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

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2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-10-11 DOI: 10.1109/iws52775.2021.9499374
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引用次数: 0
A Miniaturized Antipodal Vivaldi Antenna with Flat Gain for RF Energy Harvesting 一种用于射频能量收集的小型平增益对跖维瓦尔第天线
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499695
Changye Liang, Chonghu Cheng
{"title":"A Miniaturized Antipodal Vivaldi Antenna with Flat Gain for RF Energy Harvesting","authors":"Changye Liang, Chonghu Cheng","doi":"10.1109/IWS52775.2021.9499695","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499695","url":null,"abstract":"A miniaturized Antipodal Vivaldi Antenna (AVA) with flat gain is proposed in this paper for UWB applications. This antenna is implemented by loading a pair of open stubs, comb-shaped slot array, and semi-elliptical patches on a traditional AVA. The miniaturization property is obtained as a result of the introduction of comb-shaped slits which increases the surface current path. The function of the pair of open stubs is to improve the gain in the lower frequency band, while the effect of the pair of semi-elliptical patches is to maintain the gain in the higher frequency band. In order to verify this design concept, a prototype of the proposed AVA is fabricated and measured. The measured results show that VSWR < 2 in the frequency band of 3 – 11GHz and the average gain in is 8.9 dBi in the end-fire direction. Besides the gain fluctuation is ± 1.1dB within this impedance bandwidth, achieving a relatively flat gain.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"29 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":"127096353","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 and Design of Multifunctional Filtering Power Dividers 多功能滤波分压器的分析与设计
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499659
Gang Zhang, Zhuowei Zhang, Rui Li
{"title":"Analysis and Design of Multifunctional Filtering Power Dividers","authors":"Gang Zhang, Zhuowei Zhang, Rui Li","doi":"10.1109/IWS52775.2021.9499659","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499659","url":null,"abstract":"A direct synthesis design technique of multi-band multi-port filtering power dividers (FPDs) with arbitrary phase distribution is presented. After a set of complete closed-form analytical equations are established for direct synthesis design, the proposed method is intensively described to reveal its powerful capacity in design of a multifunctional FPD with any prespecified responses (e.g. any order, number of bands, number of ports, phase distribution etc.), high multi-band isolations and matching. To validate this design concept, a triple-band three-port FPD with phase difference of 90° has been implemented. The performance of the newly designed FPD is demonstrated by simulation results.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"19 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":"124906431","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
Development and preliminary experimental results of novel three-band multi-polarization airborne SAR system 新型三波段多极化机载SAR系统研制及初步实验结果
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499585
Kun Xing, Wenwen Li, Yabo Liu, Qingxin Chen, Lin Liu, Zhongjun Yu
{"title":"Development and preliminary experimental results of novel three-band multi-polarization airborne SAR system","authors":"Kun Xing, Wenwen Li, Yabo Liu, Qingxin Chen, Lin Liu, Zhongjun Yu","doi":"10.1109/IWS52775.2021.9499585","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499585","url":null,"abstract":"Compared with traditional single-channel synthetic aperture radar (SAR) system, the multi-band, multi-polarization SAR system can obtain more observation information to improve the ability of targets recognition, and becomes an important research direction. Therefore, we developed a new highly integrated airborne three-band multi-polarization SAR system, which works in low/medium/high (L/X/Ka band) frequency, and has the ability of full-polarity. Three-band phased array antennas are integrated a whole coplanar structure, and controlled by one task management unit. Each band of the system can work alone or together at the basis frequency and basis time, to obtain different frequency SAR images of the same area simultaneously. The results of flight experiments verify the function and performance of the system effectively. The design and application of this SAR system is significant for quantitative remote sensing observation and instructive for future radar system development.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"26 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":"125033035","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
High Selectivity Filtering Patch Antenna Using Parasitic Patches 利用寄生贴片的高选择性滤波贴片天线
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499474
Gen-Zhu Liang, Fulong Chen
{"title":"High Selectivity Filtering Patch Antenna Using Parasitic Patches","authors":"Gen-Zhu Liang, Fulong Chen","doi":"10.1109/IWS52775.2021.9499474","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499474","url":null,"abstract":"A filtering patch antenna based on parasitic patches is proposed in this paper. The filtering antenna is mainly composed of a driven patch, a parasitic rectangular patch, and a parasitic ring patch. The combination of the driven patch and parasitic rectangular patch can create a radiation null at the upper band edge, while the addition of parasitic ring patch can introduce another radiation null at the lower band edge. The propose antenna exhibits a quasi-elliptic boresight gain response with the help the two radiation nulls. The simulated| S11| of the proposed antenna is less than −10 dB in the range of 0.92-1.08 GHz (16%). Without extra filtering circuits, the antenna achieves an average simulated gain of 9.3 dBi within passband.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"28 4C 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":"123334572","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 D-Band I/Q Drain Mixer for Direct Up-convertion in 70-nm GaAs Technology 用于70纳米GaAs技术直接上转换的d波段I/Q漏极混频器
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499424
Zizhou Ye, Fei Yang
