Film Antenna with Multi-Frequency Radiation Elements
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Solution Overview
Problem
Current display devices face challenges in implementing high-frequency and broadband communication due to limited space and signal loss, especially with the increasing demand for 5G technology, where antenna design struggles to maintain efficiency as devices become thinner and lighter.
Innovation Solution
A film antenna with multiple radiation elements having different resonance frequencies arranged on the same plane, forming groups with overlapping frequency coverage, and a mesh-pattern structure to enhance signal transmission and reception, integrated with a dielectric layer and a ground layer for improved radiation properties and optical transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single radiation element is used in the antenna, then the device structure is simple, but the communication bandwidth is limited and cannot support high-frequency broadband communication
Solution Approach 1:
The antenna is divided into multiple radiation elements (first, second, and third radiation elements) with different resonance frequencies. Each radiation element is designed with specific dimensions to resonate at different frequency bands, allowing the antenna to simultaneously support multiple frequency ranges including high-frequency 5G communication bands, thereby expanding communication bandwidth without excessive complexity
Solution Approach 2:
The antenna structure is designed to perform multiple functions by integrating radiation elements with different resonance frequencies into a single antenna body. This allows the same antenna structure to handle various communication standards (4G, 5G, Wi-Fi, Bluetooth) across different frequency bands, achieving multi-functionality and broad adaptability
2Weight of moving object
If the display device is made thinner and lighter, then the device portability is improved, but the space available for antenna installation is reduced
Solution Approach 1:
The antenna is designed as a film-type structure that can be integrated into the display device's existing layers. By utilizing the vertical dimension and integrating the antenna within the display stack rather than adding external antenna components, the design achieves broadband communication capability without increasing the device's external dimensions or weight
Solution Approach 2:
The antenna is constructed using thin film materials and flexible conductive layers that can be deposited on substrates. This film-type antenna structure allows for integration within the thin display device profile, maintaining device thinness and lightness while providing sufficient antenna functionality for high-frequency communication
3Area of stationary object
If radiation elements are placed close together to save space, then the device compactness is improved, but signal interference between elements increases
Solution Approach 1:
Different regions of the antenna are designed with different properties - each radiation element has specific dimensions, shapes, and positions optimized for its designated resonance frequency. The first, second, and third radiation elements are strategically positioned and dimensioned to minimize mutual interference while maintaining compact overall size, with each element having local characteristics tailored to its frequency function
Solution Approach 2:
The radiation elements are designed with asymmetric dimensions and configurations rather than uniform symmetric structures. This asymmetry allows each element to have distinct resonance characteristics and reduces coupling effects between elements, enabling closer placement without significant signal interference while maintaining compact antenna area
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 enables broadband signal transmission and reception, enhancing signaling sensitivity and reducing signal loss, allowing for efficient high-frequency communication in compact spaces, suitable for devices like smartphones and other mobile communication devices.
Implementation Method 1
a plurality of radiation elements each having a pattern on a top surface of the dielectric layer, the plurality of radiation elements having different resonance frequencies on the same plane
Implementation Method 2
A film antenna, including: a dielectric layer; and a plurality of radiation elements each having a pattern on a top surface of the dielectric layer
Data Source
AI summary
A film antenna according to an embodiment of the present invention includes a dielectric layer, and a plurality of radiation patterns on a top surface of the dielectric layer. The plurality of radiation patterns has different resonance frequencies on the same plane. The radiation patterns of different frequency bands are arranged in the film antenna to provide a broadband communication.