Pub Date : 2021-12-04DOI: 10.1109/APS/URSI47566.2021.9703824
G. Oliveri, M. Salucci, R. Lombardi, R. Flamini, C. Mazzucco, S. Verzura, A. Massa
The problem of synthesizing a slant +/-45 [deg] dual-polarization waveguide array with wide scan capabilities for 5G applications is addressed in this work. The exploitation of an advanced low-profile wide-angle impedance matching (WAIM) superstrate is considered to achieve such a goal, and an innovative system-by-design (SbD)-inspired strategy is customized to the solution of the arising synthesis problem. The results of an extensive full-wave numerical validation are presented to illustrate the effectiveness and performance of the resulting arrangement in terms of scan range, impedance and gain stability, and port isolation.
{"title":"Wide-angle Scanning Metasurface-Enhanced Array for Next-Generation Communications","authors":"G. Oliveri, M. Salucci, R. Lombardi, R. Flamini, C. Mazzucco, S. Verzura, A. Massa","doi":"10.1109/APS/URSI47566.2021.9703824","DOIUrl":"https://doi.org/10.1109/APS/URSI47566.2021.9703824","url":null,"abstract":"The problem of synthesizing a slant +/-45 [deg] dual-polarization waveguide array with wide scan capabilities for 5G applications is addressed in this work. The exploitation of an advanced low-profile wide-angle impedance matching (WAIM) superstrate is considered to achieve such a goal, and an innovative system-by-design (SbD)-inspired strategy is customized to the solution of the arising synthesis problem. The results of an extensive full-wave numerical validation are presented to illustrate the effectiveness and performance of the resulting arrangement in terms of scan range, impedance and gain stability, and port isolation.","PeriodicalId":6801,"journal":{"name":"2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI)","volume":"55 1","pages":"725-726"},"PeriodicalIF":0.0,"publicationDate":"2021-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91369221","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}
Pub Date : 2021-12-04DOI: 10.1109/APS/URSI47566.2021.9703792
Hailun Wang, Siyu Lin
Developing an accurate wideband vehicular channel model is a key issue for the transmission scheme and protocol design of vehicular communications. Although finite-state Markov chain (FSMC) has been extensively investigated, most of the literature about FSMC modeling only considered channel fading in the time domain or frequency domain. Only few FSMC channel models describing channel fading in both the time and frequency domains lack the support of measurement data. In this paper, we propose an FSMC model in both time and frequency domain for vehicular channels based on real measurements. We validate the accuracy of steady state probability (SSP) of the proposed model via real measurement data. And we also discuss the influence of different subband partitions and the size of the modeling region on multi-subband interval change probability (MICP). The conclusion of this paper can be used in future FSMC modeling for the non-stationary wideband channel.
{"title":"Finite-State Markov Modeling for the Non-stationary Wideband Vehicular Channels","authors":"Hailun Wang, Siyu Lin","doi":"10.1109/APS/URSI47566.2021.9703792","DOIUrl":"https://doi.org/10.1109/APS/URSI47566.2021.9703792","url":null,"abstract":"Developing an accurate wideband vehicular channel model is a key issue for the transmission scheme and protocol design of vehicular communications. Although finite-state Markov chain (FSMC) has been extensively investigated, most of the literature about FSMC modeling only considered channel fading in the time domain or frequency domain. Only few FSMC channel models describing channel fading in both the time and frequency domains lack the support of measurement data. In this paper, we propose an FSMC model in both time and frequency domain for vehicular channels based on real measurements. We validate the accuracy of steady state probability (SSP) of the proposed model via real measurement data. And we also discuss the influence of different subband partitions and the size of the modeling region on multi-subband interval change probability (MICP). The conclusion of this paper can be used in future FSMC modeling for the non-stationary wideband channel.","PeriodicalId":6801,"journal":{"name":"2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI)","volume":"11 1","pages":"663-664"},"PeriodicalIF":0.0,"publicationDate":"2021-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89661053","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}
Pub Date : 2021-12-04DOI: 10.1109/APS/URSI47566.2021.9704576
Ruisi Ge, R. Striker, B. Braaten
In this paper, a 3D-printed conformal metasurface was used to change the phase of the radiated field from a single microstrip patch antenna. The metasurface had 25 complementary split ring resonators (CSRR) and was placed in the radiating far-field of the patch antenna. The conformal metasurface was printed with flexible NinjaFlex (substrate) and Electrifi (conductors) filaments, and the phase shift of the radiated field was achieved by changing the curvature of the conformal metasurface. The proposed system was simulated in HFSS. Furthermore, a prototype was measured, and the results validated the simulation results. The radiation pattern was shown to shift by up to 20 degrees in response to the curved metasurface. This proposed approach could eventually be used to achieve beam steering by combining a conventional patch antenna and 3D-printed metasurfaces.
