{"title":"A Broadband Absorptive Common-Mode Filter Based on SRR Dumbbell-Shaped DGS and Interdigital Capacitor","authors":"Jun-Yao Hou;Hong Zhou;Lin Peng;Feng-Yuan Sun","doi":"10.1109/TEMC.2026.3682767","DOIUrl":"https://doi.org/10.1109/TEMC.2026.3682767","url":null,"abstract":"With the development of the electronic information industry toward higher frequencies, traditional filters struggle to address the issue of high-frequency common-mode (CM) noise. To solve this problem, this article proposes a novel broadband absorptive common-mode filter (A-CMF) based on the split-ring resonator (SRR) dumbbell-shaped defected ground structure (DGS) and interdigital capacitor. The designed A-CMF consists of a third-order dumbbell-shaped DGS, with SRR structures at both ends of the dumbbell. Meanwhile, by adding an absorptive resistor at the differential signal input port, the reflected CM noise can be absorbed to reduce the impact of CM noise on adjacent circuits, which also effectively resolves the noise reflection problem existing in conventional common-mode filters. The absorptive filter features an ultra-wide absorption bandwidth; within the frequency range of 4.68–10.1 GHz, the maximum CM noise suppression level reaches 39.9 dB. Meanwhile, A-CMF circuit prototypes were fabricated, and the measurement results confirm the credibility and effectiveness of this design.","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"68 3","pages":"613-621"},"PeriodicalIF":2.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148514680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ruo-Yu Liang;Tian-Qi Wang;Xu-Dong Han;Ze-Ming Wu;Xiao-Chun Li;Jun-Fa Mao
{"title":"Physics-Informed Autoencoder for Radiation Source Reconstruction via Phaseless Single-Plane Near-Field Scanning","authors":"Ruo-Yu Liang;Tian-Qi Wang;Xu-Dong Han;Ze-Ming Wu;Xiao-Chun Li;Jun-Fa Mao","doi":"10.1109/TEMC.2026.3683987","DOIUrl":"https://doi.org/10.1109/TEMC.2026.3683987","url":null,"abstract":"An autoencoder (AE) is a classic machine learning (ML) method that has been widely applied to feature extraction in natural language processing and computer vision. In this work, a physics-informed AE (PIAE) is proposed for efficient and flexible radiation source reconstruction (RSR). The proposed PIAE has an encoder-decoder pair, in which the encoder converts measured near-field data into equivalent dipole moments and the decoder reconstructs the near field from the dipole moments. The encoder consists of a convolutional neural network, which reduces the dimensionality of the input field data by extracting key features, and a multilayer perceptron, which maps the reduced-dimensionality features to the dipole moments. The decoder analytically calculates the dipole radiation fields from the dipole moments. Finally, the proposed PIAE is trained by minimizing the loss between measured and reconstructed fields. Compared with conventional ML-based RSR methods, which usually need dual-plane phaseless data, the proposed PIAE only requires single-plane phaseless data, which significantly reduces measurement time. Moreover, the proposed PIAE directly outputs equivalent dipoles, enabling seamless integration into electromagnetic interference prediction workflows. Experimental results demonstrate that the proposed PIAE has both high accuracy and efficiency in RSR.","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"68 3","pages":"664-678"},"PeriodicalIF":2.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148515460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Novel Dual-Port All-Band Absorptive Common-Mode Filter With Differential-Mode Adjustable Attenuation Behaviors","authors":"Shipeng Zhao;Zhongbao Wang;Hongmei Liu;Shaojun Fang","doi":"10.1109/TEMC.2026.3685610","DOIUrl":"https://doi.org/10.1109/TEMC.2026.3685610","url":null,"abstract":"A novel dual-port all-band absorptive common-mode filter (A-CMF) is presented in this article, which can not only effectively absorb and suppress common-mode (CM) noise, but also achieve differential-mode (DM) adjustable attenuation behaviors. The differential transmission line is employed to realize CM noise suppression, and the parallel coupled line has the ability to regulate DM in-band matching characteristics. The open-circuited T-stub is loaded to introduce extra transmission zeros, thus achieving the sharp frequency selectivity of the DM signals. The DM attenuation level can be precisely adjusted by changing the value of the variable resistor. Most importantly, dual-port all-band CM absorption characteristics of the A-CMF can be realized by simply placing two pairs of CM absorptive resistors at the horizontally symmetrical plane without additional complex CM absorptive networks. The detailed mixed-mode <italic>S</i>-parameters are derived by the classical odd- and even-mode decomposition method, and parameter sweep analysis is used to analyze the working mechanism. To verify the viability, a microstrip prototype of the A-CMF operating at 2.45 GHz is manufactured and measured, which can effectively mitigate electromagnetic interference and improve electromagnetic compatibility performance.","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"68 3","pages":"603-612"},"PeriodicalIF":2.