1. Adjustable RF delay-line for synchronization of ring cavities
Situation: Synchronization of ring cavities requires precision delay of analog signals. Currently a long physical wire is used, but accuracy, phase delay and handability suffer.
Target: Electronically adjustable variable delay of analog signals within a 50 system environment
Mimic the delay of analog RF signals caused by wire length from cm to several meters (300ps to 2.5us)
High phase fidelity required (< 500ps), low jitter (<500ps)
Signal spec: 200kHz-25MHz (Sinusoidal), 1V, 50MHz/s change rate
Approach:
Investigation of different concepts and their applicability (e.g. Sample&Hold with Time-to-Digital Converters, Voltage-to-Delay elements, Adaptive Unity-gain buffers), extensive simulations
Low noise / jitter design required (e.g. current mode approach)
Depending on found solution(s), hardware implementation in a suitable technology (preferred target: High-Speed ASIC (either advanced CMOS (65nm) or SiGe BiCMOS (0.25u)
Prototype design, implementation and measurement
8. Okt 2012 | TU Darmstadt | FG Integrierte Elektronische Systeme | Prof. K. Hofmann
24. Juni 2018 |