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2018 IEEE MTT-S International Wireless Symposium (IWS)最新文献

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Multi-coil high efficiency wireless power transfer system against misalignment 多线圈高效无线电力传输系统
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-07-02 DOI: 10.1109/IEEE-IWS.2018.8400877
Chen Xu, Y. Zhuang, Hongjian Han, Chaoyun Song, Yi Huang, Jiafeng Zhou
{"title":"Multi-coil high efficiency wireless power transfer system against misalignment","authors":"Chen Xu, Y. Zhuang, Hongjian Han, Chaoyun Song, Yi Huang, Jiafeng Zhou","doi":"10.1109/IEEE-IWS.2018.8400877","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400877","url":null,"abstract":"The power transfer efficiency of magnetic-resonance coupled wireless power transfer (WPT) systems is sensitive to the alignment of coils. In this paper, a novel multi-coil WPT system is proposed to enhance power transfer efficiency. It can overcome the misalignment problem and maintain high power transfer efficiency. The proposed coil loop structure can provide a strong magnetic resonance coupling between the Tx and Rx coils. There are four induvial resonators applied in the system and it demonstrates that at least a pair of coupled resonators in several misaligned conditions could realize high power transfer efficiency over a misaligned distance. The experimental results show that the proposed multi-loop WPT system can achieve 90.2% peak efficiency when the coils are well aligned. Mean-while, this WPT system maintains over 70% efficiency over a misalignment distance from 0 to 55 mm, which is about 66% of the length of the Rx board. The proposed WPT system could be used either in implant devices for biomedical healthcare and treatment or for electric vehicles charging systems.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123378463","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}
引用次数: 12
An indoor multipath-assisted single-anchor UWB localization method 一种室内多路径辅助单锚超宽带定位方法
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-07-02 DOI: 10.1109/IEEE-IWS.2018.8400983
M. H. Jespersen, D. E. Serup, M. H. Nielsen, M. H. Hannesbo, Robin J. Williams, K. Nielsen, J. Mikkelsen, M. Shen
{"title":"An indoor multipath-assisted single-anchor UWB localization method","authors":"M. H. Jespersen, D. E. Serup, M. H. Nielsen, M. H. Hannesbo, Robin J. Williams, K. Nielsen, J. Mikkelsen, M. Shen","doi":"10.1109/IEEE-IWS.2018.8400983","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400983","url":null,"abstract":"In this paper, an indoor Ultra Wide Band (U localization system relying on a single-anchor setup is prese Conventional UWB localization systems require at least i anchors for trilateration, which leads to high system complexity and cost. Hence new technologies, such as the Virtual An (VA) approach are emerging to achieve single-anchor localiza The VA concept models Multipath Components (MPCs individual distance measurements thus exploiting reflections the environment to aid the accuracy of the localization. Exi single-anchor approaches require a priori information of pre” tag positions to estimate the current tag position. The novelty of this paper is an initialization method that enables estimate tag position without the use of a priori position information. The proposed solution is validated using both simulations and measurements. Both simulations and measurements have shown positive results, which indicates that single-anchor location is feasible.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132669554","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}
引用次数: 5
K-band combined GaAs monolithic Doherty power amplifier k波段组合砷化镓单片多尔蒂功率放大器
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-07-02 DOI: 10.1109/IEEE-IWS.2018.8400882
R. Quaglia, V. Camarchia, M. Pirola
{"title":"K-band combined GaAs monolithic Doherty power amplifier","authors":"R. Quaglia, V. Camarchia, M. Pirola","doi":"10.1109/IEEE-IWS.2018.8400882","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400882","url":null,"abstract":"This paper presents the design, simulations, and measurements of a 35 dBm K-band Doherty power amplifier, fabricated on 0.15μm GaAs monolithic technology of Qorvo. The power amplifier is based on combining on-chip two Doherty modules with a matching power combiner. To demonstrate the power scaling and gain a better insight into the design, the single Doherty module has been fabricated and characterized as well. The Doherty output matching is designed for maximizing the bandwidth and minimizing the components count, with the output capacitance of the active devices determining the impedance inverter impedance. The combined Doherty shows an output power of 35 dBm at 24 GHz, that is almost exactly 3 dB larger than the single Doherty module power module, and with a 6 dB OBO efficiency of 27%, and a gain of 11.5dB. It compares well with the state of the art, representing the highest power GaAs Doherty at similar frequencies.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125458201","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}
