Pub Date : 2022-07-10DOI: 10.1109/AP-S/USNC-URSI47032.2022.9886527
F. Vico, M. Ferrando-Bataller, E. Antonino-Daviu, M. Cabedo-Fabrés
The method of boundary integral equation is commonly used in computational electromagnetics (CEM). Both Galerkin and Nyström are two possible schemes to discretize the resulting boundary integral equation. In both cases one can use low order basis functions or high order basis functions. In this paper we show a simple way of estimating the error given the solution obtained. The error is estimated by using a spectral analysis of the induced sources on the surface. This method can be used in case of highly adaptive discretization of the geometry.
{"title":"An error control high order Galerking method for integral equations in electromagnetism","authors":"F. Vico, M. Ferrando-Bataller, E. Antonino-Daviu, M. Cabedo-Fabrés","doi":"10.1109/AP-S/USNC-URSI47032.2022.9886527","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9886527","url":null,"abstract":"The method of boundary integral equation is commonly used in computational electromagnetics (CEM). Both Galerkin and Nyström are two possible schemes to discretize the resulting boundary integral equation. In both cases one can use low order basis functions or high order basis functions. In this paper we show a simple way of estimating the error given the solution obtained. The error is estimated by using a spectral analysis of the induced sources on the surface. This method can be used in case of highly adaptive discretization of the geometry.","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":"128463707","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 : 2022-07-10DOI: 10.1109/AP-S/USNC-URSI47032.2022.9887281
Omer F. Firat, Jing Wang, T. Weller
This paper presents a new fabrication method for metal-insulator-metal (MIM) capacitors. Micro-dispensing is used to realize the additively manufactured (AM) passive devices on a Kapton tape. These 3D printed capacitors are fabricated using Dupont CB028 to form the conductive layers and Creative Materials 128-49 as the dielectric layer. A 0.55 mm2 capacitor is realized and shows a value of 7.12 pF with the self-resonance of 6 GHz and Q factor of 103. This capacitor could be embedded into large area RF and microwave systems.
{"title":"Additively Manufactured Metal-Insulator-Metal Capacitors using a High-K Dielectric Paste","authors":"Omer F. Firat, Jing Wang, T. Weller","doi":"10.1109/AP-S/USNC-URSI47032.2022.9887281","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9887281","url":null,"abstract":"This paper presents a new fabrication method for metal-insulator-metal (MIM) capacitors. Micro-dispensing is used to realize the additively manufactured (AM) passive devices on a Kapton tape. These 3D printed capacitors are fabricated using Dupont CB028 to form the conductive layers and Creative Materials 128-49 as the dielectric layer. A 0.55 mm2 capacitor is realized and shows a value of 7.12 pF with the self-resonance of 6 GHz and Q factor of 103. This capacitor could be embedded into large area RF and microwave systems.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"64 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":"128382083","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 : 2022-07-10DOI: 10.1109/AP-S/USNC-URSI47032.2022.9887258
Akash Biswas, C. Zekios, S. Georgakopoulos
In this work, we present a method that enables the ulta-fast design of phase shifting surfaces (PSS) for various antenna applications. Traditional design approaches utilize full-wave simulations that are extremely time-consuming and computationally expensive. Our approach uses the multiplication property of ABCD parameters of cascaded networks to design N-layer PSSs, which consist of M different variations of conductive patches. Following the proposed approach for designing an N-layer PSS, we only need to perform N × M full-wave simulations instead of NM simulations, which must be performed when the traditional approach is used. Our method’s accuracy is studied and validated; specifically, it exhibits a total percentage error of less than 6% for both amplitude and phase.
