IEEE open journal of ultrasonics, ferroelectrics, and frequency control最新文献

Lamplight Stabilization in a Rb Atomic Clock for Improved Frequency Stability 提高频率稳定性的Rb原子钟的灯光稳定

IF 2.9

IEEE open journal of ultrasonics, ferroelectrics, and frequency control Pub Date : 2026-02-26 DOI: 10.1109/OJUFFC.2026.3665475

Michael Huang;Donovan Le;Andrew Householder;James Camparo

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2025 Index IEEE Open Journal of Ultrasonics, Ferroelectrics, and Frequency Control 《超声、铁电学与频率控制》

IF 2.9

IEEE open journal of ultrasonics, ferroelectrics, and frequency control Pub Date : 2026-02-24 DOI: 10.1109/OJUFFC.2026.3667021

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IEEE OPEN JOURNAL OF ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL Ieee超音波学、铁电学与频率控制开放期刊

IF 2.9

IEEE open journal of ultrasonics, ferroelectrics, and frequency control Pub Date : 2026-02-18 DOI: 10.1109/OJUFFC.2026.3664135

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Development of a Phase Transient Test Bench to Optimize a Cold-Atom Microwave Clock 优化冷原子微波时钟的相位瞬变试验台的研制

IF 2.9

IEEE open journal of ultrasonics, ferroelectrics, and frequency control Pub Date : 2026-02-13 DOI: 10.1109/OJUFFC.2026.3664792

Luc Archambault;Mathieu Guéridon;Cédric Majek;Luca Lorini;Arnaud Landragin;Bruno Desruelle;Bruno Pelle

{"title":"Development of a Phase Transient Test Bench to Optimize a Cold-Atom Microwave Clock","authors":"Luc Archambault;Mathieu Guéridon;Cédric Majek;Luca Lorini;Arnaud Landragin;Bruno Desruelle;Bruno Pelle","doi":"10.1109/OJUFFC.2026.3664792","DOIUrl":"https://doi.org/10.1109/OJUFFC.2026.3664792","url":null,"abstract":"MuClock is a commercial transportable microwave clock developed at Exail Quantum Systems, using rubidium atoms cooled by isotropic laser light. MuClock is comparable with typical hydrogen masers in terms of volume and long-term frequency stability, as it nominally reaches a fractional frequency stability of <inline-formula> <tex-math>$1times 10^{-15}$ </tex-math></inline-formula> in less than two days and maintains this level of performance over more than one month of integration time. The evaluation of several systematic frequency shifts is on-going. This article presents the impact of the frequency bias induced by microwave phase transients on the clock frequency stability and accuracy. Using an in-house designed test bench, the phase of the 6.8 GHz microwave clock signal is measured with a phase resolution close to 1 <inline-formula> <tex-math>$mu $ </tex-math></inline-formula>rad and a temporal resolution below 100 ns. It enables a thorough optimization of the sequence and a better control of each phase transient event, making their contributions to the overall frequency shift negligible. Phase peaks induced by electronic components operating in parallel are shifted in time so that their contributions become negligible compared with other frequency uncertainties. The accuracy of the associated systematic effect is evaluated at <inline-formula> <tex-math>$3times 10^{-15}$ </tex-math></inline-formula>.","PeriodicalId":73301,"journal":{"name":"IEEE open journal of ultrasonics, ferroelectrics, and frequency control","volume":"6 ","pages":"17-25"},"PeriodicalIF":2.9,"publicationDate":"2026-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11396005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147299546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

StaBle: Staggered PRF With DouBle Transmission for Increasing the Velocity Limit of High-Frame-Rate Vector Doppler Imaging 稳定：交错PRF与双传输提高速度限制的高帧率矢量多普勒成像

IF 2.9

IEEE open journal of ultrasonics, ferroelectrics, and frequency control Pub Date : 2026-02-12 DOI: 10.1109/OJUFFC.2026.3664322

