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

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A planar balanced branch-line coupler with filtering function 一种具有滤波功能的平面平衡支路耦合器
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-05-01 DOI: 10.1109/IEEE-IWS.2018.8400927
Zhou Chen, Kai Xu, Jin Shi
{"title":"A planar balanced branch-line coupler with filtering function","authors":"Zhou Chen, Kai Xu, Jin Shi","doi":"10.1109/IEEE-IWS.2018.8400927","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400927","url":null,"abstract":"A planar balanced branch-line coupler with filtering function is proposed, which is realized by four quarter-wavelength microstrip lines and eight quarter-wavelength coupled lines. The proposed design not only exhibits the functions of power dividing and filtering for differential-mode signal, but also can suppress the common-mode signal. Furthermore, the proposed planar design is easy to process when compared with the reported double-layer balanced filtering branch-line coupler. The measured results show the insertion loss of 2.1 dB at 1.7 GHz, the 3-dB bandwidth of 5.6%, the isolation better than 15 dB from 1.65 to 2.03 GHz, and the common-mode suppression higher than 20 dB from 1.64 to 2.01 GHz.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128501860","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
A compact passive resonator based on through-silicon via technology for microwave applications 微波应用中基于硅通孔技术的紧凑型无源谐振器
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-05-01 DOI: 10.1109/IEEE-IWS.2018.8400871
Xiangkun Yin, Zhangming Zhu, Yintang Yang, Qijun Lu, Xiaoxian Liu, Yang Liu
{"title":"A compact passive resonator based on through-silicon via technology for microwave applications","authors":"Xiangkun Yin, Zhangming Zhu, Yintang Yang, Qijun Lu, Xiaoxian Liu, Yang Liu","doi":"10.1109/IEEE-IWS.2018.8400871","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400871","url":null,"abstract":"Based on the TSV technology, a compact passive resonator utilizing spiral inductor and coaxial TSV capacitor is proposed. And the compact stack configuration integrates the whole resonator in a microsize as small as 75μm×75μm. Furthermore, the adopted spiral inductor, coaxial TSV capacitor and resonator are characterized with equivalent circuit model. The transmission parameters from equivalent circuit models and HFSS simulation are matched very well. The proposed resonator exhibits an insertion loss below 1.0dB and a return loss over −20 dB at the center frequency of 2.7GHz in the passband. And the −3dB bandwidth of resonant peak in the resonant frequency span are within the range from 1.4GHz to 5.2GHz, which demonstrates the superior characteristic of the resonator.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"69 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130147220","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
Analysis of coplanar-to-rectangular waveguide transition at D-band for UTC-PD THz source UTC-PD太赫兹源d波段共面-矩形波导跃迁分析
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-05-01 DOI: 10.1109/IEEE-IWS.2018.8400833
Caixia Wang, Yuan Yao, L. Qi, Zhijiao Chen, Junsheng Yu, Xiao-dong Chen
{"title":"Analysis of coplanar-to-rectangular waveguide transition at D-band for UTC-PD THz source","authors":"Caixia Wang, Yuan Yao, L. Qi, Zhijiao Chen, Junsheng Yu, Xiao-dong Chen","doi":"10.1109/IEEE-IWS.2018.8400833","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400833","url":null,"abstract":"This letter presents a broadband coplanar-to-rectangular waveguide transition using E-plane stepped probe for unitraveling carrier photodiode (UTC-PD) THz source application. The electromagnetic wave propagates from the CPW, and then radiates from the probe into the rectangular waveguide. A window is opened in parallel with the H-plane of the WR-6 waveguide. A stepped probe connecting to the end of the coplanar waveguide (CPW) is designed to improve the impedance bandwidth. In addition, the CPW is enclosed by an aluminum box in order to prevent the electromagnetic interference. Simulated results demonstrate that the proposed transition covers the whole D band (110–170 GHz), and has a wider fractional bandwidth of 43% and lower insertion loss of 1.3 dB.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121973837","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 K-band power amplifier in a 0.15-um GaAs pHEMT process 基于0.15 um GaAs pHEMT工艺的k波段功率放大器
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-05-01 DOI: 10.1109/IEEE-IWS.2018.8400956
Kuisong Wang, Yuepeng Yan, X. Liang
