Pub Date : 2013-12-01DOI: 10.1109/IMWS-BIO.2013.6756206
C. Mak, W. Lau, C. Rowell
This paper analyzes the effect of close proximity for coil arrays and measures the S21 mutual coupling, resonant frequency, and quality factor (Q) of arrays with 2, 4, & 8 coils. It is demonstrated that for vertically separated coils, the mutual coupling effect decays asymptotically as a function of separation distance; whereas for horizontally separated coils, there are two mutual coupling minima with one minima occurring for overlapping coils and the second minima similar to the vertically separated coils. Results from this study can be used to optimize electrically small RF coil arrays used in low-field MRI, NFC, and wireless power transfer.
{"title":"Electrically small RF coil arrays for medical & wireless power applications","authors":"C. Mak, W. Lau, C. Rowell","doi":"10.1109/IMWS-BIO.2013.6756206","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756206","url":null,"abstract":"This paper analyzes the effect of close proximity for coil arrays and measures the S21 mutual coupling, resonant frequency, and quality factor (Q) of arrays with 2, 4, & 8 coils. It is demonstrated that for vertically separated coils, the mutual coupling effect decays asymptotically as a function of separation distance; whereas for horizontally separated coils, there are two mutual coupling minima with one minima occurring for overlapping coils and the second minima similar to the vertically separated coils. Results from this study can be used to optimize electrically small RF coil arrays used in low-field MRI, NFC, and wireless power transfer.","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":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85095230","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.2013.6756192
L. Chioukh, H. Boutayeb, D. Deslandes, K. Wu
Harmonic radar architectures present systems of wireless detection operating at multiple harmonic carrier frequencies. The noise and sensitivity of a harmonic radar system, which is developed at 12 GHz and 24 GHz for vital signs detection, are studied numerically and experimentally. The received signal power of the radar system is analyzed numerically as a function of the distance, taking into account the radar cross section (RCS) of the patient chest. The numerical data are compared with results obtained with single carrier frequency system. The total noise is a combination of thermal noise, residual phase noise, and flicker noise that presents the most elevated factor influencing the detection at baseband. Experimental results show that with the harmonic radar, the flicker noise can be reduced by 20dB at around 1Hz baseband frequency.
{"title":"Noise and sensitivity analysis of harmonic radar system for vital sign detection","authors":"L. Chioukh, H. Boutayeb, D. Deslandes, K. Wu","doi":"10.1109/IMWS-BIO.2013.6756192","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756192","url":null,"abstract":"Harmonic radar architectures present systems of wireless detection operating at multiple harmonic carrier frequencies. The noise and sensitivity of a harmonic radar system, which is developed at 12 GHz and 24 GHz for vital signs detection, are studied numerically and experimentally. The received signal power of the radar system is analyzed numerically as a function of the distance, taking into account the radar cross section (RCS) of the patient chest. The numerical data are compared with results obtained with single carrier frequency system. The total noise is a combination of thermal noise, residual phase noise, and flicker noise that presents the most elevated factor influencing the detection at baseband. Experimental results show that with the harmonic radar, the flicker noise can be reduced by 20dB at around 1Hz baseband frequency.","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":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85111824","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.2013.6756252
M. Arsalan, M. Ouda, L. Marnat, A. Shamim, K. Salama
Design considerations and limitations of implantable Intraocular Pressure Monitoring (IOPM) systems are presented in this paper. Detailed comparison with the state of the art is performed to highlight the benefits and challenges of the proposed design. The system-on-chip, presented here, is battery free and harvests energy from incoming RF signals. This low-cost design, in standard CMOS process, does not require any external components or bond wires to function. This paper provides useful insights to the designers of implantable wireless sensors in terms of design choices and associated tradeoffs.