Geraldi Wahyulaksana;Colin K. L. Phoon;Glenn I. Fishman;Jeffrey A. Ketterling

{"title":"StaBle: Staggered PRF With DouBle Transmission for Increasing the Velocity Limit of High-Frame-Rate Vector Doppler Imaging","authors":"Geraldi Wahyulaksana;Colin K. L. Phoon;Glenn I. Fishman;Jeffrey A. Ketterling","doi":"10.1109/OJUFFC.2026.3664322","DOIUrl":"https://doi.org/10.1109/OJUFFC.2026.3664322","url":null,"abstract":"Vector Doppler Imaging (VDI) addresses the limitations of traditional Doppler imaging by measuring blood flow in axial and lateral directions but will produce incorrect results if aliasing is present. Aliasing becomes more likely when using high transmit frequencies such as in small animal cardiac applications. The use of multiple transmit angles decreases the Nyquist limit, which further increases the likelihood of aliasing. A new transmission scheme, termed StaBle, is proposed to increase the Nyquist limit of conventional sequential angle VDI by multiple fold. StaBle combines the velocity limit extension of staggered multiple pulse repetition frequency (PRF) with a double transmission scheme. With three transmit angles and two PRFs, StaBle was able to achieve a 6-12 times higher velocity limit compared to sequential angle VDI. Simulation and phantom spinning disk experiments were conducted to evaluate StaBle’s performance. The simulation results showed a normalized root-mean-squared error of less than 5% compared to an ideal vector field in both axial and lateral directions. Phantom results showed a 9-fold improvement in detecting peak axial velocity over sequential three angle VDI. The ability of StaBle to obtain an unaliased vector field in vivo was demonstrated by imaging a mouse left ventricle where the Doppler signal was corrupted by aliasing artifacts using just a double transmit scheme. The resolved estimated vector velocity showed consistent beat-to-beat variation in velocity, confirming StaBle’s robustness under realistic conditions and its potential for use in investigative studies.","PeriodicalId":73301,"journal":{"name":"IEEE open journal of ultrasonics, ferroelectrics, and frequency control","volume":"6 ","pages":"26-37"},"PeriodicalIF":2.9,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11395288","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147299751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Improved Air-Coupled Ultrasonic Transmission Using Pulse Compression 利用脉冲压缩改进空气耦合超声传输

IF 2.9

IEEE open journal of ultrasonics, ferroelectrics, and frequency control Pub Date : 2026-01-28 DOI: 10.1109/OJUFFC.2026.3659047

Mate Gaal;Pascal Wernicke

{"title":"Improved Air-Coupled Ultrasonic Transmission Using Pulse Compression","authors":"Mate Gaal;Pascal Wernicke","doi":"10.1109/OJUFFC.2026.3659047","DOIUrl":"https://doi.org/10.1109/OJUFFC.2026.3659047","url":null,"abstract":"Air-coupled ultrasonic testing avoids contamination and reduces maintenance costs, but suffers from poor signal-to-noise ratio (SNR) due to impedance mismatch. Rather than developing new transducers, this study improves SNR through signal processing by adapting pulse compression from radar. We propose a method using unipolar square pulses to make pulse compression compatible with non-linear transducers such as ferroelectrets and thermoacoustic emitters. Instead of relying on analytical models, a reference transmission measurement served as the matched filter, simplifying implementation and ensuring adaptability across transducer types. We evaluated unipolar coded excitation and pulse compression on ultrasonic transmission through a 25 mm polyvinyl chloride plate, varying code length and pulse delay. Significant SNR gains were observed across transducers, particularly with longer delays. These results confirm that pulse compression enhances peak localization and supports testing under low-SNR conditions. Further experiments showed that pulse compression remains effective despite side lobe overlap and noise, provided the pulse delay is chosen appropriately. Although SNR prediction is limited by electrical and acoustic interference, the method consistently improves detection. Overall, the results demonstrate the feasibility of unipolar excitation coding for pulse compression in air-coupled ultrasonic testing, with practical value for thick or attenuating materials.","PeriodicalId":73301,"journal":{"name":"IEEE open journal of ultrasonics, ferroelectrics, and frequency control","volume":"6 ","pages":"9-16"},"PeriodicalIF":2.9,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11366931","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146162234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Guest Editorial: Special Section on Air-Coupled Ultrasound 嘉宾评论：空气耦合超声专题

