Pub Date : 2019-04-01DOI: 10.1109/WAMICON.2019.8765432
Holden Clark, N. Jeong, Seongcheol Jeong
This paper demonstrates that antenna design and performance can be prominently improved by linking commerically available software with the Hybrid Particle Swarm (HPSO) optimization algorithm. To demostrate this technique, multiple parasitic elements were added to a conventional patch antenna and optimized for bandwidth and realized gain. HPSO is implimented with Python and a commercially available full-wave software, ANSYS High Frequency Structure Simulator (HFSS). The simulated and measured results show that antenna performance is substantiably improved in both bandwith and realized gain, with an increase of 10% in −10 dB bandwidth and approximately 15% in realized gain.
{"title":"Concurrent Gain and Bandwidth Improvement of a Patch Antenna with a Hybrid Particle Swarm Optimization Algorithm","authors":"Holden Clark, N. Jeong, Seongcheol Jeong","doi":"10.1109/WAMICON.2019.8765432","DOIUrl":"https://doi.org/10.1109/WAMICON.2019.8765432","url":null,"abstract":"This paper demonstrates that antenna design and performance can be prominently improved by linking commerically available software with the Hybrid Particle Swarm (HPSO) optimization algorithm. To demostrate this technique, multiple parasitic elements were added to a conventional patch antenna and optimized for bandwidth and realized gain. HPSO is implimented with Python and a commercially available full-wave software, ANSYS High Frequency Structure Simulator (HFSS). The simulated and measured results show that antenna performance is substantiably improved in both bandwith and realized gain, with an increase of 10% in −10 dB bandwidth and approximately 15% in realized gain.","PeriodicalId":328717,"journal":{"name":"2019 IEEE 20th Wireless and Microwave Technology Conference (WAMICON)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131209425","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 : 2019-04-01DOI: 10.1109/WAMICON.2019.8765430
A. Abdelraheem, M. Sinanis, D. Peroulis
We introduce a new cavity-based wireless power transmission (WPT) system that could be applied to any cavity-based equipment regardless of its shape and size. The proposed scheme provides uniform and selective powering modes. In either powering mode, the field is isotropic, which removes the WPT-restrictions on placement and orientation of the energy harvester. The design process has three main steps, randomness creation, frequency selection, and waveform generation. We validate the proposed scheme in a lab lyophiliser’s (freeze-drier) chamber. First, we create a random electromagnetic environment using mechanical stirring. Then, we evaluate this randomness in terms of the average to minimum power ratio. To select an appropriate frequency for the WPT system, we consider randomness and power uniformity. To maintain randomness, we extract the lowest usable frequency of the chamber using a Goodness of Fit test; this is found to be 6 GHz. As for the power uniformity, we plot the standard deviation (STD) of a large sample of the received powers at different locations. This plot is used to select the frequency based on an arbitrary uniformity level in terms of STD. At 6 GHz a 2.5 dB standard deviation is calculated. To enable the selective powering mode, we propose the electromagnetic time reversal (EMTR) technique. We show that EMTR can, theoretically, focus 97% of the energy on 0.5λ-diameter area in an ideally random environment.