{"title":"Implantable Intraocular Pressure Monitoring systems: Design considerations","authors":"M. Arsalan, M. Ouda, L. Marnat, A. Shamim, K. Salama","doi":"10.1109/IMWS-BIO.2013.6756252","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756252","url":null,"abstract":"Design considerations and limitations of implantable Intraocular Pressure Monitoring (IOPM) systems are presented in this paper. Detailed comparison with the state of the art is performed to highlight the benefits and challenges of the proposed design. The system-on-chip, presented here, is battery free and harvests energy from incoming RF signals. This low-cost design, in standard CMOS process, does not require any external components or bond wires to function. This paper provides useful insights to the designers of implantable wireless sensors in terms of design choices and associated tradeoffs.","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":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84168975","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.2013.6756148
U. Schwerthoeffer, R. Weigel, D. Kissinger
This paper presents a highly sensitive biosensor based on a microstrip ring resonator to detect glucose concentration. The proposed sensor structure allows observation of small variation of glucose concentration by two port S-parameter measurement. The sensor is based on a resonant microstrip ring with a microfluidic container placed on top. The interaction between the electric field and the milliliter range water-glucose solutions under test can be observed measuring the phase shift of the S-parameter from 3.98 to 4.05 GHz. Combining the microwave detection and the microfluidic network, a time efficient and low cost architecture is presented. With this technique a very sensitive water-glucose concentration of less than 50 mg/dl can be separated.
{"title":"A highly sensitive glucose biosensor based on a microstrip ring resonator","authors":"U. Schwerthoeffer, R. Weigel, D. Kissinger","doi":"10.1109/IMWS-BIO.2013.6756148","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756148","url":null,"abstract":"This paper presents a highly sensitive biosensor based on a microstrip ring resonator to detect glucose concentration. The proposed sensor structure allows observation of small variation of glucose concentration by two port S-parameter measurement. The sensor is based on a resonant microstrip ring with a microfluidic container placed on top. The interaction between the electric field and the milliliter range water-glucose solutions under test can be observed measuring the phase shift of the S-parameter from 3.98 to 4.05 GHz. Combining the microwave detection and the microfluidic network, a time efficient and low cost architecture is presented. With this technique a very sensitive water-glucose concentration of less than 50 mg/dl can be separated.","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":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87183257","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.2013.6756185
V. Kulkarni, Jung Hyup Lee, Xin Liu, M. Je
Coexistence of various on-body and intra-body biomedical ICs call for the need of inter-device data communication at high speeds with ultra lower power consumption and smaller footprint. To address these needs, this work presents an injection locked clock and data recovery (CDR) circuit in 65 nm CMOS for body channel communication transceivers that employ direct digital transmission. The CDR utilizes pulses generated due to the high pass nature of body channel from transmitted digital data and injects them directly into the VCO to recover the clock. The injection locking achieves instantaneous clock and data recovery compared to conventional PLL based CDR circuits for data rate of 100 Mb/s. With a low power consumption of 0.36 mW and a small footprint of 0.07 mm2, the proposed CDR helps further miniaturization of battery operated biomedical ICs.
{"title":"A 100 Mb/s 0.36 mW injection locked clock and data recovery circuit for WBAN transceivers","authors":"V. Kulkarni, Jung Hyup Lee, Xin Liu, M. Je","doi":"10.1109/IMWS-BIO.2013.6756185","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756185","url":null,"abstract":"Coexistence of various on-body and intra-body biomedical ICs call for the need of inter-device data communication at high speeds with ultra lower power consumption and smaller footprint. To address these needs, this work presents an injection locked clock and data recovery (CDR) circuit in 65 nm CMOS for body channel communication transceivers that employ direct digital transmission. The CDR utilizes pulses generated due to the high pass nature of body channel from transmitted digital data and injects them directly into the VCO to recover the clock. The injection locking achieves instantaneous clock and data recovery compared to conventional PLL based CDR circuits for data rate of 100 Mb/s. With a low power consumption of 0.36 mW and a small footprint of 0.07 mm2, the proposed CDR helps further miniaturization of battery operated biomedical ICs.","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":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88307473","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.2013.6756257
D. Chang, Li-Der Fang, Wen-Hsien Fang, Chih-Hung Lee
The quality of microwave imaging depends on two factors: the resolution and contrast of microwave images. The resolution of microwave image is dominated by the bandwidth of microwave signal; whereas, the contrast depends on the signal to noise ratio (SNR) - the higher the SNR is, the better the contrast of the images is. In general the wider the bandwidth of a signal has, the higher the frequency will be, which in turn causes more serious attenuation during wave propagation inside tissues. The resulting SNR is then degraded. Thereby, there is a tradeoff between the resolution and contrast of microwave images. This paper intends to study the tradeoff of the high quality microwave imaging based on a new communication scheme. In particular, we consider an multiple-input multiple-output (MIMO) approach for breast tumor detection. Conducted computer simulations show that this scheme can get a better target identification capability and improved SNR and that it can attain a better tradeoff between resolution and penetration depth.