引用次数: 4
Characterization of damper-to-damper wireless channel in small cars 小型汽车阻尼器对阻尼器无线信道的特性
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-06-29 DOI: 10.1109/IEEE-IWS.2018.8401014
C. A. Costa, Miguel Dheans, P. Baltus, Hao Gao
{"title":"Characterization of damper-to-damper wireless channel in small cars","authors":"C. A. Costa, Miguel Dheans, P. Baltus, Hao Gao","doi":"10.1109/IEEE-IWS.2018.8401014","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8401014","url":null,"abstract":"The increasing use of Intra-Vehicular Wireless Sensor Networks (IVWSNs) in smart cars has enabled advances on Intelligent Transportation System (ITS) and also extended electric cars driving range by reducing cable weight. Intra-vehicular wireless systems have been characterized at 2.4 GHz and UHF bands. However, works on channel characterization of damper-to-damper wireless systems are still limited. This paper presents a damper-to-damper path loss characterization at 2.4 GHz frequency band for small cars. Dynamic on-field measurements on damper-to-damper antennas are used to derive path loss specification and coherence bandwidth for an intra-vehicular wireless communication system. Static measurements show the impact of antenna polarization in damper-to-damper path loss.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114464365","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}
引用次数: 5
An X-band low voltage cross-coupled voltage-controlled oscillator IC in 56-nm SOI CMOS 一种56纳米SOI CMOS x波段低压交叉耦合压控振荡器集成电路
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-06-29 DOI: 10.1109/IEEE-IWS.2018.8400967
Lei Sun, Xiao Xu, T. Yoshimasu
{"title":"An X-band low voltage cross-coupled voltage-controlled oscillator IC in 56-nm SOI CMOS","authors":"Lei Sun, Xiao Xu, T. Yoshimasu","doi":"10.1109/IEEE-IWS.2018.8400967","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400967","url":null,"abstract":"An X-band voltage-controlled oscillator (VCO) IC is presented in this paper for low voltage operation. The LC-VCO IC consists of a cross-coupled pMOSFET pair, an LC tank circuit and buffer amplifiers. The LC-VCO IC is designed, fabricated and fully evaluated on-wafer using 56-nm SOI CMOS technology. The fabricated VCO IC has exhibited a measured phase noise of −119.02 dBc/Hz at 5 MHz offset from the 9.8 GHz carrier frequency at an operation voltage of only 0.5 V.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"197 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122538559","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}
引用次数: 2
A 60 GHz low noise variable gain amplifier with small noise figure and IIP3 variation in a 40-nm CMOS technology 一种采用40纳米CMOS技术的60 GHz低噪声可变增益放大器，具有小噪声系数和IIP3变化
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-06-29 DOI: 10.1109/IEEE-IWS.2018.8400880
Bindi Wang, Hao Gao, Rainier van Dommele, M. Matters-Kammerer, P. Baltus
{"title":"A 60 GHz low noise variable gain amplifier with small noise figure and IIP3 variation in a 40-nm CMOS technology","authors":"Bindi Wang, Hao Gao, Rainier van Dommele, M. Matters-Kammerer, P. Baltus","doi":"10.1109/IEEE-IWS.2018.8400880","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400880","url":null,"abstract":"This paper presents the design and measurement of a low noise variable gain amplifier (VGA) over the frequency band of 57 GHz and 64 GHz, using 40-nm CMOS technology. The design applies an inductive degeneration technique for simultaneously noise and power matching, a layout gate inductance for gain frequency extension, and current steering technique for gain tuning. The comparison of a low noise amplifier (LNA) and a low noise VGA is done, in terms of noise figure and linearity (IIP3). The LNA achieves 6.7 dB gain and 4.3 dB noise figure (NF) at 60 GHz, while consuming 12 mA from a 1.1 V supply. The IIP3 of the LNA is −12.8 dBm. The VGA has an S21 of 6.67 dB (maximum) and 5.1 dB NF at 58 GHz. The gain tuning range is 6 dB and the NF deviation is 0.8 dB at 60 GHz and the IIP3 is −7.66 dBm at the maximum gain state. The supply voltage of the VGA is 1.1 V and the DC current is 11 mA.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128685966","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}
引用次数: 10
Compact liquid crystal based phase shifter with integrated bias tees 集成偏置三通的紧凑型液晶移相器
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-06-29 DOI: 10.1109/IEEE-IWS.2018.8400930
Longzhu Cai, D. Chu
{"title":"Compact liquid crystal based phase shifter with integrated bias tees","authors":"Longzhu Cai, D. Chu","doi":"10.1109/IEEE-IWS.2018.8400930","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400930","url":null,"abstract":"Two electrically controlled tunable phase shifters based on liquid crystal (LC) material have been presented. Due to the large size and heavy weight of used external bias tees in driving circuits of LC based microwave devices, we fabricated an LC based phase shifter with integrated mini bias tees in order to broaden its potential uses. The differential phase shift up to 270°at 10 GHz was achieved in experiment under a bias voltage of 20 Vrms. For comparison, a non-integration phase shifter was also fabricated and it possesses notable performance. In the preliminary design with bias tees integrated, the mechanical layout and circuit design, as well as the soldering of the capacitors and mini bias tees were very challenging. An optimized phase shifter design with integrated mini bias tees will be shown in the near future.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130234068","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}
