Design of a Novel Very-Low Input Capacitance High-Bandwidth Buffer for a Biomass Sensor
| Title | Design of a Novel Very-Low Input Capacitance High-Bandwidth Buffer for a Biomass Sensor |
| Publication Type | Journal Article |
| Year of Publication | 2025 |
| Authors | Amor F, Haberman MA, Jamilis M, Guerrero FN, De Battista H |
| Journal | IEEE Sensors Journal |
| Volume | 25 |
| Pagination | 655-662 |
| Keywords | Bandwidth, Biosensors, Capacitance, Capacitance measurement, Dielectrics, Hands, High-bandwidth buffer, Mathematical models, nonimmersed biomass sensor, noninvasive dielectric spectroscopy, power supply bootstrapping, Printed circuits, Topology, very-low input capacitance buffer, voltage measurement |
| Abstract | In this work, a high-bandwidth very-low input capacitance original topology buffer was designed. The proposed buffer circuitry is conceived as part of a novel noninvasive nonimmersed real-time dielectric spectroscopy biomass sensor. Both a circuital-based simulation model and an experimental printed circuit board (PCB) prototype were implemented and successfully tested. The buffer effective parasitic input capacitance was lowered to a 2% of its original value by means of power supply bootstrapping. This improvement will allow performing differential voltage measurements with the required accuracy and without compromising the necessary bandwidth. |
| DOI | 10.1109/JSEN.2024.3486534 |
