Antenna Feed Line Insertion for Power Distribution
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Solution Overview
Problem
Conventional antenna devices require complex configurations and reduced robustness to achieve a desired electric-power distribution ratio, often necessitating impedance adjusting circuits and changes in radiating element shapes or widths, which complicates the design and increases manufacturing tolerance.
Innovation Solution
The antenna device features radiating elements arranged along a main line with feed lines inserted at varying lengths to enhance electrical coupling, allowing for a desired electric-power distribution ratio without altering the shapes or widths of the radiating elements, thereby simplifying the design and maintaining robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If matching elements or impedance adjusting circuits are used to achieve desired electric-power distribution ratio, then the electric-power distribution is improved, but the device complexity increases
Solution Approach 1:
The patent changes the physical parameters of the radiating elements (width, length, shape) to achieve the desired electric-power distribution ratio. By adjusting these geometric parameters, the impedance and power distribution are optimized without adding matching elements or impedance adjusting circuits, thus maintaining configuration simplicity while achieving precise power distribution control.
2Manufacturing precision
If element widths of radiating elements are changed to adjust electric-power distribution, then the power distribution is improved, but the manufacturing robustness decreases
Solution Approach 1:
The patent employs controlled parameter changes in the radiating element geometry (width, length, shape) to achieve the desired power distribution. These parameter adjustments are designed to be within manufacturing tolerances, ensuring that the changes achieve the electrical performance goals while maintaining robustness against manufacturing variations.
3Manufacturing precision
If complex antenna shapes are used to achieve desired electric-power distribution, then the power distribution is improved, but the ease of manufacture decreases
Solution Approach 1:
The patent achieves the desired electric-power distribution by modifying geometric parameters of standard radiating element shapes rather than creating complex antenna structures. This approach maintains manufacturing simplicity while achieving precise power distribution control through parameter optimization.
4Manufacturing precision
If radiating element shapes are changed to adjust electric-power distribution, then the power distribution is improved, but the device complexity increases
Solution Approach 1:
The patent modifies geometric parameters (width, length, shape characteristics) of the radiating elements to achieve the desired power distribution. These parameter changes are implemented within the existing antenna structure framework, avoiding the need for additional matching elements or complex structural modifications, thus achieving precise power distribution without increasing overall device 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 approach allows for adjustable electric-power distribution ratios with a simpler antenna shape, reducing manufacturing complexity and maintaining robustness by adjusting the inserted lengths of feed lines along the main line, thereby optimizing radio-wave directivity.
Implementation Method 1
feed lines are inserted into the respective radiating elements by inserted lengths so that an electrical coupling degree between one of the feed lines and corresponding one of the radiating elements is larger
Data Source
AI summary
An antenna device according to an embodiment includes a main line, radiating elements, and feed lines. The radiating elements are arranged along the main line and radiate radio waves. The feed lines connect the main line and the respective radiating elements. Moreover, the feed lines are inserted into the respective radiating elements by inserted lengths so that an electrical coupling degree between one of the feed lines and corresponding one of the radiating elements is larger as the one feed line is located closer to a leading end than a base end of the main line.