C7.3 - Optimizing Analog Front End Architectures for Enhanced SNR in Photoacoustic Imaging
- Event
- SMSI 2025
2025-05-06 - 2025-05-08
Nürnberg - Band
- Lectures
- Chapter
- C7 - Gas Sensing III
- Author(s)
- S. Kindorf, C. Weber, B. Bierer, J. Wöllenstein - Fraunhofer IPM, Freiburg (Germany)
- Pages
- 177 - 178
- DOI
- 10.5162/SMSI2025/C7.3
- ISBN
- 978-3-910600-06-5
- Price
- free
Abstract
In the field of photoacoustic imaging, systems with light sources with low pulse energy are currently being investigated. This study presents an analysis of different analog front-end architectures for such imaging, in particular their impact on the signal-to-noise ratio (SNR). The focus is on systems with high pulse repetition frequencies (PRF) and sampling rates of up to 50 Mega-Samples per second (MSPS). The architectures, which is tailored to Piezoelectric and Capacitive Micromachined Ultrasonic Transducer (PMUTs & CMUTs), include combinations of analog front-ends (AFE), preamplifiers, transimpedance amplifiers, and analog-to-digital converters (ADC). For testing purposes, the MUTs are simulated and set up with passive components.