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148515463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Assessing the Probability of Detection in a Frequency-Selective EMD Detector: A Design Perspective","authors":"Xinting Xue;Tim Claeys;Davy Pissoort","doi":"10.1109/TEMC.2026.3659559","DOIUrl":"10.1109/TEMC.2026.3659559","url":null,"abstract":"Electronic devices exposed to complex electromagnetic environments can fail at specific frequencies. Early, frequency-selective detection of such “weak spots” is therefore desirable, whereas time-domain field probes provide only broadband indications and may over-trigger. This article presents a frequency-selective detector based on software-defined radio with field-programmable gate array acceleration, which transforms time-domain samples into spectra with reduced latency. The study focuses on narrowband burst electromagnetic disturbances and develops closed-form expressions for the probability of detection as a function of front-end bandwidth, frequency span, dwell time, hopping time, frequency resolution, and disturbance duration. The analysis is corroborated by Monte Carlo simulation and conducted measurements across 70 MHz–6 GHz. Results reveal how design choices and hardware latencies bound the attainable detection probability and delineate the hopping-limited regime. This article concludes with practical boundary conditions and design guidelines to maximize detection performance under resource constraints, offering a configurable alternative where high-end real-time analysers are impractical.","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"68 3","pages":"544-556"},"PeriodicalIF":2.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146160135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Shielded Planar Loop Magnetic Field Probe in PCB Technology for EMC Measurements and Calibration Method","authors":"Mario Filipašić;Martin Dadić","doi":"10.1109/TEMC.2026.3673091","DOIUrl":"10.1109/TEMC.2026.3673091","url":null,"abstract":"This article presents a multiturn design and characterization of a shielded planar loop magnetic field probe developed in printed circuit board (PCB) technology. Due to its compact structure and PCB-based design on a four-layer FR-4 substrate, the probe offers a cost-effective alternative to commercial magnetic field probes, while maintaining sufficient sensitivity, shielding, and frequency range of operation. The simulation and analytical results are validated with experimental measurements. Furthermore, a calibration setup consisting of Helmholtz coils and standard probe (antenna) method is shown and validated. Finally, a shielding effectiveness measurement method in Helmholtz coils is proposed and validated by measurements in a TEM cell.","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"68 3","pages":"506-521"},"PeriodicalIF":2.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11456099","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147507711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Corner-Optimized Asterisk-Shaped Composite Magnetic Shield for WPT Systems With Rectangular Coils","authors":"Zhongqi Li;Wenjuan Zhang;Zhongmei Wang;Ziyue Gan;Bin Li;Zheming Liao;Xian Zhang","doi":"10.1109/TEMC.2026.3667222","DOIUrl":"10.1109/TEMC.2026.3667222","url":null,"abstract":"Wireless power transfer (WPT) systems for electric vehicles confront considerable electromagnetic compatibility (EMC) challenges, as leakage magnetic fields can surpass safety limits, potentially interfering with electronics and raising health concerns. Conventional shielding approaches often involve a tradeoff between high power transfer efficiency and effective field suppression, frequently accompanied by high cost or limited performance. This article presents an asterisk-shaped composite magnetic shield that combines an active shielding system employing antiseries dual coils with a passive shield featuring an asterisk pattern of ferrite bars, achieving multidimensional leakage field suppression. The magnetic field distribution of the proposed structure is first analyzed using an analytical calculation method to optimize leakage flux. A system level mathematical model is then established, focusing on concurrently optimizing two key parameters: the peak leakage magnetic field and the power transfer efficiency. This model yields the optimal design parameters for the composite shield and coils. An experimental WPT platform is subsequently built based on these optimized parameters. Results confirm the structure’s effectiveness. It maintains a high power transfer efficiency of 95.88% under maximum lateral misalignment while reducing ferrite material usage by 34.01% . The leakage field on the target plane is suppressed below 27 <inline-formula><tex-math>$mu$</tex-math></inline-formula>T. The peak leakage flux density is reduced by 86.48% compared to an unshielded structure and by 70.84% compared to a coreless shielding structure, demonstrating substantially enhanced EMC performance.","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"68 3","pages":"592-602"},"PeriodicalIF":2.