2022 Photonics & Electromagnetics Research Symposium (PIERS)最新文献

{"title":"Radio Frequency Fingerprint Feature Extraction Based on I/Q Data Distribution Features","authors":"P. Shao, Zhenjia Chen","doi":"10.1109/piers55526.2022.9792936","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792936","url":null,"abstract":"With the development of cognitive radio, more and more radio frequency devices can dynamically switch radio frequency parameters. The reliability of the traditional method of marking the radio signal source in the communication band is greatly reduced. This paper proposes a radio frequency fingerprint feature extraction method based on the accumulated distance of I/Q data components. The RF raw I/Q sample data is collected through the distributed electromagnetic spectrum detection network. The cumulative I/Q distance is extracted from the I/Q sample data collected by multiple detection nodes. The weight distribution of the I/Q components is calculated. Based on I/Q sample data estimation cumulative I/Q distance and reception signal strength parameters, the received signal strength (RSS)-I/Q distance characteristic curve and the corresponding dataset are constructed. The radio frequency fingerprint characteristic curve of the target radio device is established. The optimized Sigmod mathematical model is used as a target function. The RSS-I/Q distance data is set as a sample. The normalized dataset is fitted according to the target function. The parameter values of the optimized sigmod mathematical model are obtained by estimating the fitted curve. The estimated value is taken as the eigenvalue matrix, which is the radio frequency fingerprint characteristic parameter of the target radio equipment. The RF fingerprint feature extraction method proposed in this paper can comprehensively analyze the subtle features of radio equipment from the perspective of signal source. The experiments show that the RF fingerprint feature parameters extracted from the same signal source in different frequency bands, different environments (cement ground, asphalt road, grass, riverside, indoor, etc.), and different temperature and humidity parameters are invariant within a certain error range. The radio frequency fingerprint feature parameters extracted in different signal sources have good distinction in the same frequency band, the same environment, and the same temperature and humidity.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"20 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":"126703508","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}

{"title":"On-chip Photonic Crystal Cavity Integrated with Thermal Graphene Source","authors":"A. Kuzin, I.A. Elmanov, A. Elmanová, P. An, V. Kovalyuk, G. Goltsman","doi":"10.1109/piers55526.2022.9793125","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793125","url":null,"abstract":"Photonic crystal cavity based optical filter for integration of graphene wide band thermal optical source with nanophotonic circuits was studied. Parameters of the filter were optimized to obtain transmission maximum close to 1550 nm wavelength with a rather narrow bandwidth and high transmittance value.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"17 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":"126838840","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}

{"title":"Ultra-miniaturized Narrow-band Metamaterial Absorber for L-band","authors":"Biao Chen, Shining Sun, Yutong Zhao, Bian Wu","doi":"10.1109/piers55526.2022.9792683","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792683","url":null,"abstract":"An ultra-miniaturized narrow-band metamaterial absorber for L-band is presented in this paper. The proposed design operates at 1.21 GHz with reflective coefficient of -22.3 dB. The unit cell is miniaturized to $0.02 lambda_{0}$, where $lambda_{0}$ is the free-space wavelength at center operating frequency. The miniaturization scheme is by using meander-line and plated vias in absorber. Several parts of the metal ground are dug out to avoid connecting with vias. The structure is polarization insensitive as there are plated vias on two opposite sides only. On the upper surface of the medium, meander-lines extend from the sides with vias toward the center of the cell, and the meander-lines are connected by two short vias and a strip in the medium. To explain the mechanism of the proposed absorber, we present an analysis of the current and electric field distribution at the operating frequency. Further, the unit cell is also simulated under various polarization angles $(varphi)$ and incident angles $(theta)$. The results show that the proposed absorber exhibits a good oblique incident angular stability of up to 50 degree, as well as a polarization insensitivity of up to 40 degree. The fractional bandwidth is 1.65% centered at 1.21GHz. The high absorptivity for a narrow-band makes the proposed absorber a useful candidate to defense against strong radiation attacks and electromagnetic interface in various electronic circuits in satellite and radar applications. The ultra-miniaturized elements and 2.5D design make it stable at large incident angles.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"40 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":"127257161","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}

{"title":"Wideband Direction-of-Arrival Estimation and Phase Noise Compensation","authors":"Rui Lu, Jiali Kang, Xiaoming Chen","doi":"10.1109/piers55526.2022.9792846","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792846","url":null,"abstract":"This paper proposes an estimation method of wideband direction-of arrival (DoA) by using multiple snapshots in the presence of phase noise (PN). PNs generated by different oscillators configured for individual radio frequency (RF) chains bring significant difficulties to the DoA estimation, especially at millimeter-wave frequencies. In order to solve the problem of DoA estimation for wideband signals in the presence of PNs, we divide each snapshot into several segments and use a piece-wise linear model to obtain the discrete Fourier transform (DFT) of the signals received by the antenna array to avoid complex convolution. Then we estimate the DoA and PN parameters iteratively by employing the modified Newton method. To evaluate the performance of our proposed method, we compare the root mean square error (RMSE) of the DoA and PNs estimates with their corresponding true values, respectively. Simulation results demonstrate the effectiveness of our proposed method in the joint DoA estimation and PN compensation.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"80 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":"123208172","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}