{"title":"Tradeoff study of microwave imaging for biomedical application","authors":"D. Chang, Li-Der Fang, Wen-Hsien Fang, Chih-Hung Lee","doi":"10.1109/IMWS-BIO.2013.6756257","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756257","url":null,"abstract":"The quality of microwave imaging depends on two factors: the resolution and contrast of microwave images. The resolution of microwave image is dominated by the bandwidth of microwave signal; whereas, the contrast depends on the signal to noise ratio (SNR) - the higher the SNR is, the better the contrast of the images is. In general the wider the bandwidth of a signal has, the higher the frequency will be, which in turn causes more serious attenuation during wave propagation inside tissues. The resulting SNR is then degraded. Thereby, there is a tradeoff between the resolution and contrast of microwave images. This paper intends to study the tradeoff of the high quality microwave imaging based on a new communication scheme. In particular, we consider an multiple-input multiple-output (MIMO) approach for breast tumor detection. Conducted computer simulations show that this scheme can get a better target identification capability and improved SNR and that it can attain a better tradeoff between resolution and penetration depth.","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":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74815026","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.2013.6756234
Zhigong Wang, Xiaoying Lu, Yang Xia, Zonghao Huang, Yuxuan Zhou, Sihao Zong, Wen-Yuan Li, Xintai Zhao, Jian Xu, Jingdong Yang, Suyang Wang, Haipeng Wang, Xueliang Bao, Bilei Wang, Ming Ma
In this presentation the motor function rebuilding of paralyzed limbs of the paraplegic patients caused by spinal cord injury and the hemiplegic patients after stroke and SCI is concerned. The biomedical methods and the traditional physical methods for the rehabilitation of two kinds of paralyses are reviewed. The core part is to discuss the neural and muscular signal regeneration and the limb function rebuilding based on the principles of communication and functional electrical stimulation - a novel concept developed by the speakers. For the communication, a microwave transmission system is incorporated. The construction of the whole bio-electronic system, the animal experiments, and the elementary experiments on healthy and paralyzed patients will be demonstrated.
{"title":"Neural signal regeneration and motor function rebuilding of paralyzed limbs based on principles of communication incorporated with microwave transmission system","authors":"Zhigong Wang, Xiaoying Lu, Yang Xia, Zonghao Huang, Yuxuan Zhou, Sihao Zong, Wen-Yuan Li, Xintai Zhao, Jian Xu, Jingdong Yang, Suyang Wang, Haipeng Wang, Xueliang Bao, Bilei Wang, Ming Ma","doi":"10.1109/IMWS-BIO.2013.6756234","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756234","url":null,"abstract":"In this presentation the motor function rebuilding of paralyzed limbs of the paraplegic patients caused by spinal cord injury and the hemiplegic patients after stroke and SCI is concerned. The biomedical methods and the traditional physical methods for the rehabilitation of two kinds of paralyses are reviewed. The core part is to discuss the neural and muscular signal regeneration and the limb function rebuilding based on the principles of communication and functional electrical stimulation - a novel concept developed by the speakers. For the communication, a microwave transmission system is incorporated. The construction of the whole bio-electronic system, the animal experiments, and the elementary experiments on healthy and paralyzed patients will be demonstrated.","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":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80219348","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.2013.6756251
E. Chow, Himanshu Joshi, A. Wilats, D. Thompson, Kevin Cotton, Sujith Nair, Clint Warren, Brian Tomayko, A. Adkins, A. Shen, M. Morris, Bryan Byerman
Radio frequency (RF) wireless communication development has unique challenges for medical implantable applications stemming from the electromagnetic (EM) interactions with the surrounding biological tissue. There are, however, numerous benefits of higher frequency RF communication, including improved speed, range, reliability, and ease of use, that have resulted in a rapid growth of RF in implantable devices. There has also been significant development of numerous network protocols and FCC allocations of bands targeted specifically for these applications. Thorough survey and analysis of patient and physician use cases is critical for steering the design and development phases to maximize a product's chance of success. Sufficient modeling, representative and comprehensive testing utilizing anechoic chambers and RF phantom recipes, iterative design methods, and in vivo studies are necessary for successful development of a high-frequency RF Class III medical device targeted for commercial release.
