Air-Filled Waveguide Channel in Multilayer PCB
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional composite boards are primarily designed for electric current transmission and lack versatility, making them difficult to apply to other fields such as electromagnetic wave transmission due to limited manufacturing technology and range of applications.
Innovation Solution
An electromagnetic wave transmission board is developed, featuring a composite board with plated metal layers forming an inner channel structure that uses air as a conductive medium to transmit electromagnetic wave signals, allowing for effective signal reception and output through strategically placed entrances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional composite boards are used for electric current transmission, then manufacturing technology is mature and production is quick, but the range of applications is limited and cannot be applied to electromagnetic wave transmission
Solution Approach 1:
The patent transforms the composite board from a single-function electric current transmission device into a multi-functional structure that can handle both electric current and electromagnetic wave transmission. The inner channel structure with air-filled cavity and conductive plated layers enables the board to function as both a circuit board and an electromagnetic wave guide, thus expanding adaptability while maintaining manufacturing compatibility
Solution Approach 2:
The patent employs composite material structure by combining dielectric composite board material with conductive plated metal layers. This composite approach allows the board to exhibit both insulating properties for electrical isolation and conductive properties for electromagnetic wave transmission, resolving the contradiction between application versatility and manufacturing ease
2Ease of manufacture
If adhesive is used to bond multilayer structure, then assembly is simplified, but adhesive may flow into waveguide channel causing performance degradation
Solution Approach 1:
The patent introduces a barrier layer as an intermediary component between the adhesive bonding layers and the air-filled waveguide channel. This barrier layer serves as a mediator that allows the adhesive to perform its bonding function while preventing the adhesive from contaminating the waveguide channel, thus maintaining both assembly simplicity and channel performance
Solution Approach 2:
The barrier layer is pre-positioned within the inner channel structure before adhesive bonding occurs. This preliminary protective action prevents the potential harmful effect of adhesive intrusion into the waveguide channel, ensuring that the channel remains free of contaminants that would degrade electromagnetic wave transmission performance
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 enables the composite board to efficiently transmit electromagnetic wave signals, expanding its application range beyond traditional current transmission and facilitating easy manufacturing.
Implementation Method 1
The inner channel structure surroundingly defines a predetermined space filled with air, and the inner channel structure has two entrances in air communication with the predetermined space. The predetermined space of the inner channel structure is configured to receive and output an electromagnetic wave signal through the two entrances, respectively, and the electromagnetic wave transmission board is configured to transmit the electromagnetic wave signal by using the air in the predetermined space of the inner channel structure as a conductive medium.
Data Source
AI summary
An electromagnetic wave transmission board includes a composite board and a plated metal layer. The composite board has a plurality of inner walls surroundingly defining an elongated channel in an interior of the composite board. The plated metal layer is formed on at least part of the inner walls so as to jointly form an inner channel structure in the channel. The inner channel structure surroundingly defines a predetermined space filled with air, and the inner channel structure has two entrances in air communication with the predetermined space. The predetermined space of the inner channel structure is configured to receive and output an electromagnetic wave signal through the two entrances, respectively, and the electromagnetic wave transmission board is configured to transmit the electromagnetic wave signal by using the air in the predetermined space of the inner channel structure as a conductive medium.