Wideband Antenna Coupling Adjustment via Conductor Plate
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Solution Overview
Problem
Existing wideband antennas face limitations in bandwidth enhancement due to the dimension of the distance between radiating and parasitic conductor elements, and their assembly complexity leads to variations in characteristics and reduced productivity.
Innovation Solution
A wideband antenna design incorporating a coupling adjusting conductor plate between the radiating and parasitic conductor elements, which adjusts electromagnetic coupling by partially overlapping their area of overlap and being electrically connected to the ground conductor plate, thereby enhancing bandwidth while minimizing variations in characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two conductor plates are placed between the radiating conductor element and the parasitic conductor element to strengthen electromagnetic coupling, then bandwidth is increased, but assembly complexity increases and variations in characteristics occur
Solution Approach 1:
The patent extracts the coupling adjustment function from a complex multi-plate structure and implements it through a single conductor plate with an optimized overlap area. This reduces the number of components and assembly steps while maintaining the bandwidth enhancement effect.
Solution Approach 2:
The patent changes the geometric parameter of the coupling adjusting conductor plate by optimizing its overlap area with the radiating conductor element. This parameter optimization allows for controlled electromagnetic coupling strength, achieving bandwidth enhancement without increasing assembly complexity.
2Reliability
If conductor plates are placed between radiating and parasitic conductor elements to enhance coupling, then bandwidth is increased, but variations in characteristics increase
Solution Approach 1:
The patent optimizes the overlap area parameter of the coupling adjusting conductor plate to achieve consistent electromagnetic coupling characteristics. This parameter control reduces variations in antenna performance while maintaining enhanced bandwidth.
3Reliability
If complex assembly structures are used to enhance coupling between conductor elements, then bandwidth is increased, but productivity decreases
Solution Approach 1:
The patent simplifies the coupling adjustment mechanism by using a single conductor plate instead of multiple plates, reducing assembly steps and improving manufacturing productivity while maintaining bandwidth enhancement.
Solution Approach 2:
The coupling adjusting conductor plate is designed with a predetermined overlap area that is optimized during the design phase. This preliminary optimization eliminates the need for complex assembly adjustments, streamlining the manufacturing process and improving productivity.
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 design achieves increased bandwidth and reduced variations in antenna characteristics, facilitating easier assembly and improved productivity by adjusting the coupling strength between the radiating and parasitic conductor elements.
Implementation Method 1
electromagnetic coupling between the parasitic conductor element and the radiating conductor element
Data Source
AI summary
This disclosure provides a wideband antenna including a feed line, a ground conductor plate and a radiating conductor element connected to the feed line and facing the ground conductor plate at a distance from the ground conductor plate. A parasitic conductor element is provided on a side opposite to the ground conductor plate as viewed from the radiating conductor plate and is insulated from these plates. A coupling adjusting conductor plate is positioned between the radiating conductor element and the parasitic conductor element, is configured to adjust an amount of coupling between them, overlaps an area where the radiating conductor element and the parasitic conductor element overlap, and straddles the radiating conductor element in a direction orthogonal to the direction of a current I that flows therein. Both end sides of the coupling adjusting conductor plate are electrically connected to the ground conductor plate via via-holes.