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2016 IEEE MTT-S International Wireless Symposium (IWS)最新文献

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Research on spherical antenna array imaging by simulation 球面天线阵列成像仿真研究
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585466
Liu Lianghuan, Wang Jiatong, Chen Zhangyou, Wu Xiongbin
{"title":"Research on spherical antenna array imaging by simulation","authors":"Liu Lianghuan, Wang Jiatong, Chen Zhangyou, Wu Xiongbin","doi":"10.1109/IEEE-IWS.2016.7585466","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585466","url":null,"abstract":"This paper mainly studies on the spherical array imaging with spatial matched filtering. The azimuth resolution of circular trace scanning synthetic aperture radar is calculated. The factors affecting the azimuth resolution of the spherical array imaging are discussed, and a method of amplitude weighting is proposed to restrain the side lobe. Finally, the imaging effect of two kinds of array elements distribution is compared.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126358298","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
Evaluation of transformer and capacitor coupling in W-band broadband CMOS power amplifiers w波段宽带CMOS功率放大器中变压器和电容耦合的评价
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585404
T. Tran, S. Vehring, Y. Ding, A. Hamidian, G. Boeck
{"title":"Evaluation of transformer and capacitor coupling in W-band broadband CMOS power amplifiers","authors":"T. Tran, S. Vehring, Y. Ding, A. Hamidian, G. Boeck","doi":"10.1109/IEEE-IWS.2016.7585404","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585404","url":null,"abstract":"This paper evaluates the transformer and capacitor coupling used in W-band broadband CMOS power amplifiers. Therefore two four-stage differential power amplifiers were implemented in 40 nm CMOS technology one with transformer coupling and one with capcitor coupling. In order to achieve broadband performance a complex output matching network consisting either of transmission lines and transformer or transmission lines and capacitor is employed. The power amplifier core and output matching network are optimized for the best compromise between bandwidth, output power and power-added-efficiency. Both implementations are measured and compared to the state-of-the-art. For both cases a bandwith nearly over the whole W-band is realized. The transformer-coupled power amplifier achieves output power of 10 dBm with 10 % power-added-efficiency while the capacitor-coupled power amplifier shows output power of 8 dBm with 8 % power-added-efficiency.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121586617","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: 3
Real-time digital predistortion for radio frequency power amplifier linearization 射频功率放大器线性化的实时数字预失真
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585463
S. Ferguson, A. Chopra
{"title":"Real-time digital predistortion for radio frequency power amplifier linearization","authors":"S. Ferguson, A. Chopra","doi":"10.1109/IEEE-IWS.2016.7585463","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585463","url":null,"abstract":"In this paper, a system is proposed for real-time calculation of digital predistortion (DPD) coefficients to linearize wideband radio frequency (RF) power amplifiers (PAs). The proposed system leverages the commercially available National Instruments (NI) PXIe-5646R vector signal transceiver (VST) platform. The VST is a single module RF instrument that combines a 200MHz instantaneous vector signal analyzer (VSA) and vector signal generator (VSG) with a shared Xilinx LX240T field-programmable gate array (FPGA). The FPGA is used to perform look-up table (LUT) predistorter estimation and predistortion in real-time. The proposed system is shown to reduce the time to generate a predistorted waveform by over two orders of magnitude compared to a software implementation. Furthermore, the linearity achieved with the proposed FPGA implementation closely matches a traditional software-based approach, with 15dB improvement in adjacent channel leakage ratio (ACLR) and a 3x improvement in error vector magnitude (EVM) for a 3G mobile handset power amplifier.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121644271","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: 3
Performance analysis of soft decision spectrum sensing based on multi-bit quantization 基于多比特量化的软决策频谱感知性能分析
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585417
Wu Hao, Zhao Hangsheng, Chen Yong, Liu Yong-xiang, Zhang Jian-zhao