{"title":"A K-band power amplifier in a 0.15-um GaAs pHEMT process","authors":"Kuisong Wang, Yuepeng Yan, X. Liang","doi":"10.1109/IEEE-IWS.2018.8400956","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400956","url":null,"abstract":"A K-band monolithic microwave integrated circuit (MMIC) power amplifier (PA) is designed using a 0.15 um Emode GaAs pHEMT process. The MMIC PA is designed with power combining technology. Simulation results show that the MMIC PA exhibits saturation output power (Psat) of 31 dBm with power added efficiency (PAE) higher than 27.3%, and power gain higher than 21.3 dB from 24 GHz to 28 GHz, the input return loss is lower than −13dB, and the output return loss is lower than −12dB in the working band. Furthermore, the chip size is 3mm∗1.5mm including all the bonding pads.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122495221","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
Conjugate image impedance matching for maximizing the gains of a WPT link 用于最大化WPT链路增益的共轭图像阻抗匹配
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-05-01 DOI: 10.1109/IEEE-IWS.2018.8400873
Qinghua Wang, W. Che, G. Monti, M. Mongiardo, M. Dionigi, F. Mastri
{"title":"Conjugate image impedance matching for maximizing the gains of a WPT link","authors":"Qinghua Wang, W. Che, G. Monti, M. Mongiardo, M. Dionigi, F. Mastri","doi":"10.1109/IEEE-IWS.2018.8400873","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400873","url":null,"abstract":"This paper focuses on the use of appropriate matching networks for resonant inductive Wireless Power Transfer (WPT). The link is described by using the power gain definitions commonly adopted for active networks. It is theoretically and experimentally demonstrated that the use of adaptive networks realizing the conjugate image impedance matching condition allows maximizing the three gains for variable values of the coupling coefficient.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122592492","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: 6
A novel single-fed high-gain and phase-adjustable transmitting antenna element for wireless power transmission 一种用于无线电力传输的新型单馈高增益相位可调发射天线元件
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-05-01 DOI: 10.1109/IEEE-IWS.2018.8400853
M. Liang, Hongyin Zhang, Fushun Zhang, Fukun Sun
{"title":"A novel single-fed high-gain and phase-adjustable transmitting antenna element for wireless power transmission","authors":"M. Liang, Hongyin Zhang, Fushun Zhang, Fukun Sun","doi":"10.1109/IEEE-IWS.2018.8400853","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400853","url":null,"abstract":"A novel single-fed high-gain and phase-adjustable cavity slot antenna element is presented in this paper. The antenna consists of a slotted cavity cover, a driven dipole and a polarization twist reflector. And a 2×4 slots array is etched on the top surface of the cavity cover. To excite the cavity slots with uniform amplitude and phase, the polarization twist reflector is used here. Thus, the antenna can achieve the high-gain property. In addition, by rotating the polarization of the driven dipole, the antenna can provide a continuous and linear phase in the far-field region. With the phase-adjustable property, the element can be regarded as an integration of a high-gain antenna and a phase shifter, which is a favorable feature for a phased array. The proposed antenna element is fabricated and can achieve an impedance bandwidth of 2.1%. Within the bandwidth, the measured maximum gain and radiation efficiency are 13.6 dBi and 93%, respectively. Additionally, under the constrains of 1-dB gain drop and VSWR ≤ 2.0, a continuous and linear phase change from 0° to 40.2° at 5.8 GHz is obtained.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127165776","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
Chireix amplifier with enhanced bandwidth using active load 利用主动负载增强带宽的Chireix放大器
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-05-01 DOI: 10.1109/IEEE-IWS.2018.8400841
P. Roblin, Hsiu-Chen Chang
{"title":"Chireix amplifier with enhanced bandwidth using active load","authors":"P. Roblin, Hsiu-Chen Chang","doi":"10.1109/IEEE-IWS.2018.8400841","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400841","url":null,"abstract":"The use of an active load has been recently proposed for the realization of power-efficient broadband balanced amplifiers. The application of an active load to a dual-input Chireix amplifier is investigated in this paper for the purpose of increasing their bandwidth. An embedding device model is used to established the optimal non-Foster loads required for both the transistors to remain operating in class F as the operating frequency deviates from the center frequency. Given the transistors must operate with a constant voltage swing between backoff and peak, it is found necessary for the two transistors to operate with different load impedances as the frequency varies. The required load impedance and outphasing angles for the Chireix operation are obtained using a generalized eigenvalue problem using the Y-matrix of the Chireix combiner loaded with the active load. It is verified that using an active load, it is possible to maintain a high efficiency not only at peak power but also under various backoff power levels over a bandwidth of 1 GHz. Within a 200 MHz bandwidth, the PA is predicted to be able to maintain an efficiency larger than 79% for 6 dB backoff. Further work is required to experimentally validate the proposed technique.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127957423","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
