Pub Date : 2021-11-01DOI: 10.1109/comcas52219.2021.9629036
E. Elbaz, Y. Brick
An algorithm for the fast computation of Born approximation scattered field integral for electrically large low-contrast inhomogeneous targets is presented. The algorithm takes advantage of the integrand’s phase in order to efficiently sample partial the contributions to the scattered field, in both the source and observer coordinates. These contributions are gradually interpolated and aggregated, with appropriate phase factors, in a multilevel fashion, in order to obtain the total field integral, sampled at a desired density. This reduces the cost of field integrations by three orders of the scatterer’s electrical length. For the far-field and incident plane wave scenario, the computations are further simplified and reduced to that of a single scalar component.
{"title":"Hierarchical Interpolation Algorithm for Fast Born Approximation Analysis of Scattering by Electrically Large Objects","authors":"E. Elbaz, Y. Brick","doi":"10.1109/comcas52219.2021.9629036","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629036","url":null,"abstract":"An algorithm for the fast computation of Born approximation scattered field integral for electrically large low-contrast inhomogeneous targets is presented. The algorithm takes advantage of the integrand’s phase in order to efficiently sample partial the contributions to the scattered field, in both the source and observer coordinates. These contributions are gradually interpolated and aggregated, with appropriate phase factors, in a multilevel fashion, in order to obtain the total field integral, sampled at a desired density. This reduces the cost of field integrations by three orders of the scatterer’s electrical length. For the far-field and incident plane wave scenario, the computations are further simplified and reduced to that of a single scalar component.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132741630","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 : 2021-11-01DOI: 10.1109/comcas52219.2021.9629024
F. R. Varela, B. Galocha Iragüen, M. S. Castañer
Spherical near-field measurements are regarded as the most accurate antenna testing technique. This accuracy comes with the cost of very strict requirements in terms of near-field sampling density, the measured point distribution, and phase coherence. The fulfillment of such conditions can lead to time-consuming, impractical or expensive measurements. Specially at high frequencies, the required number of points for a successful far-field transformation grows excessively, whereas maintaining a stable phase reference becomes challenging. This paper presents a series of postprocessing techniques which enable to relax these requirements. It is shown how antenna symmetries and a priori knowledge can be exploited to reduce the sampling rate below the Nyquist criterion. In addition, phase coherence can also be avoided by combining measurements in multiple surfaces and proper phase retrieval algorithms. All presented techniques aim to provide faster and cheaper alternatives, while maintaining the accuracy and reliability of near-field spherical measurements.
{"title":"Advanced Spherical Near-field Postprocessing Techniques","authors":"F. R. Varela, B. Galocha Iragüen, M. S. Castañer","doi":"10.1109/comcas52219.2021.9629024","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629024","url":null,"abstract":"Spherical near-field measurements are regarded as the most accurate antenna testing technique. This accuracy comes with the cost of very strict requirements in terms of near-field sampling density, the measured point distribution, and phase coherence. The fulfillment of such conditions can lead to time-consuming, impractical or expensive measurements. Specially at high frequencies, the required number of points for a successful far-field transformation grows excessively, whereas maintaining a stable phase reference becomes challenging. This paper presents a series of postprocessing techniques which enable to relax these requirements. It is shown how antenna symmetries and a priori knowledge can be exploited to reduce the sampling rate below the Nyquist criterion. In addition, phase coherence can also be avoided by combining measurements in multiple surfaces and proper phase retrieval algorithms. All presented techniques aim to provide faster and cheaper alternatives, while maintaining the accuracy and reliability of near-field spherical measurements.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133592321","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 : 2021-11-01DOI: 10.1109/comcas52219.2021.9629062
S. Shapira
We report the manufacturing and integration of lab grown microcrystaline diamond in the wafer and package of advanced silicon integrated circuits and compound semiconductor processes. Diamond which has a thermal conductivity of 1500-2200 W/(m*K), four times higher than copper and fifteen time higher than silicon, significantly reduces the thermal spreading resistance and the junction / core temperature. We present perfomance stress test results performed on a state of the art processor with embedded diamond heat spreader showing a marked increase in processor speed and reduced core temperature when compared to a the same processor in a standard package. A marked reduction in cores temperature spread is also displayed by the diamond embedded processor. Results for power device performance improvement are also described.
