FEM Study on the Effect of Metallic Interdigital Transducers on Surface Acoustic Wave(SAW) Velocity in SAW Devices
A. K. Namdeo, and H. B. Nemade
Department of Electronics and Electrical Engineering
Indian Institute of Technology Guwahati
In this paper, we present study on the mass loading effect of the interdigital transducer (IDT) on surface acoustic wave (SAW) velocity in SAW devices, using COMSOL Multiphysics. We have simulated a one port SAW resonator made on YZ lithium niobate substrate and investigated the reduction of SAW velocity caused by the mass loading of aluminum IDT fabricated over the substrate, using finite ...
P. Kakria, A. Marwaha, and M. S. Manna
Electronics & Communication department, SLIET Longowal, Distt. Sangrur, Punjab, India.
Electrical & Instrumentation department, SLIET Longowal, Distt. Sangrur, Punjab, India.
In this paper, the attempt has been made to design and analyze single strip shielded Microstrip line with capacitive coupling. The main objective is to compute the capacitance per unit length of shielded Microstrip line using Finite Element technique. The computational and simulation work has been carried out with the help of FEM based COMSOL Multiphysics software. The shielded Microstrip ...
S. A. Selvin, N. B. Moorthy, G. Anju, and M. Alagappan
PSG College of Technology
Tamil Nadu, India
This paper chalks out the design and performance of a piezo resistive surface micro machined circular diaphragm based pressure sensor. A structural deformation in the piezo resistive nano structure placed above the diaphragm will result in varied current density, which is in direct accordance with the applied pressure. This effect relies on the principle of piezo resistivity and employing a nano ...
V. Vadde, and B. Lakshmi G
In this paper, we develop and analyze a standard piezoacoustic Tonpilz-transducer model for underwater acoustics in Comsol by addressing the attendant piezoelectric and pressure acoustic multiphysics phenomena. Transducer properties that are studied and characterized are the center frequency, bandwidth, linearity, sensitivity, and noise figure. In an effort to miniaturize the transducer, a ...
R. C. Thiagarajan
ATOA Scientific Technologies Private Limited, Bangalore, India
Conductive Composites such as carbon fiber reinforced composites are increasingly used in safety critical aerospace applications. The catastrophic macro structural failure of composite structures initiates from a micro level failure event such as fiber breaks. The ability to detect damage early on can improve the safety level and reliability of composite structures. A multilevel self-sensing ...
S. Sohail, D. Das, S. Das, and K. Biswas
Electrical Engineering Department, IIT Kharagpur
School of Medical Science and Technology, IIT Kharagpur
Digital microfluidic system based on EWOD (electrowetting-on-dielectric) technology can perform different fluidic operations on the same electrode array by simply modifying control software. One of the major challenges in EWOD device is to address each electrode individually in M x N array of electrode using simple fabrication architecture without compromising in system performance. The ...
K. Dusarlapudi, B. K. Nashine, D. Bai, and C. S. Babu
KL University, Vaddeswaram, Guntur, Andhra Pradesh, India
E.D&S.S, IGCAR Kalpakkam, India
VIT, Vellore, India
Thermocouples have been used for measurement of temperature ever since the discovery of Seebeck effect. Though the voltage output of a thermocouple is a function of the temperature difference between hot and cold junctions, the response time and the magnitude of voltage depends on the geometry and material of the thermocouple also. This report deals with the study of the mineral-insulted ...
Heat Generation from Dielectric Loss, Internal Heat Generation and Vibration in COMSOL4.2 Multiphysics
T. R. Jeba, B. Vins, and V. Ramamoorthy
This paper presents a FEA approach to estimate temperature rise and thermal stress experienced in PZT/Solid structure due to internal heat generation and dynamic excitation. The power dissipative density consumed by structural damping of the mass structure, internal heat generation due to applied voltage and dielectric loss of the PZT material is first determined. The dissipative power is then ...
M. Manna, and S. Miglani
This paper presents the Finite Element Method technique for predicting performance of Induction motor having Electric and Magnetic asymmetry for rotor cage due to some broken rotor bars. The motor parameters like magnetic vector potential, flux density, surface currents have been determined very precisely by carrying out two dimensional quasi static, transient analysis and by using one of the ...
B. Mishra, M. P. S. Naidu, J. Raj, and Z. C. Alex
This paper presents a novel design of a RF MEMS Switch. The switch is a capacitive type, which is actuated by an electrostatic force. The structure of the switch consists of a CPW (coplanar waveguides) transmission lines and a suspended membrane. The modelling of switch is done using COMSOL software and RF characteristics is found out by using CST software.