Noise Suppression Circuit with Phase-Adjusted Cancellation

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional noise suppression methods fail to effectively eliminate interference from transmission interfaces to receiving interfaces, leading to reduced signal quality and increased bit error rates, and are complex to simulate and design with existing solutions.

Innovation Solution

A noise suppression circuit is introduced between the transmission and receiving interfaces, comprising a first and second noise suppression component connected by a phase adjusting component, which transmits signals through these components to suppress interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If conventional suppression components (conjugate coil, common mode filter, EMI filter) are used to filter incidental noise, then noise filtering capability is improved, but signal transmission is blocked or transmission quality is affected

Engineering Contradiction:

Improvenoise filtering capabilityVSAvoidsignal transmission quality

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent converts the harmful radiation noise from the transmission interface into a beneficial effect by using it to drive a noise suppression circuit that generates counter-phase signals. These counter-phase signals actively cancel the original noise when combined at the receiving interface, transforming the harmful interference into a useful noise cancellation mechanism that preserves signal quality while eliminating noise.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent introduces a noise suppression circuit as an intermediary system between the transmission interface and receiving interface. This intermediary includes phase adjusting components and signal path components that process the noise and generate cancellation signals without directly blocking the main signal transmission path, thereby maintaining signal quality while suppressing noise.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If mechanical coating solution (metal shells, metal foils, absorbing materials) is used to cover sensitive structures, then radiation noise coverage is improved, but production complexity and stability deteriorate

Engineering Contradiction:

Improveradiation noise coverageVSAvoidproduction process complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical coating solution (metal shells, foils, or absorbing materials) with an electrical/electronic noise suppression circuit. Instead of physically covering sensitive structures with mechanical materials, the invention uses electrical signal processing techniques to generate and inject counter-phase noise signals that actively cancel radiation noise, thereby eliminating production complexity associated with mechanical coatings while maintaining effective noise coverage.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Object-affected harmful factors

If noise suppression circuit is designed together with transmission interface, then interference suppression capability is improved, but design time and complexity increase to unreasonable level

Engineering Contradiction:

Improveinterference suppression capabilityVSAvoiddesign time

Core Design Contradiction:

Object-affected harmful factorsVSLoss of time

Solution Approach 1:

The patent segments the noise suppression function into a separate, modular circuit that can be independently designed and integrated with the transmission interface. The noise suppression circuit includes distinct phase adjusting components and signal path components that can be designed separately from the main transmission interface, allowing for independent optimization and reducing overall design complexity and time while maintaining effective interference suppression capability.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250253878A1Noise suppression circuit

Publication Date: 2025.08.07 NAT TAIWAN UNIV

AI summary

A noise suppression circuit is provided. The noise suppression circuit is provided between a transmission interface and a receiving interface. In particular, the transmission interface includes a digital interface, a power transmission interface, or a combination thereof. The noise suppression circuit includes a first noise suppression component and a second noise suppression component. The second noise suppression component is connected to the first noise suppression component through a phase adjusting component. Some signals on the transmission interface are transmitted to the receiving interface through the first noise suppression component, the phase adjusting component and the second noise suppression component. As a result, interference from the transmission interface to the receiving interface is suppressed.