Master’s Thesis

Master’s Thesis

Electromagnetic Simulation and Optimization of T Coils for High Speed Interconnects

Ref. 2026_007

High speed wireline communication systems require broadband signal coupling with minimal distortion. T coils are widely used as inductive peaking networks to extend bandwidth, improve rise times, and enhance the overall performance of high speed interconnects. Because their behavior is strongly influenced by parasitics and layout dependent coupling effects, accurate electromagnetic (EM) simulation is essential for reliable designs.

In this project, the layout and EM characterization of T coil structures intended for multi GHz interconnects is investigated. Starting from fundamental theory, the student will analyze how T coils improve bandwidth and compensate for limited driver strength or capacitive loading. The main focus is on modeling these structures using 2.5D and 3D EM simulation tools to understand the impact of metal geometry, coupling, substrate effects, and high frequency parasitics.

The objective of the project is to develop a solid understanding of T coil operation and their application in high speed signaling. Various T coil layout topologies suitable for integration in a modern CMOS process are created, followed by performing EM simulations to extract high frequency models (S parameters, RLC parasitics, coupling coefficients). Geometry and layout constraints are optimized to maximize bandwidth extension while minimizing loss and mismatch.

Prior coursework in RF circuits, high speed digital design, or electromagnetic fields is helpful but not strictly required. The project may be undertaken as a Master’s thesis, or in special cases, as a Bachelor’s thesis. Please note that paid internships are not available for this project.





Diversity & Work Environment

IBM is committed to fostering diversity and inclusion in the workplace. You will join an open, multicultural research environment that values different perspectives and supports flexible working arrangements. Our goal is to help all genders and backgrounds thrive professionally while maintaining a healthy work-life balance.

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