{"title":"An Ultra-Fast Method for Designing Phase Shifting Surfaces","authors":"Akash Biswas, C. Zekios, S. Georgakopoulos","doi":"10.1109/AP-S/USNC-URSI47032.2022.9887258","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9887258","url":null,"abstract":"In this work, we present a method that enables the ulta-fast design of phase shifting surfaces (PSS) for various antenna applications. Traditional design approaches utilize full-wave simulations that are extremely time-consuming and computationally expensive. Our approach uses the multiplication property of ABCD parameters of cascaded networks to design N-layer PSSs, which consist of M different variations of conductive patches. Following the proposed approach for designing an N-layer PSS, we only need to perform N × M full-wave simulations instead of NM simulations, which must be performed when the traditional approach is used. Our method’s accuracy is studied and validated; specifically, it exhibits a total percentage error of less than 6% for both amplitude and phase.","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":"129246110","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 : 2022-07-10DOI: 10.1109/AP-S/USNC-URSI47032.2022.9886631
T. Liao, L. Tsang, Shurun Tan
We apply the BBGF-MST (Broadband Green’s function-Multiple Scattering Theory) to calculate Band Structures and Band Field Solutions in periodic structures A feature of BBGF is that the lattice Green’s functions are broadband and are calculated rapidly for many frequencies for speedy calculation of the determinant of the KKR (Koringa-Kohn-Rostoker) equation. Using BBGF-MST, a low order matrix eigenvalue equation for the bands is derived. Previously, the method was applied to 2D problems. In this paper, we have extended the method to 3D problems. For the first two bands, the dimension of the matrix equation is only 9 by 9. Numerical results of the band diagrams are illustrated.
{"title":"Bands in 3D Periodic Structures with the Broadband Green’s Function-Multiple Scattering Theory","authors":"T. Liao, L. Tsang, Shurun Tan","doi":"10.1109/AP-S/USNC-URSI47032.2022.9886631","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9886631","url":null,"abstract":"We apply the BBGF-MST (Broadband Green’s function-Multiple Scattering Theory) to calculate Band Structures and Band Field Solutions in periodic structures A feature of BBGF is that the lattice Green’s functions are broadband and are calculated rapidly for many frequencies for speedy calculation of the determinant of the KKR (Koringa-Kohn-Rostoker) equation. Using BBGF-MST, a low order matrix eigenvalue equation for the bands is derived. Previously, the method was applied to 2D problems. In this paper, we have extended the method to 3D problems. For the first two bands, the dimension of the matrix equation is only 9 by 9. Numerical results of the band diagrams are illustrated.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"78 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":"124543490","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 : 2022-07-10DOI: 10.1109/AP-S/USNC-URSI47032.2022.9887038
J. Kulkarni
The design of two port multiple input multiple output (MIMO) decagon ring with dual inverted T-shaped radiators functioning in Wireless Fidelity (Wi-Fi) 6 applications for next generation futuristic wireless devices is designed and analyzed. The two antenna elements are constructed on a FR-4 substrate with size of 42.5×19.5mm2, thickness 0.8mm and excited using co-planar waveguide (CPW) fed technique to operate smoothly with frequency span of (5.88 - 7.57 GHz) fulfilling the bandwidth requirement of Wi-Fi-6 bands. In order to be the potential candidate for MIMO practical applications, the two CPW grounds are connected with each other along with an inverted-Psi shaped radiator embedded between two ground planes which also act as a decoupling structure to reduce the interference between antenna elements. Moreover, the proposed MIMO antenna generate bandwidth of 30.03% in Wi-Fi-6 frequency band at single resonating frequency of 6.7GHz, isolation >18dB, gain greater than 4dBi throughout the desired band. Finally, the MIMO parameters like envelope correlation coefficient (ECC) < 0.02 and diversity gain (DG) ~ 9.9dB are also achieved in Wi-Fi-6 operating bands.
