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

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A High-Temperature-Resistant Frequency Selective Rasorber with Low-Frequency Diffusion and High-Frequency Transmission 一种具有低频扩散和高频传输的耐高温频率选择反射器
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499460
Chen Liang, Shuwai Leung, Yanan Wang, Mingxing Zhou, Fei-fei Li, Y. Poo
{"title":"A High-Temperature-Resistant Frequency Selective Rasorber with Low-Frequency Diffusion and High-Frequency Transmission","authors":"Chen Liang, Shuwai Leung, Yanan Wang, Mingxing Zhou, Fei-fei Li, Y. Poo","doi":"10.1109/IWS52775.2021.9499460","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499460","url":null,"abstract":"A frequency selective rasober (FSR) with high-temperature-resistance, wideband radar cross section reduction (RCSR), and flat-broad transmission band is presented in this paper. It consists of three functional layers: a piece of insulation tile, scattering cancellation metasurface based on interdigitated element, and a triple-layer-coupled-resonator spatial filter frequency selective surface. At low-frequency band, the incident energy is diffused to various directions, resulting in 10 dB RCSR over 2.52-11.68 GHz with a 129% fractional bandwidth. Besides, there is a highly efficient transmission band (insertion loss < 0.595 dB) over 16.53-19.83 GHz. It is also worth mentioning that our FSR can maintain such good properties at 500°C for 5 seconds with the help of insulation tile.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"8 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":"114403237","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 High-Efficiency Ku/Ka Dual-Band Power Amplifier 一种高效Ku/Ka双频功率放大器的设计
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499425
Y. Shao, H. Tao, Jiawen Wang
{"title":"Design of a High-Efficiency Ku/Ka Dual-Band Power Amplifier","authors":"Y. Shao, H. Tao, Jiawen Wang","doi":"10.1109/IWS52775.2021.9499425","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499425","url":null,"abstract":"A novel design of a Ku/Ka dual-band power amplifier is presented. A duplexer structure based on high-pass and low-pass filters is selected as the input stage for frequency selection of the input signal. The output stage of the power amplifier adopts a dual-frequency matching network, and the independent matching of the two frequency bands is realized through a section of impedance transformation line. Measurement results show that the amplifier can achieve an output power of over 41dBm and a PAE of over 32% in the 12-18GHz range when operating in Ku-band mode, and over 33dBm and a PAE of over 27% in the 31-36GHz range when operating in Ka-band mode.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"31 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":"114392912","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
Sample Selection Method for Digital Predistortion with Incremental Dimension of Coefficients 系数维数递增的数字预失真样本选择方法
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499710
Guichen Yang, Falin Liu, Hongmin Li, W. Qiao, Chengye Jiang, Lei Su
{"title":"Sample Selection Method for Digital Predistortion with Incremental Dimension of Coefficients","authors":"Guichen Yang, Falin Liu, Hongmin Li, W. Qiao, Chengye Jiang, Lei Su","doi":"10.1109/IWS52775.2021.9499710","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499710","url":null,"abstract":"In this paper, we present a new method for the linearization of radio frequency (RF) power amplifies (PAs) based on the sample selection method (SSM) with incremental dimension of coefficients. In SSM, insufficient training samples can cause some problems such as the low convergence speed and serious noise interference. In order to solve these problems, we propose to use coefficient vectors with increasing dimension in iterations and then to introduce the dimension reduction (or pruning) technique to ensure the priority selections of important coefficients in training. Experimental results show that the proposed method can achieve better normalized mean square error (NMSE) and adjacent channel power ratio (ACPR) with faster convergence speed compared with SSM.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"3 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":"122687892","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 Wide-Beam 3D-Fractal Hilbert GNSS Antenna 宽波束三维分形希尔伯特GNSS天线
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499683
Tianyang Jia, Jinlin Yang, Yan Zhang, Wenhao Jiang, Yawen Zheng
