Bent Balanced Lines in Balance-Unbalance Converters
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Solution Overview
Problem
Conventional balance-unbalance converters do not adequately consider the deterioration in electrical characteristics due to electromagnetic effects from adjacent electronic circuits, leading to performance degradation.
Innovation Solution
A balance-unbalance converter design with bent and inclined balanced lines to create sufficient space between the converter and adjacent electronic circuits, reducing electromagnetic interference and maintaining electrical characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the balanced lines are disposed in a straight-line structure to minimize the converter area, then the area is reduced, but the electrical characteristics deteriorate due to electromagnetic effects from adjacent electronic circuits
Solution Approach 1:
The balanced lines are bent into a curved structure rather than maintaining a straight-line configuration. This curvature creates spatial separation between the balanced lines and adjacent electronic circuits, reducing electromagnetic interference while preserving the electrical characteristics of the balun.
Solution Approach 2:
The design transitions from a two-dimensional straight-line layout to a three-dimensional curved arrangement. By utilizing spatial curvature, the balanced lines are positioned farther from adjacent circuits in the lateral dimension, effectively reducing electromagnetic coupling without increasing the overall converter area.
2Reliability
If the balanced lines are bent to increase distance from adjacent circuits, then electromagnetic effects are reduced, but the converter area increases
Solution Approach 1:
The balanced lines follow a curved path that optimizes the distance from adjacent electronic circuits while minimizing the enclosed area. The curvature radius and arc length are carefully designed to achieve sufficient electromagnetic isolation without excessive area expansion.
Solution Approach 2:
The design optimizes specific geometric parameters of the curved balanced lines, including curvature radius, arc length, and bend angle, to achieve the optimal balance between electromagnetic isolation and area consumption. These parameters are tuned to minimize both the converter area and electromagnetic interference simultaneously.
Data Source
AI summary
Provided is a balance-unbalance converter including: a substrate; an unbalanced line; a first balanced line; and a second balanced line on the substrate. The unbalanced line has a first end at which an unbalanced signal is input, and an opened second end. The first balanced line is in parallel with a line portion of the unbalanced line from the first end to a midpoint of the unbalanced line, and has a midpoint-side third end at which a balanced signal is output, and a grounded fourth end. The second balanced line is in parallel with a line portion of the unbalanced line from the second end to the midpoint, and has a midpoint-side fifth end at which the balanced signal is output, and a grounded sixth end. The unbalanced line is bent at the midpoint toward an opposite side of the first and second balanced lines.