{"title":"Performance analysis of soft decision spectrum sensing based on multi-bit quantization","authors":"Wu Hao, Zhao Hangsheng, Chen Yong, Liu Yong-xiang, Zhang Jian-zhao","doi":"10.1109/IEEE-IWS.2016.7585417","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585417","url":null,"abstract":"In cognitive radio networks, soft decision spectrum sensing process the statistical measurement values sent by cognitive users through control channels in cognitive base station, and determine the activity of primary users. Owing to the limited bandwidth of the control channel, cognitive users shall quantify the statistical measurement values before sending it to cognitive base station. This paper put forwards the soft decision spectrum sensing based on multi-bit quantization, and analyzes the sensing performance of the algorithm in different quantization bits. Meantime the algorithm takes the quantization errors into account, and establishes the closed form expression for the detection performance. Simulation results show that the sensing performance of the soft decision spectrum sensing is very close to the performance without quantization when the number of quantization bits are great than four.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129995529","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 terahertz Fabry-Pérot modulator using charge injection-induced insulator-metal transition in vanadium dioxide 在二氧化钒中使用电荷注入诱导绝缘体-金属跃迁的太赫兹法布里-帕姆罗调制器
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585435
O. Fawole, M. Tabib-Azar
{"title":"A terahertz Fabry-Pérot modulator using charge injection-induced insulator-metal transition in vanadium dioxide","authors":"O. Fawole, M. Tabib-Azar","doi":"10.1109/IEEE-IWS.2016.7585435","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585435","url":null,"abstract":"We report the use of Insulator-Metal Transition (IMT) of vanadium dioxide (VO<sub>2</sub>) to modulate Fabry-Pérot resonances in a terahertz Fabry-Pérot resonator. Our two-plate Fabry-Pérot modulator consists of one partially reflecting plate of monolayer graphene on a polymer substrate, and another plate of VO<sub>2</sub>-integrated copper electrodes. VO<sub>2</sub>, a strongly correlated electron system, undergoes IMT upon application of external stimuli. In our Fabry-Pérot modulator device, we stimulated VO<sub>2</sub> IMT by injecting charges into the VO<sub>2</sub> via copper electrodes to realize a terahertz modulator. With 500mA DC at 12 V, we obtained 50% amplitude modulation depth at 0.884 THz.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133964598","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
Low-dispersion metamaterial-based phase shifters with reduced size and number of MEMS switches 基于低色散超材料的移相器，减小了MEMS开关的尺寸和数量
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585412
V. Gholizadeh, M. J. Asadi, Y. Ning, C. Palego, J. Hwang, D. Scarbrough, C. Goldsmith
{"title":"Low-dispersion metamaterial-based phase shifters with reduced size and number of MEMS switches","authors":"V. Gholizadeh, M. J. Asadi, Y. Ning, C. Palego, J. Hwang, D. Scarbrough, C. Goldsmith","doi":"10.1109/IEEE-IWS.2016.7585412","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585412","url":null,"abstract":"This paper reports a low-dispersion metamaterial-based 3-bit phase shifter which occupies an area of approximately 5 mm2 and uses only six microelectromechanical systems (MEMS) switches. The phase shifter is based on a coplanar slow-wave structure with defected ground and comprises three unit cells of 180°, 90° and 45° phase shifts, respectively. Each unit cell uses two single-pole-single-throw MEMS capacitive switches in series and parallel configurations, respectively, to switch between right-handed (low-pass) and left-handed (high-pass) states for the specified phase shift. Three-dimensional finite-element electromagnetic simulation was used to help optimize the compact layout. The worst-case performance across the band of 24-28 GHz was simulated to have less than 9° root-mean-square phase error, less than 1.7 dB insertion loss, and greater than 13 dB return loss.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134197037","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
A planar broadband beam steering array with low cost 一种低成本的平面宽带波束控制阵列
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585425
Luqi Di, Xue-xia Yang, Yingjie Yu
{"title":"A planar broadband beam steering array with low cost","authors":"Luqi Di, Xue-xia Yang, Yingjie Yu","doi":"10.1109/IEEE-IWS.2016.7585425","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585425","url":null,"abstract":"A broadband beam steering smart planar array fed by the parabolic reflector of the substrate integrated waveguide (SIW) is proposed in this paper. The radiation element is continuous transverse stub (CTS) which are periodically arrayed on the plane waveguide. Both the CTS and the parabolic feed structure have broadband features. The beam steering directions are changeable with the different frequencies within the operation bandwidth. A 16-element array is simulated to validate the design. The simulation results show that the relative bandwidth of the reflection coefficient less than -10 dB is 69.9% (8.1 GHz-16.8 GHz) with the center frequency of 12.0 GHz. The gain at the broadside is 19.57 dBi with the first sidelobe level of -12.4 dB and the 3 dB beam width of 5.0°. The scanning angle range varies from -51° to 18° depending on frequency. This beam steering array could be applied in X band, Ku band and millimeter wave bands.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"232 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116493986","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
