Negatively Coupled Inductor Pair for Cross-Coupling Noise Reduction
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Solution Overview
Problem
Existing electronic circuits face significant challenges in reducing cross-coupling noise between loads connected to a single power supply, as current solutions often result in increased costs and valuable space usage.
Innovation Solution
The implementation of a negatively coupled inductor pair with a common path inductance value equal to the mutual inductance value, which counteracts voltage noise by creating a negative mutual inductance effect, thereby canceling cross-coupling noise between loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional noise reduction methods are used, then cross-coupling noise is reduced, but cost and device area increase significantly
Solution Approach 1:
The patent introduces a common path inductance as an intermediary element that mediates between multiple loads sharing a power supply. This inductance creates a negative mutual inductance effect that actively counteracts cross-coupling noise, achieving noise reduction without requiring separate filtering components for each load, thus avoiding significant area and cost increases
Solution Approach 2:
The patent changes the inductance parameters by setting the common path inductance value equal to the mutual inductance value between coupled inductors. This specific parameter relationship creates optimal noise cancellation while minimizing component values and device area, resolving the contradiction between noise reduction performance and device complexity
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 effectively reduces voltage noise between loads by balancing inductance values, minimizing additional noise and allowing for reduced inductance without increasing cross-coupling noise, thus optimizing circuit performance without significant cost or space penalties.
Implementation Method 1
a negatively coupled inductor pair with a common path inductance value equal to the mutual inductance value, which counteracts voltage noise by creating a negative mutual inductance effect
Data Source
AI summary
Embodiments include apparatuses, methods, and systems with cross-coupling noise reduction in circuits. In embodiments, a circuit may include a common inductor and a negatively coupled inductor pair connected or coupled between the first inductor and a first load and a second load. The negatively coupled inductor pair may include a first and a second inductor. The first inductor may be connected or coupled to the first load and the second inductor may be connected or coupled to the second load to reduce cross-coupling noise between the first load and the second load. Examples of passive structures that may be used to implement the circuit are also described. Other embodiments may also be described and claimed.