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2015 IEEE International Wireless Symposium (IWS 2015)最新文献

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A high efficiency, 40dBm, 728-768 MHz MMIC Doherty power amplifier using low-voltage GaAs HBT technology for LTE and active antenna system applications 一种高效，40dBm, 728-768 MHz的MMIC Doherty功率放大器，采用低压GaAs HBT技术，用于LTE和有源天线系统应用
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164596
Ahmet Aktuğ, Ahmet Değirmenci, Sebnem Sayginer
{"title":"A high efficiency, 40dBm, 728-768 MHz MMIC Doherty power amplifier using low-voltage GaAs HBT technology for LTE and active antenna system applications","authors":"Ahmet Aktuğ, Ahmet Değirmenci, Sebnem Sayginer","doi":"10.1109/IEEE-IWS.2015.7164596","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164596","url":null,"abstract":"In this paper we report on the design and measurements of 1.75× 2.45mm2 monolithic microwave integrated circuit (MMIC) Doherty power amplifier (DPA) fabricated using low-voltage, low-cost GaAs hetero-junction bipolar transistor (HBT) technology. In measurements, from 31dBm to 40dBm saturated output power higher than 43% drain efficiency is obtained across 728 to 768 MHz band. Moreover, single stage Doherty amplifier exhibits 14dB small signal gain over the band of operation. To the best of our knowledge, with low voltage GaAs HBT, the highest efficiency and saturated output power are reported in this work.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131741907","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
4-D parameter estimation in bistatic MIMO radar for near-field target localization 双基地MIMO雷达近场目标定位的四维参数估计
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164609
Erning Zhou, Hong Jiang, Hang Qi
{"title":"4-D parameter estimation in bistatic MIMO radar for near-field target localization","authors":"Erning Zhou, Hong Jiang, Hang Qi","doi":"10.1109/IEEE-IWS.2015.7164609","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164609","url":null,"abstract":"The existing target localization algorithms in bistatic multiple-input multiple-output (MIMO) radar are based on the far-field assumption. However, when the targets are located close to the transmit and receive arrays, these algorithms are no longer valid. Aiming at the problem of near-field target localization in bistatic MIMO radar, the paper presents a novel algorithm of parameter estimation based on the centro-symmetric transmit and receive arrays. Four cross-covariance matrices of the received array data are employed and the eigenvalues and eigenvectors of two constructed matrices are obtained to estimate the four-dimensional (4-D) parameters, including the direction-of-departure (DOD), the direction-of-direction (DOA), the range from transmitter to target, and the range from target to receiver. This proposed algorithm avoids spectrum peak search, therefore the amount of calculation is small. Also, the parameters can be well paired. The simulations demonstrate the effectiveness of the propose method.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134258158","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
Compact third-order dual-band bandpass filter using short-circuited stubs loaded λ/4 resonator 紧凑的三阶双带带通滤波器，使用短路的存根加载λ/4谐振器
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164566
Zhi‐Chong Zhang, Q. Chu, Lei‐Lei Qiu
{"title":"Compact third-order dual-band bandpass filter using short-circuited stubs loaded λ/4 resonator","authors":"Zhi‐Chong Zhang, Q. Chu, Lei‐Lei Qiu","doi":"10.1109/IEEE-IWS.2015.7164566","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164566","url":null,"abstract":"A novel short-circuited stubs loaded λ/4 resonator and its application to third-order dual-band bandpass filter are presented in this paper. Based on the analysis of resonance characteristics, it is found that the characteristics of the first passband can be conveniently controlled by the two loading shunt stubs, whereas that of the second passband are fixed. A third-order dual-band bandpass filter is designed and fabricated. Simulated and measured results are agreed with each other.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130362463","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
Low-RCS microstrip antenna design with CSRR etched ground 具有CSRR蚀刻地面的低rcs微带天线设计
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164572
Yi Zhao, Xiangyu Cao, Jun Gao, Wen-qiang Li, Sijia Li
{"title":"Low-RCS microstrip antenna design with CSRR etched ground","authors":"Yi Zhao, Xiangyu Cao, Jun Gao, Wen-qiang Li, Sijia Li","doi":"10.1109/IEEE-IWS.2015.7164572","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164572","url":null,"abstract":"A microstrip antenna with reduced radar cross section(RCS) is presented. Complementary split ring resonator(CSRR) is introduced to the ground for low RCS microstrip antenna design. Comparisons with reference antenna demonstrate that the proposed antenna exhibits as much as 26.2dB RCS reduction while maintains radiation performance very well.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134638825","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
Prospect of large scale 2D transition metal dichalcogenides nanophotonics for optical communications 大规模二维过渡金属二硫族化合物纳米光子学在光通信中的应用前景
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164640
Z. Ling, Rui Yang, J. Chai, Shizhen Wang, Y. Tong, Qian Zhou, X. Gong, D. Chi, K. Ang
{"title":"Prospect of large scale 2D transition metal dichalcogenides nanophotonics for optical communications","authors":"Z. Ling, Rui Yang, J. Chai, Shizhen Wang, Y. Tong, Qian Zhou, X. Gong, D. Chi, K. Ang","doi":"10.1109/IEEE-IWS.2015.7164640","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164640","url":null,"abstract":"Two-dimensional (2D) materials with innate thinness exhibit unique electronic properties different from their bulk form could open up new opportunities in a diverse electronics and photonics field. To integrate 2D layered materials for scalable manufacturing, large-area synthesis to produce high quality film with precise control of thickness and uniformity is necessary. This work reported the first demonstration of high performance 2D-TMD photodetectors realized on a large area MoS2 crystal synthesized by magnetron sputtering. Due to an inherent film strain and through MoS2 thickness tuning, the photodetectors achieved an improved performance over a wide spectral range from the visible to the near-infrared band, making it potentially useful for optical communication applications. Through integration with optical waveguides, the light-matter interactions between incident photons and 2D absorption materials could be further enhanced. When coupled with the use of 2D heterostructures where a narrow bandgap black phosphorous (BP) is sandwiched between TMDs, efficient lasing with tunable wavelengths could be achieved via radiative recombination in the active BP emission material.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132290638","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 wideband planar quasi-Yagi antenna 一种紧凑的宽带平面准八木天线
