Radome with Absorbing Elements for Concave Reflector Antenna
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Parabolic reflector antennas without a skirt suffer from high spillover losses and environmental pollution due to lateral radiation, increasing costs, size, and complexity, while existing solutions like absorber skirts are costly and complicate transport.
Innovation Solution
A radome is fixed directly to the edge of the reflector with absorbent parts, preferably triangular in shape, covering less than 15% of the radome's surface, to reduce overflow without a skirt, maintaining performance and minimizing gain impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a skirt is added to the periphery of the parabolic reflector to limit overflow, then spillover losses are reduced and antenna performance is improved, but the cost, dimensions, and packaging complexity increase
Solution Approach 1:
The radome and overflow control function are merged into a single integrated structure. The radome is fixed directly to the edge of the reflector, eliminating the need for a separate skirt component while maintaining overflow control through its peripheral edge design
Solution Approach 2:
The radome serves multiple functions simultaneously: it protects the reflector from environmental elements and controls overflow through its peripheral edge design. This multi-functionality eliminates the need for a separate skirt, reducing complexity and packaging requirements
2Loss of energy
If a skirt is added to the periphery of the parabolic reflector to limit overflow, then spillover losses are reduced and antenna performance is improved, but the wind resistance and risk of pollution accumulation increase
Solution Approach 1:
The radome and overflow control function are merged into a single integrated structure, eliminating the skirt that created wind resistance and pollution accumulation problems while maintaining overflow control
3Loss of energy
If absorbent material is placed at the top of the reflector to reduce overflow, then spillover losses are reduced, but the cost and device complexity increase
Solution Approach 1:
Absorbent parts are placed only at specific locations on the inner surface of the radome (peripheral edge areas), rather than covering the entire surface or adding complex structures. This localized approach reduces overflow while minimizing cost and complexity increases
Solution Approach 2:
The invention uses simplified absorbent parts with basic geometric shapes (triangular, rectangular, or circular) that can be easily manufactured and installed, rather than complex absorbent structures. These simple shapes are positioned strategically to achieve overflow control
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 solution effectively reduces overflow losses, ensuring transmission/reception quality, reducing antenna size, cost, and simplifying transport, while maintaining radiation pattern performance within standard limits.
Implementation Method 1
the inner surface of the radome comprising at least one absorbent part partially covering its surface and arranged along its peripheral edge
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A radome for a concave reflector antenna is fixed directly to the edge of the reflector. The inner surface of the radome includes at least one absorbing element partially covering its surface and positioned along its peripheral edge. The area of the radome covered by the absorbing element(s) is less than 15% of its total surface area. The radome may include two absorbing elements in diametrically opposed positions. Each absorbing element may have a substantially triangular shape, with its base rounded to the edge of the radome, and a portion of its surface removed laterally on each side of the triangle in a circular arc.