Beamforming UWB-IR transmitter for NLOS indoor positioning and tracking application 用于NLOS室内定位和跟踪的波束形成UWB-IR发射机
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-05-01 DOI: 10.1109/IEEE-IWS.2018.8400888
M. Ansari, C. Law
{"title":"Beamforming UWB-IR transmitter for NLOS indoor positioning and tracking application","authors":"M. Ansari, C. Law","doi":"10.1109/IEEE-IWS.2018.8400888","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400888","url":null,"abstract":"This paper describes a UWB-IR beamforming transmitter array for non-line-of-sight directional indoor positioning and tracking of moving objects in the dense cluttered environment. The proposed electronically controlled UWB-IR beamforming circuit uses the combination of tunable digital true-time delay cell to generate the four equally time-spaced data pulses. The equally time-spaced data pulses fed to the UWB-IR pulse generator array of four elements, which generate four UWB-IR pulses with the same amount of relative delays. The presented beamforming architecture has been optimized to produce relative delay ranging from −600 psec to +600 psec and the antenna array has intentionally configured to produce multiple beams in different directions.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127381993","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: 6
Simulation and analysis of near-field distribution of unmanned checkout channel 无人结账通道近场分布仿真与分析
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-05-01 DOI: 10.1109/IEEE-IWS.2018.8400920
Ting Kang, Xunwang Zhao, Yu Zhang
{"title":"Simulation and analysis of near-field distribution of unmanned checkout channel","authors":"Ting Kang, Xunwang Zhao, Yu Zhang","doi":"10.1109/IEEE-IWS.2018.8400920","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400920","url":null,"abstract":"The analysis of near-field distribution of unmanned checkout channel (UCC) plays a guiding role on the design of the channel and the antenna inside it. However, limited by computer resources, it is difficult for traditional algorithms to achieve accurate simulation of such large-scale targets. With the development of the multi-core technology and the cluster technology, the parallel higher-order method of moments (HO-MoM) can be utilized to solve this problem. In this paper, the correctness of the algorithm is verified by comparing the far-field patterns of an antenna array with that computed by the finite-element method (FEM), and then the near-field distribution of the whole UCC is simulated, and the result is in good agreement with the actual measurement. It demonstrates the efficiency and accuracy of HO-MoM, and shows its capability in solving practical engineering problems.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122242947","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 VCO-dedicated digital LDO with multi-comparator coarse loop and 1-bit ΔΣ fine loop for robust frequency generation vco专用数字LDO，具有多比较器粗回路和1位ΔΣ细回路，用于鲁棒频率生成
2018 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2018-05-01 DOI: 10.1109/IEEE-IWS.2018.8400966
Zhendong Ding, W. Rhee, Zhihua Wang
{"title":"A VCO-dedicated digital LDO with multi-comparator coarse loop and 1-bit ΔΣ fine loop for robust frequency generation","authors":"Zhendong Ding, W. Rhee, Zhihua Wang","doi":"10.1109/IEEE-IWS.2018.8400966","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2018.8400966","url":null,"abstract":"This paper describes a fully integrated two-stage digital low-dropout regulator (DLDO) architecture for robust frequency generation under low supply voltage. The DLDO designed for a voltage-controlled oscillator (VCO) in the phase-locked loop (PLL) provides constant or temperature-compensated supply voltage with a 1-bit Δ∑ modulated fine loop, while offering fast transient performance over load current jump with the multi-comparator coarse loop. The proposed DLDO designed in 65nm CMOS generates a noise-shaped output whose peak value is less than 1mV with a 200pF on-chip capacitor. The low dropout voltage of 50mV from a 1.0V supply is achieved with the load current ranging from 2.0μA to 13.0mA.","PeriodicalId":163165,"journal":{"name":"2018 IEEE MTT-S International Wireless Symposium (IWS)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130798433","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
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