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2020 IEEE MTT-S International Wireless Symposium (IWS)最新文献

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Optimized Design of a Miniaturized Irregular Spherical Resonator with Enhanced Subtractive/Additive Manufacturing Process Compatibility 增强减/增材制造工艺兼容性的小型化不规则球形谐振器优化设计
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360168
Jin Li, Zhe Chen, Tao Yuan
{"title":"Optimized Design of a Miniaturized Irregular Spherical Resonator with Enhanced Subtractive/Additive Manufacturing Process Compatibility","authors":"Jin Li, Zhe Chen, Tao Yuan","doi":"10.1109/IWS49314.2020.9360168","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360168","url":null,"abstract":"RF design and structural optimization of an air-filled spherical-cavity-based miniaturized irregular resonator is presented. The irregular spherical cavity resonator is squeezed non-uniformly in horizontal orientations, and is miniaturized by capacitive loading using a geometrically shaped mushroom-head rod. The design differs from the conventional in the shaping of the cavity geometry, simultaneously taking into account 1) size compactness and miniaturization, 2) enhanced power handling capability, 3) maximized spurious-free region at lowest cost, and 4) most significantly, improved process compatibility with subtractive and additive manufacturing technologies. A prototype of the shaped irregular resonator with a fundamental-mode frequency of 3 GHz is fabricated in size of 0.3 lambda_{mathrm{g}} times 0.2 lambda_{mathrm{g}} times 0.33 lambda_{mathrm{g}}$, demonstrating an unloaded quality factor of 2610 and a spuri-ous-free region of >4 octaves. The resonator is a good candidate for new generations of miniaturized coaxial cavity filters with flexible manufacturing schemes.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121403858","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 Profile Dual-Band Antenna on an EBG Substrate EBG基板上的低轮廓双频天线
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360023
Shijie Huang, Liang Zhang, Chao Wang, Changqing Liu, Yi-Lin Jiang, Xianliang Wu
{"title":"Low Profile Dual-Band Antenna on an EBG Substrate","authors":"Shijie Huang, Liang Zhang, Chao Wang, Changqing Liu, Yi-Lin Jiang, Xianliang Wu","doi":"10.1109/IWS49314.2020.9360023","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360023","url":null,"abstract":"This paper proposes a dual-band antenna based on the electromagnetic band gap structure suitable for WLAN communication systems. The proposed antenna is designed to work at 2.45/5.8 GHz WLAN band. By loading the EBG structure directly below a dual-frequency monopole antenna, the in-phase superposition of electromagnetic waves at the center frequency of the antenna is achieved. The antenna exhibits high gains of near 8.0 and 12.0 dB at the low and high working frequencies while maintaining the low profile characteristics.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121660321","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 Undersampling Architecture for Wideband Digital Predistortion 一种新的宽带数字预失真欠采样结构
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360022
Qiang Zhang, Jie Niu, Lei Zhang, Zhiqiang Yu, Chao Yu, Jianfeng Zhai
{"title":"A Novel Undersampling Architecture for Wideband Digital Predistortion","authors":"Qiang Zhang, Jie Niu, Lei Zhang, Zhiqiang Yu, Chao Yu, Jianfeng Zhai","doi":"10.1109/IWS49314.2020.9360022","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360022","url":null,"abstract":"A novel undersampling architecture is employed to linearize the wideband power amplifiers (PAs) in this paper. The approach samples only I component of the feedback signal with a low sampling rate by means of the random demodulation-based reduced sampling rate (RDRS) method. It has lower complexity compared with some existing digital predistortion (DPD) systems, since a lower speed ADC in the feedback path is required. The least-square algorithm is adopted to extract the DPD coefficients. Experimental results show that the architecture achieves nearly the same linearization performance as the conventional methods and it is highly suitable for the broadband DPD.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127561361","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
Energy reconfigurable meta-resonant-cavity to generate asymmetry vortex beam in microwave 能量可重构元谐振腔在微波中产生不对称涡旋束
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9359921
Kuang Zhang, Jiayu Ma, Yueyi Yuan, Yuxiang Wang, Xumin Ding, Qun Wu