{"title":"A D-Band I/Q Drain Mixer for Direct Up-convertion in 70-nm GaAs Technology","authors":"Zizhou Ye, Fei Yang","doi":"10.1109/IWS52775.2021.9499424","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499424","url":null,"abstract":"An I/Q up-conversion MMIC that works in the D-band with the 70nm mHEMT GaAs process is designed in this paper, using a transistor drain mixing unit. The mixer can maintain good performance in the 125-155 GHz frequency band. Without adding any pre- or post-amplifier, the measured conversion gain is −8 dB, the input IF bandwidth exceeds 10 GHz and the isolation between ports is greater than 20 dB. It maintains good linearity under the IF input power of less than 2dBm. The performance parameters of this upconverter are predominant among the GaAs mHEMT-based mixers reported in this frequency band.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"52 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":"123467949","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
Shielded Stripline Bandpass Filters with Low Insertion Loss for 5G Applications 低插入损耗的5G屏蔽带线带通滤波器
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499399
Hanyu Tian, M. Geng, Yuandan Dong
{"title":"Shielded Stripline Bandpass Filters with Low Insertion Loss for 5G Applications","authors":"Hanyu Tian, M. Geng, Yuandan Dong","doi":"10.1109/IWS52775.2021.9499399","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499399","url":null,"abstract":"A novel method to design stripline filters with shielding structure is presented in this paper. By applying a shielded substrate integrated cavity a fully closed, 3rd-order filter with low loss is proposed for 5G N79 band. The shielding vias and copper layers form an enclosed cavity for the stripline filter composed of two gradient impedance resonators (GIR) and one stepped impedance resonator (SIR), which removes the radiation loss and improves the selectivity performance. A transmission zero is obtained by equating the gradient and low impedance parts of the GIR to an open-ended quarter wavelength stub. On the basis of this filter, a 2nd filter is designed by introducing a defected ground structure (DGS) and quarter wavelength stubs, which expands the passband and stopband. Both filters are fabricated and measured. The measured results are in good agreement with simulation, which validate the proposed design methodology. The minimum insertion loss is 0.46 dB and 0.25 dB for these two filters, respectively. The two filters are good candidates for 5G N79 applications.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"23 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":"123482319","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
Array Antenna Synthesis With Cross-Polarization Suppression Via Convex Optimization 基于凸优化的交叉极化抑制阵列天线合成
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499566
Shiwen Lei, Haoquan Hu, Jing Tian, Yongfang Bao, Yin Gao, Jun Xu
{"title":"Array Antenna Synthesis With Cross-Polarization Suppression Via Convex Optimization","authors":"Shiwen Lei, Haoquan Hu, Jing Tian, Yongfang Bao, Yin Gao, Jun Xu","doi":"10.1109/IWS52775.2021.9499566","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499566","url":null,"abstract":"The paper focuses on the problem of suppressing the cross-polarization level (XPL) when simultaneously receiving orthogonal polarization signal from different directions with a wide-beam common aperture array antenna. The polarizations are the the right-hand circular polarization (RHCP) and the lefthand circular polarization (LHCP). The paper firstly sets up a non convex optimization problem and then converts it into a series of convex problems. An iterative algorithm is designed to solve the new convex problems, in which two tuning parameters are utilized to guarantee the convergence. With the proposed scheme, the XPL in the LHCP (RHCP) signal direction for the RHCP (LHCP) receiving could be suppressed to the desired level. In addition, the designed scheme can be easily extended to optimize the mainlobe ripple level (MRL) and the sizelobe level (SLL) with a simply derivation.","PeriodicalId":260591,"journal":{"name":"2021 IEEE MTT-S International Wireless Symposium (IWS)","volume":"38 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":"125325169","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
SAR Target Detection Based on NCM-1K Clustering 基于NCM-1K聚类的SAR目标检测
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499650
Lina Zeng, Deyun Zhou, Xiaoyang Li, Weiren Kong, Weinan Gao
{"title":"SAR Target Detection Based on NCM-1K Clustering","authors":"Lina Zeng, Deyun Zhou, Xiaoyang Li, Weiren Kong, Weinan Gao","doi":"10.1109/IWS52775.2021.9499650","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499650","url":null,"abstract":"In training-free Synthetic Aperture Radar (SAR) target detection, it is difficult to distinguish targets and non-targets accurately. To solve the problem, a new improved NCM clustering method with one clustering center (K=1), as called NCM-1K clustering method, is proposed in this paper. The principle of NCM-1K is to divide the potential target areas into target areas and non-target areas according to the Polar Scale-Invariant Feature Transform (PSIFT) descriptor. The proposed NCM-1K clustering method can realize the SAR target detection with free-training. Experimental results verify the feasibility and effectiveness of proposed method.","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":"115217079","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
Quad-Band Impedance Transformer for Extremely High Load Impedance Matching with Out-of-Band Spurious Response Suppression 带外杂散响应抑制极高负载阻抗匹配的四频带阻抗变压器
2021 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2021-05-23 DOI: 10.1109/IWS52775.2021.9499493
R. Barik, Q. Cheng, S. Koziel
{"title":"Quad-Band Impedance Transformer for Extremely High Load Impedance Matching with Out-of-Band Spurious Response Suppression","authors":"R. Barik, Q. Cheng, S. Koziel","doi":"10.1109/IWS52775.2021.9499493","DOIUrl":"https://doi.org/10.1109/IWS52775.2021.9499493","url":null,"abstract":"A novel approach to design a quad-band impedance transformer (QBIT) is presented. The primary purpose of this transformer is to match an extremely high load impedance to a source impedance of 50Ω at four distinct frequency bands with suppression of the spurious passband. The proposed QBIT is constructed using a π-shaped topology and two series microstrip-lines. The ABCD matrix method is employed to derive closed-form design formulas. The latter are employed to obtain the circuit parameters that allow for matching extremely high load impedances. For validation, two prototypes of QBIT realized to match 500Ω and 1500Ω loads are fabricated and measured. The simulated and measured transformer characteristics are in good agreement.","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":"129935894","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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