{"title":"Commercial development of RF medical implantable devices","authors":"E. Chow, Himanshu Joshi, A. Wilats, D. Thompson, Kevin Cotton, Sujith Nair, Clint Warren, Brian Tomayko, A. Adkins, A. Shen, M. Morris, Bryan Byerman","doi":"10.1109/IMWS-BIO.2013.6756251","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756251","url":null,"abstract":"Radio frequency (RF) wireless communication development has unique challenges for medical implantable applications stemming from the electromagnetic (EM) interactions with the surrounding biological tissue. There are, however, numerous benefits of higher frequency RF communication, including improved speed, range, reliability, and ease of use, that have resulted in a rapid growth of RF in implantable devices. There has also been significant development of numerous network protocols and FCC allocations of bands targeted specifically for these applications. Thorough survey and analysis of patient and physician use cases is critical for steering the design and development phases to maximize a product's chance of success. Sufficient modeling, representative and comprehensive testing utilizing anechoic chambers and RF phantom recipes, iterative design methods, and in vivo studies are necessary for successful development of a high-frequency RF Class III medical device targeted for commercial release.","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":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74386507","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.2013.6756137
A. Khripkov, W. Hong, K. Pavlov
A novel miniaturized transmitting (TX) and receiving (RX) wireless power transfer (WPT) resonators operating at 6.78 MHz integrated with antenna for medical implant communication service (MICS) band (402 MHz-405 MHz) are devised and presented. Integration of resonators into wireless power system and optimization of matching circuit are discussed. The prototype model is fabricated and tested in vitro, using human body phantom mimicking electrical properties of the human body tissues. The power transfer efficiency (PTE) of 30% at 20 mm distance and implanted antenna gain of -23 dBi are confirmed via simulations and measurements.
{"title":"Design of an integrated resonant structure for wireless power transfer and data telemetry","authors":"A. Khripkov, W. Hong, K. Pavlov","doi":"10.1109/IMWS-BIO.2013.6756137","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756137","url":null,"abstract":"A novel miniaturized transmitting (TX) and receiving (RX) wireless power transfer (WPT) resonators operating at 6.78 MHz integrated with antenna for medical implant communication service (MICS) band (402 MHz-405 MHz) are devised and presented. Integration of resonators into wireless power system and optimization of matching circuit are discussed. The prototype model is fabricated and tested in vitro, using human body phantom mimicking electrical properties of the human body tissues. The power transfer efficiency (PTE) of 30% at 20 mm distance and implanted antenna gain of -23 dBi are confirmed via simulations and measurements.","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":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87130459","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.2013.6756202
Wei Xiao, Rui-Peng Huang, Wei-Lue Lin, Y. Ban
A simple octa-band monopole antenna for LTE/WWAN smart phone applications is proposed. Occupying a small size of 15×45×4 mm3 in the top corner of the main system circuit board, the proposed antenna is formed by a rectangle-loop-loaded (RLL) meandered line, a vertical planar strip and a matching circuit. With the presences of the proposed structure configuration, two board operating bandwidths, including 1710-2690 and 698-960 MHz are achieved respectively. Good radiation characteristics of the proposed antenna are given to prove the reliability of the scheme, which is very promising for smart phone applications in the 4G LTE communication.
{"title":"Simple octa-band monopole antenna with rectangular-loop-loaded meandered line for LTE/WWAN smartphone applications","authors":"Wei Xiao, Rui-Peng Huang, Wei-Lue Lin, Y. Ban","doi":"10.1109/IMWS-BIO.2013.6756202","DOIUrl":"https://doi.org/10.1109/IMWS-BIO.2013.6756202","url":null,"abstract":"A simple octa-band monopole antenna for LTE/WWAN smart phone applications is proposed. Occupying a small size of 15×45×4 mm3 in the top corner of the main system circuit board, the proposed antenna is formed by a rectangle-loop-loaded (RLL) meandered line, a vertical planar strip and a matching circuit. With the presences of the proposed structure configuration, two board operating bandwidths, including 1710-2690 and 698-960 MHz are achieved respectively. Good radiation characteristics of the proposed antenna are given to prove the reliability of the scheme, which is very promising for smart phone applications in the 4G LTE communication.","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":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85110820","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：