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164581
Wen-Hai Zhang, K. Tam
{"title":"A compact wideband planar quasi-Yagi antenna","authors":"Wen-Hai Zhang, K. Tam","doi":"10.1109/IEEE-IWS.2015.7164581","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164581","url":null,"abstract":"A compact wideband planar quasi-Yagi antenna is proposed. The antenna consists of a symmetrical dipole connecting with two microstrip elements and can be directly integrated with differential circuits. The return loss, radiation pattern and gain over the whole operational frequency band have been analyzed. The operation principle is also discussed. It is shown that the impedance bandwidth of the antenna is from 2.19GHz to 5.65GHz, which is about 88.3%. Stable quasi-directional radiation patterns with an average gain about 4.8dBi can be achieved. Due to its performance, the antenna can be a good candidate for ambient RF energy harvesting applications.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122408514","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
Sparse minimum mean square error(MMSE) blind beamformer 稀疏最小均方误差(MMSE)盲波束形成器
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164517
Hua Peng, N. Al-Dhahir
{"title":"Sparse minimum mean square error(MMSE) blind beamformer","authors":"Hua Peng, N. Al-Dhahir","doi":"10.1109/IEEE-IWS.2015.7164517","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164517","url":null,"abstract":"To reduce implementation cost and power consumption, a sparse minimum mean square error (MMSE) beamformer is designed using the orthogonal matching pursuit algorithm to compute the locations and weights of few selected active antenna elements and estimate the direction-of-arrival (DOA) angles and the number of sources. The estimated DOAs are used to reconstruct the received signal covariance matrix and improve robustness to small sample size effects. Simulation results demonstrate the superior performance of the proposed sparse beamformer designs compared with state-of-the-art algorithms in the literature.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127771790","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
V-band high gain SiGe power amplifier with wideband ESD protection 带宽带ESD保护的v波段高增益SiGe功率放大器
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164569
Keping Wang, Kaixue Ma, K. Yeo
{"title":"V-band high gain SiGe power amplifier with wideband ESD protection","authors":"Keping Wang, Kaixue Ma, K. Yeo","doi":"10.1109/IEEE-IWS.2015.7164569","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164569","url":null,"abstract":"This paper presents a low-power high-gain V-band power amplifier (PA) in a low-cost commercial 0.18-μm SiGe BiCMOS technology. A novel wideband ESD protection circuit is demonstrated with <;1 dB insertion loss in frequency range of 17-88 GHz. Design techniques utilized to optimize the gain and the power consumption are addressed. In the 60GHz frequency range, the designed PA achieves a peak gain of 20.8 dB under 1.8 V supply and 25.3 dB under 2.4 V supply respectively. The input return loss is better than -10 dB from 50 GHz to 75 GHz. It delivers 8.4 dBm saturated output power at 67 GHz with a 2.4 V supply. TLP measurement result shows that the voltage is clamped below 6 V even under 10 A ESD current.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128353174","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 new shunt-stub-based meander artificial transmission line in miniaturized microwave passive components 小型化微波无源元件中一种新型分流存根曲流人工传输线
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164606
Yu Cao, Xiaohong Tang, Ling Wang, Tengfei Yan
{"title":"A new shunt-stub-based meander artificial transmission line in miniaturized microwave passive components","authors":"Yu Cao, Xiaohong Tang, Ling Wang, Tengfei Yan","doi":"10.1109/IEEE-IWS.2015.7164606","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164606","url":null,"abstract":"A miniaturized Wilkinson power divider and a branch-line coupler using a newly proposed shunt-stub-based meander artificial transmission line (ATL) are presented in this paper for ISM band applications. Open-circuited stubs are evenly placed in the blank area of the meander line to form the proposed ATL, which can be accurately designed by synthesizing microstrip lines with various characteristic impedances and electrical lengths. At the center frequency (2.4GHz) of ISM band, the sizes of the proposed Wilkinson power divider and branch-line coupler are only 30.2% and 23.7% of those conventional ones. The miniaturized Wilkinson power divider and branch-line coupler have similar frequency responses with the conventional counterparts, almost the same bandwidths especially. The measured results of the proposed microwave passive components are in a good agreement with the simulated results.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130069378","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 high-resolution tail-capacitor based tuning scheme for LC-DCO 基于尾电容的LC-DCO高分辨率调谐方案
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164625
Zisong Wang, Lin He, Lu Yang, F. Lin
{"title":"A high-resolution tail-capacitor based tuning scheme for LC-DCO","authors":"Zisong Wang, Lin He, Lu Yang, F. Lin","doi":"10.1109/IEEE-IWS.2015.7164625","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164625","url":null,"abstract":"This paper presents a high resolution tuning scheme for the LC digitally-controlled-oscillator (DCO) based on desensitized tail capacitance tuning. The sensitivity of the oscillation frequency to the tail capacitance is quantitatively analyzed. The impact of the tail capacitance on the phase noise is qualitatively discussed. Our analysis and simulation results show that both the phase noise and the resolution can be improved simultaneously if the tail capacitance value is properly designed. A 2.4 GHz DCO designed in 65-nm CMOS technology is simulated for demonstration. The tuning resolution can be improved by a factor of 20, and the phase noise at 1 MHz offset can be improved by 2 dB.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124004330","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
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