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2021 IEEE MTT-S International Wireless Symposium (IWS)最新文献

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An improved Model and Estimation Method for Delay/Doppler Altimetry 一种改进的延迟/多普勒测高模型及估计方法
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499600
Bo Huang, Fang Li, Zixian Yang
{"title":"An improved Model and Estimation Method for Delay/Doppler Altimetry","authors":"Bo Huang, Fang Li, Zixian Yang","doi":"10.1109/IWS52775.2021.9499600","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499600","url":null,"abstract":"Semi-analytical model for the echo of spaceborne delay/Doppler altimetry (DDA) has been proved efficient and meaningful. However, the complexity of motion errors could not be neglected in low-altitude and highly maneuver flight, such as unmanned aerial vehicles (UAV) remote sensing. At the beginning of this paper, an improved expression for the flat surface impulse response (FSIR) considering vertical motion errors is proposed. The formulation, being one term of the mean echo power, allows for an explicit understanding of how the various vertical position and slight movement affect the waveform. Then a convolution neural network (CNN) is utilized to classify the objects in quantities which are detected in the first step. Simulated results on a set of delay Doppler maps (DDMs) demonstrate that the proposed method is able to generate desirable description of the scene.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130810418","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 40-GHz Power Amplifier With Output Power of 15.2 dBm in 65-nm CMOS 一种输出功率为15.2 dBm的65纳米CMOS 40 ghz功率放大器
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499482
Junhao Jia, Xu Wang, J. Wen
{"title":"A 40-GHz Power Amplifier With Output Power of 15.2 dBm in 65-nm CMOS","authors":"Junhao Jia, Xu Wang, J. Wen","doi":"10.1109/IWS52775.2021.9499482","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499482","url":null,"abstract":"A millimeter wave (mm-Wave) power amplifier (PA) based on transformer matching network is presented in this paper. Two-stage common source (CS) differential structure PA is proposed which adopts cross-coupling capacitors to improve the stability and gain of the circuit, transformers are designed to simplify the design of impedance matching networks. Output matching is designed as a strongly coupled transformer to achieve low insertion loss, high output power and high efficiency, while the input and inter matching network is designed with low K (coupling coefficient) transformer to achieve better bandwidth. Designed and implemented in 65-nm CMOS technology with 1-V supply, the prototype delivers a saturated output power (Psat) of 15.2 dBm at 40 GHz, the maximum small-signal gain is 16.9 dB, and output IdB compression power (OPldB) is 12.41dBm with its corresponding power added efficiency (PAE) is 17.65%. The chip size is only 0.05 mm2 excluding all DC pads.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131046270","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
Design of a miniaturized 2–18 GHz downconverter 小型化2-18 GHz下变频器的设计
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499514
Hongbo Yin, Kun Chen, Decai Zhang, Dahai Ni, Jinyang Li
{"title":"Design of a miniaturized 2–18 GHz downconverter","authors":"Hongbo Yin, Kun Chen, Decai Zhang, Dahai Ni, Jinyang Li","doi":"10.1109/IWS52775.2021.9499514","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499514","url":null,"abstract":"Downconverter plays a unique role in radio frequency (RF) receiving systems, which converts the RF signal to the intermediate frequency (IF) signal. This paper proposes a design of a miniaturized 2–18 GHz downconverter with a 1 GHz processing bandwidth. The key electrical parameters of the designed downconverter are the noise figure (<8dB), the global dynamic range (>70dB), and the spurious signal level (<50dB). By using the integrated GaAs filter bank, the size of the RF circuit is increasingly miniaturized.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130873719","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 Digital Retro-reflective Beamforming System Based on FPGA for Wireless Power Transmission 基于FPGA的无线电力传输数字反向反射波束形成系统
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499362
Min Liu, Songpeng Zhang, Xin Wang, Mingyu Lu
