Dielectric Antenna Lens Shell Filled With High-k Powder
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Solution Overview
Problem
Conical horn antennas face efficiency drops with wider flare angles due to curved phase fronts, and dielectric lenses used to address this can be heavy and complicate mechanical support structures, especially when made from high dielectric constant materials that are difficult to mold or machine into complex shapes.
Innovation Solution
An antenna lens structure comprising a thin outer shell of a first material with a lower dielectric constant and an interior cavity filled with a high dielectric constant powder, such as aluminum oxide or magnesium oxide, which acts as both a matching layer and defines the lens shape, reducing volume and weight while simplifying manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dielectric lens is used to flatten the phase front of the radiated wave, then antenna efficiency is improved, but the lens becomes heavy and complicates mechanical support structures
Solution Approach 1:
The patent applies composite materials by combining a polymer matrix (first material) with ceramic particles (second material having higher dielectric constant) to create a lens material that achieves high dielectric constant while reducing density and weight compared to solid ceramic lenses, thereby maintaining antenna efficiency while减轻ing mechanical burden
Solution Approach 2:
The patent applies local quality by creating a composite material where ceramic particles are distributed within a polymer matrix, allowing different regions of the lens to have optimized local dielectric properties while maintaining overall structural integrity and reduced weight compared to homogeneous high-dielectric materials
2Volume of moving object
If high dielectric constant materials are used to reduce lens volume, then compactness is improved, but manufacturing complexity increases due to difficulty in molding or machining
Solution Approach 1:
The patent uses composite materials where ceramic particles are mixed into a polymer matrix that can be easily molded, allowing the lens to achieve compact volume through high dielectric constant while avoiding the manufacturing complexity of machining solid ceramic, as the composite can be formed using standard polymer molding techniques
Solution Approach 2:
The patent applies parameter changes by adjusting the concentration and size distribution of ceramic particles within the polymer matrix to optimize the dielectric constant while maintaining manufacturability through conventional molding processes, enabling compact lens design without sacrificing ease of manufacture
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
This approach allows for compact, low-profile antenna lenses with high dielectric constants, reducing the complexity and cost of manufacturing and maintaining efficiency while minimizing the mechanical burden on support structures.
Implementation Method 1
a second material disposed within and at least partially filling the cavity, the second material having a second dielectric constant higher than the first dielectric constant
Data Source
AI summary
A method of manufacturing an antenna lens is disclosed. In one example the method includes forming a shell of a first material, the shell defining an interior cavity and having an internal and external shape corresponding to a shape of an antenna lens. The method further includes at least partially filling the cavity of the shell with a second material different from the first material and having a second dielectric constant higher than a first dielectric constant of the first material. The method includes settling the second material inside the cavity and sealing the shell to form the antenna lens with the second material inside the shell.