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Graphene-based Optically Transparent and Dynamically Tunable Metasurface with Anisotropic Modulations 具有各向异性调制的基于石墨烯的光学透明和动态可调超表面
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9793095
Jin Zhang, Weiren Zhu
{"title":"Graphene-based Optically Transparent and Dynamically Tunable Metasurface with Anisotropic Modulations","authors":"Jin Zhang, Weiren Zhu","doi":"10.1109/piers55526.2022.9793095","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793095","url":null,"abstract":"Recently, a series of microwave metasurfaces that are based on graphene have been developed rapidly, showing excellent performances in manipulating electromagnetic (EM) waves. However, independent control of amplitude and frequency of microwaves has not been realized in graphene-based metasurfaces until now. In this paper, we present an active metasurface based on graphene to realize anisotropic and independent modulations in reflected amplitude and resonant frequency of orthogonally polarized microwaves in real time. This work offers an novel approach of graphene-based device in the manipulation of microwaves and has potential applications in antenna, sensing and communications.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123342789","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
Electromagnetic Coupling between Power Distribution Network and On-chip Inductors in Package 封装中配电网与片上电感的电磁耦合
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9792784
Bing-Heng Li, Yan Li, Erping Li
{"title":"Electromagnetic Coupling between Power Distribution Network and On-chip Inductors in Package","authors":"Bing-Heng Li, Yan Li, Erping Li","doi":"10.1109/piers55526.2022.9792784","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792784","url":null,"abstract":"Electromagnetic interference (EMI) is a growing concern in integrated circuits as the operating frequency of electronic devices increases rapidly. In this paper, the electromagnetic coupling mechanism between the power distribution network (PDN) and on-chip inductors in the package is discussed. The full-wave simulation software CST is employed to obtain noise voltages. For the two inductors placed symmetrically, the amplitudes of two voltages with opposite polarity induced by the inductors are not equal, so there is a net voltage on the PDN. In order to reduce the noise voltage, two approaches have been proposed. Designing the PDN with dual supply voltages and dual grounds (DSDG) can reduce the noise voltage by 86.3%. And etching metal layer 1st under the inductors can reduce the noise voltage by 35.0% while etching metal layers 1st, 2nd can reduce the noise voltage by 72.9%.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123464539","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 Assessment of MWHTS Onboard FY-3C/D Over Quasi-Stable Scenes FY-3C/D星载MWHTS准稳定场景评估
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9793138
Jieying He, Yang Guo, Shengwei Zhang
{"title":"An Assessment of MWHTS Onboard FY-3C/D Over Quasi-Stable Scenes","authors":"Jieying He, Yang Guo, Shengwei Zhang","doi":"10.1109/piers55526.2022.9793138","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793138","url":null,"abstract":"Radiation characteristics of brightness temperatures over the PUER rain forest observed by the FY-3C/D Microwave humidity and temperature sounder (MWHTS) oxygen absorbing channels are studied. To demonstrate the characteristics of the data over PUER rain forest site, time series of monthly averages of the brightness temperatures are constructed for August from 2013 to 2020. The measured uncertainty distributions of brightness temperatures with frequencies centered at 118.75 GHz are investigated in terms of angular-dependent cohesive noise mitigation. Observations data used in this study are collected from April 2019 to March 2020 every orbit for FY-3C/D satellites. Such a close resemblance and stable pattern of uncertainty distributions from the two satellites with different equator crossing times are potentially useful for post launch calibration of future microwave radiometers. Results show that there are cohesive distributions in measurements during PUER observing from each satellite. Therefore these measurements provide a practical approach to obtain the calibrated model of inter-satellite data.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121266948","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
Doping Effect on Ferroelectric Soft Optic Mode of SrTiO3 Crystals with Cubic Perovskite Structure 掺杂对立方钙钛矿结构SrTiO3晶体铁电软光学模式的影响
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9793021
S. Kojima
