FDFD — The Finite-Difference Frequency-Domain Method
Course project for ECE 1252 "Introduction to Computational Electrodynamics" (Fall 2012): The FDFD method is derived in detail in 1D and simulation results are shown for driven and eigenmode simulations in 1D and 2D, including waveguide and resonator modes as well as reflection on an interface with dispersive media and precursors within.
Report (PDF, 1.4 MB) | Slides (PDF, 1.1 MB)
The Harmonic Balance Method (Group project, with Xingqi Zhang)
Course project for ECE 1254 "Modeling of Multiphysics Systems" (Spring 2013) on the harmonic balance method applied to nonlinear microwave circuits. In this project, we went beyond Modified Nodal Analysis (MNA) and became acquainted with the most common method used for nonlinear rf/microwave circuits (e.g. part of tools such as AWR Microwave Office and Agilent ADS). Rectifier circuits (half-wave and Delon voltage multiplier) as well as the Van der Pol oscillator demonstrate the working implementation (live demos not included). Note: The report was a last-minute submission... Reader discretion is advised. :-)
Report (PDF, 1.5 MB) | Slides (PDF, 1.5 MB)
Practical Feeds for Parabolic Reflector Antennas
Course project presentation for ECE 1229 "Advanced Antenna Theory" (Fall 2012): The first part contains a discussion of various practical feed antenna types, their ranges of application and pros/cons. In the second part, the working principle and design process of circularly polarized backfire helix feed antennas are presented. (I actually built this feed antenna while working at ICOM; it's installed on the roof of one of the buildings at HSR. Thanks to Simon Flepp for taking beautiful pictures of the installed antenna!)