{"title":"A Digital Retro-reflective Beamforming System Based on FPGA for Wireless Power Transmission","authors":"Min Liu, Songpeng Zhang, Xin Wang, Mingyu Lu","doi":"10.1109/IWS52775.2021.9499362","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499362","url":null,"abstract":"An experimental system of digital retro-reflective beamforming based on FPGA for wireless power transmission is presented. The wireless power transmission experiments involve the following three steps. First, pilot signal is broadcasted by a wireless power receiver as “request for wireless power.” Second, the pilot signals received by a wireless power transmitter are reversed in time. Third, the phase-conjugate signals are employed to construct a microwave power beam toward the location from which the pilot signal originates. To accomplish phase-conjugation, the pilot signals are down-converted to the baseband, then digitized and time-reversed by FPGA, and finally the time-reversed baseband signals are up-converted to the microwave frequency band. A least-absolute-value algorithm is implemented for time-reversal, which reduces the resource consumption of the FPGA. Experimental results demonstrate that the digital retro-reflective beamforming system is capable of constructing a wireless power beam toward the location of a mobile wireless power receiver in reaction to the pilot signal precisely.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131329608","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
A Folded Planar Luneburg Lens for Multi-Beams Antennas Application 一种用于多波束天线的折叠平面吕尼堡透镜
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499349
Anrong Chen, Tao Yang
{"title":"A Folded Planar Luneburg Lens for Multi-Beams Antennas Application","authors":"Anrong Chen, Tao Yang","doi":"10.1109/IWS52775.2021.9499349","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499349","url":null,"abstract":"This paper presents a two-dimensional compact Luneburg lens operating in X-band for beamforming network (BFN) application. The Luneburg lens is realized by drilling holes in a double-layers substrate, and to reduce the size of lens, it is folded into a half-cylinder. Compared with previous planar lens design, the proposed Luneburg lens's profile is reduced by half while maintaining good performance. The proposed BFN can provide a phase scanning range of about ±95° by switching the feeding port. The experiments show that the design can achieve a 10% bandwidth for $vert mathrm{S}_{11}vert$ < −10dB at 10 GHz. Measured and simulated results agree well.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131684402","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
Millimeter Wave Compact Power Divider Based on Micro-coaxial Lines 基于微同轴线路的毫米波紧凑型功率分配器
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499491
Ruihua Liang, A. Zhang, Cheng Guo, Guanghua Shi, Zixian Wu
{"title":"Millimeter Wave Compact Power Divider Based on Micro-coaxial Lines","authors":"Ruihua Liang, A. Zhang, Cheng Guo, Guanghua Shi, Zixian Wu","doi":"10.1109/IWS52775.2021.9499491","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499491","url":null,"abstract":"This paper presents a compact four-way power divider based on micro-coaxial lines. For ease of testing, two of the same power dividers are placed back-to-back, and CPW to micro-coaxial Line transitions are added to input/output ports. The whole structure is directly measured on wafer using a probe system. In W band, the measured return loss is greater than 15 dB and the insertion loss is smaller than 1.3 dB.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133738718","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
Design of Tri-band Dual-circularly Polarized BeiDou Navigation Antenna Based on Metamaterial 基于超材料的三波段双圆极化北斗导航天线设计
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499344
Jianxiu Fan, Xiu-zhen Luan, Yuxin Zheng
{"title":"Design of Tri-band Dual-circularly Polarized BeiDou Navigation Antenna Based on Metamaterial","authors":"Jianxiu Fan, Xiu-zhen Luan, Yuxin Zheng","doi":"10.1109/IWS52775.2021.9499344","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499344","url":null,"abstract":"A tri-band dual-circularly polarized BeiDou navigation antenna based on metamaterial structure is proposed and designed in this paper. The antenna is a square loop which consists of four double periodic bridged composite right / left handed (DP B-CRLH) metamaterial unit cells, and is fed by single feed point. The DP B-CRLH unit cell which has multi-band and right / left handed propagation characteristics was used to realize the tri-band dual-circularly polarized antenna. The measured results show that the antenna receives right-handed circularly polarized (RHCP) navigation signals in B2 band; radiates left-handed circularly polarized (LHCP) short message communication signals in L band; receives RHCP short message communication signals in S band, simultaneously, and the bandwidths of axial ratio less than 3 dB are about 10%, 7.4% and 2.8%, respectively. S11< −10dB in the three operating frequency bands, meeting the official performance standard requirements of BeiDou navigation antenna.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115519107","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 New Method for Measuring Calibration Factors of Microwave Power Transfer Standard 一种测量微波功率传输标准校准系数的新方法