{"title":"Design of Decagon Ring Two Port MIMO Antenna for Wireless Fidelity-6 Application in Next Generation Futuristic Wireless Devices","authors":"J. Kulkarni","doi":"10.1109/AP-S/USNC-URSI47032.2022.9887038","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9887038","url":null,"abstract":"The design of two port multiple input multiple output (MIMO) decagon ring with dual inverted T-shaped radiators functioning in Wireless Fidelity (Wi-Fi) 6 applications for next generation futuristic wireless devices is designed and analyzed. The two antenna elements are constructed on a FR-4 substrate with size of 42.5×19.5mm2, thickness 0.8mm and excited using co-planar waveguide (CPW) fed technique to operate smoothly with frequency span of (5.88 - 7.57 GHz) fulfilling the bandwidth requirement of Wi-Fi-6 bands. In order to be the potential candidate for MIMO practical applications, the two CPW grounds are connected with each other along with an inverted-Psi shaped radiator embedded between two ground planes which also act as a decoupling structure to reduce the interference between antenna elements. Moreover, the proposed MIMO antenna generate bandwidth of 30.03% in Wi-Fi-6 frequency band at single resonating frequency of 6.7GHz, isolation >18dB, gain greater than 4dBi throughout the desired band. Finally, the MIMO parameters like envelope correlation coefficient (ECC) < 0.02 and diversity gain (DG) ~ 9.9dB are also achieved in Wi-Fi-6 operating bands.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"50 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":"124548130","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 : 2022-07-10DOI: 10.1109/AP-S/USNC-URSI47032.2022.9887138
R. Jenkins, S. Campbell, P. Werner, D. Werner
Realizing state-of-the-art metasurfaces depends on meeting strict geometric tolerances due to their inherent sensitivity to structural variations. A design may have extremely good performance in simulation which is lost when undergoing fabrication. We present how a Deep Learning-augmented multiobjective optimization method can be used for designing metasurfaces which are robust to a common type of manufacturing defect, namely erosion and dilation.
{"title":"Robustness Optimization of Nanophotonic Devices Using Deep Learning","authors":"R. Jenkins, S. Campbell, P. Werner, D. Werner","doi":"10.1109/AP-S/USNC-URSI47032.2022.9887138","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9887138","url":null,"abstract":"Realizing state-of-the-art metasurfaces depends on meeting strict geometric tolerances due to their inherent sensitivity to structural variations. A design may have extremely good performance in simulation which is lost when undergoing fabrication. We present how a Deep Learning-augmented multiobjective optimization method can be used for designing metasurfaces which are robust to a common type of manufacturing defect, namely erosion and dilation.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"48 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":"124568822","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 : 2022-07-10DOI: 10.1109/AP-S/USNC-URSI47032.2022.9886044
G. Carrara, C. Zekios, S. Georgakopoulos
In this work, we present the design of a novel mm-wave leaky wave antenna (LWA), which operates at the TM11 high-order mode. While typical LWAs operate at their fundamental mode, e.g., TE10, our proposed TM11 high-order mode LWA takes advantage of its modal distribution, thereby coupling more energy to free-space through appropriately designed slots. Due to the latter, our TM11 mm-wave LWA achieves 1.47 3.24 dB more gain over a bandwidth of 5 GHz (from 35 GHz to−40 GHz) when it is compared to a traditional LWA of the same electrical dimensions that operates at the fundamental TE10-mode.
{"title":"A mm-Wave High-Order Mode Leaky Wave Antenna","authors":"G. Carrara, C. Zekios, S. Georgakopoulos","doi":"10.1109/AP-S/USNC-URSI47032.2022.9886044","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9886044","url":null,"abstract":"In this work, we present the design of a novel mm-wave leaky wave antenna (LWA), which operates at the TM11 high-order mode. While typical LWAs operate at their fundamental mode, e.g., TE10, our proposed TM11 high-order mode LWA takes advantage of its modal distribution, thereby coupling more energy to free-space through appropriately designed slots. Due to the latter, our TM11 mm-wave LWA achieves 1.47 3.24 dB more gain over a bandwidth of 5 GHz (from 35 GHz to−40 GHz) when it is compared to a traditional LWA of the same electrical dimensions that operates at the fundamental TE10-mode.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"2015 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":"129637606","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 : 2022-07-10DOI: 10.1109/AP-S/USNC-URSI47032.2022.9886881
T. Simpson, Bill Liles
The history of the Eiffel tower and the attached transmitting antenna in the 1898-1911 era is reviewed with particular attention to technical details involving antenna and tower dimensions, transmitter circuits, and observed performance. Using a scaled drawing constructed from available elevations of the tower and a ball chain simulation, a working model for analysis is shown along with an impedance sweep of the antenna. The resonant frequency is determined along with the capacitance, inductance, and radiation resistance. By comparing these results with those measured at the time, a clearer picture of the antenna is presented.