{"title":"Performance Enhancement of Integrated Circuits and Power Devices via Embedded Diamond Heat Management","authors":"S. Shapira","doi":"10.1109/comcas52219.2021.9629062","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629062","url":null,"abstract":"We report the manufacturing and integration of lab grown microcrystaline diamond in the wafer and package of advanced silicon integrated circuits and compound semiconductor processes. Diamond which has a thermal conductivity of 1500-2200 W/(m*K), four times higher than copper and fifteen time higher than silicon, significantly reduces the thermal spreading resistance and the junction / core temperature. We present perfomance stress test results performed on a state of the art processor with embedded diamond heat spreader showing a marked increase in processor speed and reduced core temperature when compared to a the same processor in a standard package. A marked reduction in cores temperature spread is also displayed by the diamond embedded processor. Results for power device performance improvement are also described.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"9 S1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113958672","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 : 2021-11-01DOI: 10.1109/comcas52219.2021.9629112
G. P. Zouros, E. Almpanis, Konstantinos Katsinos
In this work we demonstrate our preliminary results on magneto-optic cylinders that may act as optomagnonic cavities. Particularly, we study bismuth-substituted yttrium iron garnet (Bi:YIG) cylinders of a few microns radius and infinite in the axial direction. At first, we present the concept of Zeeman split of optical Mie modes in a statically magnetized cylindrical wire. The solution of this electromagnetic problem is performed using a full-wave volume integral equation method which is capable of dealing with gyroelectric cylinders. The findings of this work can set the basis for a quasi-statical approach of the optomagnonic problem in such systems.
{"title":"Garnet Wires as Optomagnonic Cavities","authors":"G. P. Zouros, E. Almpanis, Konstantinos Katsinos","doi":"10.1109/comcas52219.2021.9629112","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629112","url":null,"abstract":"In this work we demonstrate our preliminary results on magneto-optic cylinders that may act as optomagnonic cavities. Particularly, we study bismuth-substituted yttrium iron garnet (Bi:YIG) cylinders of a few microns radius and infinite in the axial direction. At first, we present the concept of Zeeman split of optical Mie modes in a statically magnetized cylindrical wire. The solution of this electromagnetic problem is performed using a full-wave volume integral equation method which is capable of dealing with gyroelectric cylinders. The findings of this work can set the basis for a quasi-statical approach of the optomagnonic problem in such systems.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114900548","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 : 2021-11-01DOI: 10.1109/comcas52219.2021.9629116
P. R. Bhargav, N. L, P. Kumar
Direction of arrival (DOA) estimation is a key point in Array signal processing. It plays an important role in radar, sonar, wireless communications. The concept of Compressive Sensing (CS) boosted the performance and analysis of the DOA estimation. One of the efficient methods for finding DOA of interested signal is by using CS based recovery algorithm Orthogonal Matching Pursuit (OMP). The extension of this concept to 2-Dimensional, and Multi-path Environment (in presence of Interference) is proposed in this paper. The performance analysis of OMP and MUSIC algorithm in multi-path DOA is discussed and the simulation results shows the better accuracy of OMP over other technique.
