Antenna Reflection Panel Wave-Absorbing Layer Front-to-Rear Ratio
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Solution Overview
Problem
Existing antennas face challenges in improving front-to-rear ratio and cross-polarization isolation without increasing the size of the reflection panel or complicating its edge structure, which leads to increased costs and processing difficulties.
Innovation Solution
A wave-absorbing material layer is applied to the outer surface of the reflection panel to absorb diffracted electromagnetic waves, combining magnetic electromagnetic wave-absorbing materials with conductive geometric structures to enhance absorption and reduce reflectivity, thereby improving the front-to-rear ratio and cross-polarization isolation without altering the panel's structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the area of the reflection panel is increased to improve front-to-rear ratio and cross-polarization isolation, then the electrical performance is improved, but the cross-sectional area of the antenna increases
Solution Approach 1:
The patent converts the harmful diffracted electromagnetic waves at the reflection panel edges into beneficial absorbed energy by applying wave-absorbing materials. Instead of increasing the panel area to suppress diffraction, the harmful diffracted waves are directly absorbed, improving front-to-rear ratio without expanding the antenna's cross-sectional area.
Solution Approach 2:
Wave-absorbing materials are introduced as an intermediary substance between the diffracted electromagnetic waves and the reflection panel. This intermediary layer absorbs the diffracted waves, preventing them from causing interference in the back lobe direction, thereby improving electrical performance without modifying the panel's geometric dimensions.
2Reliability
If the complexity of the edge structure of the reflection panel is improved to improve front-to-rear ratio and cross-polarization isolation, then the electrical performance is improved, but the processing difficulty and product costs increase
Solution Approach 1:
Instead of creating complex edge structures to manage diffracted waves, the patent applies wave-absorbing materials that directly convert the harmful diffraction effect into beneficial energy absorption. This simplifies the manufacturing process while maintaining or improving cross-polarization isolation performance.
Solution Approach 2:
The patent changes the electromagnetic parameters of the reflection panel surface by applying wave-absorbing materials with specific electromagnetic properties. This parameter change approach avoids the need for complex geometric modifications, thereby reducing processing difficulty and production costs while achieving the desired electrical performance.
3Reliability
If the complexity of the edge structure of the reflection panel is improved to improve front-to-rear ratio and cross-polarization isolation, then the electrical performance is improved, but the product costs increase
Solution Approach 1:
The patent transforms the costly approach of creating complex edge structures into a more economical solution by applying wave-absorbing materials. These materials directly address the harmful diffraction effect, improving front-to-rear ratio without the high manufacturing costs associated with complex structural modifications.
Solution Approach 2:
The patent employs relatively inexpensive wave-absorbing materials that can be applied as coatings or layers on the reflection panel, replacing the need for expensive and complex structural modifications. This approach achieves the desired electrical performance at lower product costs.
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 improves the electrical performance of the antenna by enhancing the front-to-rear ratio and cross-polarization isolation, reducing backward interference, and maintaining convenience and cost-effectiveness in installation and assembly.
Implementation Method 1
The wave-absorbing material layer disposed on one side of the outer surface, back to the antenna element, of the reflection panel can absorb an electromagnetic wave that diffracts backward at an edge of the reflection panel of the antenna
Implementation Method 2
The conductive geometric structure layer can absorb, in a centralized manner, electromagnetic waves at an operating frequency required by the wave-absorbing material layer, to facilitate absorption of the magnetic electromagnetic wave-absorbing material layer disposed below
Implementation Method 3
In addition, the added metal layer reflects the absorbed electromagnetic waves to the magnetic electromagnetic wave-absorbing material layer for secondary absorption, to achieve a better wave-absorbing effect
Data Source
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AI summary
The present invention relates to an antenna, which can improve a front-to-rear ratio and cross-polarization isolation without changing a structure of a reflection panel. The antenna includes an antenna element and a reflection panel. The antenna element is disposed on the reflection panel. The antenna further includes a wave-absorbing material layer. The wave-absorbing material layer is disposed on one side of an outer surface, back to the antenna element, of the reflection panel.