Research

Completed 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
• Electromagnetic-circuit Maxwell-Kirchoff simulation methodologies
• Multilevel tree-based fast algorithms static, quasi-static, and full-wave electromagnetic systems
  
• Boundary element variations for modeling lossy conductors and dielectrics in microelectronics
  
• Parallel and distributed fast multilevel solvers for integral equation electromagnetic solvers
  
• Fast multipole variations for molecular dynamics and multiphysics applications
  
• CAD for mixed-signal systems and chip-package systems
  
• Time-domain integral equation (TDIE) methods for circuit-EM simulation of microelectronic systems
  
• Mixed-physics CAD for microfluidic systems
  
• Surface-volume time-frequency PEEC methods for microelectronic simulation
  
• Frontend design for advanced circuit-EM solvers for microelectronics applications

Enabling RF and Analog Synthesis Capability in Circuit-Electromagnetic Simulators

Students: Ritochit Chakraborty and Arun Sathanur

Funding: National Science Foundation and Intel Fellowship

RF and Analog synthesis necessitates multiple simulation passes in a high-dimensional parameter space. With the necessary inclusion of passives such as inductors, transformers, filters, and antennas, there is a significant requirement for both electromagnetic modeling and circuit modeling in these simulation passes. This work focuses on the need for integrated circuit-electromagnetic optimization and rapid parametric modeling.
Our proposed methodology for active-passive co-synthesis of RF circuits has shown promising results with respect to sizing of RF circuits. Retention of full-wave Maxwell accuracy for on-chip passives is a major breakthrough since previous approaches undermine the importance of electromagnetic modeling of passives. Development of broadband parametric macromodels of on-chip passives using a state-of-the-art curve-fitting and regression technique are salient features of the co-synthesis approach.

Key Papers and Presentations

V. Jandhyala, A. Sathanur, and R. Chakraborty, “Towards RF system design and synthesis under manufacturing and statistical constraints using full-wave solvers,” to be presented at the International Conference on Electromagnetics in Advanced Applications (ICEAA), Torino, Italy, September 2009.

V. Jandhyala, “A framework for optimization and statistical analysis of on-chip passive devices” invited, special session on computational EM methods of significantly reduced complexity for high-speed IC design, invited, Proceedings of the ACES Applied Computational Electromagnetics Symposium, Monterey, CA, March 2009.