Open-Loop Metal Strips for Wireless Noise Interference
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless noise interference occurs due to noise currents generated from high-speed signal interfaces, leading to inefficient wireless signal transmission, particularly in wireless internet cards, as these noise currents radiate and affect adjacent wireless networks.
Innovation Solution
The implementation of metal components on a circuit board, specifically open-loop terminals and strips, arranged to be about one-fourth wavelength of a predetermined frequency, which induce counter currents to reduce noise interference by altering the flow direction of noise currents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high-speed signal interface is used to transmit wireless signal, then transmission speed is improved, but wireless noise interference increases
Solution Approach 1:
The patent converts the harmful noise currents into beneficial counter currents by using the noise currents themselves to induce opposite-direction currents in the metal components. The noise currents flowing through the metal components generate electromagnetic fields that induce counter currents in adjacent metal structures, which then cancel out the original noise currents, transforming the harmful radiation into a self-canceling mechanism.
Solution Approach 2:
The patent applies preliminary anti-action by pre-configuring metal components (open-loop terminals and strips) with specific dimensions (one-fourth wavelength) and arrangements that are designed in advance to generate counter currents opposing the noise currents. These components are positioned and dimensioned beforehand to create electromagnetic fields that will automatically generate opposing currents when noise currents flow, preventing the noise from radiating effectively.
2Object-generated harmful factors
If metal components with specific dimensions are added to circuit board, then wireless noise interference is reduced, but device complexity increases
Solution Approach 1:
The patent applies parameter changes by specifying precise dimensional parameters for the metal components - the open-loop terminals and metal strips are designed with lengths equal to one-fourth of the wavelength of the noise frequency. This specific parameter (length = λ/4) is critical because it ensures that the electromagnetic fields generated by noise currents induce maximum counter currents in these components, optimizing the noise cancellation effect while maintaining simple geometric shapes.
Solution Approach 2:
The patent uses homogeneous materials (metal components) with consistent electrical properties throughout the circuit board design. The metal strips and open-loop terminals are made from the same conductive material as the existing circuit board traces, ensuring uniform electrical characteristics and simplifying manufacturing. This homogeneity allows the noise reduction mechanism to work effectively without introducing material 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 configuration effectively reduces wireless noise interference by generating induced currents that counteract noise currents, improving transmission efficiency and sensitivity of wireless signals.
Implementation Method 1
The length of the first metal component is about one-fourth wavelength of a pre-determined frequency... generate induced currents that counteract noise currents
Data Source
AI summary
In an embodiment of the disclosure, an electronic device arranged for eliminating wireless noise interference is provided. The electronic device includes a circuit board and two first metal components. The metal components are arranged on different sides of the circuit board. Each of the first metal components comprises a first terminal and a second terminal opposite to the first terminal. The first terminal is coupled to the circuit board and the second terminal is open loop. The length of the first metal component is about one-fourth wavelength of a pre-determined frequency.