{"title":"Energy reconfigurable meta-resonant-cavity to generate asymmetry vortex beam in microwave","authors":"Kuang Zhang, Jiayu Ma, Yueyi Yuan, Yuxiang Wang, Xumin Ding, Qun Wu","doi":"10.1109/IWS49314.2020.9359921","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9359921","url":null,"abstract":"In this paper, a method for reconfiguring the energy distribution of vortex beam carrying orbital angular momentum (OAM) mode is proposed and verified in microwave region, which is achieved through ultra-thin meta-lens with resonant cavity structure. The spatial phase distribution of OAM mode is imposed by P-B phase principle, and the vortex wave front is performed in the cross-polarized transmission field wave. The reconfigurable energy intensity of vortex beam is achieved by two unit cells with distinguishable amplitude levels. The independent manipulation of amplitude and phase of vortex beam carrying OAM mode could be achieved by mean of changing the phase differences of co-polarization between two linear polarization waves. The mappings of electric field and phase distribution are in good agreement with theoretic design processes. This proposed meta-surface could be applied in the specially required energy tunable ultra-thin lens, nano-projectors, reconfigurable beam sheering devices, energy selective devices or ultrathin microwave components for imaging and sensing technologies in the wireless medium-short-wave distance communication.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121979430","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 Tunable Negative Group Delay Filter using Memristors 使用忆阻器的可调谐负群延迟滤波器
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360093
Guokai Zhao, Bin You
{"title":"A Tunable Negative Group Delay Filter using Memristors","authors":"Guokai Zhao, Bin You","doi":"10.1109/IWS49314.2020.9360093","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360093","url":null,"abstract":"This paper presents a novel tunable transmission-line negative group delay (NGD) filter using memristors. The proposed filter is based on short-circuited coupled lines. The memristors with a wide tuning range are loaded in the coupling ports of corresponding coupled lines. The NGD characteristics of the proposed filter could be tuned by memristors, which could be controlled by a high-frequency voltage. The results show that the NGD variation is from −2.214 ns to −9.029 ns at the center frequency of 1.920 GHz. To enhance the NGD bandwidth, two NGD circuits (NGDCs) operating at slightly different center frequencies are connected in parallel.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134216437","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
Non-ideal Continuous Class-E PA Modes for Maximum Efficiency and Maximum Linearity 非理想的连续e类PA模式的最大效率和最大线性
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9359976
J. V. de Almeida, K. Wu
{"title":"Non-ideal Continuous Class-E PA Modes for Maximum Efficiency and Maximum Linearity","authors":"J. V. de Almeida, K. Wu","doi":"10.1109/IWS49314.2020.9359976","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9359976","url":null,"abstract":"This paper presents the analysis of a class-E PA using an equivalent circuit model based on a look-up table generated by numerical simulation. The proposed methodology allows the direct determination of the drain voltage and current waveforms considering the transistor's triode region, finite switching time, and short-channel and thermal effects on saturation current. The revealed non-ideal space of high-efficient solutions is used to determine the class-E modes for maximum efficiency and maximum linearity. To support the theoretical results, a particular topology is implemented using a 25W-GaN transistor. The experimental results of the manufactured class-E are presented. Over a bandwidth of 2.37-2.41 GHz, the demonstrator has presented efficiency better than 75% with constant 42 dBm of continuous wave power.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134414871","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
Synthesis of Acoustic-Wave Duplexer Without Lumped Elements Shunted to Output Ports 无集总元件分流至输出端口的声波双工器合成
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9359930
Shi-Qiang Zhang, Linsheng Wu, J. Mao
