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2015 International Workshop on Antenna Technology (iWAT)最新文献

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Design of platform-mounted HF/VHF antennas using the characteristic modes theory 基于特征模理论的平台型高频/甚高频天线设计
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365268
Ting-Yen Shih, N. Behdad
{"title":"Design of platform-mounted HF/VHF antennas using the characteristic modes theory","authors":"Ting-Yen Shih, N. Behdad","doi":"10.1109/IWAT.2015.7365268","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365268","url":null,"abstract":"In many HF/VHF communications applications, the antennas are mounted on vehicular platforms. As such, the combination of the antenna and the platform constitutes the main radiating structure. However, most HF/VHF antennas are generally not designed with the presence of the platform in mind. In this paper, we report the results of a preliminary study in which we investigate how the performance of a platform-mounted antenna can be improved by treating the platform as part of the antenna. Specifically, we examine a simple rectangular-box-shaped platform and examine how the mounted antenna can be used to excite the natural resonant modes of the platform. Since the platform has generally larger physical dimensions than the mounted antenna, efficient excitation of the platform's natural resonance modes is expected to improve the radiating performances of such low-frequency HF/VHF antennas.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"641 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132788622","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
Antennas and propagation for millimeter wave radio systems for 5G mobile networks - the Tokyo Tech wireless fiber project 用于5G移动网络的毫米波无线电系统的天线和传播——东京工业大学无线光纤项目
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365309
M. Ando, J. Hirokawa, M. Zhang, K. Toyosaki, M. Ali, K. Sakaguchi
{"title":"Antennas and propagation for millimeter wave radio systems for 5G mobile networks - the Tokyo Tech wireless fiber project","authors":"M. Ando, J. Hirokawa, M. Zhang, K. Toyosaki, M. Ali, K. Sakaguchi","doi":"10.1109/IWAT.2015.7365309","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365309","url":null,"abstract":"The future mobile network called \"5G\" is becoming a hot topic. The heterogeneous networks using multi-band \"HetNet\" is one of the promising candidates which provide more than 1000 times system capacity. Millimeter-wave is expected to be utilized for the pico cell coverage as well as the fronthaul to connect these enhanced RRHs. This paper reviews the antennas and propagation research works developed in \"Tokyo Tech wireless fiber project\", where many of the project outputs are directly applicable for realization of multi-band HetNet utilizing millimeter wave. The 60GHz compact range communication is focused upon.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114993168","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 low-profile, compact, wideband antenna array with cardioid-shaped radiation patterns in the azimuth plane 一种在方位面上具有心形辐射图样的低姿态、紧凑的宽带天线阵列
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365353
Kasra Ghaemi, N. Behdad
{"title":"A low-profile, compact, wideband antenna array with cardioid-shaped radiation patterns in the azimuth plane","authors":"Kasra Ghaemi, N. Behdad","doi":"10.1109/IWAT.2015.7365353","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365353","url":null,"abstract":"A low-profile, wideband, vertically-polarized antenna array with cardioid-shaped directional radiation characteristics in the azimuth plane is presented. The antenna is composed of four half loops with the shape of bent diamond arms that are fed at the center and short circuited to the ground plane at their ends. Two of the loops are fed in phase and the other two are fed out of phase. Then, these two antenna arrays are fed using a proper feed network to obtain a cardioid-shaped radiation pattern over a large bandwidth (2:1). The antenna array has a compact size with electrical dimensions of 0.65λmin × 0.4 λmin × 0.094 λmin at its lowest frequency of operation.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129572261","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 dual-band fractal slot antenna fed by fractal capacitive coupling 一种分形电容耦合馈电的双频分形缝隙天线
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/ECTICON.2015.7207020
T. Suangun, Norakamon Wongsin, Chatree Mahatthanajatphat, P. Akkaraekthalin
{"title":"A dual-band fractal slot antenna fed by fractal capacitive coupling","authors":"T. Suangun, Norakamon Wongsin, Chatree Mahatthanajatphat, P. Akkaraekthalin","doi":"10.1109/ECTICON.2015.7207020","DOIUrl":"https://doi.org/10.1109/ECTICON.2015.7207020","url":null,"abstract":"A dual-band fractal slot antenna fed by fractal capacitive coupling is presented, which it is responsibility to the characteristics of compact size, low profile and multiple operating frequencies. A technique for reducing electrical length on the antenna is fractal geometry designing with the antenna. The antenna dimension is about 40×46 mm2 which it reduced approximately 20% from conventional patch antenna. Additionally, the antenna has dual-band operation which the frequency ranges are 1920-2170 MHz and 2.4-2.484 GHz. They are included standard of IMT2000 (3th generation) and WLAN IEEE 802.11 b/g consequently. Moreover the impedance bandwidth reached 13% and 9%, respectively. Nevertheless, the characteristic impedance is 50 Ohm in both of operating frequencies which are using a capacitive coupling fed technique. Details and other parameters of the proposed design and measured results are presented and discussed.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129045443","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
Compact inverted-F antenna using coupled-feeding structure for penta-band mobile application 用于五波段移动应用的耦合馈电结构的紧凑型倒f天线
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365354
W. Choi, Seonho Lim, Y. Yoon, K. S. Ryu