{"title":"Compressive Sensing based DOA Estimation for Multi-path Environment","authors":"P. R. Bhargav, N. L, P. Kumar","doi":"10.1109/comcas52219.2021.9629116","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629116","url":null,"abstract":"Direction of arrival (DOA) estimation is a key point in Array signal processing. It plays an important role in radar, sonar, wireless communications. The concept of Compressive Sensing (CS) boosted the performance and analysis of the DOA estimation. One of the efficient methods for finding DOA of interested signal is by using CS based recovery algorithm Orthogonal Matching Pursuit (OMP). The extension of this concept to 2-Dimensional, and Multi-path Environment (in presence of Interference) is proposed in this paper. The performance analysis of OMP and MUSIC algorithm in multi-path DOA is discussed and the simulation results shows the better accuracy of OMP over other technique.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128432552","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 : 2021-11-01DOI: 10.1109/comcas52219.2021.9629110
B. Nayak, C. Mathai, O. Shtempluk, E. Buks
Coupling both optical light and microwave with magnetic materials is a pursued area of research recently as it will lead to emerging quantum technologies. Although spin waves in magnetic materials can be strongly coupled to microwave radiation, effective coupling of optical light with spin wave in magnetic system is still a major challenge. We have set up a figure-8 laser and integrated it with a coupled ferrimagnetic sphere-microwave resonator. We demonstrate the modulation of optical spectrum of figure-8 laser pulse by interaction with the microwave coupled ferrimagnetic YIG sphere. We observe that spectral peaks of optical pulses are governed by cavity modes formed by the YIG element.
{"title":"Interaction of Microwave Coupled Ferrimagnetic Sphere with Figure-8 Laser","authors":"B. Nayak, C. Mathai, O. Shtempluk, E. Buks","doi":"10.1109/comcas52219.2021.9629110","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629110","url":null,"abstract":"Coupling both optical light and microwave with magnetic materials is a pursued area of research recently as it will lead to emerging quantum technologies. Although spin waves in magnetic materials can be strongly coupled to microwave radiation, effective coupling of optical light with spin wave in magnetic system is still a major challenge. We have set up a figure-8 laser and integrated it with a coupled ferrimagnetic sphere-microwave resonator. We demonstrate the modulation of optical spectrum of figure-8 laser pulse by interaction with the microwave coupled ferrimagnetic YIG sphere. We observe that spectral peaks of optical pulses are governed by cavity modes formed by the YIG element.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132752080","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 : 2021-11-01DOI: 10.1109/comcas52219.2021.9629000
H. Habi, H. Messer
Rain fields’ simulation is an important tool for several research fields and applications. However, most simulations are based on a naive model that cannot capture complex spatial distribution. In this work, we present RainGAN, a generative model that enables a generation of a realistic, complex rain field that is conditioned on user parameters such as max peak, number of peaks, etc. In addition, we construct a dataset of typical rain fields that are based on radar measurement and have been utilized in the training process. We conducted several experiments and demonstrate the generator quality using both numerical and visual results.
{"title":"RainGAN: A Conditional Rain Fields Generator","authors":"H. Habi, H. Messer","doi":"10.1109/comcas52219.2021.9629000","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629000","url":null,"abstract":"Rain fields’ simulation is an important tool for several research fields and applications. However, most simulations are based on a naive model that cannot capture complex spatial distribution. In this work, we present RainGAN, a generative model that enables a generation of a realistic, complex rain field that is conditioned on user parameters such as max peak, number of peaks, etc. In addition, we construct a dataset of typical rain fields that are based on radar measurement and have been utilized in the training process. We conducted several experiments and demonstrate the generator quality using both numerical and visual results.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125697604","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 : 2021-11-01DOI: 10.1109/comcas52219.2021.9629073
Dana Maklada, Yasmine Obeid-Zoabi, Alon Eilam, Michael Dikshtein
High precision indoor position estimation enables new opportunities for a variety of commercial, industrial and consumer applications. In this paper, we consider a phase-based method to calculate range from noisy measurements of a Frequency Comb in a multi-fading environment. It can be used to determine the range between devices for the next-generation High Accuracy Distance Measurement (HADM) protocol. We have conducted a quantitative analysis of various estimation approaches, considering both Monte-Carlo simulations of synthetic data in a variety of ranges. Moreover, we have proposed evaluation schemes for situations in which only a subset of data is available and some information may be missing, which extends existing approaches.
