A High Sensitivity Preamplifier for Quartz Tuning Forks in QEPAS (Quartz Enhanced PhotoAcoustic Spectroscopy) Applications
PBN-AR
Instytucja
Wydział Elektroniki i Technik Informacyjnych (Politechnika Warszawska)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
Sensors (30pkt w roku publikacji)
ISSN
1424-8220
EISSN
Wydawca
Multidisciplinary Digital Publishing Institute
DOI
Rok publikacji
2017
Numer zeszytu
11
Strony od-do
1-15
Numer tomu
17
Identyfikator DOI
Liczba arkuszy
0.7
Autorzy
(liczba autorów: 2)
Słowa kluczowe
en
quartz tuning fork
quartz enhanced photoacoustic spectroscopy
QEPAS sensor preamplifier design
transimpedance amplifier
Streszczenia
Język
en
Treść
All the preamplifiers dedicated for Quartz Enhanced PhotoAcoustic Spectroscopy (QEPAS) applications that have so far been reported in the literature have been based on operational amplifiers working in transimpedance configurations. Taking into consideration that QEPAS sensors are based on quartz tuning forks, and that quartz has a relatively high voltage constant and relatively low charge constant, it seems that a transimpedance amplifier is not an optimal solution. This paper describes the design of a quartz QEPAS sensor preamplifier, implemented with voltage amplifier configuration. Discussion of an electrical model of the circuit and preliminary measurements are presented. Both theoretical analysis and experiments show that use of the voltage configuration allows for a substantial increase of the output signal in comparison to the transimpedance circuit with the same tuning fork working in identical conditions. Assuming that the sensitivity of the QEPAS technique depends directly on the properties of the preamplifier, use of the voltage amplifier configuration should result in an increase of QEPAS sensitivity by one to two orders of magnitude.
Inne
System-identifier
WUT2338ecd4e2644d118684c8f92b685315
CrossrefMetadata from Crossref logo
Cytowania
Liczba prac cytujących tę pracę
Brak danych
Referencje
Liczba prac cytowanych przez tę pracę
Brak danych