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A Review of Memory Effects in AlGaN/GaN HEMT Based RF PAs 基于AlGaN/GaN HEMT的射频PAs记忆效应研究进展
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499373
J. Pedro, P. Tomé, T. Cunha, Filipe M. Barradas, L. Nunes, P. Cabral, João L. Gomes
{"title":"A Review of Memory Effects in AlGaN/GaN HEMT Based RF PAs","authors":"J. Pedro, P. Tomé, T. Cunha, Filipe M. Barradas, L. Nunes, P. Cabral, João L. Gomes","doi":"10.1109/IWS52775.2021.9499373","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499373","url":null,"abstract":"This work is an overview of the current understanding of memory effects arising from AlGaN/GaN HEMT based RF power amplifiers. It reviews the most widely accepted physical sources of those memory effects and their impact on the amplifier's linearizability, to then discuss corresponding circuit design approaches to minimize the phenomena. This is illustrated by results of a power amplifier whose short-term and long-term nonlinear memory is compensated by an analog assisted digital pre-distortion scheme.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"37 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":"114560497","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: 9
Multi-Section Support Vector Regression-Based Behavioral Modeling of RF GaN Doherty Power Amplifiers 基于多段支持向量回归的射频GaN多尔蒂功率放大器行为建模
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499388
Lin Qi, H. Yin, Peng Chen, Jialin Cai, Xiaowei Zhu, Chao Yu, Wei Hong
{"title":"Multi-Section Support Vector Regression-Based Behavioral Modeling of RF GaN Doherty Power Amplifiers","authors":"Lin Qi, H. Yin, Peng Chen, Jialin Cai, Xiaowei Zhu, Chao Yu, Wei Hong","doi":"10.1109/IWS52775.2021.9499388","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499388","url":null,"abstract":"A novel behavioral model based on multi-section support vector regression (MS-SVR) of radio frequency (RF) Gallium Nitride (GaN) Doherty power amplifiers (PAs) is proposed in this paper. In this method, the input signal is divided into different sections according to signal amplitude and each section is modeled separately using SVR. Experimental validation is performed using a 2.4 GHz Doherty PA. The results show that the proposed model can effectively reduce the time of parameter extraction and signal processing.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"59 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":"123906713","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
High-Efficiency Simultaneous Wireless Information and Power Transmission (SWIPT) By Exploiting 2nd/3rd Harmonics 利用二/三次谐波的高效同时无线信息与电力传输(SWIPT)
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499539
Hao Zhang, Yi Li, Siping Gao, Yong-xin Guo
{"title":"High-Efficiency Simultaneous Wireless Information and Power Transmission (SWIPT) By Exploiting 2nd/3rd Harmonics","authors":"Hao Zhang, Yi Li, Siping Gao, Yong-xin Guo","doi":"10.1109/IWS52775.2021.9499539","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499539","url":null,"abstract":"Far-field wireless power transmission always suffers from antenna radiation/polarization misalignment, and unknown distances between a base station and rectenna ends. To solve such problem, 2nd/3rd harmonics generated from RF-to-de rectification are exploited. Consequently, an interesting relationship between harmonic and radiation/polarization, distance can be established. To further realize high isolation between incidence and harmonic backscattered signals, novel diplexers are adopted. Together with a shared-aperture dual band antenna, a compact rectenna can be facilitated for high-efficiency simultaneous wireless information and power transmission (SWIPT) by exploiting 2nd/3rd harmonics.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"104 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":"124047781","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
An Adaptive Kalman Filter based Digital Phase Detector for All Digital Phase-Locked Loop 基于自适应卡尔曼滤波的全数字锁相环数字鉴相器
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499674
Ke-liang Wu, Chenyue Shi, Yuchen Li, Changzhan Gu, Jinjing
