Magnetically Coupled Oscillators for Clock Synchronization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Integrated circuits face errors due to differences in clock signal arrival times, leading to increased power consumption and voltage drops, as traditional clock trees struggle to synchronize oscillating signals effectively, especially at higher frequencies.
Innovation Solution
Implementing two or more oscillators with magnetic coupling, master-slave fine-tuning, and pulse injection mechanisms to synchronize oscillating signals, eliminating the need for a clock tree and minimizing frequency or phase differences among the oscillators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clock tree is used to distribute a common clock signal, then synchronization of clock signals to various components is achieved, but power consumption increases and voltage drops occur
Solution Approach 1:
The patent divides the traditional single clock tree into multiple independent oscillators distributed throughout the integrated circuit. Each oscillator locally generates clock signals, eliminating the need for a centralized clock distribution network. This segmentation reduces power consumption while maintaining synchronization through magnetic coupling between adjacent oscillators.
Solution Approach 2:
The patent introduces magnetic coupling as an intermediary mechanism between oscillators to achieve synchronization. Instead of using a power-intensive clock tree, weak magnetic fields serve as mediators to coordinate the timing of distributed oscillators, significantly reducing power consumption while maintaining synchronization.
2Ease of operation
If clock buffers are used at various stages of the clock tree, then clock signal distribution is enabled, but voltage drops of the supply voltage occur
Solution Approach 1:
The patent extracts and eliminates the clock buffer components from the system by replacing the centralized clock tree with distributed oscillators. Each oscillator inherently provides the clock signal without requiring external buffers, thereby removing the source of voltage drops while maintaining clock distribution functionality.
3Speed
If the frequency of the clock signal is increased, then operation speed improves, but power consumption for driving the clock tree increases
Solution Approach 1:
The patent implements dynamic frequency adjustment capability in each distributed oscillator, allowing them to operate at higher frequencies independently. The magnetic coupling mechanism dynamically adapts to maintain synchronization even at increased frequencies, enabling faster operation without the exponential power increase associated with traditional clock trees.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces power consumption, minimizes voltage drops, and ensures synchronized oscillating signals across the integrated circuit, improving overall performance by stabilizing in-phase oscillations and reducing errors.
Implementation Method 1
the inductive device of the first oscillator and the inductive device of the second oscillator are magnetically coupled
Data Source
AI summary
A circuit includes a first oscillator and a second oscillator. The first oscillator includes an inductive device, a capacitive device, and an active feedback device configured to output a first output signal having a predetermined frequency according to electrical characteristics of the inductive device of the first oscillator and electrical characteristics of the capacitive device of the first oscillator. The second oscillator includes an inductive device, a capacitive device, and an active feedback device configured to output a second output signal having the predetermined frequency according to electrical characteristics of the inductive device of the second oscillator and electrical characteristics of the capacitive device of the second oscillator. The inductive device of the first oscillator and the inductive device of the second oscillator are magnetically coupled.