{"title":"A New Wireless Power Transmission (WPT) System for Powering Wireless Sensor Networks (WSNs) in Cavity-Based Equipment","authors":"A. Abdelraheem, M. Sinanis, D. Peroulis","doi":"10.1109/WAMICON.2019.8765430","DOIUrl":"https://doi.org/10.1109/WAMICON.2019.8765430","url":null,"abstract":"We introduce a new cavity-based wireless power transmission (WPT) system that could be applied to any cavity-based equipment regardless of its shape and size. The proposed scheme provides uniform and selective powering modes. In either powering mode, the field is isotropic, which removes the WPT-restrictions on placement and orientation of the energy harvester. The design process has three main steps, randomness creation, frequency selection, and waveform generation. We validate the proposed scheme in a lab lyophiliser’s (freeze-drier) chamber. First, we create a random electromagnetic environment using mechanical stirring. Then, we evaluate this randomness in terms of the average to minimum power ratio. To select an appropriate frequency for the WPT system, we consider randomness and power uniformity. To maintain randomness, we extract the lowest usable frequency of the chamber using a Goodness of Fit test; this is found to be 6 GHz. As for the power uniformity, we plot the standard deviation (STD) of a large sample of the received powers at different locations. This plot is used to select the frequency based on an arbitrary uniformity level in terms of STD. At 6 GHz a 2.5 dB standard deviation is calculated. To enable the selective powering mode, we propose the electromagnetic time reversal (EMTR) technique. We show that EMTR can, theoretically, focus 97% of the energy on 0.5λ-diameter area in an ideally random environment.","PeriodicalId":328717,"journal":{"name":"2019 IEEE 20th Wireless and Microwave Technology Conference (WAMICON)","volume":"471 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132893837","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 : 2019-04-01DOI: 10.1109/WAMICON.2019.8765443
P. Roblin, C. Chang, Hsiu-Chen Chang, K. Rawat
This paper reviews the accelerated design of power amplifiers (PA) using a nonlinear embedding device model. Examples of practical application to the design Class F, continuous Class-J and Chireix PAs are presented together with the use of a graphic interface (GUI) for the automatic design of dual-input Doherty PAs. Preliminary simulation results on the application of nonlinear embedding to the design of PAs operating in class E at the current-source reference planes are also reported. A modified embedding device model is used for this purpose.
{"title":"Class-E PA Prototype Using An Embedding Model : Invited Paper","authors":"P. Roblin, C. Chang, Hsiu-Chen Chang, K. Rawat","doi":"10.1109/WAMICON.2019.8765443","DOIUrl":"https://doi.org/10.1109/WAMICON.2019.8765443","url":null,"abstract":"This paper reviews the accelerated design of power amplifiers (PA) using a nonlinear embedding device model. Examples of practical application to the design Class F, continuous Class-J and Chireix PAs are presented together with the use of a graphic interface (GUI) for the automatic design of dual-input Doherty PAs. Preliminary simulation results on the application of nonlinear embedding to the design of PAs operating in class E at the current-source reference planes are also reported. A modified embedding device model is used for this purpose.","PeriodicalId":328717,"journal":{"name":"2019 IEEE 20th Wireless and Microwave Technology Conference (WAMICON)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115033931","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 : 2019-04-01DOI: 10.1109/WAMICON.2019.8765445
Omer F. Firat, M. Abdin, Jing Wang, T. Weller
This paper outlines a new type of versatile 3-D printed suspended coplanar waveguide (CPW) interconnects that are well suited for packaging of mm-wave systems. The design, fabrication process and characterization results are presented. 3D printing quality, namely feature size and dimensional accuracy, was improved by utilizing well-characterized laser machining techniques. The laser machining process enables the control of the dimensions of micro-dispensed conductive traces down to a few micrometers. CPW lines are printed on a fixed-fixed beam and can be extended over the bridge across devices such as a low noise amplifier MMIC chip or another interconnect layer underneath. Acrylonitrile butadiene styrene (ABS) and CB028 conductive silver paste are utilized to fabricate the CPW lines on suspended beams over an air cavity. Simulated and measured S-parameters up to 30 GHz for an interconnect are presented. The conductor width, ground width, and slot width are 160 μm, 260 μm, and 20 μm, respectively. The measured transmission line loss of the suspended CPW line is 0.26 dB/mm at 30 GHz.
