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2014 IEEE International Wireless Symposium (IWS 2014)最新文献

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Parallel adaptive cross approximation for accelerating time-domain method of moments 加速时域矩法的平行自适应交叉逼近
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-07-28 DOI: 10.1109/IEEE-IWS.2014.6864252
Ying Yan, Xunwang Zhao, C. Liang, Zhewang Ma
{"title":"Parallel adaptive cross approximation for accelerating time-domain method of moments","authors":"Ying Yan, Xunwang Zhao, C. Liang, Zhewang Ma","doi":"10.1109/IEEE-IWS.2014.6864252","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864252","url":null,"abstract":"In this paper, the parallel Adaptive Cross Approximation (ACA) algorithm is introduced to reduce the memory and CPU time requirements for solving the Time-Domain Integral Equation (TDIE). Marching-On-in-Degree (MOD) is selected to be the equation solver so as to avoid the late-time oscillation in Marching-On-in-Time (MOT); ACA is a purely algebraic algorithm whose formulation and implementation are independent of the integral kernel (Green's function) so that it can be easily applied to TDIE to reduce the memory requirement. Meanwhile, parallel technique based on partitioning the octree's group is employed either to accelerate the computation. Through some numerical examples, the proposed method is proven feasible and efficient.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127003838","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
An empirical path loss model in the indoor stairwell at 2.6 GHz 2.6 GHz时室内楼梯间路径损耗的经验模型
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-07-28 DOI: 10.1109/IEEE-IWS.2014.6864218
Ye Wang, Xiao-Lei Wang, Yan Qin, Yang Liu, Wen‐Jun Lu, Hongbo Zhu
{"title":"An empirical path loss model in the indoor stairwell at 2.6 GHz","authors":"Ye Wang, Xiao-Lei Wang, Yan Qin, Yang Liu, Wen‐Jun Lu, Hongbo Zhu","doi":"10.1109/IEEE-IWS.2014.6864218","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864218","url":null,"abstract":"A novel empirical path loss model for indoor stairwell environment is presented. The model is based on the multiple-input-multiple-output (MIMO) measurements at 2.6 GHz. The model is divided into two scenarios, i.e., line-of-sight (LOS) and non-LOS (NLOS). In the case of LOS, the path loss exponent n is dependent with the increasing of frequency slightly and is fitted by the frequency using power function. In the NLOS one, the path loss on different steps in the same part of the stairwell is similar, while it has an obvious increasing when the stairwell makes a turn. The statistical, frequency-dependent parameters (i.e, PLstep and PLplatform) are defined to describe to path loss characteristics.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114395769","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: 13
430 GHz bandpass filter incorporating synthetic transmission lines in standard 0.13 μm CMOS 430ghz带通滤波器，采用标准0.13 μm CMOS合成传输线
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864262
Xin Wang, Hsien-Shun Wu, Ching-Kuang C. Tzuang
{"title":"430 GHz bandpass filter incorporating synthetic transmission lines in standard 0.13 μm CMOS","authors":"Xin Wang, Hsien-Shun Wu, Ching-Kuang C. Tzuang","doi":"10.1109/IEEE-IWS.2014.6864262","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864262","url":null,"abstract":"A third-order transmission line (TL) based terahertz bandpass filter (BPF) is presented in this paper. All the resonators are implemented by using the synthetic transmission lines, so-called the complementary-conducting strip transmission line (CCS-TL). The guiding characteristics of the CCS-TL with different size of the periods are theoretically extracted for the filter design. The comparisons between simulated and measured results show that the prototype in 0.13 μm 1P8M CMOS technology has an insertion-loss of 2.4 dB and a fractional bandwidth of 26%, with a 3.5% offset of the center frequency.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"39 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128439014","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
Localization of handheld UHF RFID reader using reference tags in 3D environment 在3D环境中使用参考标签的手持式UHF RFID阅读器的定位
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864210
Taewon Kim, Joshua J. Song, Jongbom Ri
