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}

{"title":"Electrically Small Half-Mode Substrate Integrated Waveguide Circular Cavity Antenna with Improved Gain","authors":"Shui Liu, F. Xu, K. Wu","doi":"10.1109/IMBIOC.2019.8777761","DOIUrl":"https://doi.org/10.1109/IMBIOC.2019.8777761","url":null,"abstract":"A novel electrically small half-mode substrate integrated waveguide (HMSIW) circular cavity antenna with improved gain is proposed in this letter. Its low profile, compact size and high gain characteristics are applicable to RF-linked implantable medical devices. A semi-circular patch is extended out of HMSIW cavity antenna to meander the surface current in cavity and decrease the operating frequency of the antenna. Moreover, the extra patch also helps to enlarge the radiating aperture and the gain of the antenna can be improved. To conclude, a slight size increasement of the antenna (extra semicircular patch) can make the antenna electrically smaller with improved gain. The designed antenna possesses a maximum gain of 5.8 dB over the bandwidth of 70 MHz (1%) with 15 dB front-to-back ratio and the cross-polarization level is below −18 dB.","PeriodicalId":171472,"journal":{"name":"2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"53 86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131002144","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}

{"title":"Design of Cortical Bone Drilling Temperature Measurement Instrument in Virtual reality system","authors":"Haobin, Huyahui, Zhengqinchun, He Xin, Chen Chao","doi":"10.1109/IMBIOC.2019.8777826","DOIUrl":"https://doi.org/10.1109/IMBIOC.2019.8777826","url":null,"abstract":"Cortical bone drilling technique has been widely used in orthopedic surgery. This paper designed a new virtual instrument of monitoring cortical bone drilling temperature based on LabVIEW, which selected K type thermocouple as the temperature sensor, and AD595 as signal amplification components. The data collection technology, sensor technology and computer technology was used in the new virtual instrument. A single variable experiment was carried out to test the cortical bone drilling by the new virtual instrument. The experiment results show that the virtual instrument measured the specified period of time drilling temperature accurately. Through the experimental analysis, the optimal spindle speed and feed speed could be definite. This would provide theoretical guidance for practical clinical medical.","PeriodicalId":171472,"journal":{"name":"2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121067449","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}

{"title":"Antenna Design with Polarization Diversity for Wireless Ingestible Capsule","authors":"H. Chu","doi":"10.1109/IMBIOC.2019.8777834","DOIUrl":"https://doi.org/10.1109/IMBIOC.2019.8777834","url":null,"abstract":"An antenna-in-package design is proposed for a wireless ingestible capsule operated at ISM (2.4-2.48 GHz) band, and also experimentally tested in a system level. The proposed antenna is designed for data transmission between the ingestible capsule and a smart phone using Bluetooth. A modified planar inverted-F structure is proposed for the antenna design, whose end section is bent to be vertical with respect to the substrate, mainly for considerations of frequency tuning, size reduction and polarization diversity. Firstly, a one-layer cube muscle phantom model is used for initial design and optimization. Then, a comprehensive evaluation method, with considerations of the polarization mismatch loss, is proposed to analyze the radiation performance using a CST human body model. Evaluated results indicate that, the proposed design can ensure enough margins for the link budget, despite the relative position between the capsule and the smart phone.","PeriodicalId":171472,"journal":{"name":"2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125024284","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}

{"title":"A Dual-band High-efficiency Power Amplifier with Small Frequency Ratio","authors":"J. C. Zhang, S. Zheng","doi":"10.1109/IMBIOC.2019.8777853","DOIUrl":"https://doi.org/10.1109/IMBIOC.2019.8777853","url":null,"abstract":"A dual-band high-efficiency power amplifier with small frequency ratio is implemented by effectively incorporating the Class-F and inverse Class-F modes. The multiple harmonic control and the dual-band matching techniques are employed to design the matching networks. For demonstration, a dual-band power amplifier operating at 1.8 GHz and 2.4 GHz was designed, fabricated and measured. The measured results show that the implemented power amplifier achieves a high PAE of 66.49% and 63.74% at 1.8 GHz and 2.4 GHz respectively. The performance measured at two operating frequencies are similar in gain, bandwidth, efficiency and maximum output power.","PeriodicalId":171472,"journal":{"name":"2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125264277","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}

{"title":"Research on a Bioradar Based on the Analog Correlator","authors":"Hang Lan, Chunhong Chen, Chao Fang, Jiahao Chen, Yulan Lin","doi":"10.1109/IMBIOC.2019.8777923","DOIUrl":"https://doi.org/10.1109/IMBIOC.2019.8777923","url":null,"abstract":"This paper presents a 5.75 GHz high-resolution continuous wave Doppler bioradar system based on the analog correlator. It is used to detect the breathing and heartbeat signals of a stationary human body. To reduce the power consumption of the system, the quadrature demodulation receiver is replaced by the analog correlator to generate the quadrature baseband signal. A radio frequency leakage cancellation module based on the six-port network is used at the front end to improve the detection sensitivity and the Tx-Rx isolation. The results show that the bioradar can accurately measure the heartbeat and respiratory rates at a distance of 1.5 meters.","PeriodicalId":171472,"journal":{"name":"2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125585400","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}

{"title":"Portable Radar Circuits and Systems for Wireless Sensing and Localization","authors":"Changzhi Li","doi":"10.1109/IMBIOC.2019.8777780","DOIUrl":"https://doi.org/10.1109/IMBIOC.2019.8777780","url":null,"abstract":"Wireless sensors with beamforming capability, embedded control and communication links have the potential to improve the quality of service in healthcare, infrastructure maintenance, and energy conservation. This paper provides an overview of the team's recent research activities on smart radio frequency (RF) sensors aided with advanced technologies such as beamforming, inverse synthetic aperture radar (ISAR), and flexible electronics. The scope of applications extends to sleep study, fall detection, indoor localization, and civil engineering.","PeriodicalId":171472,"journal":{"name":"2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122610918","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}

{"title":"The Development of Vital-SAR-Imaging with an FMCW Radar System","authors":"Jiaming Yan, Jiaming Hu, Gepeng Zhang, Hanqing Chen, Heng Hu, Hong Hong, Chen Gu, Xiaohua Zhu, Changzhi Li","doi":"10.1109/IMBIOC.2019.8777881","DOIUrl":"https://doi.org/10.1109/IMBIOC.2019.8777881","url":null,"abstract":"Locating and identifying human targets in a synthetic aperture radar (SAR) image is important but challenging for security and rescue applications. In this paper, we present an overview on the development of vital-SAR-imaging method with frequency-modulated continuous-wave (FMCW) radar system to realize targets imaging and human identification simultaneously. The experimental results conducted to demonstrate the accuracy and robustness of the method will be discussed in detail.","PeriodicalId":171472,"journal":{"name":"2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129755261","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}