{"title":"Liquid Metal Antenna: Application and Fabrication","authors":"Z. F. Liu, Y. Y. Zhu, M. Ma, M. Wang, J. Dong","doi":"10.1109/piers55526.2022.9792705","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792705","url":null,"abstract":"This article introduces the design and application of liquid metal antennas. Compared with traditional metal, liquid metal has shown more advantages in terms of fluidity and continuity, which brings new options to the processing technology of conformal antennas, such as 3D printing technology, injection of flexible/rigid media substrates, and the surface of the dielectric material is sprayed with conductive fluid, etc. In addition, compared with traditional loaded diodes or high-frequency switches, liquid metal antennas use micro-pumps or electrochemical control capillary action, which can achieve continuous adjustment of the antenna frequency while satisfying a wider linear adjustment range of the antenna. This article discusses the electrochemical characteristics and reconfigurable technology of liquid metal, new processing methods and applications of liquid metal antennas.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"251 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":"134595194","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}

{"title":"Optically and Chemically Controllable Light Flow in Topological Plasmonic Waveguides Based on Graphene Metasurfaces","authors":"Y. Wang, J. You, Z. Lan, N. Panoiu","doi":"10.1109/piers55526.2022.9793027","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793027","url":null,"abstract":"In this work, topologically-protected plasmon transport is demonstrated in graphene-based plasmonic crystal waveguides, the main ideas being subsequently applied to optically and chemically controllable nanodevices. In two configurations of topological graphene metasurfaces created by breaking their inversion symmetry, symmetry-protected Dirac cones associated to the underlying metasurfaces are gapped out, which leads to the formation of topological valley modes inside the nontrivial bandgap. The propagation of the corresponding topological modes shows unidirectional characteristics in both cases. Based on the proposed plasmonic topological waveguides, an active optical nanoswitch and a gas molecular sensor are designed by optically and chemically tuning the frequency dispersion of graphene metasurfaces via Kerr effect and gas molecular absorption, respectively. Specifically, the variation of the frequency dispersion of graphene can switch the topological mode into the region of leaky bulk modes, resulting in a dramatic variation of the plasmon transmission. Our work may contribute to the development of new ultracompact and ultrafast active photonic nanodevices based on graphene.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"30 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":"133806801","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}

{"title":"Metamaterial Aperture for Frequency-diverse Dual-mode OAM Beams","authors":"Ningning Zhou, Mengran Zhao, Shitao Zhu","doi":"10.1109/piers55526.2022.9793022","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793022","url":null,"abstract":"In this paper, a metamaterial aperture for generating electromagnetic vortex waves with frequency-diverse dual-mode orbital angular momentum (OAM) in the X-band (8 GHz–12 GHz) is designed. The electromagnetic vortex wave carrying OAM is also called the OAM beam. OAM beams with different modes can be generated by the proposed metamaterial aperture at different working frequencies Firstly, three kinds of metamaterial units including the rectangular patch unit, the jerusalem cross unit and the swastika unit are designed, respectively. Through optimization, the transmission phase of the unit group can cover 2π, which meets the requirements of generating OAM beams Secondly, the metamaterial aperture is divided into two annular regions and metamaterial units with certain transmission phases at corresponding frequencies are distributed at specific annular regions according to the phase distributions of OAM beams. In addition, the design method can be extended to generate frequency-diverse multi-mode OAM beams, which can be used to improve the resolution of radar imaging system. Finally, the metamaterial aperture is modeled and simulated in the Computer Simulation Technology (CST) software. 1-mode and 2-mode OAM beams are generated by the proposed metamaterial aperture at 8 GHz and 12 GHz respectively, which validates its feasibility of generating frequency-diverse dual-mode OAM beams.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"123 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133685466","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}

{"title":"Design of Few-mode Erbium-doped Fiber Amplifiers with Tunable Differential Mode Gain","authors":"Yan Xu, Baojian Wu, Xinrui Jiang, Haomiao Guo","doi":"10.1109/piers55526.2022.9792839","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792839","url":null,"abstract":"The paper focuses on the tunability of DMG for FM-EDFAs, which helps to realize the zero DMG or compensate for the mode-dependent loss of fiber links. An optimal method is proposed to design the EDFAs with tunable DMG by sweeping the EDF’s length and the forward-to backward pump power ratio. The relevant experiment is also performed for tunable DMG.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"08 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":"133561161","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}

{"title":"Transient Thermal Simulation of 3-D ICs with Integrated Microchannel Cooling Using Laguerre Polynomials","authors":"Jie Li, Minfeng Tang","doi":"10.1109/piers55526.2022.9793273","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9793273","url":null,"abstract":"In this paper, an unconditionally stable method for transient thermal simulation of 3-D ICs with integrated microchannel cooling is proposed. The method is based on marching-on-in-order scheme, and the calculation time does not increase as the number of time steps increases. Moreover, a data filtering method is applied to reduce the number of basis functions required, thereby further improving the computational efficiency. Numerical examples are presented to verify the accuracy and efficiency of the proposed method.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"44 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":"133760486","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}

{"title":"Electromagnetic-circuital-thermal Multiphysics Simulation of Microwave Amplifier","authors":"Z. Jia, Z. Xue, X.Y. Liu, H.H. Zhang","doi":"10.1109/piers55526.2022.9792751","DOIUrl":"https://doi.org/10.1109/piers55526.2022.9792751","url":null,"abstract":"An electromagnetic-circuital-thermal multiphysics simulation method is proposed for microwave circuits with active and nonlinear devices in this paper. The discontinuous Galerkin time-domain (DGTD) equation is established based on Maxwell equation, while thermal simulation is using finite-element time-domain (FETD) method, and the lumped circuit is described by the circuit equation. Electromagnetic-circuital coupling is realized by the current and voltage of the lumped port, while electromagnetic-thermal is achieved by loss power and conductivity. At last, the method is applied to analyze the microwave amplifier.","PeriodicalId":422383,"journal":{"name":"2022 Photonics & Electromagnetics Research Symposium (PIERS)","volume":"1 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":"130247145","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}