Transparent Dual-Polarized Antenna With Stacked Substrates for Low Profile
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Solution Overview
Problem
The increasing density of 5G base stations is affecting environmental aesthetics and requires antennas with both transparency and a low profile, which existing designs have not adequately addressed.
Innovation Solution
A dual-polarized antenna design using stacked substrates with overlapping radiation portions and feed structures, including metal mesh structures, to enhance dielectric constant and reduce cross-section while maintaining optical transparency and improving radiation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional base station antennas are used, then signal coverage is achieved, but environmental aesthetics are compromised due to over-dense layout and lack of transparency
Solution Approach 1:
The antenna is divided into multiple substrates (first substrate with feed network, second substrate with radiation elements, third substrate with ground plane) separated by dielectric layers. This segmentation allows each layer to be optimized independently for transparency and radiation performance, resolving the contradiction between aesthetic transparency and signal coverage functionality
Solution Approach 2:
The patent employs composite material structures including transparent dielectric substrates, metal mesh radiation elements, and transparent adhesive layers. These composite materials enable the antenna to simultaneously achieve optical transparency for environmental aesthetics and electromagnetic radiation efficiency for signal coverage
2Volume of moving object
If antenna size is reduced for low-profile design, then aesthetic integration is improved, but radiation efficiency deteriorates
Solution Approach 1:
The patent transitions from a planar single-layer antenna design to a three-dimensional stacked multi-substrate configuration. By distributing radiation elements across multiple vertical layers with precise spacing, the antenna achieves low profile height while maintaining effective radiation area and efficiency through spatial optimization in the vertical dimension
3Illumination intensity
If transparent materials are used to achieve beautification, then optical transparency is improved, but dielectric constant and radiation performance worsen
Solution Approach 1:
The patent applies different material properties to different regions: transparent dielectric substrates with optimized permittivity in specific layers, metal mesh structures in radiation areas, and transparent adhesives in bonding regions. This local optimization allows the antenna to achieve both optical transparency and appropriate dielectric characteristics for radiation performance
4Reliability
If feed network complexity is increased to improve signal distribution, then radiation coverage is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The feed network is segmented into modular components on the first substrate, with each feed element independently connected to corresponding radiation elements on the second substrate. This modular segmentation simplifies manufacturing and assembly while maintaining effective signal distribution across all radiation elements
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 design achieves a low-profile, transparent antenna with improved radiation efficiency, reduced cross-polarization, and enhanced signal coverage, suitable for 5G base stations.
Implementation Method 1
the second dielectric substrate and the first radiation layer have a first distance therebetween... orthographic projection of each second radiation portion on the first dielectric substrate at least partially overlaps with an orthographic projection of the corresponding first radiation portion
Implementation Method 2
a first radiation layer on the first dielectric substrate and including at least one first radiation portion... a second radiation layer on the second dielectric substrate and including at least one second radiation portion
Data Source
AI summary
An antenna and an electronic device are provided, and belong to the field of communication technology. The antenna includes a first substrate and a second substrate opposite to each other. The first substrate includes a first dielectric substrate; a first radiation layer is on the first dielectric substrate and includes at least one first radiation portion and at least one feed structure. The first radiation portion is at least electrically connected to one feed structure; and a first reference electrode layer is on a side of the first dielectric substrate away from the first radiation layer. The second substrate includes a second dielectric substrate on a side of the first radiation layer away from the first dielectric substrate with a first distance therebetween; a second radiation layer is on the second dielectric substrate and includes at least one second radiation portion.