Multiband Antenna External Conductor Segmentation Yield
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Solution Overview
Problem
Existing multiband antennas for portable electronic devices using external conductors face issues with aesthetics and low yield in metal machining due to the need for segmenting the conductor, which affects their performance and appearance.
Innovation Solution
A multiband antenna design that incorporates a conductive connecting member on a non-metallic region of the device, with an external conductor forming integral radiation conductors of different electrical lengths to produce distinct frequency bands, eliminating the need for conductor segmentation and integrating impedance matching units for efficient signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the external conductor is segmented to form a gap for antenna operation, then the antenna can transmit information effectively, but the exterior appearance becomes unsightly and metal machining yield decreases
Solution Approach 1:
The patent applies segmentation by dividing the external conductor into multiple segments (first external radiation conductor and second external radiation conductor) that are selectively connected or disconnected. This allows the antenna to function as a multiband antenna while maintaining the option to keep segments connected for aesthetic purposes, thus resolving the contradiction between transmission performance and appearance/yield.
Solution Approach 2:
The patent introduces a dynamic switching mechanism that allows the antenna segments to be connected or disconnected based on operational requirements. This dynamic configuration enables the system to adapt between different modes: connected for aesthetic appearance and high yield, disconnected for multiband transmission performance, thereby resolving the fixed contradiction.
2Adaptability or versatility
If the external conductor is segmented to enable multiband operation, then different frequency bands can be transmitted, but the exterior appearance deteriorates and manufacturing complexity increases
Solution Approach 1:
The external conductor is divided into segments that can be independently controlled. When connected, they form a continuous aesthetic appearance; when disconnected, they enable multiband operation. This segmentation principle allows the system to switch between aesthetic and functional modes.
Solution Approach 2:
The external conductor structure is designed to serve multiple functions: it can operate as a single-band antenna with continuous appearance, or as a multiband antenna with segmented configuration. The same physical structure adapts to different operational requirements, resolving the contradiction between appearance and multiband capability.
3Reliability
If the external conductor is segmented for antenna functionality, then information transmission is enabled, but the overall device complexity increases
Solution Approach 1:
The conductor is segmented into manageable sections with defined connection points. This segmentation allows for simplified control mechanisms and easier integration with the device's existing antenna system, reducing overall complexity despite the multiband capability.
Solution Approach 2:
The patent merges the external conductor segments with the existing conductor frame structure of the device. By integrating the antenna segments into the device's structural framework, the overall complexity is reduced as shared components serve multiple purposes.
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 enhances the antenna's performance by eliminating segmentation, improving yield in metal machining, and providing a more aesthetically pleasing appearance while maintaining effective multiband operation.
Implementation Method 1
a first external radiation conductor integrally formed with the conductive connecting member and disposed between a first path terminal and the first connecting terminal to produce a first frequency band; and a second external radiation conductor integrally formed with the conductive connecting member and disposed between a second path terminal and the first connecting terminal to produce a second frequency band
Data Source
AI summary
A multiband antenna includes a conductive connecting member, an external conductor, and a conductor frame. The conductive connecting member is disposed on a non-metallic region of an electronic device. The external conductor is disposed on an external surface of the electronic device from a first connecting terminal connected to an end of the conductive connecting member to first and second path terminals, respectively, located opposite to each other. The conductor frame is connected to the first and second path terminals and a ground of a substrate. The external conductor includes a first external radiation conductor disposed between the first path terminal and the first connecting terminal, and a second external radiation conductor integrally formed with the first external radiation conductor and disposed between the second path terminal and the first connecting terminal.