{"title":"Synthesis of Acoustic-Wave Duplexer Without Lumped Elements Shunted to Output Ports","authors":"Shi-Qiang Zhang, Linsheng Wu, J. Mao","doi":"10.1109/IWS49314.2020.9359930","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9359930","url":null,"abstract":"In this paper, a method is proposed to synthesize acoustic wave duplexers with asymmetric ladder-type channel filters. By relocating the finite transmission zeros based on the sensitivity matrix, all resonators satisfy the requirement of keff2 and no additional lumped elements are needed at the output ports for simple fabrication and integration. Our method is validated by the synthesis of a B2 duplexer prototype, where the Tx and Rx filters operate at 1.88 and 1.96 GHz both with the bandwidth of 60 MHz, respectively. The case of asymmetric filter topology without shunted elements at output ports shows almost the same frequency response as that of the case of symmetric topology with shunted elements.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130717038","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
Flicker Noise Measurement of Phase Shifters Using Interferometric Noise Measurement System 用干涉式噪声测量系统测量移相器的闪烁噪声
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9360024
F. Yang, J.Y. Zhang, J.H. Qie, J. Ma
{"title":"Flicker Noise Measurement of Phase Shifters Using Interferometric Noise Measurement System","authors":"F. Yang, J.Y. Zhang, J.H. Qie, J. Ma","doi":"10.1109/IWS49314.2020.9360024","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9360024","url":null,"abstract":"The interferometric flicker noise measurement system was set up and calibrated by using a novel two source frequency sweeping method. This measurement system features a noise floor of -172 dBrad2/Hz which is sufficient to measure two port microwave components with super low flicker noise. Also some typical microwave phase shifters with super low flicker noise were measured and compared for the first time. It aims to charac-tering the noise performance of the microwave phase shifters which are critical to the real construction or hardware-in-loop simulation of phased array and multi-channel applications.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131134134","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 28 GHz Digital-Controlled 4-bit Vector Modulator Based Phase Shifter Design 基于28 GHz数字控制4位矢量调制器的移相器设计
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/IWS49314.2020.9359922
Xuanhe Liu, Kaijie Ding, Hao Gao
{"title":"A 28 GHz Digital-Controlled 4-bit Vector Modulator Based Phase Shifter Design","authors":"Xuanhe Liu, Kaijie Ding, Hao Gao","doi":"10.1109/IWS49314.2020.9359922","DOIUrl":"https://doi.org/10.1109/IWS49314.2020.9359922","url":null,"abstract":"This paper presents a 4-bit digital-controlled active phase shifter implemented in a 0.25µm SiGe:C BiCMOS process for the fifth-generation (5G) communication. It is designed to cover 27.5 GHz to 28.35 GHz spectrum and to achieve balance among power gain, phase accuracy, power consumption and size. The input signal is first divided into two paths by a transformer-based quadrature generator and then weighted summed by a Gilbert typed variable gain amplifier (VGA). Based on the simulation, the proposed phase shifter achieves average 5.4 dB power gain with 17.5mW power consumption, while obtaining less than 1.5 dB rms gain error from 27 to 28.5 GHz. Both input and output reflection coefficients are lower than -10 dB in the whole designed frequency range.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133562763","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
Calibration and Positioning of nonlinear wideband FMCW radar 非线性宽带FMCW雷达的标定与定位
2020 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2020-09-20 DOI: 10.1109/iws49314.2020.9360111
Rentao Hu, Ping Li
{"title":"Calibration and Positioning of nonlinear wideband FMCW radar","authors":"Rentao Hu, Ping Li","doi":"10.1109/iws49314.2020.9360111","DOIUrl":"https://doi.org/10.1109/iws49314.2020.9360111","url":null,"abstract":"The nonlinearity in the transmitted signal of the Frequency-modulated continuous-wave (FMCW) radar will greatly reduce the accuracy of target positioning. This paper establishes the third order signal model to quantify the nonlinearity for wideband FMCW radars. The signal measurement of reference object can estimate the parameters very well, then the nonlinear sampling of time domain greatly improves the accuracy of RF system measurement, and then a more accurate Positioning model of three-dimensional space target is proposed.","PeriodicalId":301959,"journal":{"name":"2020 IEEE MTT-S International Wireless Symposium (IWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133174334","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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