{"title":"On Changing the Phase of the Radiated Field from a Microstrip Patch Antenna Using a 3D-printed Conformal Metasurface","authors":"Ruisi Ge, R. Striker, B. Braaten","doi":"10.1109/APS/URSI47566.2021.9704576","DOIUrl":"https://doi.org/10.1109/APS/URSI47566.2021.9704576","url":null,"abstract":"In this paper, a 3D-printed conformal metasurface was used to change the phase of the radiated field from a single microstrip patch antenna. The metasurface had 25 complementary split ring resonators (CSRR) and was placed in the radiating far-field of the patch antenna. The conformal metasurface was printed with flexible NinjaFlex (substrate) and Electrifi (conductors) filaments, and the phase shift of the radiated field was achieved by changing the curvature of the conformal metasurface. The proposed system was simulated in HFSS. Furthermore, a prototype was measured, and the results validated the simulation results. The radiation pattern was shown to shift by up to 20 degrees in response to the curved metasurface. This proposed approach could eventually be used to achieve beam steering by combining a conventional patch antenna and 3D-printed metasurfaces.","PeriodicalId":6801,"journal":{"name":"2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI)","volume":"33 1","pages":"1441-1442"},"PeriodicalIF":0.0,"publicationDate":"2021-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89706198","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}
Pub Date : 2021-12-04DOI: 10.1109/APS/URSI47566.2021.9704372
Dojana Salama, J. Lee, H. Schuman
A tunable non-Foster matching network is teamed with a wideband resistively loaded dipole antenna to improve signal reception especially at the low end of the operating band where the resistive loading becomes ineffective. Network stability is examined and shown to be manageable. A novel variant to the matching network enables easy tuning for optimized reception across the wide band.
{"title":"Utilizing a Tunable Non-Foster Circuit for Wideband Matching of a Resistively Loaded Dipole Antenna","authors":"Dojana Salama, J. Lee, H. Schuman","doi":"10.1109/APS/URSI47566.2021.9704372","DOIUrl":"https://doi.org/10.1109/APS/URSI47566.2021.9704372","url":null,"abstract":"A tunable non-Foster matching network is teamed with a wideband resistively loaded dipole antenna to improve signal reception especially at the low end of the operating band where the resistive loading becomes ineffective. Network stability is examined and shown to be manageable. A novel variant to the matching network enables easy tuning for optimized reception across the wide band.","PeriodicalId":6801,"journal":{"name":"2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI)","volume":"844 1","pages":"527-528"},"PeriodicalIF":0.0,"publicationDate":"2021-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76968121","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}
Pub Date : 2021-12-04DOI: 10.1109/aps/ursi47566.2021.9704221
{"title":"[Copyright notice]","authors":"","doi":"10.1109/aps/ursi47566.2021.9704221","DOIUrl":"https://doi.org/10.1109/aps/ursi47566.2021.9704221","url":null,"abstract":"","PeriodicalId":6801,"journal":{"name":"2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI)","volume":"109 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78374261","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}
Pub Date : 2021-12-04DOI: 10.1109/APS/URSI47566.2021.9704327
He Li, Y. Li, T. Cui
We propose a reconfigurable transmission unit cell with independent and continuous modulations of amplitude and phase in C band. This structure mainly contains four parts of receiving and transmitting antennas, programmable attenuator with PIN diodes, and programmable phase shifter with varactor diodes. By changing the voltage bias of PIN diodes and varactor diodes, the transmission amplitude and phase can be varied separately, and the simulation results show good independent transmission properties. For the advantages of low profile, low cost and easy configuration, this design have a great potential in advanced radar and communication systems.