Visible light communication using the flash light LED of the smart phone as a light source and its application in the access control system 利用智能手机的LED闪光灯作为可见光通信光源及其在门禁系统中的应用
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585481
Linyong Fan, Qunxing Liu, Chunxu Jiang, Huawei Xu, J. Hu, Dongxiang Luo, Zhiyuan He, Qingli Huang
{"title":"Visible light communication using the flash light LED of the smart phone as a light source and its application in the access control system","authors":"Linyong Fan, Qunxing Liu, Chunxu Jiang, Huawei Xu, J. Hu, Dongxiang Luo, Zhiyuan He, Qingli Huang","doi":"10.1109/IEEE-IWS.2016.7585481","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585481","url":null,"abstract":"Visible light communication (VLC) is one of the most popular research points of the short range wireless communication. Due to the high efficiency, long lifetime, and fast switching characteristics of LEDs, LEDs are ideal light source for the VLC. In this paper, the flash light LED of the smart phone has been studied and used as the light source for the VLC. The encoding and decoding methods appropriate for the flash light have been proposed and demonstrated. This VLC technique has been applied in the access control system, which is simple, reliable, convenient, and low cost, and can be a supplement to the conventional access control system.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"2674 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134112684","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: 16
Very low profile multibranch antenna with high-pass matching circuit for LTE/WWAN tablet computer device LTE/WWAN平板电脑设备的极低轮廓多支路天线与高通匹配电路
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585479
Liu Luan, Li Jiu-sheng
{"title":"Very low profile multibranch antenna with high-pass matching circuit for LTE/WWAN tablet computer device","authors":"Liu Luan, Li Jiu-sheng","doi":"10.1109/IEEE-IWS.2016.7585479","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585479","url":null,"abstract":"A low-profile multibranch antenna for the LTE/WWAN tablet computer device is presented. The antenna consists of three branches, an integrated matching circuit and a folded radiation patch. The matching circuit greatly enhance the low-band bandwidth (covering 698~960MHz) without increasing the antenna size. Detail operating principle of the antenna is described in this study. The antenna is disposed on a 0.8mm thick FR4 substrate of size 8 × 40 × 23 mm3. The proposed antenna is fabricated and tested.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124725189","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
Fabrication and measurement of millimeter-wave on-chip MIMO antenna for CMOS RFIC's CMOS RFIC毫米波片上MIMO天线的制作与测量
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585434
Liwen Jing, C. Rowell, S. Raju, M. Chan, R. Murch, C. Yue
{"title":"Fabrication and measurement of millimeter-wave on-chip MIMO antenna for CMOS RFIC's","authors":"Liwen Jing, C. Rowell, S. Raju, M. Chan, R. Murch, C. Yue","doi":"10.1109/IEEE-IWS.2016.7585434","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585434","url":null,"abstract":"This paper presents a compact on-chip MIMO antenna design. The proposed structure consists of one folded monopole antenna operating as main antenna and one IFA antenna serving as the diversity antenna. Antenna ground is formed by connecting the idle space in the pad ring area with the ground pads and the ground plane of the circuit. The proposed antenna is fabricated with standard CMOS process. Measurement results show that the input reflection coefficient of the main antenna is lower than -10dB from 56GHz to 65GHz, covering all four channels of the WiGig standard. The diversity antenna operates in the 56 ~ 61GHz frequency range. -20dB isolation between antennas is achieved. The peak broadside gains of the main antenna and diversity antenna at 60GHz are -3.8dB and -6.1dB respectively. The simulated correlation coefficient between the main antenna and diversity antenna is smaller than 0.2 from 56GHz to 64GHz.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130406959","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
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