Ceramic Logo Antenna Structure for Compact Wearable Wireless
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Solution Overview
Problem
The miniaturization of wearable devices is hindered by the complexity and space occupation of antenna structures, and metal logos on the housing can affect transmission characteristics, necessitating an improvement in antenna design for better efficiency and aesthetics.
Innovation Solution
The antenna structure incorporates a ceramic layer with predetermined dielectric constants and a metal or non-metal pattern structure exposed as a logo, integrated with a plastic layer and a feed portion, forming a resonating structure that efficiently radiates signals across multiple frequency bands while minimizing space and aesthetic impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional antenna structure is used in wearable devices, then wireless communication function is achieved, but the antenna occupies large space and increases device complexity
Solution Approach 1:
The patent combines the antenna structure with the housing body by integrating the radiating element into the housing shell, making the housing serve dual purposes as both structural component and antenna element. This merging eliminates separate antenna components and reduces overall device complexity while maintaining wireless communication functionality
Solution Approach 2:
The housing body is designed to perform multiple functions: it provides mechanical protection, structural support, and simultaneously serves as the antenna's radiating element. This multi-functionality approach allows the same component to fulfill both structural and communication roles, reducing the number of separate components needed
2Shape
If metal logos are arranged on the housing of wearable devices, then aesthetic design and device identifiability are improved, but the transmission characteristic of the antenna structure is affected
Solution Approach 1:
The patent applies different material properties to different regions of the housing: the areas requiring aesthetic logos use non-metallic materials or specific metal patterns, while the antenna radiating areas use materials optimized for electromagnetic wave transmission. This local differentiation allows aesthetic requirements to be met in non-critical areas while maintaining transmission performance in critical antenna regions
Solution Approach 2:
The patent introduces an intermediary layer or pattern structure between the metal logo and the antenna radiating element. This intermediary component (such as a non-metallic coating or patterned structure) allows the metal logo to maintain aesthetic value while preventing direct interference with the antenna's electromagnetic field, thus mediating between aesthetic and functional requirements
3Volume of moving object
If the antenna structure is miniaturized to reduce space occupation, then device size is reduced, but radiation efficiency and frequency bandwidth are degraded
Solution Approach 1:
The patent optimizes the antenna's physical parameters (such as radiating element dimensions, spacing, and configuration) to achieve efficient radiation within a compact form factor. By carefully adjusting these parameters, the antenna maintains adequate radiation efficiency and frequency bandwidth despite the reduced size constraints of wearable devices
Solution Approach 2:
The patent employs composite material structures combining different materials with complementary properties - such as metallic components for conductivity, ceramic materials for dielectric properties, and plastic layers for insulation and structural support. This composite approach enables compact antenna design while maintaining radiation efficiency through the synergistic properties of different materials
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 design enhances radiation efficiency and frequency bandwidth, particularly for Bluetooth and Wi-Fi modes, while maintaining a compact form factor and improving the device's identifiability through aesthetic design.
Implementation Method 1
a ceramic layer (20) coupled to the first radiating portion (10), the ceramic layer (20) having a predetermined dielectric constants
Implementation Method 2
forming a resonating structure that efficiently radiates signals across multiple frequency bands
Data Source
AI summary
An antenna structure applied in a wearable device includes a first radiating portion, a ceramic layer, a plastic layer, and a feed portion. The first radiating portion is a metal structure. The ceramic layer covers and contacts the first radiating portion. The first radiating portion is arranged between the ceramic layer and the plastic layer. The feed portion passes through the plastic layer and feeds an electric current into the first radiating portion, the first radiating portion and the ceramic layer cooperatively generate radiation signals in at least one radiation frequency band. A wearable device having the antenna structure is also provided.