{"title":"High Accuracy Distance Measurement Using Frequency Comb","authors":"Dana Maklada, Yasmine Obeid-Zoabi, Alon Eilam, Michael Dikshtein","doi":"10.1109/comcas52219.2021.9629073","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629073","url":null,"abstract":"High precision indoor position estimation enables new opportunities for a variety of commercial, industrial and consumer applications. In this paper, we consider a phase-based method to calculate range from noisy measurements of a Frequency Comb in a multi-fading environment. It can be used to determine the range between devices for the next-generation High Accuracy Distance Measurement (HADM) protocol. We have conducted a quantitative analysis of various estimation approaches, considering both Monte-Carlo simulations of synthetic data in a variety of ranges. Moreover, we have proposed evaluation schemes for situations in which only a subset of data is available and some information may be missing, which extends existing approaches.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123854854","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 : 2021-11-01DOI: 10.1109/comcas52219.2021.9629002
A. Vulfovich, M. Peretz, A. Kuperman
Constant voltage output is often desirable in applications concerning inductive wireless power transfer systems. In these applications there is often misalignment and variance in distance between the transmitter and receiver sides which has an effect on the coupling coefficient between the transmitter and receiver sides This forces the system to operate in a range of coupling coefficients rather than a single working point and leads to the need for more robust system to be developed. This paper introduces a series-series (S-S) compensated inductive wireless power transfer (WPT) link with closed loop variable primary capacitor output voltage control in order to address the above issues. Theoretical basis is derived and proof of concept is done in simulation.
{"title":"Output Voltage Feedback Control Method for Series-Series Compensated Inductive Wireless Power Transfer Link with Varying Primary Capacitor","authors":"A. Vulfovich, M. Peretz, A. Kuperman","doi":"10.1109/comcas52219.2021.9629002","DOIUrl":"https://doi.org/10.1109/comcas52219.2021.9629002","url":null,"abstract":"Constant voltage output is often desirable in applications concerning inductive wireless power transfer systems. In these applications there is often misalignment and variance in distance between the transmitter and receiver sides which has an effect on the coupling coefficient between the transmitter and receiver sides This forces the system to operate in a range of coupling coefficients rather than a single working point and leads to the need for more robust system to be developed. This paper introduces a series-series (S-S) compensated inductive wireless power transfer (WPT) link with closed loop variable primary capacitor output voltage control in order to address the above issues. Theoretical basis is derived and proof of concept is done in simulation.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122286829","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 : 2021-11-01DOI: 10.1109/COMCAS52219.2021.9628997
S. Sayfan-Altman, R. Bloch, A. Manukovsky
In this work we will examine the manufacturing variation effect and design robustness in the context of complex PCB structures’ performance for high-speed links. A case study of robust design implementation for a differential capacitor structure is examined. The main design parameters variation is identified and key contributors to performance degradation are outlined. Then a method of maximizing design robustness is presented and a commonly used design is altered to maximize immunity to manufacturing variation. The proposed structure robustness is analyzed, and superior impedance control under various scenarios of expected manufacturing variation is demonstrated.
{"title":"The Hidden Challenges in Manufacturing Variations","authors":"S. Sayfan-Altman, R. Bloch, A. Manukovsky","doi":"10.1109/COMCAS52219.2021.9628997","DOIUrl":"https://doi.org/10.1109/COMCAS52219.2021.9628997","url":null,"abstract":"In this work we will examine the manufacturing variation effect and design robustness in the context of complex PCB structures’ performance for high-speed links. A case study of robust design implementation for a differential capacitor structure is examined. The main design parameters variation is identified and key contributors to performance degradation are outlined. Then a method of maximizing design robustness is presented and a commonly used design is altered to maximize immunity to manufacturing variation. The proposed structure robustness is analyzed, and superior impedance control under various scenarios of expected manufacturing variation is demonstrated.","PeriodicalId":354885,"journal":{"name":"2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129498585","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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