Ceramic Logo Antenna Structure for Compact Wearable Wireless Links
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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.
Innovation Solution
A wearable device antenna structure incorporating a ceramic layer with a metal radiating portion and a connecting portion, which forms a monopole antenna to achieve efficient radiation and transmission, while allowing for design flexibility to create metal logos that enhance device identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional antenna structure is used in wearable devices, then the antenna can provide wireless communication function, but the antenna structure becomes complicated and occupies large space
Solution Approach 1:
The patent combines the antenna structure with the metal logo on the housing to form an integrated antenna system. The metal logo serves dual purposes: aesthetic identification and antenna radiation element, eliminating the need for separate antenna components and reducing structural complexity
Solution Approach 2:
The metal logo on the housing is designed to serve multiple functions: brand identification, aesthetic purpose, and wireless signal radiation. This multi-functional design allows the same component to fulfill both decorative and communication roles, reducing the number of separate components needed
2Reliability
If a traditional antenna structure is used in wearable devices, then the antenna can provide wireless communication function, but the antenna occupies large space in the device
Solution Approach 1:
The antenna structure is merged with the existing metal logo on the housing surface, utilizing the logo's physical space for dual purposes. This integration eliminates the need for additional dedicated antenna space, effectively reducing the area occupied by antenna components
Solution Approach 2:
The antenna structure is designed to extend in multiple dimensions, with the radiating portion extending from the housing surface. This dimensional approach allows the antenna to achieve adequate radiation performance while maintaining a compact footprint on the device surface
3Adaptability or versatility
If metal logos are arranged on the housing for device identification, then aesthetic and identification functions are achieved, but the metal logos affect the transmission characteristic of the antenna structure
Solution Approach 1:
The metal logo and antenna structure are merged into a single integrated component. The logo's metal material and geometric shape are specifically designed to serve as the antenna's radiating element, ensuring that the identification function and antenna transmission function work together rather than interfere with each other
Solution Approach 2:
The design parameters of the metal logo (such as its shape, size, position, and electrical connection) are optimized to achieve both aesthetic identification and effective antenna transmission. By adjusting these parameters, the design ensures good return loss and radiation efficiency while maintaining the logo's visual function
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 antenna structure effectively covers frequency bands for Bluetooth and WiFi 2.4 GHz modes, improving radiation efficiency and transmission characteristics while allowing for aesthetic metal logos, thus addressing the challenge of miniaturization and transmission interference.
Implementation Method 1
The radiating portion and the ceramic layer cooperatively form a monopole antenna radiating structure to generate a radiation signal
Data Source
AI summary
An antenna structure applied in a wearable device includes a ceramic layer, a plastic layer, a radiating portion, a feed portion; and a connecting portion. The ceramic layer includes a first surface and a second surface corresponding to each other. The plastic layer is connected to the second surface. The radiating portion is a predetermined metal pattern and arranged in the first surface. The connecting portion passes through the plastic layer and is electrically connected to the feed portion. The feed portion feeds an electrical current to the radiating portion to generate radiation signals in at least one radiation frequency band. A wearable device having the antenna structure is also provided.