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2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)最新文献

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A Six-polarized Antenna With Dipoles and Loops
2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2021-11-28 DOI: 10.1109/iWEM53379.2021.9790393
Buyun Wang, S. Yan
{"title":"A Six-polarized Antenna With Dipoles and Loops","authors":"Buyun Wang, S. Yan","doi":"10.1109/iWEM53379.2021.9790393","DOIUrl":"https://doi.org/10.1109/iWEM53379.2021.9790393","url":null,"abstract":"This work proposes a six-polarized antenna by using 3 pairs of orthogonal dipoles and loops collocated at the same physical centers, and the size of the proposed antenna is 30 × 30 × 30 cm3, i.e., (0.52λ0)3. The coupling between the dipoles and the loops can be reduced by rotating their orientations in the 3D space. The simulated results show that the proposed antenna operates at 5.2 GHz with a bandwidth of 300 MHz, and all the values of the port coupling are lower than -13.6 dB. The gain are higher than 2.9 dBi, and 2 dBi for the dipoles and the loops, respectively. The radiation efficiencies are higher than 91%. The envelope correlation coefficients (ECCs) are lower than 0.08, and the degree of freedom (DOF) is 5.75, which can provide a good diversity performance and a high channel capacity in the wireless communication systems.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128467846","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
Beam Width Controlling Technique of Microstrip Patch Antennas Using Small, Flat and Stub-Loaded Ground Plane 微带贴片天线小、平、短接地波束宽度控制技术
2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2021-11-28 DOI: 10.1109/iwem53379.2021.9790480
Lu Liu, Han Wu, Ming-Ge Pan, Wen‐Jun Lu
{"title":"Beam Width Controlling Technique of Microstrip Patch Antennas Using Small, Flat and Stub-Loaded Ground Plane","authors":"Lu Liu, Han Wu, Ming-Ge Pan, Wen‐Jun Lu","doi":"10.1109/iwem53379.2021.9790480","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790480","url":null,"abstract":"A square microstrip patch antenna with small, flat, stub-loaded ground plane is presented. In this manner, the currents on the ground plane can be utilized and manipulated to contribute an adjustable broad beam width characteristic. On the one hand, two parasitic rectangular strips are symmetrically incorporated on the small ground plane of a square microstrip patch antenna to reduce the back-lobe radiation and expand the beamwidth. On the other hand, with the change of ground plane size and stub length, H-plane half-power beamwidth (HPBW) can be remarkably adjusted to vary from 99° to 217°, with the E-plane one less changed. Experimental studies have been performed to verify the design technique. As can be seen, ratio of H-plane and E-plane HPBW can be tuned from 1.45-2.45.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"319 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132224363","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
Two-dimensional Wide-angle Scanning of End-fire Linear Array Based on Reconfigurable AMC 基于可重构AMC的端射线阵二维广角扫描
2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2021-11-28 DOI: 10.1109/iwem53379.2021.9790535
H. Wen, P. Gu, J. Xu, D. Ding, R. Chen
{"title":"Two-dimensional Wide-angle Scanning of End-fire Linear Array Based on Reconfigurable AMC","authors":"H. Wen, P. Gu, J. Xu, D. Ding, R. Chen","doi":"10.1109/iwem53379.2021.9790535","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790535","url":null,"abstract":"In this paper, we use a reconfigurable end-fire antenna unit with four beam directions to form a uniform linear array with 18 elements. The array has a maximum of 70 degrees scan range in the azimuth under a working state. In order to eliminate the back radiation of the antenna array and achieve beam deflection in the elevation direction, we designed an artificial magnetic conductor (AMC) corresponding to the working frequency band of the antenna, and added four PIN diodes states between the patches on the AMC structure to make the reflection phase of AMC unit can be reconstructed, thereby changing the maximum beam direction of the end-fire antenna array, so that the antenna array can scan in the elevation direction.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133231774","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 High-Resolution High-Linearity Three-Step Hybrid Time-to-Digital Converter in 40-nm CMOS 40纳米CMOS高分辨率高线性三步混合时间-数字转换器
