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2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)最新文献

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Reduction of synthetic aperture array element in THz imaging using compressed sensing 压缩传感太赫兹成像中合成孔径阵列元件的缩减
2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2022-08-29 DOI: 10.1109/iWEM52897.2022.9993604
Rio Yanagi, Keizo Cho, H. Nakabayashi, K. Suizu
{"title":"Reduction of synthetic aperture array element in THz imaging using compressed sensing","authors":"Rio Yanagi, Keizo Cho, H. Nakabayashi, K. Suizu","doi":"10.1109/iWEM52897.2022.9993604","DOIUrl":"https://doi.org/10.1109/iWEM52897.2022.9993604","url":null,"abstract":"This paper analyzes the results on the effectiveness of compressed sensing in terahertz wave imaging using a synthetic aperture array of point targets placed at equally spaced straight lines, with the aim of achieving faster measurements and higher image resolution.","PeriodicalId":433151,"journal":{"name":"2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132168074","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
Study on MIMO Communication using Microwave Guided-Modes Propagating along PVC Pipe Wall 微波导模沿PVC管壁传播的MIMO通信研究
2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2022-08-29 DOI: 10.1109/iWEM52897.2022.9993584
Masafumi Suzuki, Kota Fukazawa, Akihoko Hirata, Hiroshi Murata, Masato Mizukami
{"title":"Study on MIMO Communication using Microwave Guided-Modes Propagating along PVC Pipe Wall","authors":"Masafumi Suzuki, Kota Fukazawa, Akihoko Hirata, Hiroshi Murata, Masato Mizukami","doi":"10.1109/iWEM52897.2022.9993584","DOIUrl":"https://doi.org/10.1109/iWEM52897.2022.9993584","url":null,"abstract":"We investigated MIMO communication using a PVC pipe wall as a communication path. We attached two antennas to both end faces of 1-m-long PVC pipe, and evaluated its transmission characteristics. When the antenna was installed on the cross section of the PVC pipe, S21 at 5 GHz was about −25 dB, which was more than 15 dB higher than that in case antennas are set inside the pipe and in free space. MIMO channel capacity becomes maximum (0.98 bit/s/Hz) when the antennas were placed at the same positions at both end faces on the diagonal line of the pipe.","PeriodicalId":433151,"journal":{"name":"2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"249 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121881100","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
Large-Scale MIMO OTA Method for Realizing the Full-Rank Channel Matrix in Cluster Environment 集群环境下实现全秩信道矩阵的大规模MIMO OTA方法
2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2022-08-29 DOI: 10.1109/iWEM52897.2022.9993546
Rio Kitamura, K. Honda
{"title":"Large-Scale MIMO OTA Method for Realizing the Full-Rank Channel Matrix in Cluster Environment","authors":"Rio Kitamura, K. Honda","doi":"10.1109/iWEM52897.2022.9993546","DOIUrl":"https://doi.org/10.1109/iWEM52897.2022.9993546","url":null,"abstract":"In this study, we present a method for over-the-air evaluation in which a full-rank channel matrix is created for a large-scale multiple-input multiple-output (MIMO) antenna in a cluster propagation environment with a Gaussian distributed incoming wave. In the proposed method, to mimic a fading emulator with a large number of scatterers, a limited number of scatterers are virtually arranged depending on the measured channel response. The analytical results show that even though the channel model comprised a limited number of scatterers, a full-rank channel matrix for a massive MIMO antenna system can be obtained by implementing the proposed method.","PeriodicalId":433151,"journal":{"name":"2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125000555","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
Characteristic Analysis of Vehicular 2×2 MIMO Antenna correlation in Actual Environment 车载2×2 MIMO天线在实际环境中的相关特性分析
2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2022-08-29 DOI: 10.1109/iWEM52897.2022.9993514
Tomonori Ikeda, M. Fujimoto, Kazuma Tomimoto, R. Yamaguchi
