Development of android apps for circuit and electromagnetic analysis

• Main Author: Zhang, Yuepeng
• Other Authors: Tan Eng Leong
• Format: Thesis-Master by Coursework
• Language: English
• Published: Nanyang Technological University 2024
• Subjects: Engineering; Electromagnetism; Step-by-step solution; Flutter; Mobile application
• Online Access: https://hdl.handle.net/10356/178236
• Institution: Nanyang Technological University

Education plays an important role during people's development, but not everyone is able to achieve their goals after studying, and some of them are caused by the lack of learning materials to help them to understand topics. Although there are already many approaches implementing massive open online course (MOOC), Virtual reality (VR) and augmented reality (AR) technologies, and artificial intelligence (AI) enhanced chatbot, drawbacks from them are obvious. Mobile applications should be designed for students to study professional topics in their major. During this project, Dart programming language and Flutter user-interface framework are used. This combination allows one copy of code and full deployment on mobile devices including Android and iOS. To perform mathematical operations and display, libraries are done. Additional libraries for steps demonstration and variable exchanging are added. Filter is an important topic in microwave. An application to illustrate steps for designing Butterworth and Chebyshev filters is completed. It has been validated by comparison to QucsStudio, an electronic design automation (EDA) software. The electrostatic field is a fundamental topic in electromagnetism, and an application is completed to determine the electric field at specific point for some charge distributions. The results are compared to practice questions on textbook. Polarization and Poynting vectors are key terms for electromagnetic wave, and an application for this topic has been completed. It is able to transform between electric field and magnetic field in time-varying and phasor form, and can determine the type of polarization and handedness and calculate time-averaged and instantaneous Poynting vectors. Future works to improve user experience and to include more topics are suggested.