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2019 International Symposium on Antennas and Propagation (ISAP)最新文献

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Single-layer high-gain planar lens antenna based on the Focusing Gradient Meta-surface 基于聚焦梯度元曲面的单层高增益平面透镜天线
2019 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2019-10-01 DOI: 10.1002/mmce.22183
F. Xue, Shaobin Liu, X. Kong
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引用次数: 10
Control of Radiation Direction in an Aperture Array excited by a Waveguide 2-plane Hybrid Coupler 波导双平面混合耦合器激励下孔径阵列辐射方向的控制
2019 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2019-10-01 DOI: 10.1587/transcom.2021ebp3143
Yuki Sunaguchi, T. Tomura, J. Hirokawa
{"title":"Control of Radiation Direction in an Aperture Array excited by a Waveguide 2-plane Hybrid Coupler","authors":"Yuki Sunaguchi, T. Tomura, J. Hirokawa","doi":"10.1587/transcom.2021ebp3143","DOIUrl":"https://doi.org/10.1587/transcom.2021ebp3143","url":null,"abstract":"The authors design a plate that controls the beam direction in an aperture array excited by a waveguide 2-plane hybrid coupler. The beam direction can be controlled in a range of ±18-38 deg. in the quasi H-plane, and ±27-54 deg. in the quasi E-plane at the design frequency of 66 GHz. Inductive irises are introduced into tapered waveguides in the plate and suppressed the reflection due to the narrow apertures.","PeriodicalId":198648,"journal":{"name":"2019 International Symposium on Antennas and Propagation (ISAP)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117089333","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
Compact Wideband Multi-Section Quarter-Wave-Like Transformers with Unequal Electrical Lengths 具有不等电长度的紧凑型宽带多段四分之一波型变压器
2019 International Symposium on Antennas and Propagation (ISAP) Pub Date : 2018-06-07 DOI: 10.1080/09205071.2018.1482239
T. Satitchantrakul, D. Torrungrueng
{"title":"Compact Wideband Multi-Section Quarter-Wave-Like Transformers with Unequal Electrical Lengths","authors":"T. Satitchantrakul, D. Torrungrueng","doi":"10.1080/09205071.2018.1482239","DOIUrl":"https://doi.org/10.1080/09205071.2018.1482239","url":null,"abstract":"This paper proposes quarter-wave-like transformers (QWLTs) with unequal electrical lengths to miniaturize multi-section quarter wave transformers (QWTs) and to enhance the bandwidth. The proposed method extends a study of the approximate theory of small reflections (ATSR) for QWLTs called the extended approximate theory of small reflections (EATSR). The total input reflection coefficient is observed in the frequency range of interest. Results of the EATSR for both two-and three-section unit cells with 25% physical size reduction prove that their impedance bandwidths are broader than those of the standard multi-section QWTs and the ATSR for QWLTs.","PeriodicalId":198648,"journal":{"name":"2019 International Symposium on Antennas and Propagation (ISAP)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131030561","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
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