Ranko Sredojevic

Learn More
—This paper analyzes the energy efficiency of different transmit equalizer driver topologies. Dynamic impedance modulation is found to be the most energy-efficient mechanism for transmit pre-emphasis, when compared with impedance-maintaining current and voltage-mode drivers. The equalizing transmitter is implemented as a digital push–pull(More)
—This paper presents a system identification technique for generating stable compact models of typical analog circuit blocks in radio frequency systems. The identification procedure is based on minimizing the model error over a given training data set subject to an incremental stability constraint, which is formulated as a semidefinite optimization problem.(More)
– Digital push-pull impedance-modulating (RM) pre-emphasis driver overcomes the power overhead of equalization in voltage-mode (VM) drivers, improving the output stage efficiency ~2-3x. A compact, fully-digital RAM-DAC implementation with pattern lookup compensates both duty-cycle distortion and driver nonlinearity, while providing a programmable(More)
Connecting system-level performance models with circuit information has been a long-standing problem in analog/mixed-signal front-ends, like radios and high-speed links. High-speed links are particularly hard to analyze because of the complex interplay of device/circuit parasitics and channel filtering operation. In this paper we introduce(More)
  • 1