{"title":"Time Domain Solutions of Transmission Line Crosstalk","authors":"Junyan Wang, T. Jiang, Ruifeng Sun, Yaxiu Sun","doi":"10.1109/ap-s/usnc-ursi47032.2022.9886937","DOIUrl":"https://doi.org/10.1109/ap-s/usnc-ursi47032.2022.9886937","url":null,"abstract":"This paper uses the Associate Hermite polynomial-finite-difference time-domain method (AH-FDTD) to analyze and calculate the transmission line (TL) crosstalk for the first time. The proposed method expands the transmission line equation using AH basis functions, uses Galekin's principle to eliminate the time variable, solves the implicit equation in the AH domain and performs inverse changes to obtain the solution of the equation. Compared with FDTD, this method separates the spatiotemporal variables, is not constrained by the Courant– Friedrich–Levy (CFL) condition, and has a higher calculation rate when there are many discrete segments of the transmission line. Simulation results show that the proposed method has much lower CPU time and better accuracy compared to FDTD and Alternating Direction Implicit (ADI) FDTD, which has obvious advantages.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114966170","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}
Mohamed Lamine Seddiki, Saif Eddine Hadji, M. Nedil
{"title":"A Triple-Band Antenna for Indoor 5G Applications","authors":"Mohamed Lamine Seddiki, Saif Eddine Hadji, M. Nedil","doi":"10.1109/AP-S/USNC-URSI47032.2022.9886638","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9886638","url":null,"abstract":"In this paper, a Triple-band antenna for 0.7/3.5/28 GHz is proposed and studied for 5G operations. The antenna consists of a folded monopole, C-shaped monopole and four patch arrays to generate three resonant modes for triple-band operation. The folded monopole which is fed by S-shaped strip generates a frequency band at 700 MHz. By couple-feeding of C-shaped monopole through and C-shape strip, a frequency band can be generated at 3.5 GHz. These two elements have an omnidirectional pattern, and they cover the sub-6 GHz band for 5G application. The four patch arrays have a resonance frequency of 28 GHz with a directional radiation pattern. The antenna is designed on a RO-5880 substrate with a total area of 135 mm x 50 mm. Plots of the return loss and radiation pattern have been presented and discussed to show the suitability of the design for 5G applications.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115165668","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":"Comparison of the Quadratic U and Inverse Quadratic U Sum-Difference Beampatterns","authors":"K. Buchanan, Sara Wheeland","doi":"10.1109/AP-S/USNC-URSI47032.2022.9887273","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9887273","url":null,"abstract":"This work examines and compares the radiative behavior of the quadratic U and vertically-inverted quadratic U distribution, both unique convex quadratic functions for the application of distributed antenna arrays. The comparison of the two analogous distributions demonstrated that the beamwidth of the random array relies on how the element population is either clustered or dispersed. Furthermore, this behavior occurs for both characteristic modal solutions in which element radiators are used independently to deliver both sum and difference beams. The quadratic U distribution raises sidelobe levels, and its inverse lowers sidelobe levels. By the same token this applies to a tapered aperture distribution where energy is seen to be removed by the mainbeam, increasing sidelobe levels or oppositely lowering sidelobe levels, but increasing mainbeam width. Thus, a trade-off applies to mainbeam width and its corresponding sidelobe levels. Simulated results for the quadratic U and inverted quadratic U with comparison on beamwidth and sidelobe levels conclude this paper.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115597457","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 A Wideband Low-Profile Cylindrical Conformal Array Antenna With Flexible Beam Scanning Capability","authors":"Min Wang, Yang Hu, Zhengchuan Chen","doi":"10.1109/AP-S/USNC-URSI47032.2022.9885815","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9885815","url":null,"abstract":"In this paper, a wideband low-profile cylindrical conformal array antenna with flexible beam scanning capability is reported. The design consists of the semi-cylindrical band-pass array antenna and the semi-cylindrical band-stop array antenna, which are connected by radius of R = 31.8 (1.06λo) mm. Based on the frequency selective surface, the profile of band-pass and band-stop element is less than 0.15λo, meanwhile, both have the characteristic of easy to conformal. The band-pass element comprises top and bottom layer of square metallic patch and a middle layer of metallic square-ring slot, and its transmission loss is less than 0.9 dB within 8.0-12.0 GHz. The band-stop element consists of top and bottom square metallic patch, middle metallic square-ring slot loaded with square tube, and its reflection loss is below 1.5 dB within 8.0-12.0 GHz. And a wide-angle of 360° beams scanning is realized, by rotating the spatial position of scanning conformal array. Finally, the simulated results show that the proposed low-profile array antenna have the characteristics of wideband, low-loss, wide-angle beam scanning.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115651245","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}
Á. F. Vaquero, E. Martinez‐de‐Rioja, M. Arrebola, E. Carrasco, J. Encinar, Safa Salman, M. Achour