2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2021-11-28 DOI: 10.1109/iWEM53379.2021.9790484
Biao Zhang, Xuefei Bai, Zhe Yang
{"title":"A High-Resolution High-Linearity Three-Step Hybrid Time-to-Digital Converter in 40-nm CMOS","authors":"Biao Zhang, Xuefei Bai, Zhe Yang","doi":"10.1109/iWEM53379.2021.9790484","DOIUrl":"https://doi.org/10.1109/iWEM53379.2021.9790484","url":null,"abstract":"In this paper, a high-resolution high-linearity three-step TDC design in 40-nm CMOS technology is presented. The coarse step was designed based on a counter to achieve a wide range. The medium step was designed based on a multi-phase clock interpolation structure with DLL to improve the linearity. The fine step was designed based on a vernier structure with ring oscillators to achieve high resolution. The simulation results show that the design has a 5-ps resolution and a 2-μs range. The DNL is in (−0.2, 0.65) LSB, and the INL is in (−0.9, 0.38) LSB.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133371684","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 Dual-Band Structure-Reused Antenna With Large Frequency Ratio and High Isolation 一种大频率比、高隔离的双频结构复用天线
2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2021-11-28 DOI: 10.1109/iwem53379.2021.9790536
Wei-jun Gui, H. Jin, Wenlei Wang, Guo Qing Luo
{"title":"A Dual-Band Structure-Reused Antenna With Large Frequency Ratio and High Isolation","authors":"Wei-jun Gui, H. Jin, Wenlei Wang, Guo Qing Luo","doi":"10.1109/iwem53379.2021.9790536","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790536","url":null,"abstract":"A dual-band structure-resued antenna with large frequency ratio and high isolation is presented. The antenna is consists of a 4 × 4 substrate integrated waveguide (SIW) cavity-backed slots antenna array working at millimeter-wave (mmW) band and a filtering patch antenna. The overall structure of the mmW array is reused as the radiator of the filtering patch antenna at S-band. To improve the channel isolation, SIW with highpass performance is used at mmW antenna and a patch antenna with bandpass filtering performance is used at S-band. Simulated results show that the proposed antenna works at 3.37 GHz to 3.62GHz and 24.33 GHz to 27.59 GHz with |S11| < -10 dB. The isolation level between two channels is 130 dB at S-band and 60 dB at mmW band, respectively.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122450803","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
Balanced Microstrip Filtering Phase Shifter Using Three-end Folded Coupled Lines 利用三端折叠耦合线的平衡微带滤波移相器
2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2021-11-28 DOI: 10.1109/iWEM53379.2021.9790668
Y. Nie, Wei Zhang, Jin Shi
{"title":"Balanced Microstrip Filtering Phase Shifter Using Three-end Folded Coupled Lines","authors":"Y. Nie, Wei Zhang, Jin Shi","doi":"10.1109/iWEM53379.2021.9790668","DOIUrl":"https://doi.org/10.1109/iWEM53379.2021.9790668","url":null,"abstract":"A balanced microstrip filtering phase shifter using 2 three-end folded coupled lines and 3 transmission lines is proposed. With such structure, multiple differential-mode (DM) transmission zeros (TZs) or common-mode (CM) TZs can be obtained so that good frequency selectivity or wideband CM suppression can be achieved. The phase shift covers the DM performance. Compared with the reported design, the proposed design has wider CM suppression and better frequency selectivity. One 45° prototype is demonstrated. The measured phase shift FBW(45° ± 2.3°) is 43%, 20-dB CM suppression FBW is better than 140%, and 3-dB FBW is 39.4%.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124537535","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
Reconfigurable Intelligent Surface for Regional Signal Enhancement 区域信号增强的可重构智能曲面
2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2021-11-28 DOI: 10.1109/iwem53379.2021.9790457
Jianmin Zhao, Q. Hu, Ke Chen, Na Zhang, Junming Zhao, Yijun Feng
{"title":"Reconfigurable Intelligent Surface for Regional Signal Enhancement","authors":"Jianmin Zhao, Q. Hu, Ke Chen, Na Zhang, Junming Zhao, Yijun Feng","doi":"10.1109/iwem53379.2021.9790457","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790457","url":null,"abstract":"Metasurfaces have emerged as a revolutionary platform for intelligent communications by manipulating electromagnetic waves in dynamic manners. Here, we propose a 2-bit coding reconfigurable intelligent surface to achieve intelligent far-field beamforming, regional signal enhancement, and communication quality improvement through modulating the loaded PIN diodes by an external micro-controller. The experimental results demonstrate the metasurface’s ability in regulating the electromagnetic waves, which may offer great potentials in self-adaptive intelligent wireless communications.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128965331","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 Feeding Method to Excite D-band Dual-polarized Lens Antenna 一种激发d波段双偏振透镜天线的馈电方法