{"title":"Low-Loss Suspended Crossover Interconnects using Laser Enhanced Direct Print Additive Manufacturing","authors":"Omer F. Firat, M. Abdin, Jing Wang, T. Weller","doi":"10.1109/WAMICON.2019.8765445","DOIUrl":"https://doi.org/10.1109/WAMICON.2019.8765445","url":null,"abstract":"This paper outlines a new type of versatile 3-D printed suspended coplanar waveguide (CPW) interconnects that are well suited for packaging of mm-wave systems. The design, fabrication process and characterization results are presented. 3D printing quality, namely feature size and dimensional accuracy, was improved by utilizing well-characterized laser machining techniques. The laser machining process enables the control of the dimensions of micro-dispensed conductive traces down to a few micrometers. CPW lines are printed on a fixed-fixed beam and can be extended over the bridge across devices such as a low noise amplifier MMIC chip or another interconnect layer underneath. Acrylonitrile butadiene styrene (ABS) and CB028 conductive silver paste are utilized to fabricate the CPW lines on suspended beams over an air cavity. Simulated and measured S-parameters up to 30 GHz for an interconnect are presented. The conductor width, ground width, and slot width are 160 μm, 260 μm, and 20 μm, respectively. The measured transmission line loss of the suspended CPW line is 0.26 dB/mm at 30 GHz.","PeriodicalId":328717,"journal":{"name":"2019 IEEE 20th Wireless and Microwave Technology Conference (WAMICON)","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127360830","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 : 2019-04-01DOI: 10.1109/WAMICON.2019.8765466
N. Jeong, E. Hackett, Jun Youp Lee, E. Sazonov
This paper presents a wireless charging system that can power up footwear-based sensors. Loosely coupled magnetic resonant technique was applied to achieve a 20 mm-long charging distance relative to the conventional Qi charging, which requires close proximity and precise alignment. Transmitting and receiving resonators are modeled and simulated with a full-wave solver, ANSYS HFSS. Simulation results match measured results with respect to coupling coefficient (k). The resonator coupling efficiency (RCE) for the loosely coupled wireless charging system over a 20 mm gap is 65%, which seems feasible for a small battery-operated sensor system.
{"title":"Loosely Coupled Wireless Charging of Footwear-based Sensor System","authors":"N. Jeong, E. Hackett, Jun Youp Lee, E. Sazonov","doi":"10.1109/WAMICON.2019.8765466","DOIUrl":"https://doi.org/10.1109/WAMICON.2019.8765466","url":null,"abstract":"This paper presents a wireless charging system that can power up footwear-based sensors. Loosely coupled magnetic resonant technique was applied to achieve a 20 mm-long charging distance relative to the conventional Qi charging, which requires close proximity and precise alignment. Transmitting and receiving resonators are modeled and simulated with a full-wave solver, ANSYS HFSS. Simulation results match measured results with respect to coupling coefficient (k). The resonator coupling efficiency (RCE) for the loosely coupled wireless charging system over a 20 mm gap is 65%, which seems feasible for a small battery-operated sensor system.","PeriodicalId":328717,"journal":{"name":"2019 IEEE 20th Wireless and Microwave Technology Conference (WAMICON)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134080096","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 : 2019-04-01DOI: 10.1109/WAMICON.2019.8765448
S. Gruszczynski, K. Wincza
A design of a differentially exited directional filter has been investigated theoretically and experimentally. In the filter edge-coupled symmetrical differentially-fed coupled-line sections have been utilized. The results of calculations show the proper operation of the designed filter. The experimental results of a second-order filter having center frequency equal 2.45 GHz are presented and commented.
{"title":"Differentially-fed directional filter with differential edge-coupled-line sections","authors":"S. Gruszczynski, K. Wincza","doi":"10.1109/WAMICON.2019.8765448","DOIUrl":"https://doi.org/10.1109/WAMICON.2019.8765448","url":null,"abstract":"A design of a differentially exited directional filter has been investigated theoretically and experimentally. In the filter edge-coupled symmetrical differentially-fed coupled-line sections have been utilized. The results of calculations show the proper operation of the designed filter. The experimental results of a second-order filter having center frequency equal 2.45 GHz are presented and commented.","PeriodicalId":328717,"journal":{"name":"2019 IEEE 20th Wireless and Microwave Technology Conference (WAMICON)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116966528","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 : 2019-04-01DOI: 10.1109/WAMICON.2019.8765453
S. Norsworthy
Modern RF communications systems entail high speed A/D and D/A converter with digital signal processing. While data conversion can be performed directly at RF, there are many obstacles to overcome, and we are far from being able to directly connect the data converters to the antenna without gain and filtering. This tutorial will explore the consequences of RF data conversion, and various considerations of their usage for successful implementation in RF transceivers.