{"title":"Design of Reconfigurable Transmission Unit Cell with Independent and Continuous Manipulations of Amplitude and Phase","authors":"He Li, Y. Li, T. Cui","doi":"10.1109/APS/URSI47566.2021.9704327","DOIUrl":"https://doi.org/10.1109/APS/URSI47566.2021.9704327","url":null,"abstract":"We propose a reconfigurable transmission unit cell with independent and continuous modulations of amplitude and phase in C band. This structure mainly contains four parts of receiving and transmitting antennas, programmable attenuator with PIN diodes, and programmable phase shifter with varactor diodes. By changing the voltage bias of PIN diodes and varactor diodes, the transmission amplitude and phase can be varied separately, and the simulation results show good independent transmission properties. For the advantages of low profile, low cost and easy configuration, this design have a great potential in advanced radar and communication systems.","PeriodicalId":6801,"journal":{"name":"2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI)","volume":"1 1","pages":"1227-1228"},"PeriodicalIF":0.0,"publicationDate":"2021-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75374457","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}
Pub Date : 2021-12-04DOI: 10.1109/APS/URSI47566.2021.9704241
Zhixia Xu, D. Sievenpiper
We propose a parallel-plate metasurface waveguide, where duality symmetry is realized by spatially arranging two kinds of metasurfaces with opposite equivalent reactance, inductive and capacitive. Period patch and grid arrays are designed to achieve different artificial impedance surfaces. Equivalent impedance boundary conditions are extracted based on simulated dispersion curves of unit cells. Simplified uniform waveguide models based on impedance boundaries are established to further investigate robust transport of interface waves along various routes. Due to the protection from duality symmetry, the interface waves are tightly bounded at the center of the waveguide. The proposed waveguide may pave an important research direction in wireless components design.
{"title":"Interface Waves in Parallel-plate Metasurface Waveguides with Duality Symmetry","authors":"Zhixia Xu, D. Sievenpiper","doi":"10.1109/APS/URSI47566.2021.9704241","DOIUrl":"https://doi.org/10.1109/APS/URSI47566.2021.9704241","url":null,"abstract":"We propose a parallel-plate metasurface waveguide, where duality symmetry is realized by spatially arranging two kinds of metasurfaces with opposite equivalent reactance, inductive and capacitive. Period patch and grid arrays are designed to achieve different artificial impedance surfaces. Equivalent impedance boundary conditions are extracted based on simulated dispersion curves of unit cells. Simplified uniform waveguide models based on impedance boundaries are established to further investigate robust transport of interface waves along various routes. Due to the protection from duality symmetry, the interface waves are tightly bounded at the center of the waveguide. The proposed waveguide may pave an important research direction in wireless components design.","PeriodicalId":6801,"journal":{"name":"2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI)","volume":"6 1","pages":"1978-1979"},"PeriodicalIF":0.0,"publicationDate":"2021-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75452039","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}
Pub Date : 2021-12-04DOI: 10.1109/APS/URSI47566.2021.9704075
Ting Shi, Xuesong Yuan, M. Tang
In this paper, a low-profile, broadband metamaterial absorber with the advantage of near-omnidirectional absorption for TM polarization, is developed based on characteristic mode analysis (CMA). By utilizing CMA to synthesize omnidirectional radiation pattern of the absorber's unit-atom under full PEC condition, the developed absorber can then convert the omnidirectional radiation pattern into near-omnidirectional absorption pattern based on dissipation tailoring. The developed absorber is three-dimensional, and its top layer is patch-type with broadband and angle-stable absorption within small incident angles. And the middle part is a lossy pillar to provide broadband absorption at large incident angles. The simulated results demonstrate that, in the frequency range of 1.2-3.0 GHz, corresponding to the FBW of 85.7%, the absorption of TE-polarized wave is over 90 % when the incident angle is less than 40°. For TM polarization incident wave, the absorption is over 90% when the incident angle is less than 80°.