{"title":"A Wide-Beam 3D-Fractal Hilbert GNSS Antenna","authors":"Tianyang Jia, Jinlin Yang, Yan Zhang, Wenhao Jiang, Yawen Zheng","doi":"10.1109/IWS52775.2021.9499683","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499683","url":null,"abstract":"This paper presents a wide-beam 3D-fractal Hilbert GNSS antenna in the RDSS-S band. The proposed antenna consists of a novel radiator with four two-order 3D-fractal Hilbert curve radiating arms, and the corresponding feeding circuit. The beamwidth, with the gain greater than 0dB of the antenna, is 148° (Phi=0°) and 138° (Phi=90°). The size of the antenna is 30mm×30mm×12mm. In addition, the model of the 3D-fractal Hilbert curve and a prototype of the two-order RDSS-S antenna were manufactured by 3D printing. Simulated and measured results show that the proposed wide-beam 3D-Fractal Hilbert antenna is very suitable for GNSS.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"99 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":"122544692","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
Aperture Phase GA Optimization for Reflectarray Antennas with Feed Lateral Displacement 具有馈源侧向位移的反射天线孔径相位遗传算法优化
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499602
Mengjiao Li, Yu Xiao, Bin Xi, Houjun Sun
{"title":"Aperture Phase GA Optimization for Reflectarray Antennas with Feed Lateral Displacement","authors":"Mengjiao Li, Yu Xiao, Bin Xi, Houjun Sun","doi":"10.1109/IWS52775.2021.9499602","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499602","url":null,"abstract":"In this paper, an aperture phase optimization method using genetic algorithm (GA) for a reflectarray (RA) with a horizontal moving feed is presented. To improve the beam-scanning performance of the RA, the gain and BWFN (beam width between first nulls) of uv planar are introduced as key indicators in the phase optimization to reduce the gain variation. A full-wave simulation has been carried out to verify the method, and the results show that the gain variation of the optimized RA is smaller than 2 dB within ±30° scan coverage, while it is 4.6 dB for the traditional narabolic design.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"482 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":"122746906","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 Hybrid Microstrip/Fabry-Perot Resonator Cavity Antenna with Large Frequency Ratio 大频率比混合微带/法布里-珀罗谐振腔天线
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499679
Chunling Chen
{"title":"A Hybrid Microstrip/Fabry-Perot Resonator Cavity Antenna with Large Frequency Ratio","authors":"Chunling Chen","doi":"10.1109/IWS52775.2021.9499679","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499679","url":null,"abstract":"In this paper, a hybrid antenna with large frequency ratio is proposed. The frequency ratio of the two operating bands reaches 7.3. A meshed mirostrip patch antenna contributes to the radiation at microwave band. However, the radiation at millimeter wave comes from a Fabry-Perot resonator cavity antenna. These two antennas share one single aperture, which realizes structure reuse. The simulated results show that the impedance bandwidth ($vert mathrm{S}_{11}vert < -10$ dB) reaches 5% and 6.5% at lower band and higher band, respectively. The peak gains are 8.0 dBi and 12.82 dBi at 3.7 GHz and 27.1 GHz, respectively. The total size of the proposed antenna is only 40mm× 40mm× 5. 3mm. The proposed antenna shows potential applications on the base station of a 5G communication system.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"36 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":"121127937","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
Small-Signal Behavioral Model for GaN HEMTs based on Long-Short Term Memory Networks 基于长短期记忆网络的GaN hemt小信号行为模型
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499540
Mingqiang Geng, Zegen Zhu, Jialin Cai
{"title":"Small-Signal Behavioral Model for GaN HEMTs based on Long-Short Term Memory Networks","authors":"Mingqiang Geng, Zegen Zhu, Jialin Cai","doi":"10.1109/IWS52775.2021.9499540","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499540","url":null,"abstract":"In this paper, a modified recurrent neural network (RNN) technique, long-short term memory (LSTM) algorithm based, small-signal behavioral modeling methodology for Gallium nitride (GaN) high electron mobility transistors (HEMTs) is presented. The verification is carried out on an 8×125 µm GaN HEMT with a 0.25 µm gate feature size. The LSTM model shows excellent modeling performance. The relative error of S-parame-ters can be controlled under 1%. Compared with exiting support vector regression (SVR) modeling technique, the model extraction time is reduced significantly, while its accuracy is maintained at high level.","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":"130002117","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
