Seong-Jin Kim, Jeong-Wook Kim, Hyo-Won Lee, Hyunyoung Cho, Ju-Ik Oh, Jong-Won Yu
{"title":"Design of Multiple- Transmitter WPT System with Angular Misalignment Estimation from Mutual Inductance Tracking","authors":"Seong-Jin Kim, Jeong-Wook Kim, Hyo-Won Lee, Hyunyoung Cho, Ju-Ik Oh, Jong-Won Yu","doi":"10.23919/EuMC54642.2022.9924393","DOIUrl":"https://doi.org/10.23919/EuMC54642.2022.9924393","url":null,"abstract":"In this paper, a three-orthogonal WPT system is proposed to estimate the angular misalignment of a receiver from the mutual inductance tracking method between transmitters and a receiver. With the estimated angles, the magnetic field is orientated to improve transfer efficiency. The magnetic field generated by the orthogonal coils is theoretically analyzed, and the mutual inductance tracking method is verified with EM simulation in the equivalent circuit of a basic WPT system. The implemented system can track the mutual inductance in real-time, and control input currents for the magnetic field orientation. For verification, the proposed system is implemented to track the mutual inductance, estimate the angular misalignment, and finally shape the magnetic field for the transfer efficiency improvement.","PeriodicalId":215592,"journal":{"name":"2022 52nd European Microwave Conference (EuMC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115722734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A 232–242 GHz Coherent Transmitter with 1.2mW Peak Radiated Power in 28nm CMOS","authors":"Sumeet Londhe, E. Socher","doi":"10.23919/EuMC54642.2022.9924369","DOIUrl":"https://doi.org/10.23919/EuMC54642.2022.9924369","url":null,"abstract":"In this paper a 232–242 GHz radiating transmitter (Tx) is presented in TSMC 28nm bulk CMOS. The Tx consists of 75–85 GHz PA (power amplifier) followed by 75–85 GHz to 225–255 GHz tripler. The PA and tripler are single common source stages with 0.9V supply. The output of the tripler is connected to an on-chip ring structure that excites an on-chip dielectric resonance antenna (DRA). The radiating Tx has a directivity of 6.5 dBi with 60% efficiency and 10 GHz bandwidth. The Tx has a measured peak EIRP of 6dBm, a record 0.7 dBm total radiated power and a DC-to-RF efficiency of 1.5%","PeriodicalId":215592,"journal":{"name":"2022 52nd European Microwave Conference (EuMC)","volume":"322 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124556816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Waveguide Array Applicator for Microwave Medical Imaging","authors":"M. Babak, J. Vrba","doi":"10.23919/EuMC54642.2022.9924394","DOIUrl":"https://doi.org/10.23919/EuMC54642.2022.9924394","url":null,"abstract":"In this paper, we propose a novel idea of a diagnostic applicator composed of an array of 8 waveguides filled with distilled water, which can be used for non-invasive temperature measurement based on microwave tomography during cancer treatment using microwave hyperthermia. The waveguide design procedure and simulation results from SEMCAD X are presented. To verify the impedance matching of the applicator, scattering matrix measurements were performed with a muscle tissue agar phantom. Measurements with dielectric inhomogeneity in the agar phantom region are presented to demonstrate the feasibility of using our design for further developments in this area.","PeriodicalId":215592,"journal":{"name":"2022 52nd European Microwave Conference (EuMC)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114856216","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}
D. Romano, Fabrizio Loreto, Giulio Antonini, Ivana Kovačević-Badstübner, U. Grossner
{"title":"Accelerated Partial Inductance Evaluation via Cubic Spline Interpolation for the PEEC Method","authors":"D. Romano, Fabrizio Loreto, Giulio Antonini, Ivana Kovačević-Badstübner, U. Grossner","doi":"10.23919/EuMC54642.2022.9924483","DOIUrl":"https://doi.org/10.23919/EuMC54642.2022.9924483","url":null,"abstract":"The partial element equivalent circuit (PEEC) method provides a valuable solution of the Maxwell's equations in both the frequency and time domain. The computation of volume interaction integrals, also if performed in closed form, can be very time-consuming for large problems in which the storage of partial matrices is prohibitive. Iterative solvers allow to overcome this limitation by computing on the fly only matrix rows at each iteration step. For this reason, it is required a fast computation of the partial elements even under quasi-static hypothesis. In this work, an effective methodology for the interpolation in space of the partial inductances required by the PEEC method is developed. The proposed computation is performed through the cubic spline interpolation method, that, under the hypothesis of cubic meshed regions, guarantees always a significant speed-up without loss of the accuracy.","PeriodicalId":215592,"journal":{"name":"2022 52nd European Microwave Conference (EuMC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116978313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Super-Compact, High-Performance Rat-Race Coupler for Sub-1 GHz 5G Applications","authors":"Vahid Irannejad, S. Barth, D. Oloumi","doi":"10.23919/EuMC54642.2022.9924472","DOIUrl":"https://doi.org/10.23919/EuMC54642.2022.9924472","url":null,"abstract":"Two ultra-compact Rat-Race couplers are presented, which are designed using planar artificial transmission lines composed of multiple meandered sections using a novel asymmetrical T-model technique. These single and double-layer couplers are suitable for 5G sub-l GHz applications at a center frequency of 900 MHz. The miniaturized couplers occupy approximately 4.8% and 2.1 % of the area of the canonical circular coupler, respectively.","PeriodicalId":215592,"journal":{"name":"2022 52nd European Microwave Conference (EuMC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117073336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An Efficient Two-Step Leapfrog HIE- FDTD Method With More Relaxed Stability Condition","authors":"Ankit Kumar Pandey, A. K. Saxena","doi":"10.23919/EuMC54642.2022.9924425","DOIUrl":"https://doi.org/10.23919/EuMC54642.2022.9924425","url":null,"abstract":"This paper presents an efficient two-step leapfrog hybrid implicit-explicit finite-difference time domain (HIE-FDTD) method with more relaxed stability condition. A two-step leapfrog HIE-FDTD method has been derived from the four-step HIE-FDTD method. The proposed method is more efficient than the existing four-step HIE-FDTD method while keeping the same stability condition and numerical dispersion error. In addition, the proposed method shown lees numerical dispersion error than that of the alternating-direction implicit method (ADI-FDTD). Numerical simulations are used to validate the analytical results. The two-step leapfrog HIE-FDTD method has second-order temporal and spatial accuracy.","PeriodicalId":215592,"journal":{"name":"2022 52nd European Microwave Conference (EuMC)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117352831","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}