引用次数: 0
Compact 28-GHz two-dimensionally scanning multibeam array with sidelobe suppression 具有旁瓣抑制的紧凑28-GHz二维扫描多波束阵列
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-06-29 DOI: 10.1109/IEEE-IWS.2018.8400854
Ji-wei Lian, Y. Ban, You-Quan Wu, Le-Hao Zhong
{"title":"Compact 28-GHz two-dimensionally scanning multibeam array with sidelobe suppression","authors":"Ji-wei Lian, Y. Ban, You-Quan Wu, Le-Hao Zhong","doi":"10.1109/IEEE-IWS.2018.8400854","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400854","url":null,"abstract":"This work presents a compact 28-GHz two-dimensionally (2-D) scanning multibeam array antenna with sidelobe suppression in substrate integrated waveguide (SIW) technology. The proposed antenna is comprised of a 2 × 8 slot array and a beam-forming network (BFN), which is realized by combining two dual-layer 4 × 8 Butler matrixes (BMs) and four 90° couplers. The introduced 4 × 8 BM can help suppress the sidelobe level (SLL) in the E-plane so that the anti-interference capability in the E-plane can be improved. Taking the complicated structure of the classic 4 × 8 BM into account, some modifications of the BM are conducted to achieve better compactness.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133101663","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}
引用次数: 1
A compact millimeter wave (mmWave) mid-field over the air (OTA) RF performance test system for 5G massive MIMO devices 用于5G大规模MIMO设备的紧凑型毫米波(mmWave)空中中场(OTA)射频性能测试系统
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-05-06 DOI: 10.1109/IEEE-IWS.2018.8400995
H. Kong, Zhu Wen, Ya Jing, M. Yau
{"title":"A compact millimeter wave (mmWave) mid-field over the air (OTA) RF performance test system for 5G massive MIMO devices","authors":"H. Kong, Zhu Wen, Ya Jing, M. Yau","doi":"10.1109/IEEE-IWS.2018.8400995","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400995","url":null,"abstract":"A 5G mmWave Massive MIMO device needs to perform the phase coherency calibration and RF parametric measurement over the air (OTA). The device size and the array size make it very challenging to do RF parametric measurement in the true far field OTA environment from the space, link budget and cost aspects. To meet the requirement on very compact size, a mmWave mid-field OTA RF performance test system is designed in this paper. This system can do the phase coherency calibration and support the RF parametric measurements per the 3GPP requirements. An overview of the system design challenges and measurement approaches is provided together with the experiment validation of the functionalities of the system to prove the effectiveness of the system for 5G massive MIMO device OTA RF calibration and parametric measurement.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124442233","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}
引用次数: 11
Tunable terahertz absorber using double-layer decussate graphene ribbon arrays 可调谐太赫兹吸收器，采用双层交叉石墨烯带状阵列
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-05-06 DOI: 10.1109/IEEE-IWS.2018.8400805
Fang Zeng, L. Ye, Xiong Xu, Xiaofan Yang
{"title":"Tunable terahertz absorber using double-layer decussate graphene ribbon arrays","authors":"Fang Zeng, L. Ye, Xiong Xu, Xiaofan Yang","doi":"10.1109/IEEE-IWS.2018.8400805","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400805","url":null,"abstract":"A tunable graphene-based terahertz perfect absorber consists of periodic double-layer decussate graphene ribbons is proposed. In the proposed absorber, the two arrays of graphene ribbons are separated by the dielectric zro2. From the bottom up, the multi-layer absorber structure is made up of Au/ zro2/graphene materials respectively. The reflection of all the electromagnetic waves is effectively restricted in the interlayer between the graphene ribbons and the metal plate, and the transmission of electromagnetic waves is also suppressed due to thick metal base. By varying the chemical potential graphene, the peak absorption frequency can be flexibly tuned. By changing the geometric parameters of the structure, more than 99% absorbance can be achieved. Moreover, the graphene absorber has a simple structure and can be easily manufactured by an existing manufacturing process, such absorber will benefit the fabrication of detecting, sensing and optoelectronic devices.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125232287","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}
引用次数: 2
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