{"title":"Localization of handheld UHF RFID reader using reference tags in 3D environment","authors":"Taewon Kim, Joshua J. Song, Jongbom Ri","doi":"10.1109/IEEE-IWS.2014.6864210","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864210","url":null,"abstract":"It is very important to determine the location of a handheld UHF RFID reader unit in the management of library or warehouse based on RFID system. In reality, the management of the library or warehouse is performed in the 3D space. It is necessary to determine the location of the handheld UHF RFID reader in 3D indoor environment. The localization of the handheld UHF RFID reader can be done using the reader with a function of receiving the backscattered signal from tags. The location of the reader unit in indoor environment can be determined by one method that detects tag ID nearby the reader using RSSI of backscattered signal from 3D arrayed reference tags. In this paper, we proposed one method that a handheld UHF RFID reader unit determines its location by itself using 3D arrayed reference tags fixed on the shelves placed in the libraries or warehouses and proved this method through experiment results.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129059377","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
A constant absolute bandwidth filter with dual independent tunable passbands 具有双独立可调通带的恒定绝对带宽滤波器
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864192
Dinghong Jia, Q. Feng, Xiaoguo Huang, Qianyin Xiang
{"title":"A constant absolute bandwidth filter with dual independent tunable passbands","authors":"Dinghong Jia, Q. Feng, Xiaoguo Huang, Qianyin Xiang","doi":"10.1109/IEEE-IWS.2014.6864192","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864192","url":null,"abstract":"This paper presents a novel procedure to the design of independent tunable dual-band bandpass filters with constant absolute 3-dB bandwidths. Only two bias voltages are required to control the locations of the passbands, respectively. Two kinds of dual-mode resonators are proposed to be selected while designing the passbands. Based on different parameters of even- and odd-modes, there are four types of dual-band selectivity to choose. Three transmission zeros are introduced at the adjacent of passbands, resulting sharp skirt. To demonstrate the design method, a dual-band tunable filter with constant absolute bandwidths was fabricated and measured. From the experimentally results, it was found that the proposed filter exhibited the first passband center frequency tunable range from 1.70 to 2.27 GHz with a constant 3-dB absolute bandwidth 130 ± 10 MHz and the second passband center frequency tunable range from 2.25 to 2.77 GHz with a constant 3-dB absolute bandwidth 80 ± 10 MHz.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123815149","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
A novel broadband omnidirectional dual polarized MIMO antenna for 4G LTE applications 一种用于4G LTE应用的新型宽带全向双极化MIMO天线
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864225
F. Jolani, Yiqiang Yu, Z. Chen
{"title":"A novel broadband omnidirectional dual polarized MIMO antenna for 4G LTE applications","authors":"F. Jolani, Yiqiang Yu, Z. Chen","doi":"10.1109/IEEE-IWS.2014.6864225","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864225","url":null,"abstract":"A low-profile broadband omnidirectional multiple-input and multiple-output (MIMO) antenna with dual polarization is presented, which provides polarization diversity for the 4G Long Term Evolution (LTE) communication systems, networks, and base stations. It consists of two orthogonally polarized radiating elements with separate feeds. The horizontally-polarized element is comprised of four pairs of flag-shaped dipoles, four parasitical strips, and a balun with tapered striplines for balance-unbalance transition. It has a fractional bandwidth of 55% covering from 1.7 GHz to 3.0 GHz with return loss greater than 10 dB and an overall size of 43×43×1.6 mm3. The vertically polarized element consists of a discone antenna, a round sleeve, and a top-loading ring shorted to the ground-plane for bandwidth enhancement. It has a fractional bandwidth of 137% covering from 671 MHz to 3580 MHz, and an overall volume of 170×170×56 mm3. The measurement results show both antenna elements exhibit smooth gain over the operational bandwidth. In addition, the geometrical shape and compactness of the proposed design, along with the omnidirectional radiation patterns, makes it ideal for ceiling or surface-mounted 4G LTE applications.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127754951","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: 23
Design and linearization of high-efficiency inverse class-F RF power amplifiers 高效反f类射频功率放大器的设计与线性化
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864269
Yang Wang, Taijun Liu, Yan Ye, Qian Xu, Ruiyang Li, Y. Guo, Tianyi Pan