{"title":"Revisiting the Eiffel Tower Antenna of 1911","authors":"T. Simpson, Bill Liles","doi":"10.1109/AP-S/USNC-URSI47032.2022.9886881","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9886881","url":null,"abstract":"The history of the Eiffel tower and the attached transmitting antenna in the 1898-1911 era is reviewed with particular attention to technical details involving antenna and tower dimensions, transmitter circuits, and observed performance. Using a scaled drawing constructed from available elevations of the tower and a ball chain simulation, a working model for analysis is shown along with an impedance sweep of the antenna. The resonant frequency is determined along with the capacitance, inductance, and radiation resistance. By comparing these results with those measured at the time, a clearer picture of the antenna is presented.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"16 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":"129691501","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 : 2022-07-10DOI: 10.1109/AP-S/USNC-URSI47032.2022.9887088
A. Evans, Chu Ma, S. Hagness
Microwave-induced thermoacoustic imaging is a promising method for monitoring microwave ablation in real-time. We investigate the impact of a dynamic temperature environment on thermacoustic signal characteristics. First, we experimentally validate the simulation model using spatially uniform temperature profiles. Then, we investigate the evolution of TA signal characteristics within the spatially nonuniform temperature profiles that arise during microwave heating. We find that thermoacoustic signal characteristics are highly temperature-dependent and thus change significantly within an environment where temperature varies through space and time.
{"title":"An Experimentally Validated Multi-Physics Simulation of Microwave-Induced Thermoacoustics under Microwave Heating","authors":"A. Evans, Chu Ma, S. Hagness","doi":"10.1109/AP-S/USNC-URSI47032.2022.9887088","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9887088","url":null,"abstract":"Microwave-induced thermoacoustic imaging is a promising method for monitoring microwave ablation in real-time. We investigate the impact of a dynamic temperature environment on thermacoustic signal characteristics. First, we experimentally validate the simulation model using spatially uniform temperature profiles. Then, we investigate the evolution of TA signal characteristics within the spatially nonuniform temperature profiles that arise during microwave heating. We find that thermoacoustic signal characteristics are highly temperature-dependent and thus change significantly within an environment where temperature varies through space and time.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"11 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":"129073677","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}
In this paper, a pattern reconfigurable antenna based on a liquid metal switch is proposed. The antenna is mainly composed of a printed three-element Yagi-Uda antenna whose reflector is loaded with a slot in the middle. A microfluidic channel, filled with a movable liquid metal post and applied as a manipulating switch, is attached to the surface of the reflector. Due to the coupled connection between the radiating arms and liquid metal post, the slot can be shorted or opened by moving the post, leading to changes in the lead and lag of phases between the radiating elements. Thus, the radiation pattern of the antenna can be adjusted. The simulated results achieved by CST Microwave Studio® indicate that the direction of the maximum radiation can be changed by about 180°, and the antenna can operate at 2.4 GHz at two working states.
{"title":"Simulation Design of Pattern Reconfigurable Antenna Based On Liquid Metal Switch","authors":"Yuwei Zhang, Shu Lin, Bingqing Li, Q. Ding, Zhenyi Fan, Xingqi Zhang","doi":"10.1109/AP-S/USNC-URSI47032.2022.9886113","DOIUrl":"https://doi.org/10.1109/AP-S/USNC-URSI47032.2022.9886113","url":null,"abstract":"In this paper, a pattern reconfigurable antenna based on a liquid metal switch is proposed. The antenna is mainly composed of a printed three-element Yagi-Uda antenna whose reflector is loaded with a slot in the middle. A microfluidic channel, filled with a movable liquid metal post and applied as a manipulating switch, is attached to the surface of the reflector. Due to the coupled connection between the radiating arms and liquid metal post, the slot can be shorted or opened by moving the post, leading to changes in the lead and lag of phases between the radiating elements. Thus, the radiation pattern of the antenna can be adjusted. The simulated results achieved by CST Microwave Studio® indicate that the direction of the maximum radiation can be changed by about 180°, and the antenna can operate at 2.4 GHz at two working states.","PeriodicalId":371560,"journal":{"name":"2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI)","volume":"4 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":"129181364","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：