Open Coaxial RF Transition Assembly for Impedance Matching
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Solution Overview
Problem
Existing angled transitions in radiofrequency (RF) devices suffer from high electrical losses and impedance mismatch issues, particularly in high-performance applications, due to parasitic effects and process control challenges in conventional materials and structures.
Innovation Solution
An open coaxial structure with a cavity is used to guide electromagnetic radiation across angled transitions, reducing losses and improving impedance matching by directing electromagnetic fields towards RF transmission layers, optionally with grounding regions and varying cavity sizes and shapes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional angled transitions with orthogonal conductors are used, then structural simplicity is maintained, but electrical losses increase and RF performance deteriorates
Solution Approach 1:
An open coaxial structure acts as an intermediary component between the conductor and the RF transmission layer. This mediator guides the electromagnetic field from the conductor to the transmission layer, reducing electrical losses and improving RF performance without requiring complex integrated solutions.
Solution Approach 2:
The solution transitions from a planar two-dimensional connection to a three-dimensional structure by introducing the open coaxial structure with its cavity and side-opening. This dimensional change allows the electromagnetic field to be guided through a controlled path, reducing losses while maintaining structural manageability.
2Manufacturing precision
If simple orthogonal conductors are used for angled transitions, then manufacturing ease is maintained, but impedance matching deteriorates
Solution Approach 1:
The open coaxial structure serves as an intermediary that provides controlled impedance matching between the conductor and the RF transmission layer. By mediating the electromagnetic field transition, it achieves precise impedance matching while keeping the manufacturing process manageable through standardized components.
3Reliability
If conventional transition structures are used, then process control simplicity is maintained, but RF performance and transmission efficiency deteriorate
Solution Approach 1:
The open coaxial structure acts as a reliable intermediary that ensures consistent RF performance by guiding the electromagnetic field through a controlled path. This mediator reduces variability and improves reliability while maintaining a manageable structural complexity.
Solution Approach 2:
By introducing the third-dimensional open coaxial structure with its cavity and side-opening, the solution achieves better RF performance and transmission efficiency. The dimensional change provides a controlled electromagnetic field path that improves reliability without excessive 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
The open coaxial structure reduces microwave emissions and electrical losses, enhancing RF performance and transmission efficiency in angled transitions.
Implementation Method 1
The cavity of the open coaxial structure guides the electromagnetic field generated by radiofrequency structure across the angled transition such that losses through microwave emission can be reduced
Data Source
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AI summary
An RF transition assembly (300) for enabling a radiofrequency transition between an RF transmission layer (301) of an electronic device and a conductor (309) which is electrically connected (317) to the RF transmission layer (301). The conductor (309) extends generally orthogonal to the RF transmission layer (301). The assembly comprises an open coaxial structure (313) located adjacent to an edge of the RF transmission layer (301). The open coaxial structure (313) comprises a cavity (315) extending therethrough for receiving the conductor (309). The cavity (315) comprises an opening facing the edge of the RF transmission layer (301) so as to direct electromagnetic radiation towards the RF transmission layer (301).