{"title":"An Adaptive Kalman Filter based Digital Phase Detector for All Digital Phase-Locked Loop","authors":"Ke-liang Wu, Chenyue Shi, Yuchen Li, Changzhan Gu, Jinjing","doi":"10.1109/IWS52775.2021.9499674","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499674","url":null,"abstract":"This work proposes an adaptive Kalman filter (AKF) based digital phase detector that compresses the phase detector's (PD) output noise in all-digital phase locked loop (ADPLL). The ADPLL is modeled mathematically and the noise sources are extracted. An AKF is designed based on the ADPLL model and is inserted after the PD to optimize its output noise. This AKF takes the advantage of the statistical properties of the noise and adapt its parameter to make itself an optimal filter. Simulation is done in MATLAB and the result reveals the correctness and stability of the design. The PD gets a 16.9 dB noise power decrease in the simulation.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"11 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":"122374098","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
Dual-band Dual-polarized Scalable Phased Array Antenna with High Isolation and Polarization Purity for 5G Millimeter Wave Applications 面向5G毫米波应用的高隔离、高极化纯度双频双极化可扩展相控阵天线
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499512
Guolin Zhu, Hai-yang Xia, Bin Chen, Huan Liu, Lianming Li
{"title":"Dual-band Dual-polarized Scalable Phased Array Antenna with High Isolation and Polarization Purity for 5G Millimeter Wave Applications","authors":"Guolin Zhu, Hai-yang Xia, Bin Chen, Huan Liu, Lianming Li","doi":"10.1109/IWS52775.2021.9499512","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499512","url":null,"abstract":"A dual-band dual-polarized stacked patch antenna in package (AiP) operating at 28 and 39 GHz is proposed for 5G millimeter wave scalable phased array applications. With the isolation structure and differential feeding, the isolation between two polarization ports of the antenna element is greater than 50 dB, which is 10 dB higher than that without the isolation structure. Moreover, the cross-polarization isolation is greater than 30 dB. The 10-dB impedance bandwidth of the lower band starts from 27 to 28.4 GHz and the higher band covers the 38 to 39.5 GHz. The antenna has the advantages of simple structure, compact size and stable gain, making it suitable for the phased array antenna. Based on proposed antenna element, a 16-element phased array antenna, consisting of four scalable 2×2 subarrays, is designed. With simulations, it is proved that the antenna shows good beamforming performance in both frequency bands.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"67 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":"130683085","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
Power amplifier design considerations using a simplified model for the transistor 功率放大器的设计注意事项采用简化的晶体管模型
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499705
R. Quaglia
{"title":"Power amplifier design considerations using a simplified model for the transistor","authors":"R. Quaglia","doi":"10.1109/IWS52775.2021.9499705","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499705","url":null,"abstract":"This paper discusses the use of a simplified static model for representing high-frequency transistors in the initial stage of power amplifier design. Focusing on gallium nitride high electron mobility transistors, the application of the model to two different scenarios is shown. Firstly, the model is proven to be effective in initiating the design of a broadband PA for Ku-band, and results are compared to the use of a full non-linear model showing a good agreement. Secondly, the model is used to analyze the sensitivity to load mismatch of different PA architectures, including balanced, Doherty, and load-modulated balanced amplifiers and offering some interesting insight into this very relevant problem in modern wireless transmitters.","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":"128719506","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
Acoustic Reflectors for Anchor Loss Reduction of Thin Film Piezoelectric on Substrate Resonators 基板上薄膜压电谐振器中用于降低锚损的声反射器
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499583
Jiacheng Liu, Temesgen Bailie Workie, Zhaohui Wu, Panliang Tang, J. Bao, K. Hashimoto
{"title":"Acoustic Reflectors for Anchor Loss Reduction of Thin Film Piezoelectric on Substrate Resonators","authors":"Jiacheng Liu, Temesgen Bailie Workie, Zhaohui Wu, Panliang Tang, J. Bao, K. Hashimoto","doi":"10.1109/IWS52775.2021.9499583","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499583","url":null,"abstract":"This paper describes a fish scale reflector (FSR) structure in the anchoring boundaries to improve the quality factor of thin-film piezoelectric-on-substrate (TPoS) resonators. A 2D fishscale reflector is designed and employed on the anchoring boundaries aiming to suppress the acoustic energy leakage through the tether to the supporting substrate. Finite element method (FEM) simulated results revealed that compared to the conventional resonators, the resonators with single reflector and fish scale reflector has improved the quality factor. In this regard, the Q of the fish scale reflector (FSR) resonator achieved a 3.2-fold improvement (i.e. $Q_{anc}=16366$) compared with the conventional(C) design (i.e. $Q_{anc}=5083$) and an almost 2.3-fold improvement compared with the single reflector (SR) structure (i.e. $Q_{anc} = 7044$).","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":"124914074","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 Low Amplitude/Phase Error 16dB CMOS Variable Gain Amplifier with 180° Phase Shifting 具有180°相移的低幅度/相位误差16dB CMOS可变增益放大器
