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

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A polarization-reconfigurable rectenna for microwave power transmission 一种用于微波功率传输的极化可重构整流天线
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365380
Ping Lu, Xue‐Song Yang, Jia‐lin Li, Bing-Zhong Wang
{"title":"A polarization-reconfigurable rectenna for microwave power transmission","authors":"Ping Lu, Xue‐Song Yang, Jia‐lin Li, Bing-Zhong Wang","doi":"10.1109/IWAT.2015.7365380","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365380","url":null,"abstract":"A polarization reconfigurable rectenna, which consists of a polarization reconfigurable planar monopole antenna and a planar rectifying circuit, is proposed for microwave power transmission (MPT). The planar monopole is designed with one linear polarization (LP) and two circular polarizations (CPs). The rectifying circuit is connected to the antenna with a 50 Ohm microstrip line. The rectenna can harvest the RF power from 5.07 GHz to 5.86 GHz and convert it to DC power efficiently, exhibiting conversion efficiency from 40.2 % to 57.4 % with input power of 16.5 dBm. Simulated results are confirmed through the experiment.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"67 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":"131403699","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
Wideband and beam-scanning reflectarrays 宽带和波束扫描反射射线
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365307
Fan Yang
{"title":"Wideband and beam-scanning reflectarrays","authors":"Fan Yang","doi":"10.1109/IWAT.2015.7365307","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365307","url":null,"abstract":"Reflectarray antenna attracts growing interests in the last decades. This paper presents some recent developments on reflectarray antennas, namely, a broadband reflectarray antenna and a beam-scanning reflectarray antenna. They demonstrate great potential in satellite communications, remote sensing, and radar applications.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"8 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":"125343623","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
Handheld beamforming antennas adoptable to 5G wireless connectivity 适用于5G无线连接的手持波束形成天线
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365316
K. Jang, M. K. Khattak, J. Jeon, H. Kim, S. Kahng, Louis J. Kim, Klaus B. Kim
{"title":"Handheld beamforming antennas adoptable to 5G wireless connectivity","authors":"K. Jang, M. K. Khattak, J. Jeon, H. Kim, S. Kahng, Louis J. Kim, Klaus B. Kim","doi":"10.1109/IWAT.2015.7365316","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365316","url":null,"abstract":"This paper presents the design of high-frequency handheld beamforming antennas aimed at the 5th generation wireless communication and shows the frequency responses and radiation characteristics. It is revealed that the proposed four-element 24-GHz resonance array antenna fits the placement in the top side of a handset phone, and scans the upward 120o-range in the elevation plane with the movable main-beam of the antenna efficiency over 70 % and the peak-gain greater than 8 dBi up to 10.5 dBi at the aforementioned target millimeter-wave frequency.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"35 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":"126542555","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: 5
Analysis of the reasons of uncertainty in 60 GHz small antenna design and measurement 60ghz小型天线设计与测量中的不确定因素分析
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365315
Y. She, M. Ameya, S. Kurokawa, J. Hirokawa, R. Suga, Y. Hirachi, S. Sasaki
{"title":"Analysis of the reasons of uncertainty in 60 GHz small antenna design and measurement","authors":"Y. She, M. Ameya, S. Kurokawa, J. Hirokawa, R. Suga, Y. Hirachi, S. Sasaki","doi":"10.1109/IWAT.2015.7365315","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365315","url":null,"abstract":"This paper analysis the reasons of the uncertainty of the 60 GHz small antenna. A poorly fabricated example shows the reasons of the difference in performance between the expected antenna and the practical one. On the other hand, another example is measured by two different systems. The measured radiation patterns show the reasonable uncertainty factors in the measurement facilities.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"26 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":"117252636","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: 4
Design of arc-shaped patch antenna arrays for GPS applications 用于GPS应用的弧形贴片天线阵列设计
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365303
G. Byun, Dae-Heon Lee, H. Choo
{"title":"Design of arc-shaped patch antenna arrays for GPS applications","authors":"G. Byun, Dae-Heon Lee, H. Choo","doi":"10.1109/IWAT.2015.7365303","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365303","url":null,"abstract":"This paper proposes the design of an arc-shaped patch antenna for GPS arrays that is composed of an arc-shaped patch with two parasitic elements. The antenna is then arranged in a three-element circular array with an inter-element spacing of about a quarter wavelength, and the isolation characteristics are further improved by inserting a slot to the ground plate. Detailed design parameters are optimized by using the GA, and reflection coefficient, axial ratio, and radiation gain are measured in a semi anechoic chamber. The results demonstrate that the antenna is suitable to be used for GPS antenna arrays with good circular polarization properties.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"7 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":"125324799","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
An all-textile antenna with EBG structure for on-body communication 一种具有EBG结构的全身通信全织物天线
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365351
J. Tak, Jaehoon Choi