2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2021-11-28 DOI: 10.1109/iWEM53379.2021.9790542
Qingyi Guo, Wenlong He
{"title":"A Feeding Method to Excite D-band Dual-polarized Lens Antenna","authors":"Qingyi Guo, Wenlong He","doi":"10.1109/iWEM53379.2021.9790542","DOIUrl":"https://doi.org/10.1109/iWEM53379.2021.9790542","url":null,"abstract":"In this paper, a new feeding method is proposed to excite a lens antenna in terahertz band. We introduce a dual-polarized (DP) feeding source and a two-port metal adaptor, contributing to a high gain lens excitation. The feeding source provides wideband DP radiation, which can be a feed to excite a lens. For measurement purposes, a two-port metallic adaptor is proposed for providing connection between the source and the flange of waveguide to the equipment. For validation, a DP lens antenna based on LTCC technology is designed and simulated, by using the proposed feeding source and metal adaptor, high gain and wideband DP radiation can be realized.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128404761","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 0.41-THz Coherent Harmonic Radiation Array Based on Mode-dependent Boundaries 基于模相关边界的0.41太赫兹相干谐波辐射阵列
2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2021-11-28 DOI: 10.1109/iwem53379.2021.9790681
Yunfan Wang, Wen-hua Chen, Xingcun Li, Zhaozhu Wang, Jiaxian Chen, Long Chen
{"title":"A 0.41-THz Coherent Harmonic Radiation Array Based on Mode-dependent Boundaries","authors":"Yunfan Wang, Wen-hua Chen, Xingcun Li, Zhaozhu Wang, Jiaxian Chen, Long Chen","doi":"10.1109/iwem53379.2021.9790681","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790681","url":null,"abstract":"This paper presents a simplified design method for coherent terahertz (THz) harmonic radiation array. The mode-dependent boundaries are applied to a half unit, which can be utilized to precisely simulate inter-coupling effects and avoid complex modeling for the entire array. Based on the proposed method, a 0.41-THz radiator with 16 coherent units is designed and characterized. Simulated and measured frequencies match closely, validating the feasibility of the proposed method. The radiator oscillates at 0.205 THz and radiates the second harmonic. The prototype chip is implemented in 130-nm SiGe BiCMOS process (fT/fmax=300/450 GHz). It achieves an effective isotropically radiated power (EIRP) of 12.7 dBm, the directivity of 21.6 dBi while consuming 212 mW from 1.7 V supply.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128483277","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 New Microstrip Patch Antenna with Enhanced Bandwidth and Wideband Harmonic Suppression 一种增强带宽和宽带谐波抑制的新型微带贴片天线
2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2021-11-28 DOI: 10.1109/iwem53379.2021.9790362
Hao Zhang, Feng Huang
{"title":"A New Microstrip Patch Antenna with Enhanced Bandwidth and Wideband Harmonic Suppression","authors":"Hao Zhang, Feng Huang","doi":"10.1109/iwem53379.2021.9790362","DOIUrl":"https://doi.org/10.1109/iwem53379.2021.9790362","url":null,"abstract":"This paper presents a new type of microstrip patch antenna with bandwidth enhancement and harmonic suppression. A new dual-point feeding network is adopted to suppress the high-order harmonics, and a double-layer structure is introduced to enhance the bandwidth of the antenna. In the paper, the characteristics of high-order harmonics up to 2.8 times of working frequency are discussed, and the principle of harmonic suppression and bandwidth enhancement is analyzed in detail. Based on the analysis of the commercial full-wave simulator, i.e., ANSOFT HFSS, the results show that the antenna not only has good harmonic suppression effect, but also broaden the relative bandwidth of the microstrip patch antenna from 0.82% to 11.8%.","PeriodicalId":141204,"journal":{"name":"2021 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115324518","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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