{"title":"Compact inverted-F antenna using coupled-feeding structure for penta-band mobile application","authors":"W. Choi, Seonho Lim, Y. Yoon, K. S. Ryu","doi":"10.1109/IWAT.2015.7365354","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365354","url":null,"abstract":"In this paper, a compact Inverted-F Antenna (IFA) is proposed for penta-band (GSM850/900/DCS/PCS/WCDMA bands) operation. The proposed IFA is designed with a compact size of 28.75 mm × 16.7 mm and printed on one layer substrate for the simple design and low-profile configuration, and cost-effectiveness. The IFA is modified by dividing the radiating strip in order to realize a multi-band operation. Each radiating strip operates in GSM850/900, and DCS/PCS/WCDMA bands, individually. The penta-band operation is realized by the proposed IFA which consists of both strips with reliable radiation performance. The size of proposed IFA is 140 mm × 80 mm including the size of the FR4 substrate whose thickness is 0.6 mm. The simulations are performed for analyzing the radiation performances and operation of the proposed IFA. The obtained operating bandwidths are 800-970 MHz and 1480-2310 MHz and the radiation performances are reported as reliable results in this paper.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"283 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123727102","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
Microfluidically tunable paper-based inkjet-printed metamaterial absorber 微流控可调纸基喷墨印刷超材料吸收器
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365331
K. Ling, M. Yoo, K. Kim, S. Lim, W. Su, B. Cook, M. Tentzeris
{"title":"Microfluidically tunable paper-based inkjet-printed metamaterial absorber","authors":"K. Ling, M. Yoo, K. Kim, S. Lim, W. Su, B. Cook, M. Tentzeris","doi":"10.1109/IWAT.2015.7365331","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365331","url":null,"abstract":"This paper describes a tunable metamaterial (MM) absorber that incorporates novel microfluidic channels and is realized using inkjet printing on a photo-paper substrate. The fabricated sample demonstrated frequency-switching capability owing to distilled water flowing in the microfluidic channels. In addition, the resonant frequency was changed from 4.42 to 3.97 GHz when the empty channels were filled with de-ionized water. An analysis of the results suggests that microfluidic technology is a simpler and more effective way to achieve tuning functionality. The proposed structure is the first microfluidic absorber based on a photo-paper substrate.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126877833","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
Bandwidth enhancement of microstrip line slot array antenna 微带线槽阵列天线的带宽增强
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365381
T. Okura, H. Arai
{"title":"Bandwidth enhancement of microstrip line slot array antenna","authors":"T. Okura, H. Arai","doi":"10.1109/IWAT.2015.7365381","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365381","url":null,"abstract":"In this paper, we propose a wideband microstrip line slot array antenna. A microstrip line slot array antenna is constituted by a slot fed in series using the microstrip line. This antenna has features that the feeding loss is small and it is easy to configure the array antenna of the multi-element. However, the bandwidth is narrow compared with a conventional parallel fed array antenna. To overcome this disadvantage, we propose the method of appropriate placement of the slot operating at different frequencies as the method of enhancement bandwidth of slot array antenna.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126488498","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
Novel probe-exciting feed structure for improving bandwidth of waveguide broad wall slot array antenna 提高波导宽壁缝隙阵列天线带宽的新型探针激励馈电结构
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365329
JoungMyoung Joo, Jongkuk Park, In-Hee Han, Ji-Hoon Jeong, Gyu-Yeon Kim, Dongwoon Lee
{"title":"Novel probe-exciting feed structure for improving bandwidth of waveguide broad wall slot array antenna","authors":"JoungMyoung Joo, Jongkuk Park, In-Hee Han, Ji-Hoon Jeong, Gyu-Yeon Kim, Dongwoon Lee","doi":"10.1109/IWAT.2015.7365329","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365329","url":null,"abstract":"In this paper, a novel probe-exciting feed structure was proposed for improving the bandwidth of a waveguide broad wall slot array antenna. Both a conventional inclined slot feed and the proposed one are applied to the design of the broad wall slot arrays with the same specification, respectively, and then, their results are compared by using the full-wave EM simulation. As expected, the bandwidth of the array with the proposed feed structure has been improved by about 15.3 % compared with that of the array with the conventional inclined slot feed. Also, it is shown that the proposed feed provides a better azimuth sidelobe level(SLL) by about 3.7 dB than the conventional one.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115262423","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
Operation mechanism of reflector backed dipole antenna with loop shaped parasitic elements 环形寄生元件反射背偶极子天线的工作机理
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365378
Takayoshi Sasaki, Keizo Cho, T. Ihara, Tatsuhiko Yoshihara
{"title":"Operation mechanism of reflector backed dipole antenna with loop shaped parasitic elements","authors":"Takayoshi Sasaki, Keizo Cho, T. Ihara, Tatsuhiko Yoshihara","doi":"10.1109/IWAT.2015.7365378","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365378","url":null,"abstract":"This paper investigates the operation mechanism of a reflector backed dipole antenna with proximity placed loop-shaped parasitic elements (RBD-LE) by considering the current distribution of various antenna configurations. Moreover, the measurements are conducted to verify the validity of the simulation results.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132361632","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 of characteristic modes analysis applied for antenna parameters optimizing 特征模态分析在天线参数优化中的应用研究
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365291
Shen Wang, H. Arai
{"title":"Study of characteristic modes analysis applied for antenna parameters optimizing","authors":"Shen Wang, H. Arai","doi":"10.1109/IWAT.2015.7365291","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365291","url":null,"abstract":"To efficiently optimize antenna parameters, we need to know more physical insight of antenna operating principles. The theory of characteristic modes is one of the best methods to help us penetratingly understand the antenna's operating principles. This paper is devoted to apply the theory of characteristic modes to provide an in-depth physical insight into the behavior of some proposed antennas and subsequently get desired input property or radiation property.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126187209","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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