{"title":"Design and linearization of high-efficiency inverse class-F RF power amplifiers","authors":"Yang Wang, Taijun Liu, Yan Ye, Qian Xu, Ruiyang Li, Y. Guo, Tianyi Pan","doi":"10.1109/IEEE-IWS.2014.6864269","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864269","url":null,"abstract":"This paper presents design and linearization of an inverse class-F RF power amplifier using a GaN HEMT transistor, which is operated at the band of 910MHz-950MHz. A harmonic control network is utilized to compensate the parasitic effect brought from the parasitic parameters network. The measured results with a 930-MHz continuous-wave (CW) signal illustrated that highly efficient operation is achieved. The saturated drain efficiency and power-added-efficiency (PAE) reached 81.6% and 77.6% respectively. At the whole operation band, the drain efficiency was more than 77.5% and the output power is around 40dBm. The RF power amplifier is linearized with a memory-polynomial based digital predistorter while applying a three-carrier WCDMA signal. A 10 dB adjacent channel leakage ratio (ACPR) improvement is obtained.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125773130","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
44-GHz, 0.5-V compact power detector IC in 65-nm CMOS 44 ghz, 0.5 v紧凑型功率检测器IC, 65nm CMOS
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864216
Kangyang Xu, Xin Yang, Wei Wang, T. Yoshimasu
{"title":"44-GHz, 0.5-V compact power detector IC in 65-nm CMOS","authors":"Kangyang Xu, Xin Yang, Wei Wang, T. Yoshimasu","doi":"10.1109/IEEE-IWS.2014.6864216","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864216","url":null,"abstract":"This paper presents an ultra-wideband and ultra-low-voltage compact power detector IC for microwave and millimeter-wave applications. The power detector circuit includes an nMOSFET differential pair with resistive feedback and a pMOSFET buffer. The power detector IC was designed, fabricated and fully evaluated using Fujitsu 65-nm CMOS technology. The detector IC exhibits an operation frequency from 100 MHz to 44 GHz at an operation voltage of only 0.5 V. In addition, the detector IC exhibits a minimum detectable power of -15 dBm with high linearity.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121840902","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 2.285–3.195 GHz electrical tunable bandstop filter with constant absolute bandwidth 具有恒定绝对带宽的2.285-3.195 GHz电可调谐带阻滤波器
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864214
Qianyin Xiang, Q. Feng, Xiaoguo Huang, Dinghong Jia
{"title":"A 2.285–3.195 GHz electrical tunable bandstop filter with constant absolute bandwidth","authors":"Qianyin Xiang, Q. Feng, Xiaoguo Huang, Dinghong Jia","doi":"10.1109/IEEE-IWS.2014.6864214","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864214","url":null,"abstract":"In this paper, a tunable bandstop filter with constant absolute bandwidth is proposed based on electric coupling compensation of tunable capacitor network. The equivalent circuit model of the tunable capacitor network is presented to study the tunable mechanism. The electric coupling factor of the tunable capacitor network increases while the tunable capacitor increasing. This mechanism can be used to compensate the bandwidth of the tunable bandstop filter. In our work semiconductor varactor diode loaded microstrip LC resonator is adopted to design the tunable filter. Each resonator requires only one varactor diode for both central frequency and resonator coupling coefficient control. The S-parameters and group delays of the tunable bandstop filter are presented. The measurement shows that the -30 dB absolute bandwidth varies from 371 MHz to 305 MHz while the central frequency of the stopband varying from 3.195 GHz to 2.285 GHz.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115932137","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: 7
Ultra wide band power amplifier for miniaturized antennas 用于微型天线的超宽带功率放大器
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864260
M. Hamouda, G. Fischer, R. Weigel, T. Ussmueller
{"title":"Ultra wide band power amplifier for miniaturized antennas","authors":"M. Hamouda, G. Fischer, R. Weigel, T. Ussmueller","doi":"10.1109/IEEE-IWS.2014.6864260","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864260","url":null,"abstract":"This work presents the design and the manufacturing of an ultra wide band power amplifier specially designed to deliver maximum available power to a miniaturized antenna developed for biomedical applications. The chip is designed using a low cost 0.25μm 95GHz fmax SiGe-HBT-BiCMOS process technology. The amplifier operates from 1.5GHz up to 10GHz that gives the advantage of having high resolution radar system. The amplifier has a low output impedance to match the antenna's impedance. The measurements of the chip are performed in 50Ω system to extract the scattering parameters and simulate it with the antenna. The estimated gain is 11dB with input reflection coefficient less -10dB and serves as a matching network between the 50Ω input and the low impedance antenna. The maximum estimated output power of the amplifier is 5.5dBm at frequency 8GHz with power added efficiency of 3%. The chip consumes a low power of 96mW and has an area of 0.84mm2.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115798401","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
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