Impedance Converter Segmented Wire Layout for Coupling Control
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Solution Overview
Problem
Impedance converters using electromagnetic field coupling between conductor layers often experience unnecessary electromagnetic field coupling, which deteriorates their characteristics, such as band characteristics, due to the layout of the conductor layers.
Innovation Solution
The impedance converter design includes a specific layout where ungrounded wires are arranged in a configuration that prevents unnecessary electromagnetic field coupling by keeping pairs of wires facing each other and extending in orthogonal directions, with gaps between connection portions to maintain separation and avoid unwanted couplings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conductor layers are arranged to enable electromagnetic field coupling for impedance conversion, then impedance conversion function is achieved, but unnecessary electromagnetic field coupling occurs that deteriorates characteristics
Solution Approach 1:
The conductor layers are segmented into multiple separate conductor patterns rather than using continuous overlapping layers. The first conductor layer includes first and second conductor patterns, and the second conductor layer includes third and fourth conductor patterns, with gaps between adjacent patterns. This segmentation prevents unnecessary electromagnetic field coupling between adjacent conductor segments while maintaining the required coupling for impedance conversion between facing conductor pairs.
Solution Approach 2:
The harmful unnecessary electromagnetic field coupling is extracted and eliminated by removing the overlapping arrangement between adjacent conductor patterns. The invention extracts only the necessary facing conductor pairs for impedance conversion while removing the harmful adjacent coupling by separating them in the planar layout, thus eliminating the deterioration of characteristics.
2Power
If conductor layers are placed close together for efficient coupling, then coupling efficiency is improved, but unnecessary electromagnetic field coupling increases
Solution Approach 1:
The conductor layers are arranged with different spatial relationships in different locations: facing conductor patterns (first with third, second with fourth) are positioned close together to enable strong electromagnetic field coupling for impedance conversion, while adjacent conductor patterns are separated by gaps to prevent unnecessary coupling. This local differentiation of spatial quality achieves efficient coupling where needed while eliminating harmful coupling elsewhere.
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 design effectively reduces unnecessary electromagnetic field coupling, thereby maintaining excellent characteristics and ensuring efficient impedance matching between low- and high-impedance sides, even across a wide frequency range.
Implementation Method 1
an impedance converter that performs signal transmission and impedance conversion by using electromagnetic field coupling between conductor layers facing each other
Data Source
AI summary
An impedance converter includes an insulating layer; a first wire provided on a first surface of the insulating layer and extending in a first direction; a second wire provided on a second surface of the insulating layer and extending in the first direction and face the first wire, the second surface being located on a side opposite to the first surface; a third wire provided on the first surface and extending in a second direction orthogonal to the first direction; a fourth wire provided on the second surface and extending in the second direction and face the third wire; a fifth wire provided on the first surface and extending in the second direction; and a sixth wire provided on the second surface and extending in the second direction and face the fifth wire.