{"title":"Characteristic Analysis of Vehicular 2×2 MIMO Antenna correlation in Actual Environment","authors":"Tomonori Ikeda, M. Fujimoto, Kazuma Tomimoto, R. Yamaguchi","doi":"10.1109/iWEM52897.2022.9993514","DOIUrl":"https://doi.org/10.1109/iWEM52897.2022.9993514","url":null,"abstract":"A coherent base station scanner has been developed to realize simple and small-scale measurement and evaluation of vehicular MIMO (Multiple-Input and Multiple-Output) under actual environments. In this paper, 2×2 MIMO antenna correlation mounted on vehicular is analyzed using measurement data acquired by the coherent base station scanner in actual LTE (Long Term Evolution) environments. As the results of analysis, the characteristics of antenna correlation for SINR, eigenvalues, and channel capacitance is clarified.","PeriodicalId":433151,"journal":{"name":"2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125940048","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
MACKEY type H with One-Side Short-Circuit Structure for Further Miniaturization MACKEY H型，单侧短路结构，进一步小型化
2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2022-08-29 DOI: 10.1109/iWEM52897.2022.9993519
Kota Hakamata, Keito Yokoe, S. Makino, K. Itoh
{"title":"MACKEY type H with One-Side Short-Circuit Structure for Further Miniaturization","authors":"Kota Hakamata, Keito Yokoe, S. Makino, K. Itoh","doi":"10.1109/iWEM52897.2022.9993519","DOIUrl":"https://doi.org/10.1109/iWEM52897.2022.9993519","url":null,"abstract":"Metasurface-inspired antenna chip developed by KIT EOE Laboratory (MACKEY), operating in free space and on a metal plate, was investigated in this study. Metasurface means controlling the reflection phase. We proposed a method for reducing the size of MACKEY II in the 920 MHz band to less than the size of a credit card.","PeriodicalId":433151,"journal":{"name":"2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124403229","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 Microstrip-Line-Fed Rotman-lens Beamforming Network at 274 GHz 274 GHz微带馈线罗特曼透镜波束形成网络设计
2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2022-08-29 DOI: 10.1109/iWEM52897.2022.9993549
Takafumi Morioka, Shumpei Kishi, K. Sakakibara, Yoshiki Sugimoto, N. Kikuma
{"title":"Design of Microstrip-Line-Fed Rotman-lens Beamforming Network at 274 GHz","authors":"Takafumi Morioka, Shumpei Kishi, K. Sakakibara, Yoshiki Sugimoto, N. Kikuma","doi":"10.1109/iWEM52897.2022.9993549","DOIUrl":"https://doi.org/10.1109/iWEM52897.2022.9993549","url":null,"abstract":"Rotman-lens is widely used in multi-beam antenna as beamforming networks which give several beam directions. Rotman-lens provides discrete beam-scanning by switching input ports. In this paper, we designed a microstrip-line-fed Rotman-lens phase shifter at 274 GHz. The Rotman-lens in this paper is designed using single layer of the multi-layer substrate used in the terahertz frequency band. The results of the simulation confirmed that the output power distributes between −10 to −15 dB. Based on these transmission characteristics obtained from the analysis, it is confirmed that directional scanning in five directions is possible with a size of approximately 5 mm square.","PeriodicalId":433151,"journal":{"name":"2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117135227","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
Probe-fed Wideband Planar Phased Array Antenna Element Using Stacked Rectangular and U-slot Patches in Low Vertical Profile 基于低垂直轮廓矩形和u型槽片叠加的探针馈电宽带平面相控阵天线元件
2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2022-08-29 DOI: 10.1109/iWEM52897.2022.9993595
Jiale Lv, Xiaofei Xu, Bei Zhang
{"title":"Probe-fed Wideband Planar Phased Array Antenna Element Using Stacked Rectangular and U-slot Patches in Low Vertical Profile","authors":"Jiale Lv, Xiaofei Xu, Bei Zhang","doi":"10.1109/iWEM52897.2022.9993595","DOIUrl":"https://doi.org/10.1109/iWEM52897.2022.9993595","url":null,"abstract":"A new probe-fed wideband planar phased array antenna element (PAAE) is designed using stacked rectangular and U-slot patches. The bandwidth for the new PAAE is 3.14-5.44GHz (54%) for all beams radiating from broadside to ±45° on both of E- and H-planes, in which the voltage standing wave ratio is kept smaller than 3. The PAAE is in low vertical profile. The total thickness is only 10mm or normalized as 0.1λL, where λL is the wavelength at the low frequency 3.14GHz.","PeriodicalId":433151,"journal":{"name":"2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"332 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115846329","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