{"title":"RF Data Conversion for Software Defined Radios","authors":"S. Norsworthy","doi":"10.1109/WAMICON.2019.8765453","DOIUrl":"https://doi.org/10.1109/WAMICON.2019.8765453","url":null,"abstract":"Modern RF communications systems entail high speed A/D and D/A converter with digital signal processing. While data conversion can be performed directly at RF, there are many obstacles to overcome, and we are far from being able to directly connect the data converters to the antenna without gain and filtering. This tutorial will explore the consequences of RF data conversion, and various considerations of their usage for successful implementation in RF transceivers.","PeriodicalId":328717,"journal":{"name":"2019 IEEE 20th Wireless and Microwave Technology Conference (WAMICON)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121199195","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 : 2019-04-01DOI: 10.1109/WAMICON.2019.8765473
Arya Menon, M. Grady, T. Weller
This paper presents a generalized radiometer system equation (RSE) for total power radiometers that corrects for mismatch and temperature-dependent system losses, and may be applied with any combination of calibration sources. The equation is validated through simulation in Keysight ADS as well as experimentally using a K-band radiometer. The estimated temperature is compared with calculated values from other known equations, which are reduced forms of the RSE under different assumptions, namely (i) all components are at the same temperature (isothermal case), and (ii) mismatch can be ignored and only temperature-dependent insertion loss is corrected (loss only case). Simulations with a 50 Ω load at 310 K shows errors of −0.18 K, −0.56 K and −0.76 K with the RSE, isothermal case and loss only case, respectively. Experimental results confirm that the RSE gives the lowest error, thereby demonstrating that it models the system more accurately than the other two treatments.
{"title":"A Generalized Radiometer System Equation That Includes Temperature-Dependent System Losses","authors":"Arya Menon, M. Grady, T. Weller","doi":"10.1109/WAMICON.2019.8765473","DOIUrl":"https://doi.org/10.1109/WAMICON.2019.8765473","url":null,"abstract":"This paper presents a generalized radiometer system equation (RSE) for total power radiometers that corrects for mismatch and temperature-dependent system losses, and may be applied with any combination of calibration sources. The equation is validated through simulation in Keysight ADS as well as experimentally using a K-band radiometer. The estimated temperature is compared with calculated values from other known equations, which are reduced forms of the RSE under different assumptions, namely (i) all components are at the same temperature (isothermal case), and (ii) mismatch can be ignored and only temperature-dependent insertion loss is corrected (loss only case). Simulations with a 50 Ω load at 310 K shows errors of −0.18 K, −0.56 K and −0.76 K with the RSE, isothermal case and loss only case, respectively. Experimental results confirm that the RSE gives the lowest error, thereby demonstrating that it models the system more accurately than the other two treatments.","PeriodicalId":328717,"journal":{"name":"2019 IEEE 20th Wireless and Microwave Technology Conference (WAMICON)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121718226","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 : 2019-04-01DOI: 10.1109/WAMICON.2019.8765456
R. Bhattacharya, J. Lohani, A. Gupta, V. Aggarwal, H. Singh, T. Kukal, C. Moll, D. Baldwin, J. Park
A holistic system design approach is presented in this work which helps co-design and analyse a multi technology array of ICs, packages and PCBs. The proposed methodology provides the key functionality to simulate and thus co design an IC in context of its PCB and package parasitic models, at the same time, staying within the IC designers preferred design and simulation environment requiring minimal knowledge of packaging and PCB design techniques. It is, primarily, an IC centric co design environment and a simulation solution that allows the analog, RF, and mixed-signal designers to drive designs of package modules to their packaging teams and define simulation testbenches that include the native IC and its corresponding package, and PCB interconnect and component level parasitic models prior to tape-out. The breadth of this “one-ocean” solution caters equally to a wide array of applications including mm-wave RF, power management ICs and low power analog front ends.
