Plated Parasitic Antenna Array for Microwave Frequencies
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Solution Overview
Problem
Current parasitic antenna arrays are labor-intensive, time-consuming, and prone to errors due to manual fabrication processes, which increases costs and reduces the quality of the antenna features.
Innovation Solution
A parasitic antenna array design and fabrication method involving a substrate with a central monopole element and parasitic elements plated through-holes, utilizing automated through-hole formation and plating processes, along with a ground plane and load circuits connected to the parasitic elements, to create a repeatable and efficient antenna array.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual fabrication process is used to attach central monopole element and parasitic pins to substrate, then flexibility in assembly is maintained, but fabrication time, cost, and error rate increase significantly
Solution Approach 1:
The patent merges the central monopole element and parasitic pins into a single integrated structure formed by concurrent plating of multiple through-holes in the substrate. This eliminates the need for separate manual attachment steps, thereby simplifying the manufacturing process while significantly increasing fabrication speed and consistency.
Solution Approach 2:
The through-holes are prepared and positioned on the substrate before the plating process. This preliminary arrangement of holes allows automated plating equipment to form all antenna elements in a single pass, improving productivity while maintaining manufacturing ease through standardized hole patterns.
2Adaptability or versatility
If manual fabrication process is used to attach central monopole element and parasitic pins to substrate, then adaptability to design changes is maintained, but manufacturing precision and consistency deteriorate due to human error
Solution Approach 1:
The patent replaces manual mechanical assembly with an automated electroplating process. The plating process forms all antenna elements with consistent dimensions and positions, eliminating human error while maintaining design flexibility through programmable plating parameters and hole patterns.
Solution Approach 2:
The invention allows design changes to be implemented by modifying plating parameters (such as plating time, current density, or hole dimensions) rather than changing physical components. This maintains adaptability while ensuring consistent manufacturing precision through controlled parameter adjustments.
3Productivity
If automated through-hole formation and plating processes are used, then fabrication time and costs are reduced with improved consistency, but process complexity increases
Solution Approach 1:
The automated fabrication process is divided into distinct sequential steps: through-hole formation, substrate preparation, and concurrent plating of multiple holes. This segmentation allows each step to be optimized independently while maintaining overall process efficiency and reducing complexity through standardized procedures.
4Device complexity
If conventional parasitic array design is used with single component variable reactance, then device simplicity is maintained, but functional versatility and radiation pattern control are limited
Solution Approach 1:
The patent incorporates variable reactance components that allow dynamic adjustment of the antenna's electrical characteristics. This enables the same physical structure to produce different radiation patterns (omni-directional or directional) by changing the reactance values, thereby increasing functional versatility without adding physical 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 reduces fabrication time and costs, enhances the quality of the antenna array by minimizing human error, and allows for efficient operation at high frequencies with improved directional and omni-directional radiation patterns.
Implementation Method 1
each of the plurality of parasitic elements formed by plating a portion of the substrate encompassing a parasitic element through-hole with a metallic material
Data Source
AI summary
The present invention includes a substrate; a central monopole element configured to radiate electromagnetic energy, the central monopole element disposed within a central monopole element through-hole of the substrate and extending from the first to the second surface of the substrate, the central monopole element formed by plating the central monopole element through-hole; a plurality of parasitic elements surrounding the central monopole element, each of the parasitic elements disposed within a parasitic element through-hole of the substrate and extending from the first to the second surface of the substrate, each of the plurality of parasitic elements formed by plating a parasitic element through-hole; a ground plane disposed on the second surface of the substrate; and a plurality of load circuits, each load circuit being connected to a parasitic element of the plurality of parasitic elements, each load circuit further being connected to the ground plane.