{"title":"Doping Effect on Ferroelectric Soft Optic Mode of SrTiO3 Crystals with Cubic Perovskite Structure","authors":"S. Kojima","doi":"10.1109/piers55526.2022.9793021","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793021","url":null,"abstract":"In order to clarify the correlation between the polar instability and carrier electrons in provskite oxides, the terahertz dielectric response was studied in A- and B-site replaced strontium titanate SrTiO3 (STO) crystals. Ferroelectric soft optic modes with T1u symmetry and carrier electrons in the Pm-3m phase were investigated by the measurement of the complex dielectric constants using the terahertz time-domain spectroscopic ellipsometry (THz-TDSE). The observed real and imaginary parts of a complex dielectric constant were analyzed by the damped harmonic oscillator model for the ferroelectric soft optic mode and the Drude-Smith model for carrier electrons introduced by heterovalent doping. For the A-site replaced La doped STO and B-site replaced Nb doped STO crystals, the soft mode frequency increases as the La and Nb content increases. The good correlation is found between the ferroelectric soft mode frequency and the carrier electron concentration. It is concluded from this fact that the increase of the carrier electron concentration induced by donor doping essentially suppresses the ferroelectric instability and the hardening of a ferroelectric soft mode frequency occurs.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"498 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126425623","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
Simultaneous Detection of Modal Composition and Wavelength of OAM Fields Using a Hexagonal Vortex Filter 利用六边形涡旋滤波器同时检测OAM场的模态组成和波长
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9792865
A. Reddy, V. Anand, V. Podlipnov, S. Khonina, S. Juodkazis
{"title":"Simultaneous Detection of Modal Composition and Wavelength of OAM Fields Using a Hexagonal Vortex Filter","authors":"A. Reddy, V. Anand, V. Podlipnov, S. Khonina, S. Juodkazis","doi":"10.1109/piers55526.2022.9792865","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792865","url":null,"abstract":"The present study investigated the possibilities of transmitting information using different wavelengths (Near-IR) and different orbital angular momentum (OAM) modes simultaneously and applying modal decomposition using a passive hexagonal vortex filter (HVF) fabricated using a lithography procedure. The HVF was designed by a modulo-$2 pi$ phase addition of helical phases with three different orders (1, 2, and 3) with unique linear-phase functions in a hexagonal formation (0, $pi /4$ and $-pi /4)$. When a light field composed of multiple OAM modes is incident on the HVF, they are spatially mapped to unique lateral locations in the detector plane. Any change in OAM mode will result in a variation in the intensity distribution at the different locations but no change in the lateral mapping locations. However, when there is a change in wavelength, the linear phase varies and maps the modes at different lateral locations from the center of the detector. In this way, it is possible to measure the modal composition of the light field and its wavelength simultaneously and independently. We believe that the proposed approach will introduce a new and efficient dimension — wavelength, for free-space optical communication (FSOC) applications resulting in enhancement of information bandwidth.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125639704","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
Application of Two-dimensional Photonic-crystal Array for Optical Switches 二维光子晶体阵列在光开关中的应用
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9792760
G. Dong
{"title":"Application of Two-dimensional Photonic-crystal Array for Optical Switches","authors":"G. Dong","doi":"10.1109/piers55526.2022.9792760","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792760","url":null,"abstract":"We have proposed an effective scheme of an optical switch based on the combination of two modified photonic crystal (PhC) arrays. Stretched fundamental oscillations were simultaneously excited at the frequencies near their band edges, inducing the coupler-like behaviors. The technology of multimode interferences was applied in the periodic couplers of low effective indexes for switching “ON” and “OFF” by proper phase modulation. The characteristics of ideal 3db splitting, high extinction ratio, high transfer efficiency, and tunable operating frequency make this system particularly appropriate for optical switches, combiners, splitters, or multiplexers. This technology provides a practical solution for beam steering in large-scale integrated optical circuits.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127937074","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
MEO-SAR in-orbit Elevation Antenna Pattern Determination Using Nano Calibration Satellite 基于纳米定标卫星的MEO-SAR在轨仰角天线方向图确定
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/PIERS55526.2022.9793058
Tian Qiu, Jun Hong, Yu Wang, Kaichu Xing, Shaoyan Du, Yang Qi
{"title":"MEO-SAR in-orbit Elevation Antenna Pattern Determination Using Nano Calibration Satellite","authors":"Tian Qiu, Jun Hong, Yu Wang, Kaichu Xing, Shaoyan Du, Yang Qi","doi":"10.1109/PIERS55526.2022.9793058","DOIUrl":"https://doi.org/10.1109/PIERS55526.2022.9793058","url":null,"abstract":"Medium-Earth-Orbit synthetic aperture radar (MEO-SAR) is a spaceborne SAR running at orbit altitudes above Low-Earth-Orbit SAR (LEO-SAR) around 2000 km and below the geosynchronous orbit SAR (GEO-SAR) near 35786 km. The MEO-SAR is used to cover wide swaths, which is 4-5 times larger than LEO-SAR. Therefore, the current method based on tropical rain forest (ground-based method) can hardly meet the requirement of wide swath to determine the MEO-SAR antenna elevation pattern. In this paper, a new approach based on a low-cost Nano calibration satellite mounted with a receiver (space-based method) is proposed. Through appropriate orbit elements selection strategy, the Nano calibration satellite can fly across the entire SAR swath, and the receiver that mounted on the Nano calibration satellite will record the MEO-SAR elevation antenna pattern in the same time. Simulation work is performed with STK software, which verifies the feasibility of the proposed space-based method and the increased frequency of antenna pattern in-orbit determination compared to the ground-based method.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115825556","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
