التفاصيل البيبلوغرافية
| العنوان: |
Passive Impedance-Matched Neural Recording Systems for Improved Signal Sensitivity |
| المؤلفون: |
Sk Yeahia Been Sayeed, Ghaleb Al Duhni, Hooman Vatan Navaz, John L. Volakis, Markondeya Raj Pulugurtha |
| المصدر: |
Sensors; Volume 23; Issue 14; Pages: 6441 |
| بيانات النشر: |
Multidisciplinary Digital Publishing Institute |
| سنة النشر: |
2023 |
| المجموعة: |
MDPI Open Access Publishing |
| مصطلحات موضوعية: |
neuro-signals, implanted antenna, passive sensor, miniaturized devices, multiband U-slot patch antenna, RF backscattering |
| الوصف: |
Wireless passive neural recording systems integrate sensory electrophysiological interfaces with a backscattering-based telemetry system. Despite the circuit simplicity and miniaturization with this topology, the high electrode–tissue impedance creates a major barrier to achieving high signal sensitivity and low telemetry power. In this paper, buffered impedance is utilized to address this limitation. The resulting passive telemetry-based wireless neural recording is implemented with thin flexible packages. Thus, the paper reports neural recording implants and integrator systems with three improved features: (1) passive high impedance matching with a simple buffer circuit, (2) a bypass capacitor to route the high frequency and improve mixer performance, and (3) system packaging with an integrated, flexible, biocompatible patch to capture the neural signal. The patch consists of a U-slot dual-band patch antenna that receives the transmitted power from the interrogator and backscatters the modulated carrier power at a different frequency. When the incoming power was 5–10 dBm, the neurosensor could communicate with the interrogator at a maximum distance of 5 cm. A biosignal as low as 80 µV peak was detected at the receiver. |
| نوع الوثيقة: |
text |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
Biomedical Sensors; https://dx.doi.org/10.3390/s23146441 |
| DOI: |
10.3390/s23146441 |
| الاتاحة: |
https://doi.org/10.3390/s23146441 |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: |
edsbas.6DB38072 |
| قاعدة البيانات: |
BASE |