IF 2.9

IEEE open journal of ultrasonics, ferroelectrics, and frequency control Pub Date : 2026-01-21 DOI: 10.1109/OJUFFC.2026.3656857

Mate Gaal;Tomás Gómez Álvarez-Arenas

引用次数: 0

Decreased Ultrasonic Wave Velocity in Bones of Ovariectomized and Spontaneous-Menopause Mice 卵巢切除和自然绝经小鼠骨内超声波速降低

IF 2.9

IEEE open journal of ultrasonics, ferroelectrics, and frequency control Pub Date : 2026-01-20 DOI: 10.1109/OJUFFC.2026.3656109

Taiga Wada;Shouta Kitajima;Yoshifumi Tsuchiya;Mami Matsukawa

{"title":"Decreased Ultrasonic Wave Velocity in Bones of Ovariectomized and Spontaneous-Menopause Mice","authors":"Taiga Wada;Shouta Kitajima;Yoshifumi Tsuchiya;Mami Matsukawa","doi":"10.1109/OJUFFC.2026.3656109","DOIUrl":"https://doi.org/10.1109/OJUFFC.2026.3656109","url":null,"abstract":"Osteoporosis fractures are a significant social problem. Despite having sufficient bone mineral density (BMD), postmenopausal women frequently experience bone fractures. This study investigated the effect of estrogen reduction on bone elasticity by comparing young female C57BL/6J mice that underwent either Sham or ovariectomized (OVX) surgery. Bone properties in two-year-old mice (post-senescence period: spontaneous menopause (SM)) were also examined. OVX mice were consistently heavier than Sham mice and showed increased visceral fat. Longitudinal wave velocities in tibia bones of these groups were evaluated using a micro-Brillouin scattering technique (<inline-formula> <tex-math>$mu $ </tex-math></inline-formula>-BS). OVX mice bones exhibited a significant decrease in velocity (2.0–2.3% lower) at 24 weeks after surgery. The velocities in the tibia bones decreased more significantly in SM mice than in OVX mice. These findings highlight the effects of estrogen deficiency on bone elasticity in young mice during growth and identify additional age-related changes.","PeriodicalId":73301,"journal":{"name":"IEEE open journal of ultrasonics, ferroelectrics, and frequency control","volume":"6 ","pages":"3-8"},"PeriodicalIF":2.9,"publicationDate":"2026-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11359200","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146162211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Comparison of Triangulation and CNN-Based Acoustic Source Localization on Carbon Fibre Reinforced Composites Considering the Signal-to-Noise Ratio 考虑信噪比的碳纤维增强复合材料声源三角定位与cnn定位比较

IF 2.9

IEEE open journal of ultrasonics, ferroelectrics, and frequency control Pub Date : 2026-01-12 DOI: 10.1109/OJUFFC.2026.3652600