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499637
Chen-Chen Yang, Tong Li, Yong Chen, Yue Lin, N. Yan, Hongtao Xu
{"title":"A Low Amplitude/Phase Error 16dB CMOS Variable Gain Amplifier with 180° Phase Shifting","authors":"Chen-Chen Yang, Tong Li, Yong Chen, Yue Lin, N. Yan, Hongtao Xu","doi":"10.1109/IWS52775.2021.9499637","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499637","url":null,"abstract":"This paper demonstrates A CMOS independent cascode current cancelling (ICCC) variable gain amplifier (VGA) which achieves 16dB gain variation and 180° phase shift. Under different gain states, only a 1.6° phase error and a 0.2dB gain error can be found from 15 GHz to 25 GHz in 40-nm CMOS without any calibration by eliminating the effect of parasitic capacitors in off-state. Owing to the cascode structure, the peak gain of the VGA is 12dB with only one stage including input/output pads. Besides, the VGA can also serve as a 180° phase shift (PS) with no more than 1.5° phase error and 0.2dB gain error. In addition, the S11 and S22 keep almost unchanged with gain/phase variations. The measured −3-dB bandwidth is 5 GHz and OP1dB is 0.3dBm in the maximum gain state. The VGA consumes 16mWpower from 1.1V voltage. The area is 0.065mm2 excluding input/output pads.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"17 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":"127153076","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 Novel Multibeam Slot Array Antenna Based on Parabolic Lens BFN for Mass Production 一种面向量产的新型抛物透镜BFN多波束缝隙阵列天线
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499613
Junlin Liu, Bing Zhang
{"title":"A Novel Multibeam Slot Array Antenna Based on Parabolic Lens BFN for Mass Production","authors":"Junlin Liu, Bing Zhang","doi":"10.1109/IWS52775.2021.9499613","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499613","url":null,"abstract":"In this letter, a simple SIW multibeam antenna on the ground of parabolical lens beam-Forming network is put forward for mobile satellite communications. The presented antenna is consisted of a port part (Rogers RT/duroid 5880) as well as an antenna part (Rogers RT/duroid 6002). By manufacturing the antenna part via substrates of different dielectric constant, whereas maintained the port deck, flexible beam tunability is implemented in this multibeam antenna. The gain of the antenna up to 14.5 dBi within 27 GHz~ 28 GHz after experimental verification. Wide scan angle of beams varying from −59° to 62° is also observed. This antenna characterized better property and simpler architecture while compared with others. The operation principle, design process, and performance of the proposed antenna are expounded sequentially.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"21 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":"125787314","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 Broad-band Dual Circularly Polarized Microstrip Antenna with Low Profile 一种低轮廓宽带双圆极化微带天线
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499348
Yuduo Wang, Qiulin Huang, Z. Yu, Xiao-wei Shi
{"title":"A Broad-band Dual Circularly Polarized Microstrip Antenna with Low Profile","authors":"Yuduo Wang, Qiulin Huang, Z. Yu, Xiao-wei Shi","doi":"10.1109/IWS52775.2021.9499348","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499348","url":null,"abstract":"A broadband dual circularly polarized microstrip antenna with low profile is presented. The profile of the antenna is reduced by directly etching the patch antenna on the substrate block, and the circular polarization direction can be changed in a wide frequency band by feeding the antenna with 3dB bridge network. The proposed antenna has 51.0% impedance bandwidth (VSWR < 2) and 33.4% circularly polarized axial ratio bandwidth (AR < 3 dB). The final profile of the antenna is only 0.17 λ, and has good circular polarization radiation characteristics.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"103 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":"126353911","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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