{"title":"An all-textile antenna with EBG structure for on-body communication","authors":"J. Tak, Jaehoon Choi","doi":"10.1109/IWAT.2015.7365351","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365351","url":null,"abstract":"In this paper, an all-textile antenna with EBG structure for on-body communication is proposed. The proposed antenna consists of center-fed circular patch to generate TM01 mode wave and EBG structure around the patch to guide TM01 wave along the horizontal surface (θ = 90°). The EBG structure acts as an inductively reactive surface to support TM01 mode wave along the body surface. The proposed antenna is designed by using textile materials (conductive textile, conductive thread, and leather substrate) and has monopole-like radiation enhanced along the surface direction in 5.8 ISM GHz band. The proposed antenna has a radius of 50 mm (0.96 λ0 at 5.8 GHz) and a thickness of 3 mm (0.058 λ0 at 5.8 GHz). The antenna gain on the phantom surface (θ = 90°) is improved by 3.3 dB from -5.38 dBi without EBG ground to -2.08 dBi with EBG ground. The peak gain direction is increased from 30° to 75° and near broadside gain is suppressed about 9.6 dB (θ = 30°).","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"15 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":"125554815","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: 3
Comparison of antenna parameters of R-/S-band standard gain antennas R / s波段标准增益天线的天线参数比较
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365290
Jin-Seob Kang, Jeong-Hwan Kim, J. Park
{"title":"Comparison of antenna parameters of R-/S-band standard gain antennas","authors":"Jin-Seob Kang, Jeong-Hwan Kim, J. Park","doi":"10.1109/IWAT.2015.7365290","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365290","url":null,"abstract":"A comparison of antenna parameters (i.e. antenna gain, radiation pattern and reflection coefficient) for R-band (1.7-2.6 GHz) and S-band (2.6-3.95 GHz) standard gain antennas has been performed between Korea Research Institute of Standards and Science (KRISS) and seven domestic participants including private companies and public organizations. Its purpose, as a proficiency test program of the `Antenna Measurement Club' of KRISS, was to check equivalences in antenna parameters measurements, particularly in R-/S-band, between KRISS and participants to support antenna manufacturers and end users in Korea. This comparison uses two traveling standards (i.e. R-/S-band pyramidal standard gain horn antennas) and measurement parameters are the power gain, radiation pattern and reflection coefficient of the traveling standards. Gain comparison method and extrapolation method are used in this comparison.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"48 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":"128828890","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: 5
Beam space MIMO-OFDM system based on ESPAR antenna 基于ESPAR天线的波束空间MIMO-OFDM系统
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365364
H. Ryu, Bong-Jun Kim
{"title":"Beam space MIMO-OFDM system based on ESPAR antenna","authors":"H. Ryu, Bong-Jun Kim","doi":"10.1109/IWAT.2015.7365364","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365364","url":null,"abstract":"In this study, we like to show the beam space multiple-input and multiple-output orthogonal frequency division multiplexing (BS MIMO-OFDM) system based on the electronic steerable parasitic array radiator (ESPAR) antenna. This BS MIMO-OFDMMO transmission uses a single active antenna compared to the conventional MIMO transmission which requires multiple antennas to get multiplexing gain. For this reason, the hardware complexity of this system is reduced compared to the conventional MIMO system. Also, it is possible to miniaturize the antenna size. This paper proposes the transmitter and receiver structure for BS MIMO-OFDM system and analyzes the system performance. The proposed system has small degradation of BER performance. When the power of transmitted OFDM signal is low, the miss detection probability at the receiver occurs. In order to prevent this phenomenon, this paper would like to improve BER performance of BS-MIMO system by setting thresholds on the transmission power of an OFDM signal.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"30 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":"129043275","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: 3
Metamaterial-based spiral antenna with unbalanced excitation 基于非平衡激励的超材料螺旋天线
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365341
H. Nakano, K. Anjo, J. Yamauchi
{"title":"Metamaterial-based spiral antenna with unbalanced excitation","authors":"H. Nakano, K. Anjo, J. Yamauchi","doi":"10.1109/IWAT.2015.7365341","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365341","url":null,"abstract":"The radiation from a metamaterial-based two-arm spiral antenna is investigated, where the phase relationship of the excitation sources for the two arms (deviation phase) is varied to cause unbalanced-mode excitation. It is found that the radiation field in the antenna-axis direction decreases by 1-dB when the deviation phase reaches approximately 60 degrees.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"51 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":"121280125","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
Wireless power transfer and biotelemetry in a leadless pacemaker 无铅起搏器中的无线电力传输和生物遥测
2015 International Workshop on Antenna Technology (iWAT) Pub Date : 2015-03-04 DOI: 10.1109/IWAT.2015.7365282
Rupam Das, H. Yoo
{"title":"Wireless power transfer and biotelemetry in a leadless pacemaker","authors":"Rupam Das, H. Yoo","doi":"10.1109/IWAT.2015.7365282","DOIUrl":"https://doi.org/10.1109/IWAT.2015.7365282","url":null,"abstract":"In this paper, we address the telemetry and wireless powering problems associated with the recently invented leadless pacemaker. To overcome the telemetry problem, we propose a conformal spiral type Implantable antenna at Medical Implanted Communication Service (MICS) band. In addition, we also apply the recently proposed midfield wireless power transfer (WPT) technique at 1.5 GHz to avoid the bulky energy storage component. We simulate and experimentally measure the performance of the implantable antenna by using porcine heart tissue. Our research shows that, the implantable antenna and wireless power transfer scheme can be implemented in a leadless pacemaker without any significant coupling between them.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"44 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":"132011862","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
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