Dr. Zhongkun Ma

The creep wave formulations originally intended to be applied to a Hertzian dipole radiation at the surface of lossy sphere is re-investigated for BAN (Body Area Network) channel modeling. The human torso is modeled as a dielectric or perfect electric conducting cylinder dependent on the investigated frequency. The main target aims at determining the propagation attenuation rate, which is important for BAN link budget calculation.

Maintain Cadence Virtuoso - ADE production code and regression test-case for Linux OS. GUI (C++/QT 4), RF data visualization and data post-processing tasks were heavily involved, such as fixing UI logic bugs, SHELL programming for command automation, converting XML datasheet to PDF datasheet by QT API, unit testing for numerical problems, code efficiency improvement and EVM (Error Vector Magnitude) estimation for wireless application.

Microwave, millimeter-wave and optical antennas/filters were investigated for wireless power transfer and local area network applications. Several novel antenna/filter structures were proposed. Simulation tools, such as CST, HFSS and Lumerical, are heavily involved to simulate antenna/filter structures. Extensive cross-validation between various tools was conducted. I was also responsible to maintain an in-house scientific electromagnetic simulation tool GUI (C++/C/Matlab/Octave).

Guide international Master students with computer network lab sections, which includes reviewing Open Systems Interconnection model protocols, routing table design for complex network environment and configuration on Cisco routers by command line.

Implement evolutionary computation algorithms (Generic Algorithm / Particle Swarm Optimization) for wide-band micro-strip antenna optimization . These numerical algorithms were successfully implemented in Matlab/C and integrated into a 20 year-old electromagnetic numerical simulation framework on Linux. A 3D current visualization tool (C++/QT 3/OpenGL) was implemented for data visualization. Some regression machine ( Gaussian Kernel) learning techniques were investigated for optimization acceleration.

OSD (On-Screen Display) source code generator for cross-platform embedded systems (C/C++/XML). The entire project was divided into three sub-tasks: 1) Define OSD specification in XML, which describes how OSD looks and works. 2) Implement low level C language API for the source code generator. 3) Implement the source code generator in C++, which can generate no compiling error C codes for embedded systems based on XML file.

complex physical phoneme modeling, numerical optimization technique, data processing and visualization

C/C++ programming , graphics user interface and computer network

numerical computation programming (OO, SHELL and script), graphics user interface and computer network protocol stack.