Mobile Teaching and Learning of Coupled-Line Structures: The multiple-1D coupled-line finite-difference time-domain method

Abstract

In this article, mobile teaching and learning of coupled line structures using multiple one-dimensional coupled line finite-difference time-domain (M1-D CL-FDTD) method are presented. The formulation of M1-D CL-FDTD method applicable for coupled line structures is provided. The method bypasses the more computationally intensive full-wave 3-D method and it is well-suited for implementation on mobile devices. Several mobile apps are developed to provide interactive visualization of EM wave propagation in coupled line structures. Such visualization allows the underlying resonating and coupling mechanisms to be elucidated clearly and improves students' understanding of coupled line theories. Mobile teaching and learning of various coupled line structures including coupled transmission lines, coupled line bandpass filter, directional coupler and branch line coupler are demonstrated and discussed.

[Retracted] Application of Mobile Technology in College English Vocabulary Teaching

“…rough the interaction between them, the user layer is designed. e main functions of this layer are user login, system information setting, browsing English vocabulary resources, uploading English vocabulary homework, and other functions [11]. e module records the user's access behavior and forms log data for integration.…”