Equivalent circuit consideration of frequency-shift-type acceleration sensor

2018 ◽  
Vol 57 (7S1) ◽  
pp. 07LD08
Author(s):  
Yoshifumi Sasaki ◽  
Sumio Sugawara ◽  
Subaru Kudo
Keyword(s):  
Frequency Shift ◽  
Equivalent Circuit ◽  
Acceleration Sensor ◽  
Shift Type

scholarly journals Interpretation of Quartz Crystal Microbalance Behavior with Viscous Film Using a Mason Equivalent Circuit

Chemosensors ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 9
Author(s):  
Sawit Na Songkhla ◽  
Takamichi Nakamoto
Keyword(s):  
Frequency Shift ◽  
Equivalent Circuit ◽  
Quartz Crystal ◽  
Single Layer ◽  
Frequency Change ◽  
Sensing Applications ◽  
Sensitivity And Selectivity ◽  
Quartz Crystal Microbalances ◽  
Negative Frequency Shift ◽  
Positive Frequency

In odor sensing based on Quartz Crystal Microbalances (QCMs), the sensing film is crucial for both sensor sensitivity and selectivity. The typical response of the QCM due to sorption is a negative frequency shift. However, in some cases, the sorption causes a positive frequency shift, and then, Sauerbrey’s equation and Kanazawa’s equation cannot be applied to this situation. We model the QCM response with a Mason equivalent circuit. The model approximates a single layer of a uniform viscous coating on the QCM. The simulation of the equation circuit shows the possibility of the positive frequency change when the sorption occurs, which is the situation we find in some of the odor sensing applications. We measured the QCM frequency and resistance using the Vector Network Analyzer (VNWA). The QCMs were coated with glycerol, PEG2000, and PEG20M. To simulate odor exposure, a microdispenser was used to deposit the water. A positive frequency shift was observed in the case of PEG2000, and a negative frequency change was obtained for PEG20M. These results can be explained by the Mason equivalent circuit, with the assumption that when the film is exposed to water, its thickness increases and its viscosity decreases.

Equivalent circuit for a GaAs CCD

1993 ◽  
Vol 140 (6) ◽  
pp. 377
Author(s):  
S. Pennathur ◽  
H.H.L. Kwok
Keyword(s):  
Equivalent Circuit

On a new method in spectroscopy : laser-induced frequency shift of self-excited ion oscillations

1992 ◽  
Vol 2 (7) ◽  
pp. 1367-1372
Author(s):  
R. C. Bobulescu ◽  
M. A. Brǎtescu ◽  
C. Stǎnciulescu ◽  
G. Musa
Keyword(s):  
Frequency Shift ◽  
New Method ◽  
Spectroscopy Laser

Linear Equivalent Circuit and Current Sources Model Including Separation Resistances in the Ground Connection for Multiple Power-Supply Pin LSI

2010 ◽  
Vol 130 (11) ◽  
pp. 1897-1906
Author(s):  
Yoshiyuki Saito ◽  
Masakatsu Yasuhara ◽  
Yuichi Mabuchi ◽  
Tohlu Matsushima ◽  
Takashi Hisakado ◽  
...  
Keyword(s):  
Equivalent Circuit ◽  
Power Supply ◽  
Multiple Power

Recent Topics of Loss Analysis of Power Magnetics Devices based on Equivalent Circuit Method

2018 ◽  
Vol 138 (12) ◽  
pp. 585-591
Author(s):  
Kenji Nakamura ◽  
Takashi Morita ◽  
Yukihiro Yoshida
Keyword(s):  
Equivalent Circuit ◽  
Loss Analysis ◽  
Equivalent Circuit Method ◽  
Power Magnetics
Sign in / Sign up

Export Citation Format

Share Document