Continuous-Time Equalizer with Independent Boost and Swing Loops
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Solution Overview
Problem
Conventional continuous-time adaptive equalizers face stability issues due to the simultaneous operation of dual feedback loops, leading to oscillations and increased complexity and power consumption, as they cannot guarantee accurate signal recovery without proper design and amplitude adjustments.
Innovation Solution
A continuous-time adaptive equalizer design utilizing two individual loops for boost control and swing control operations, where the swing control loop uses a clock signal or another data signal to maintain amplitude consistency, allowing both loops to operate independently and simultaneously without oscillations, reducing circuit complexity and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dual feedback loops are used for boost control and swing control in a conventional continuous-time adaptive equalizer, then signal recovery accuracy is improved, but circuit stability deteriorates due to oscillations and complexity increases
Solution Approach 1:
The patent divides the dual feedback loop system into two independent control loops: a boost control loop and a swing control loop. Each loop operates independently with its own feedback path, eliminating the oscillations that occur when loops are combined. This segmentation maintains signal recovery accuracy while ensuring circuit stability by preventing interference between the two control mechanisms.
2Measurement precision
If dual feedback loops are used for boost control and swing control, then signal recovery accuracy is improved, but device complexity increases
Solution Approach 1:
The patent segments the control system into two independent loops with separate feedback paths, which simplifies the overall circuit design compared to a complex intertwined dual-loop system. Each independent loop can be designed and analyzed separately, reducing the overall device complexity while maintaining the benefits of dual control for accurate signal recovery.
3Measurement precision
If dual feedback loops are used for boost control and swing control, then signal recovery accuracy is improved, but power consumption increases
Solution Approach 1:
The patent implements segmentation of the feedback system into two independent loops, which allows for more efficient power management. Each loop can be optimized independently for power consumption, and the independent operation eliminates the energy waste associated with oscillations and instability in combined loop systems, thereby maintaining accurate signal recovery with reduced overall power consumption.
Data Source
AI summary
An equalizer is disclosed. The equalizer includes a filter, configured to receive the first transmission signal, to perform a filtering operation on the first transmission signal according to a feedback signal to generate an output signal; a first slicer, configured to generate a first sliced signal according to a signal level of the output signal and to adjust an amplitude of the first sliced signal according to an amplitude control signal; a boost control module, configured to generate the feedback signal according to the output signal and the first sliced signal; and a control circuit, configured to receive a second transmission signal on the transmission line and to output the amplitude control signal according to an amplitude of the second transmission signal.