{"title":"Reflectarray-based Intelligent Reflecting Surface to Improve mm-Wave 5G coverage in outdoor scenarios","authors":"Á. F. Vaquero, E. Martinez‐de‐Rioja, M. Arrebola, E. Carrasco, J. Encinar, Safa Salman, M. Achour","doi":"10.1109/AP-S/USNC-URSI47032.2022.9886349","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9886349","url":null,"abstract":"This work presents the use of a reflectarray panel as an efficient and low-cost solution to improve millimeter-wave coverage in 5G scenarios. A dual-polarized shaped-beam is designed to radiate a flat-top beam to cover a blind zone without coverage. The design is carried out using a phase-only synthesis considering the beam specifications for the outdoor scenario. Then, a single-layer reflectarray element is used to perform a design at 27.7 GHz. This element provides an angularly-stable phase response at the operational frequency with an independent phase control in each linear polarization. The reflectarray panel shows a stable gain and a low both side-lobe level and cross-polarization within 1 GHz bandwidth.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"290 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123107234","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":"Efficient Near-Field Meta-Steering Systems for Connectivity-On-The-Move Applications using Hybrid Metasurfaces","authors":"Khushboo Singh, M. Afzal, K. Esselle","doi":"10.1109/AP-S/USNC-URSI47032.2022.9886324","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9886324","url":null,"abstract":"In this work we provide an elaborate discussion on Near-Field Meta-Steering systems with hybrid metasurfaces. The steering efficiency of the system is increased by using different types of highly transmitting cells in the design of metasurfaces.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116713791","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":"Low-Frequency-Stabilized Electric Field Integral Equation on Topologically Non-Trivial Geometries for Arbitrary Excitations","authors":"B. Hofmann, T. Eibert, F. Andriulli, S. Adrian","doi":"10.1109/AP-S/USNC-URSI47032.2022.9886833","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9886833","url":null,"abstract":"The low-frequency preconditioned electric field integral equation (EFIE) based on quasi-Helmholtz decompositions is widely used to determine the radiated or scattered field by a given structure over a wide frequency range. However, if the excitation source is not a plane wave but, for instance, a line current, the standard preconditioners cannot recover all current components required to accurately obtain the fields. In this work, we propose an adaptive frequency normalization scheme of the discretized system that overcomes this problem irrespective of the specific excitation and irrespective of the underlying topology of the structure. To this end, the appropriate scaling factors are derived solely based on the norms of the right-hand side (RHS) components. Numerical results demonstrate the importance of our approach to obtain accurate results.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116926129","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}
R. Hussain, A. S. Rao, A. Aziz, M. U. Khan, S. S. Iqbal, M. Abou-Khousa, M. Sharawi
{"title":"Miniaturized Slot MIMO Antenna with Pattern Diversity for CubeSat Applications","authors":"R. Hussain, A. S. Rao, A. Aziz, M. U. Khan, S. S. Iqbal, M. Abou-Khousa, M. Sharawi","doi":"10.1109/AP-S/USNC-URSI47032.2022.9886604","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9886604","url":null,"abstract":"This work presents a highly miniaturized folded slot-based multiple-input-multiple-output (MIMO) antenna design for Cube Satellites (CubeSats) applications at UHF band with pattern diversity. A novel combination of meandered slot with folded structure and reactively slot loading with a discrete capacitor is used to achieve miniaturization. The antenna can operate over a wide-band from 430 to 510 MHz with pattern diversity over the entire band of operation. The overall board dimensions of the proposed antenna design used are 100×100 mm2. The proposed antenna design is highly suitable for small satellite applications, especially CubeSats.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116993279","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}
Felipe P. Mosquera, J. Rodriguez-Ferreira, Efren Acevedo, Oscar Restrepo, G. Chaparro
{"title":"100-200 MHz sdr-based radio telescope focused on the cosmological study of the Epoch of Reionization","authors":"Felipe P. Mosquera, J. Rodriguez-Ferreira, Efren Acevedo, Oscar Restrepo, G. Chaparro","doi":"10.1109/AP-S/USNC-URSI47032.2022.9886318","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9886318","url":null,"abstract":"Radio astronomy as an observational technique used in Astronomy allows experimental validation of theoretical models based on the study of electromagnetic cosmic waves. Technically speaking, uses dedicated instrumentation (radio telescopes) to acquire such signals. The study, base on the emission of 21-cm of neutral hydrogen at frequencies between 100 and 200 MHz, permits to cover a scientific case of open study called Epoch of Reionization (EoR) in which we seek to compare physics models with experimental measurements. This paper presents simulations and measurements of the sub-systems of a 100-200 MHz radiotelescope to establish the feseability to use Software Defined Radio (SDR) technology devices as receptors for low frequency radio telescopes.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116998610","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":"Systematic Design of Metasurface Angular Filters","authors":"A. Shaham, A. Epstein","doi":"10.1109/AP-S/USNC-URSI47032.2022.9886240","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9886240","url":null,"abstract":"We present a systematic methodology for synthesizing metasurface (MS) angular filters, which are beneficial for improving antenna radiation patterns: by deriving a convenient rational-function form for the reflection coefficient, we facilitate efficient and flexible design of such devices. We validate our framework via full-wave simulations by devising all-pass angular filters with tunable phase featuring rigorously designed physical MS inclusions. Our results pave the path towards complete control over the angular response of MSs, from theory to practice.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117224231","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}