G. van der Bent, P. de Hek, R. Knight, F. V. van Vliet
{"title":"High Performance Stacked-FETs in 0.25 µm GaN Technology for S-band Power Amplifiers","authors":"G. van der Bent, P. de Hek, R. Knight, F. V. van Vliet","doi":"10.23919/EuMC54642.2022.9924448","DOIUrl":"https://doi.org/10.23919/EuMC54642.2022.9924448","url":null,"abstract":"In this article the feasibility and benefits of Stacked-FET structures in a state-of-art GaN technology are investigated. Trade-offs between output power, efficiency and stability are made to yield stable, high performance devices. The results of three S-band GaN stacked-FET structures in the UMS GH25-10 technology are given. These structures are designed for drain voltages levels of 60 V or higher, which is (more than) twice the nominal drain voltage for this technology. It is shown that power level above 5 W/mm with PAE levels above 60 % are achieved. The obtained results are translated to power amplifier performance estimations showing the potential of these structures.","PeriodicalId":215592,"journal":{"name":"2022 52nd European Microwave Conference (EuMC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125929416","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}
Nethini T. Weerathunge, S. Chakraborty, S. Mahon, M. Heimlich
{"title":"An Ultra-Compact Power Divider for MMIC Applications","authors":"Nethini T. Weerathunge, S. Chakraborty, S. Mahon, M. Heimlich","doi":"10.23919/EuMC54642.2022.9924328","DOIUrl":"https://doi.org/10.23919/EuMC54642.2022.9924328","url":null,"abstract":"A miniaturized power divider implemented in $0.15 mu mathrm{m}$ Gallium Nitride technology, using a combination of stepped impedance transmission lines and a capacitive loading technique is presented. The circuit implementation challenges which include a trade-off between the circuit compactness, fractional bandwidth and width of the lines versus the loaded capacitor value is demonstrated for the first time. This design achieves an overall compactness of 85% compared to the conventional Wilkinson power divider and a fractional bandwidth of 69%. The measured insertion loss is 0.8 dB. The proposed power divider demonstrates the minimum measured magnitude and phase imbalance combination which is lower than 0.06 dB and 1.1° respectively compared to the state-of-the art designs reported in literature.","PeriodicalId":215592,"journal":{"name":"2022 52nd European Microwave Conference (EuMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128731738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Differential bondwire interface for chip-to-chip and chip-to-antenna interconnect above 200 GHz","authors":"Joachim Hebeler, Luca Steinweg, T. Zwick","doi":"10.23919/EuMC54642.2022.9924340","DOIUrl":"https://doi.org/10.23919/EuMC54642.2022.9924340","url":null,"abstract":"This paper investigates a novel differential transition using bond wires for chip-to-chip and chip-to-antenna connections for systems operating above 200 GHz. At mm-wave frequencies, the bond-wire interface can be modeled as a transmission line tuned to match the system impedance removing the need for matching or compensation. The interface is aimed at providing design and measurement flexibility for a transmitter system operating around 245 GHz. It is characterized by using on-chip Marchand BALUNs to measure the system and the transition itself. It achieves a worst case loss of −6 dB covering the full WR-3.4 band which is competitive to the state of the art. To the best of the author's knowledge, this is the first publication of a differential bond wire transition operating above 200 GHz.","PeriodicalId":215592,"journal":{"name":"2022 52nd European Microwave Conference (EuMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129938253","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}
A. Ghadimi, Mohammad Shirmohammadkarimi, M. Soleimani, V. Nayyeri
{"title":"Broadband Radar Cross Section Reduction Using Generalized Phase-Polarization Cancellation","authors":"A. Ghadimi, Mohammad Shirmohammadkarimi, M. Soleimani, V. Nayyeri","doi":"10.23919/EuMC54642.2022.9924279","DOIUrl":"https://doi.org/10.23919/EuMC54642.2022.9924279","url":null,"abstract":"A new method is proposed to reduce the radar cross-section (RCS) by generalizing and combining phase cancellation and polarization conversion methods. In the proposed technique, similar to the polarization conversion method, only one unit-cell is used. The surface of the RCS reducer consists of arrays of this unit-cell in which each array is rotated 90 degrees relative to its side arrays. Unlike previous RCS reduction methods wherein the cells (in a periodic arrangement) either do not rotate the polarization of the reflected wave or rotate it 90 degrees, in the proposed generalized method, the unit-cells can rotate the polarization of the reflected wave arbitrarily. For this purpose, no symmetry is considered in the design of the unit-cell. The theory of the proposed RCS reduction method has been developed mathematically. Then, as a proof of concept, a unit-cell was designed using a pattern optimization method based on the pixelization of the cell's surface and applying a binary particle swarm optimization algorithm. The simulation results show that a 10-dB monostatic RCS reduction bandwidth is obtained from 2.85 GHz to 10.49 GHz (115% fractional bandwidth).","PeriodicalId":215592,"journal":{"name":"2022 52nd European Microwave Conference (EuMC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131687244","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}