Base Station Antenna Reflector Structure for Front-To-Back Ratio
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Solution Overview
Problem
Existing base station antennas face challenges in improving their radiation performance, particularly in enhancing the front-to-back ratio and reliability of reflection performance.
Innovation Solution
A reflection apparatus for base station antennas is designed, comprising a base plate with a radiation unit and a feeding network, side plates extending towards the feeding network, and return plates connected to the side plates, with strategically placed through holes to optimize radiation performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional base station antenna structure is used, then the structure is simple and easy to manufacture, but the front-to-back ratio in radiation performance is insufficient and reflection reliability is poor
Solution Approach 1:
The reflection apparatus is segmented into multiple functional components: base plate, side plates, and return plates. Each component performs a specific function in controlling electromagnetic wave reflection, thereby improving reflection reliability while maintaining manageable structural complexity through modular design
Solution Approach 2:
The patent introduces a three-dimensional spatial arrangement with side plates extending in one dimension and return plates extending in another dimension perpendicular to the side plates. This multi-dimensional structure enhances the front-to-back ratio by controlling electromagnetic wave reflection from multiple directions, improving reflection performance without excessive complexity
2Reliability
If the reflection apparatus structure is optimized to improve front-to-back ratio, then radiation performance improves, but the weight of the antenna increases
Solution Approach 1:
Through holes are strategically positioned at specific locations on the side plates and return plates, creating local variations in the structure. These localized modifications optimize electromagnetic wave reflection properties to improve front-to-back ratio while removing material in non-critical areas to reduce overall weight
Solution Approach 2:
The side plates and return plates incorporate through holes creating a porous structure that allows electromagnetic waves to pass through while maintaining the reflective function. This porous design reduces the amount of material required, thereby reducing weight while preserving or enhancing reflection performance
3Reliability
If side plates and return plates are added to improve reflection performance, then front-to-back ratio improves, but manufacturing complexity increases
Solution Approach 1:
The reflection apparatus is divided into separate modular components (base plate, side plates, return plates) that can be manufactured independently using standard fabrication processes. This segmentation simplifies manufacturing by allowing each component to be produced separately and then assembled, reducing overall manufacturing complexity despite the enhanced functional performance
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 proposed solution effectively improves the front-to-back ratio and reliability of reflection performance for base station antennas, while maintaining convenience in installation and considering the weight of the antenna.
Implementation Method 1
a first return plate connected to the first side plate, where the first return plate extends relative to the first side plate and toward a direction of the feeding network; and a second return plate connected to the second side plate, where the second return plate extends relative to the second side plate and toward the direction of the feeding network
Data Source
AI summary
A reflection apparatus includes a base plate, where one side is used to dispose a radiation unit, and the other side is used to dispose a feeding network; a first side plate and a second side plate that are separately connected to the base plate and that are disposed opposite to each other, where the first side plate and the second side plate each extend relative to the base plate and toward the side used to dispose the feeding network; a first return plate connected to the first side plate, where the first return plate extends relative to the first side plate and toward a direction of the feeding network; and a second return plate connected to the second side plate, where the second return plate extends relative to the second side plate and toward the direction of the feeding network.