Gaia Giubilei
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Gaia Giubilei has a total of 12 co-authors. Here are the top co-authors by number of shared publications:
Alberto Leotti
ST Microelectronics, Ang Mo Kio Industrial Park 2, Singapore
1 shared publication- Carla Maria Lazzari
STMicroelectronics 2 , Agrate Brianza 20864
1 shared publication David S. W. Choong
Institute of Microelectronics (IME), Agency for Science, Technology and Research (A*STAR), Fusionopolis, Singapore
1 shared publicationDomenico Giusti
ST Microelectronics, Agrate Brianza, Italy
1 shared publicationDuan J. Goh
Institute of Microelectronics (IME), Agency for Science, Technology and Research (A*STAR), Fusionopolis, Singapore
1 shared publication- Farah Ben Ayed
Northeastern University
1 shared publication
Latest Publications
- 28 May 2025
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Sensors Journal
- Vol. 26 (7) , 9408-9421
A Novel Multi-Angle Spatial Compounding Methodology Toward High-Resolution PMUT-Based Imaging
This work proposes an innovative multi-angle image compounding scheme using a Lead Zirconate Titanate (PZT) piezoelectric Micromachined Ultrasonic Transducer (PMUT) array towards clutter attenuation and speckle artifact suppression. Two 3× 3 mm2 dies of an 18-channel 1D-array PMUT, whose resonant frequency is 6.5 MHz, were employed for this demonstration. The proposed spatial compounding methodology is based on the aggregation of intermediate images from emitting plane wave at various directions (i.e., reconstructed at different angles) to enhance image quality by steering the beam of the phased array. In addition, a novel algorithm for crosstalk suppression is also proposed here based on Sliding Window Autocorrelation. The proposed signal processing pipeline is validated experimentally demonstrating an impressive performance with significant SNR gains of up to 20dB and highly accurate reflector localization considering a 3 mm-diameter reflector as close as 4 mm to the PMUT array. The impressive experimental results highlight the suitability of the proposed compounding methodology for medical imaging and industrial applications, e.g., NDT and structural health monitoring, underwater acoustics and sonar imaging.
- 28 May 2025
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Sensors Journal
- Vol. 26 (7) , 9408-9421
A Novel Multi-Angle Spatial Compounding Methodology Toward High-Resolution PMUT-Based Imaging
This work proposes an innovative multi-angle image compounding scheme using a Lead Zirconate Titanate (PZT) piezoelectric Micromachined Ultrasonic Transducer (PMUT) array towards clutter attenuation and speckle artifact suppression. Two 3× 3 mm2 dies of an 18-channel 1D-array PMUT, whose resonant frequency is 6.5 MHz, were employed for this demonstration. The proposed spatial compounding methodology is based on the aggregation of intermediate images from emitting plane wave at various directions (i.e., reconstructed at different angles) to enhance image quality by steering the beam of the phased array. In addition, a novel algorithm for crosstalk suppression is also proposed here based on Sliding Window Autocorrelation. The proposed signal processing pipeline is validated experimentally demonstrating an impressive performance with significant SNR gains of up to 20dB and highly accurate reflector localization considering a 3 mm-diameter reflector as close as 4 mm to the PMUT array. The impressive experimental results highlight the suitability of the proposed compounding methodology for medical imaging and industrial applications, e.g., NDT and structural health monitoring, underwater acoustics and sonar imaging.