Advanced Deep Neural Network Technique for Microwave Parametric Modeling 微波参数化建模的先进深度神经网络技术
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499429
Gong Cheng, Mingyu Wang, Wei Zhang, Xianping Liu
{"title":"Advanced Deep Neural Network Technique for Microwave Parametric Modeling","authors":"Gong Cheng, Mingyu Wang, Wei Zhang, Xianping Liu","doi":"10.1109/IWS52775.2021.9499429","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499429","url":null,"abstract":"Nowadays, the advent of deep learning techniques has enabled neural networks to adapt to more challenging models. However, it takes excessively long time to develope deep neural networks (DNNs) used for microwave component parametric modeling, which reduces its practicality. This paper proposes a new technique to speed up the process of developing such DNNs. Batch normalization (BN) technique is proposed to improve the convergence of the sigmoid networks and effectively alleviate the gradient vanishing problem. We use the BN layers alternately with the sigmoid layers instead of the pure sigmoid network. Furthermore, we propose to adopt the leaky ReLU (L·ReLU) to solve the neuron death problem, which can reduce the computation and training time by 52.0% and 69.7% respectively. We show an example of wide-range microwave parametric modeling to demonstrate the effectiveness of the proposed technique.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"20 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":"122350052","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
A2–18 GHz 13.5-W Distributed GaN HPA MMIC Based on Stacked and Tapering Techniques 基于堆叠和渐缩技术的A2-18 GHz 13.5 w分布式GaN HPA MMIC
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499505
Xu Yan, Jingyuan Zhang, Yongxin Guo
{"title":"A2–18 GHz 13.5-W Distributed GaN HPA MMIC Based on Stacked and Tapering Techniques","authors":"Xu Yan, Jingyuan Zhang, Yongxin Guo","doi":"10.1109/IWS52775.2021.9499505","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499505","url":null,"abstract":"In this paper, the design and analysis of a 2.0 to 18.0 GHz distributed high-power amplifier (DHPA) monolithic microwave integrated circuit (MMIC) on 150-nm GaN-SiC HEMT process has been presented. By employing 8-cell 2-level-stacked architecture, ultra-wide bandwidth and good power performance are achieved simultaneously. To improve the PAE and gain further, non-uniform distribution, tapering drain-artificial transmission line (D-ATMLs), and inductive gain peaking structures are also incorporated. The proposed HPA MMIC is a fully integrated one with all the necessary components on-chip. Simulated with continuous-wave (CW) excitations, the resulting performance under 35-V VDD power supply shows 18.5 ~ 16.0 dB small-signal gain, 13.5-7.5 W output power, and 38.2-19.5 % power-added efficiency (PAE) over more than 16 GHz frequency band. The die size of the proposed HPA core is around 4.8 × 1.8 mm which is very compact to be implanted into future broadband systems and applications.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"70 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":"122410399","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
mm-Wave Broadband Amplifier Design Methodology in Silicon-Based Technology 硅基技术中的毫米波宽带放大器设计方法
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499677
Hao Gao
{"title":"mm-Wave Broadband Amplifier Design Methodology in Silicon-Based Technology","authors":"Hao Gao","doi":"10.1109/IWS52775.2021.9499677","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499677","url":null,"abstract":"In the mm-wave frequency bands, there are more frequency specturm resources compared to the sub-6 frequency band. From 10 GHz to 40 GHz, it covers K/Ka-band wireless communication applications, such as car radar application and mm-wave 5G application. Those applications also easily occupy GHz bandwidth for high data rate communication. In this work, the design methodology of a broadband application in the mmwave frequency is presented, and an mm-wave low noise amplifier is provided as a design case in a SiGe technology with more than 90% fractional bandwidth.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"52 2 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":"122562857","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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