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499531
Jianxin Ding, Susu Ma, Wenze Yuan, Jinwen Liu, Chao Jia, Xiaohai Cui
{"title":"A New Method for Measuring Calibration Factors of Microwave Power Transfer Standard","authors":"Jianxin Ding, Susu Ma, Wenze Yuan, Jinwen Liu, Chao Jia, Xiaohai Cui","doi":"10.1109/IWS52775.2021.9499531","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499531","url":null,"abstract":"Power is the fundamental parameter among the radio frequency metrology key parameters, which provides the traceability to many parameters. To ensure the preciseness of power measurement, accurate expression and analysis of calibration factor is indispensable. In conventional method, calibration factor of power sensor and adapter combination is based on efficiency equation. Measurement uncertainty is relatively large due to network analyzer's uncertainty. In this paper, we propose a novel approach calculating calibration factor of combination, based on transmission line's loss factor. Measurement uncertainty is expected to decrease from 3% to 2%, with novel approach applied. Calculation method is proved by calibration experiment of 7mm power transfer standard. Difference of calibration factor between calculation and experiment is reduced by 75%, indicating a dramatical decrease of measurement uncertainty.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"201 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115699754","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 Differentially-Fed Dielectric-loaded Antenna with Sidelobe Reduction Based on SISL Platform 基于SISL平台的差分馈电介质负载旁瓣抑制天线
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499622
Tianjie Yin, Yu Luo, Ningning Yan, Wenxing An, Kaixue Ma
{"title":"A Differentially-Fed Dielectric-loaded Antenna with Sidelobe Reduction Based on SISL Platform","authors":"Tianjie Yin, Yu Luo, Ningning Yan, Wenxing An, Kaixue Ma","doi":"10.1109/IWS52775.2021.9499622","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499622","url":null,"abstract":"A differentially-fed dielectric-loaded antenna with sidelobe suppression performance based on Substrate-Integrated Suspend Line (SISL) platform is proposed. The patch worked at TM03 is differentially fed and set on G5. A piece of high dielectric is loaded below the patch and then the current distribution of the patch is affected. The sidelobe of the antenna is reduced and Side-Lobe Level (SLL) of −5.4 dB is achieved.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124308069","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 77.2-dB SNDR SAR ADC With a Segmented Comparator Logic Based on Compensatory SA Latch for FIA 基于补偿SA锁存器的77.2 db SNDR SAR ADC
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499343
Xinjie Wu, Yuyan Liu, Haowei Lu, Kaitian Huang, Kai Huang, Xiaopeng Yu
{"title":"A 77.2-dB SNDR SAR ADC With a Segmented Comparator Logic Based on Compensatory SA Latch for FIA","authors":"Xinjie Wu, Yuyan Liu, Haowei Lu, Kaitian Huang, Kai Huang, Xiaopeng Yu","doi":"10.1109/IWS52775.2021.9499343","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499343","url":null,"abstract":"This paper presents a successive approximation register (SAR) analog-to-digital convertor (ADC) dedicated to Internet of Things (IoT) applications. A segmented comparator logic with separated amplification phase and latch phase is proposed which enables sufficient amplification to achieve high resolution. Cooperating with the logic, a compensatory strong-arm (SA) latch is proposed for the floating invertor pre-amplifier (FIA), which guarantees both high gain and output stability of FIA. Implemented in 110nm CMOS technology, at a 1.5-V supply and 1 MS/s, the ADC achieves an SNDR of 77.2 dB and consumes 348 µw, resulting in a figure of merit (FoM) of 168.8 dB.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114946157","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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