Research

Current Projects

• Towards Automated Microelectronic Package Design
• Inhomogeneous Inclusion Design in Electromagnetic and Photonic Nanosystems
• Incorporating Statistical Variability into Circuit-Electromagnetic Modeling of RF and Analog Systems
• Enabling RF and Analog Synthesis Capability in Circuit-Electromagnetic Simulators
• Hybrid Numerical-Analytic Techniques for Power Integrity and Signal Integrity Modeling of Microelectronic Systems
• Cross Layer Circuit-Electromagnetic-Channel-Network Simulators for RFID System Design
• Design Tools and Insights for Low-Intensity Wireless Power Systems
• Discrete Green’s Function Methods for Accelerated and Novel Algebraic Algorithms on Graphs

Inhomogeneous Inclusion Design in Electromagnetic and Photonic Nanosystems

Student: Anirudha Siripuram

Funding: Department of Defense SMART Fellowship

Inhomogeneous inclusions such as graded material elements, coated particles, and magnetic elements in periodic or quasi-random arrangements can produce novel electromagnetic and photonic properties such as super-resolution focusing, phase reversal, wavelength contraction, controlled multiplexing, etc. In this work, hybrid finite element – boundary element methods are designed for this application. The FEM method is used to decouple the internal design for each particle from the external problem of coupling between particles, which is handled by the BEM. Effective surface impedance models are used as the transfer mechanism between FEM and BEM. This particular coupling method can facilitate definition of either surface impedance or surface admittance models allowing for added flexibility in combining modeled regions. The decoupled approach enables hierarchical design at both particle level and particulate distribution.

Key Papers and Presentations

A. Siripuram and V. Jandhyala, “Surface interaction matrices for boundary integral analysis of lossy transmission lines,” IEEE Transactions on Microwave Theory and Techniques, vol. 57, no. 2, pp. 374-382, February 2009. [pdf]