Felix CORDES;Julia Scholtyssek;Karl-Ludwig Krieger

{"title":"Comparison of Triangulation and CNN-Based Acoustic Source Localization on Carbon Fibre Reinforced Composites Considering the Signal-to-Noise Ratio","authors":"Felix CORDES;Julia Scholtyssek;Karl-Ludwig Krieger","doi":"10.1109/OJUFFC.2026.3652600","DOIUrl":"https://doi.org/10.1109/OJUFFC.2026.3652600","url":null,"abstract":"Carbon fibre reinforced composites are being used in more and more areas of application, for example in hydrogen storage tanks. In addition to structural-mechanical advantages, these materials also have disadvantages, such as susceptibility to mechanical damage. This makes structural monitoring advisable in safety-critical applications. In addition to the detection of damage, the localization of the source of the acoustic signal, respectively the damage, is a central component. Signal localization on fibre composites is a major challenge, due to the high direction dependency of the speed of acoustic signals. Measurement inaccuracies and low signal strengths, especially in noisy environments, lead to high localization errors when locating the source based on the difference in signal arrival times in a sensor network. When using triangulation-based methods, it is even possible that several plausible signal sources are identified. This article therefore analyses the extent to which localization accuracy is affected by a reduction in the signal-to-noise ratio. Two different localization methods are used for the investigations and their accuracy is evaluated when the signal-to-noise ratio is reduced. These are, on the one hand, classic triangulation, adapted to an anisotropic material. On the other hand, localization via a convolutional neural network is investigated. For the investigations, acoustic signals with different signal-to-noise ratios are applied to a carbon fibre prepreg plate in three series of measurements and localized using a sensor grid. In addition to the effect of the signal-to-noise ratio, the effect of the source position relative to the sensor grid is investigated.","PeriodicalId":73301,"journal":{"name":"IEEE open journal of ultrasonics, ferroelectrics, and frequency control","volume":"5 ","pages":"292-300"},"PeriodicalIF":2.9,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11345239","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146082284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of Synchronized Swept-Sine Technique in CMUT Characterization Using Laser-Doppler Vibrometry 同步扫描正弦技术在激光多普勒振动仪CMUT表征中的应用

IF 2.9

IEEE open journal of ultrasonics, ferroelectrics, and frequency control Pub Date : 2026-01-01 Epub Date: 2026-03-18 DOI: 10.1109/OJUFFC.2026.3694078

Tönnis Trittler;Sören Köble;Julian Kober;Marco Kircher;Johannes Fankhänel;Cornelius Kühnöl;Paul-Henry Franz Koop;Richard Nauber;Henning Heuer;Moritz Herzog

{"title":"Application of Synchronized Swept-Sine Technique in CMUT Characterization Using Laser-Doppler Vibrometry","authors":"Tönnis Trittler;Sören Köble;Julian Kober;Marco Kircher;Johannes Fankhänel;Cornelius Kühnöl;Paul-Henry Franz Koop;Richard Nauber;Henning Heuer;Moritz Herzog","doi":"10.1109/OJUFFC.2026.3694078","DOIUrl":"https://doi.org/10.1109/OJUFFC.2026.3694078","url":null,"abstract":"Capacitive Micromachined Ultrasonic Transducers (CMUTs) provide a path to mass-produced cost-efficient transducers for clinical imaging and wearables. However, their inherent nonlinearities, especially at high excitation voltages, can degrade performance and image quality. This requires fast non-contact characterization of individual CMUT transducers directly on a wafer. This work demonstrates the first application of the Synchronized Swept-Sine Technique (SST) in Laser-Doppler Vibrometry (LDV) for comprehensive characterization of CMUTs on individual cell level. In the SST, the extraction of both linear and nonlinear harmonic transfer functions from a single measurement is possible by excitation with an exponential chirp and application of an inverse filter. Using a scanning LDV system, we characterized individual cells in a 64-cell CMUT array (<inline-formula> <tex-math>$50~{mu }$ </tex-math></inline-formula> m diameter) across a 1...16 MHz frequency range in both air and oil. The method reveals quantitative spectral data, including resonance at 6.4 MHz and second-harmonic distortion at −11.8 dB relative to the fundamental for the investigated CMUT. Results demonstrate significant cell-to-cell variations in harmonic transfer functions and reveal nonlinear behavior even in non-excited cells due to inter-cell acoustic coupling. These findings establish SST-LDV as a powerful complementary technique to electrical impedance measurements. The method provides spatially resolved mechanical insights that are crucial for the development of CMUTs, model validation, and potentially, quality control in high-throughput MEMS manufacturing.","PeriodicalId":73301,"journal":{"name":"IEEE open journal of ultrasonics, ferroelectrics, and frequency control","volume":"6 ","pages":"156-162"},"PeriodicalIF":2.9,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11522980","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148003662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0