{"title":"A Near-Omnidirectional, Low-Profile, Broadband, Metamaterial Absorber Based on Characteristic Mode Analysis","authors":"Ting Shi, Xuesong Yuan, M. Tang","doi":"10.1109/APS/URSI47566.2021.9704075","DOIUrl":"https://doi.org/10.1109/APS/URSI47566.2021.9704075","url":null,"abstract":"In this paper, a low-profile, broadband metamaterial absorber with the advantage of near-omnidirectional absorption for TM polarization, is developed based on characteristic mode analysis (CMA). By utilizing CMA to synthesize omnidirectional radiation pattern of the absorber's unit-atom under full PEC condition, the developed absorber can then convert the omnidirectional radiation pattern into near-omnidirectional absorption pattern based on dissipation tailoring. The developed absorber is three-dimensional, and its top layer is patch-type with broadband and angle-stable absorption within small incident angles. And the middle part is a lossy pillar to provide broadband absorption at large incident angles. The simulated results demonstrate that, in the frequency range of 1.2-3.0 GHz, corresponding to the FBW of 85.7%, the absorption of TE-polarized wave is over 90 % when the incident angle is less than 40°. For TM polarization incident wave, the absorption is over 90% when the incident angle is less than 80°.","PeriodicalId":6801,"journal":{"name":"2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI)","volume":"74 1","pages":"2024-2025"},"PeriodicalIF":0.0,"publicationDate":"2021-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77847979","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}
Pub Date : 2021-12-04DOI: 10.1109/APS/URSI47566.2021.9703771
Shucheng Huang, Li Xu, Bingqi Liu, Zhonghai Yang, Bin Li
In this paper, we designed a unified parallel DG framework. Based on the characteristics of DG discretization, we built a preprocessing part in the framework. Then designed different kernel functions to match different numerical problems, such as Maxwell's equation and Euler's equation. A speed-up of 160 has been achieved over an equivalent CPU code. Compared with CPU code, the computing efficiency has been greatly improved.
{"title":"Unified GPU Parallel Framework Based on Discontinuous Galerkin Method","authors":"Shucheng Huang, Li Xu, Bingqi Liu, Zhonghai Yang, Bin Li","doi":"10.1109/APS/URSI47566.2021.9703771","DOIUrl":"https://doi.org/10.1109/APS/URSI47566.2021.9703771","url":null,"abstract":"In this paper, we designed a unified parallel DG framework. Based on the characteristics of DG discretization, we built a preprocessing part in the framework. Then designed different kernel functions to match different numerical problems, such as Maxwell's equation and Euler's equation. A speed-up of 160 has been achieved over an equivalent CPU code. Compared with CPU code, the computing efficiency has been greatly improved.","PeriodicalId":6801,"journal":{"name":"2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI)","volume":"27 1","pages":"1891-1892"},"PeriodicalIF":0.0,"publicationDate":"2021-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77857506","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}
Pub Date : 2021-12-04DOI: 10.1109/APS/URSI47566.2021.9704283
C. Baer
This contribution handles a novel, broadband, and non-periodical mmWave filter design. Basing on fundamental considerations for dielectric waveguides, reflectionless high- and low-pass filter designs are discussed. Theoretical and practical design steps, as well as three different exemplary filter structures are presented. The corresponding transfer functions are investigated in simulations and measurements and prove the discussed filter theory.
{"title":"Broadband mmWave Filters using Dielectric Waveguide Bends","authors":"C. Baer","doi":"10.1109/APS/URSI47566.2021.9704283","DOIUrl":"https://doi.org/10.1109/APS/URSI47566.2021.9704283","url":null,"abstract":"This contribution handles a novel, broadband, and non-periodical mmWave filter design. Basing on fundamental considerations for dielectric waveguides, reflectionless high- and low-pass filter designs are discussed. Theoretical and practical design steps, as well as three different exemplary filter structures are presented. The corresponding transfer functions are investigated in simulations and measurements and prove the discussed filter theory.","PeriodicalId":6801,"journal":{"name":"2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI)","volume":"5 1","pages":"747-748"},"PeriodicalIF":0.0,"publicationDate":"2021-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77900034","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}
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