GEO SAR Antenna Three-dimensional Pointing Error Calibration Method Based on Ground Receiver 基于地面接收机的GEO SAR天线三维指向误差标定方法
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9792704
Kaichu Xing, Jun Hong, Yu Wang, Tian Qiu, Shaoyan Du
{"title":"GEO SAR Antenna Three-dimensional Pointing Error Calibration Method Based on Ground Receiver","authors":"Kaichu Xing, Jun Hong, Yu Wang, Tian Qiu, Shaoyan Du","doi":"10.1109/piers55526.2022.9792704","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792704","url":null,"abstract":"Antenna pointing error has more serious influence on radiometric calibration of SAR. SAR antenna pointing is two-dimensional, including antenna pointing in range and azimuth, and amazon rainforest and ground receiver are utilized to complete antenna pointing calibration respectively. However, the antenna pointing calibration methods of LEO SAR cannot be applied to GEO SAR, and GEO SAR needs to complete systematic error calibration during the antenna pointing calibration process. In this paper, an antenna pointing calibration method for three-dimensional systematic error of GEO SAR is proposed. The three-dimensional systematic error can be calibrated by using ground receiver to receive the beacon beams transmitted by the GEO SAR.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"1108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132340898","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
WR15 Six-port Interferometric Set-up for Millimeter-wave Characterization for Harsh Environments 恶劣环境下毫米波特性的WR15六端口干涉装置
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9792652
N. Alsaleh, D. Pomorski, M. Sebbache, C. Lenoir, K. Haddadi
{"title":"WR15 Six-port Interferometric Set-up for Millimeter-wave Characterization for Harsh Environments","authors":"N. Alsaleh, D. Pomorski, M. Sebbache, C. Lenoir, K. Haddadi","doi":"10.1109/piers55526.2022.9792652","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792652","url":null,"abstract":"Continuous wave (CW) millimeter-wave radars have gained the interest from industry for accurate short distance measurement. In particular, six-port radar (SPR) architecture presents advantages such as high resolution combined with low-power consumption and low-cost implementation. A WR15 waveguide six-port interferometer is designed and realized for accurate phase-shift measurement in the millimeter-wave regime for harsh environment conditions. This latter is combined with dedicated calibration algorithms to provide measurements performance in terms of sensitivity and accuracy. Experimental results are exemplary shown in this paper with mean phase-shift error of 2.2 degrees at the test frequency 60 GHz.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134016730","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
Thermally Tunable Polarization-insensitive Ultra-broadband Absorber in a Terahertz Metamaterial Sustained by the Coupled Toroidal Dipole Modes 由耦合环向偶极子模式维持的太赫兹超材料中的热可调谐偏振不敏感超宽带吸收体
2022 Photonics & Electromagnetics Research Symposium (PIERS) Pub Date : 2022-04-25 DOI: 10.1109/piers55526.2022.9793180
Hao Pan, Hai‐feng Zhang
{"title":"Thermally Tunable Polarization-insensitive Ultra-broadband Absorber in a Terahertz Metamaterial Sustained by the Coupled Toroidal Dipole Modes","authors":"Hao Pan, Hai‐feng Zhang","doi":"10.1109/piers55526.2022.9793180","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793180","url":null,"abstract":"The reported terahertz (THz) metamaterial absorber (MMA) sustained by coupled toroidal dipole modes enable a distinctive path to acquire the wide-band high absorption in the multipole optical system. The coupled toroidal dipole moments existing in the toroidal metallic structure can induce the destructive and constructive interference in far- and near-held to confine the electromagnetic field, thus impelling the MMA to attain the high absorption efficiency (over 0.9) of the normally incident waves with different polarization in the spectral of 2.38–21.13 THz at 340K, the relative absorption bandwidth (RABW) of 159.5%. In addition, owing to the characteristics of vanadium dioxide (VO2) regulated by environmental temperature, the tunability of absorption efficiency of such MMA, maximum up to 0.57 in the operating band, has been achieved through regulating the environmental temperature. The proposed method of enhancing the absorption resulting from the coupled toroidal dipole moments in a wide band can contribute to expanding the application field and the theoretical framework of multipole electrodynamics.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134561034","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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