COMSOL for Modelling of STW Devices
نویسنده
چکیده
Electroacoustic resonators employing surface acoustic waves (SAW) are commercially widely used in RF filters, low noise frequency sources as well as various sensors. In all of these applications the resonance quality factor appears to be a limiting performance factor. Quite often practical Q factors are not limited by the materials, but by design deficiencies, enabling energy loss outside the resonant cavity. Here we present a specific COMSOL-based approach helping the design of a specific class of SAW resonators, namely surface transverse weave (STW) resonators.
منابع مشابه
Implementation of a Paraxial Optical Propagation Method for Large Photonic Devices
While Comsol Multiphysics has great flexibility for modeling photonic devices, the computational demands of the general finite element method make it most suitable for small devices, on the order of a few microns in extent. Many integrated optical devices are much larger, having lengths of hundreds of microns or millimeters. A beam propagation method (BPM), which applies some simplifying assump...
متن کامل"Rapid Prototyping" of Biosensing Surface Plasmon Resonance Devices using COMSOL & Matlab Software
We present a Finite Element Method simulation procedure that allows rapid development of prototype devices comprising novel self-referenced interference SPR (surface plasmon resonance) biosensing microstructures. The procedure takes advantage of commercial Comsol Multiphysics and Matlab software and their bi-directional link.
متن کاملEarly Health Economic Modelling – Optimizing Development for Medical Device Developers?; Comment on “Problems and Promises of Health Technologies: The Role of Early Health Economic Modeling”
This commentary considers the positive and negative consequences of early economic modelling and explores potential future directions. Early economic modelling offers device manufacturers an opportunity to assess the potential value of an innovation at an early stage of development. Early modelling can direct resources into potentially viable technologies and reduce inv...
متن کاملEfficient Traveling-wave Accelerating Structure for Linear Accelerators
The shaped traveling-wave (STW) structure contains periodic structure of cavities with optimal shape and magnetic coupling operating in the forward travelingwave mode. The structure combines the advantages of conventional standing-wave (SW) and traveling-wave (TW) structures. It ensures high efficiency of the use of radio-frequency (RF) power for the particle acceleration inherent in the SW str...
متن کاملSimulating Organogenesis in COMSOL: Image-based Modeling
Mathematical Modelling has a long history in developmental biology. Advances in experimental techniques and computational algorithms now permit the development of increasingly more realistic models of organogenesis. In particular, 3D geometries of developing organs have recently become available. In this paper, we show how to use image-based data for simulations of organogenesis in COMSOL Multi...
متن کامل