3D-Cell Control Technology for Frequency Sharing between HAPS and Terrestrial Systems 用于HAPS与地面系统频率共享的3d小区控制技术
2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2022-08-29 DOI: 10.1109/iWEM52897.2022.9993573
Y. Hokazono, H. Kohara, Y. Kishiyama, T. Asai
{"title":"3D-Cell Control Technology for Frequency Sharing between HAPS and Terrestrial Systems","authors":"Y. Hokazono, H. Kohara, Y. Kishiyama, T. Asai","doi":"10.1109/iWEM52897.2022.9993573","DOIUrl":"https://doi.org/10.1109/iWEM52897.2022.9993573","url":null,"abstract":"The high-altitude platform station (HAPS) is a promising solution for extreme coverage extension in the Fifth Generation (5G) Evolution and Sixth Generation (6G) eras. By providing radio waves from the stratosphere using HAPS, mobile communications can be made available in all locations that are not adequately covered by conventional mobile communications networks. It is desirable that the HAPS and terrestrial system share a frequency to actualize a direct access service in which terminals connected to the terrestrial International Mobile Telecommunications (IMT) network at 2.7 GHz or less can directly connect to the HAPS. In this paper, we propose a 3D-cell control technology as a load balancing and interference avoidance mechanism when HAPS and terrestrial network share a frequency. Evaluation results based on a 6G system-level simulator show that the load balance and interference-to-noise ratio characteristics are improved in the 2 GHz band.","PeriodicalId":433151,"journal":{"name":"2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132658465","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
Pioneering New Frequency bands towards 6G Mobile Communication Systems 开创6G移动通信系统的新频段
2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2022-08-29 DOI: 10.1109/iWEM52897.2022.9993485
W. Yamada, M. Inomata, Nobuaki Kuno, M. Sasaki, Mitsuki Nakamura, K. Kitao, Takahiro Tomie, S. Suyama
{"title":"Pioneering New Frequency bands towards 6G Mobile Communication Systems","authors":"W. Yamada, M. Inomata, Nobuaki Kuno, M. Sasaki, Mitsuki Nakamura, K. Kitao, Takahiro Tomie, S. Suyama","doi":"10.1109/iWEM52897.2022.9993485","DOIUrl":"https://doi.org/10.1109/iWEM52897.2022.9993485","url":null,"abstract":"Toward the development of the sub-terahertz band in 6G, propagation loss characteristics of 2.2, 26.4 and 158 GHz bands in the urban microcell environment, which is the main usage scenario of mobile communication systems, were measured. In this paper, the measurement results of propagation loss are reported.","PeriodicalId":433151,"journal":{"name":"2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131537644","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 Shared-Aperture Antenna With Large Frequency Ratio for 5G Applications 面向5G应用的大频率比双频共享孔径天线
2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM) Pub Date : 2022-08-29 DOI: 10.1109/iWEM52897.2022.9993559
Yue Zhao, Lei Ge
{"title":"A Dual-band Shared-Aperture Antenna With Large Frequency Ratio for 5G Applications","authors":"Yue Zhao, Lei Ge","doi":"10.1109/iWEM52897.2022.9993559","DOIUrl":"https://doi.org/10.1109/iWEM52897.2022.9993559","url":null,"abstract":"In this paper, a dual-band antenna with large frequency ratio is proposed. By vertically combing a microwave patch antenna and a millimeter-wave (MMW) antenna array, an integrated design with high aperture reuse efficiency is obtained. In the design, the MMW antenna is placed above the microwave antenna and adopts the radiation patch of the microwave antenna as the MMW antenna ground. Through a shorting post of the microwave patch antenna, the microwave and MMW antenna share the common ground. To demonstrate the idea, a design at 3.5 GHz and 26 GHz which are two key bands for 5G communications is presented as an example. 14% bandwidth with 7.4 dBi gain and 8% bandwidth with 16 dBi gain are achieved at 3.5 GHz and 26 GHz band respectively.","PeriodicalId":433151,"journal":{"name":"2022 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition (iWEM)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131004109","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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