{"title":"Enabling chip, package and PCB system co design and analysis in a heterogeneous integration environment - An EDA approach","authors":"R. Bhattacharya, J. Lohani, A. Gupta, V. Aggarwal, H. Singh, T. Kukal, C. Moll, D. Baldwin, J. Park","doi":"10.1109/WAMICON.2019.8765456","DOIUrl":"https://doi.org/10.1109/WAMICON.2019.8765456","url":null,"abstract":"A holistic system design approach is presented in this work which helps co-design and analyse a multi technology array of ICs, packages and PCBs. The proposed methodology provides the key functionality to simulate and thus co design an IC in context of its PCB and package parasitic models, at the same time, staying within the IC designers preferred design and simulation environment requiring minimal knowledge of packaging and PCB design techniques. It is, primarily, an IC centric co design environment and a simulation solution that allows the analog, RF, and mixed-signal designers to drive designs of package modules to their packaging teams and define simulation testbenches that include the native IC and its corresponding package, and PCB interconnect and component level parasitic models prior to tape-out. The breadth of this “one-ocean” solution caters equally to a wide array of applications including mm-wave RF, power management ICs and low power analog front ends.","PeriodicalId":328717,"journal":{"name":"2019 IEEE 20th Wireless and Microwave Technology Conference (WAMICON)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114607645","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 : 2019-04-01DOI: 10.1109/WAMICON.2019.8765454
Y. Wang
Nonlinear RF magnetic devices such as frequency selective limiters (FSL) can offer tremendous amount of benefit to the robustness of a RF front-end as it sets a power limit only to the frequencies where strong signal presents while allowing weak signals at different frequencies to pass. Its behavior involves coupling of electromagnetic waves to spin waves oscillations in ferrite material on which no traditional model is available to provide quantitive prediction of its performance. In this talk, we will present a nonlinear circuit model for FSL device design. The dominant magnetic-behaviors of FSL devices are translated into equivalent circuits with parameters rigorously determined from fundamental physics. The spin motions as well as the ferromagnetic resonance (FMR) are modeled by RLC parallel circuits with parameters derived from Polder’s tensor and Kittel’s equations. The exchange coupling between spins is modeled by an inductor added between adjacent RLC circuits based on quantum spin theory. The nonlinear cross-frequency coupling from signal at ω to spin waves at ω/2 is represented by a pendulum model that predicts the parametric oscillations of spins. The circuit units are cascaded to describe the spin wave propagation inside the magnetic material, and transmission line parameters are added finally to describe the RF signal propagation. The simulation results match the measurement results published, and the model successfully predicts the threshold power level, nonlinear insertion loss, time delay, and frequency selectivity of the device. The modeling approach opens a new paradigm in simulating strong, nonlinear wave-matter coupling in certain RF devices, in which the macroscopic behavior of the device is linked to quantum physics that is happening in nanometer dimensions.
{"title":"Demystify Nonlinear RF Magnetic Devices with Circuit Models Coupling Electromagnetic Waves to Spin Waves","authors":"Y. Wang","doi":"10.1109/WAMICON.2019.8765454","DOIUrl":"https://doi.org/10.1109/WAMICON.2019.8765454","url":null,"abstract":"Nonlinear RF magnetic devices such as frequency selective limiters (FSL) can offer tremendous amount of benefit to the robustness of a RF front-end as it sets a power limit only to the frequencies where strong signal presents while allowing weak signals at different frequencies to pass. Its behavior involves coupling of electromagnetic waves to spin waves oscillations in ferrite material on which no traditional model is available to provide quantitive prediction of its performance. In this talk, we will present a nonlinear circuit model for FSL device design. The dominant magnetic-behaviors of FSL devices are translated into equivalent circuits with parameters rigorously determined from fundamental physics. The spin motions as well as the ferromagnetic resonance (FMR) are modeled by RLC parallel circuits with parameters derived from Polder’s tensor and Kittel’s equations. The exchange coupling between spins is modeled by an inductor added between adjacent RLC circuits based on quantum spin theory. The nonlinear cross-frequency coupling from signal at ω to spin waves at ω/2 is represented by a pendulum model that predicts the parametric oscillations of spins. The circuit units are cascaded to describe the spin wave propagation inside the magnetic material, and transmission line parameters are added finally to describe the RF signal propagation. The simulation results match the measurement results published, and the model successfully predicts the threshold power level, nonlinear insertion loss, time delay, and frequency selectivity of the device. The modeling approach opens a new paradigm in simulating strong, nonlinear wave-matter coupling in certain RF devices, in which the macroscopic behavior of the device is linked to quantum physics that is happening in nanometer dimensions.","PeriodicalId":328717,"journal":{"name":"2019 IEEE 20th Wireless and Microwave Technology Conference (WAMICON)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123125994","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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