Antenna Reflector Phase Correction Film for Far-Field Gain
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Solution Overview
Problem
Current reflector antennas often cause phase errors on the surface where electromagnetic waves emerge, leading to inefficiencies in installation and reduced accuracy, especially with larger apertures and higher frequency requirements.
Innovation Solution
An antenna reflector phase correction film with a substrate and artificial microstructures made of conductive materials, designed to correct the emergent phase of the reflector surface, ensuring a flat equiphase surface for improved far-field performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional manual adjustment method is used for antenna panel positioning, then installation flexibility is maintained, but installation efficiency and accuracy deteriorate due to multiple adjustments and low precision
Solution Approach 1:
The patent applies preliminary action by pre-calculating and marking the precise installation positions of antenna panels on the reflector surface before assembly. The position marking method involves calculating theoretical coordinates based on the paraboloid equation, applying correction values for surface errors, and transferring these corrected positions to the actual reflector surface. This preliminary positioning eliminates the need for multiple manual adjustments during installation, directly improving both installation efficiency and positioning accuracy.
2Ease of manufacture
If feed source is not a point source, then practical antenna design is achieved, but phase error is introduced on the emergent surface
Solution Approach 1:
The patent applies local quality by introducing phase correction values at specific locations on the reflector surface to compensate for phase errors caused by non-point feed sources. The correction is not uniform across the entire surface but is locally applied based on calculated phase deviations at different positions. This allows the antenna to use practical non-point feed sources while maintaining phase accuracy through localized phase compensation.
3Reliability
If antenna aperture and working frequency are increased, then antenna performance is improved, but requirements on reflector accuracy become increasingly high
Solution Approach 1:
The patent addresses the increasing accuracy requirements for larger apertures and higher frequencies by applying preliminary correction values to the position markings before installation. The method calculates theoretical positions based on ideal paraboloid geometry, determines correction values for expected surface errors, and applies these corrections in advance to the position markings. This preliminary correction ensures that even with manufacturing tolerances, the installed panels achieve the required phase accuracy for high-performance applications.
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 film corrects phase errors caused during installation, achieving a complete flat equiphase surface and enhancing far-field performance, such as higher antenna gain, by optimizing the refractive index distribution and structure of the microstructures.
Implementation Method 1
refractive index distribution of the antenna reflector phase correction film is rationally designed so that an electromagnetic wave, emergent after being reflected by an antenna reflector attached with the antenna reflector phase correction film, has a flat equiphase surface
Data Source
AI summary
The disclosure relates to an antenna reflector phase correction film and a reflector antenna. The antenna reflector phase correction film includes a first substrate, a second substrate, and multiple artificial microstructures disposed between the first substrate and the second substrate, the artificial microstructures are wires made of electrically conductive materials, and an electromagnetic wave, emergent after being reflected by an antenna reflector attached with the antenna reflector phase correction film, has an equiphase surface. According to the disclosure, the antenna reflector phase correction film has specific refractive index distribution internally, so that a surface emergent phase of a reflector can be corrected after attaching onto a surface of a conventional reflector, a phase error caused due to installation or processing is improved, a complete flat emergent equiphase is obtained, and then a far-field performance (such as a higher gain) is improved.