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147506538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"FDTD Computation of Ground-Level Electric Fields Generated by CIDs at Both Far and Close Ranges","authors":"Shota Ueda;Yoshihiro Baba;Vladimir A. Rakov","doi":"10.1109/TEMC.2026.3677069","DOIUrl":"10.1109/TEMC.2026.3677069","url":null,"abstract":"Using the finite-difference time-domain method for solving Maxwell's equations, we computed ground-level electric fields generated by compact intracloud discharges (CIDs) represented by an elevated vertical low-conductivity cylinder at both far (essentially radiation field) and close (other than radiation field components are significant) ranges. The cylinder had a length of about 2000 m, a radius of 100 m, the permittivity and permeability equal to those of vacuum, and the electric conductivity of about 10<sup>−5</sup> S/m. The cylinder was placed at an altitude of about 14 km above ground, energized at its midpoint, and resultant vertical electric fields on the ground surface were computed at horizontal distances of 2 to about 74 km. A reasonably good match with the corresponding waveforms (NBE #92) measured by (Karunarathne et al, 2016) was obtained for an adjusted excitation voltage waveform specified using the Heidler function with a 10-to-90% risetime of about 6 <italic>μ</i>s. The new results, extending our previous study (Ueda et al, 2025) to close distances, indicate that representation of CIDs by a low-conductivity cylinder allows one to reproduce the measured electric field signatures of CIDs at both far and close ranges.","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"68 3","pages":"778-780"},"PeriodicalIF":2.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147664547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jan Henninger;Tobias Leitgeb;David Pommerenke;Patrick Gsoels;Jan Hansen
{"title":"GHz Range Surrogate Modeling of Transistor Switching Spectra","authors":"Jan Henninger;Tobias Leitgeb;David Pommerenke;Patrick Gsoels;Jan Hansen","doi":"10.1109/TEMC.2026.3659739","DOIUrl":"10.1109/TEMC.2026.3659739","url":null,"abstract":"Wide bandgap semiconductor devices enable improvements in power electronics efficiency and power density. However, their fast switching characteristics exacerbate high frequency electromagnetic interference challenges. Radiated emission prediction methods typically employ measured or calculated common-mode signals as AC noise sources based on transistor switching waveforms. These approaches are limited in bandwidth and are dependent on operation points. This work presents a novel measurement based modeling methodology with a measurement setup using a Gaussian Process Regression (<inline-formula><tex-math>$mathcal {GPR}$</tex-math></inline-formula>) model to overcome the limitations by predicting the transistors drain voltage and source current in the frequency domain up to 1 GHz. We develop a setup to acquire the switching signals of a transistor in frequency domain across various operating conditions within a six dimensional input parameter space. Demonstrating in this article the simulation-based proof of concept of this approach, that a <inline-formula><tex-math>$mathcal {GPR}$</tex-math></inline-formula> model can predict the source current and the drain voltage of a transistor in frequency domain. The <inline-formula><tex-math>$mathcal {GPR}$</tex-math></inline-formula> model, which is trained in this work using simulation data, predicts the transistors source current in the frequency domain for unseen operating points with a maximum NRMSE of <inline-formula><tex-math>$2.1 ,%$</tex-math></inline-formula>. These results are establishing a novel approach for noise source modeling in radiated emission models of power converter systems.","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"68 3","pages":"741-749"},"PeriodicalIF":2.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146161433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Frequency Domain Dual-Channel Identification and Suppression Approach for Harmonic Interferences in Software-Defined Radio Systems","authors":"Siyu Xia;Qi Wu","doi":"10.1109/TEMC.2026.3667175","DOIUrl":"10.1109/TEMC.2026.3667175","url":null,"abstract":"Software-defined radio (SDR) has been widely adopted in single-antenna wireless systems owing to its reconfigurability in operating frequency, bandwidth, and modulation. However, SDR systems are vulnerable to both in-band and out-of-band electromagnetic interference, as they typically employ a zero-intermediate frequency architecture, which can degrade the quality of the target signals. To tackle this issue, this article presents an electromagnetic susceptibility model for two commercial SDR receivers. Furthermore, a dual-channel signal identification scheme is proposed to remove the interference signals in the digital domain. In an ideal laboratory environment, this method suppresses interference signals that are located in the harmonic frequencies of the local oscillator by ∼55 dB, including the single-tone, amplitude modulation, and quadrature phase shift keying signals. This approach can also identify the frequency of unknown EMS signals through dual-channel signal processing, which can partly solve the susceptibility issues commonly associated with commercial SDR receivers.","PeriodicalId":55012,"journal":{"name":"IEEE Transactions on Electromagnetic Compatibility","volume":"68 3","pages":"569-578"},"PeriodicalIF":2.6,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147380737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}