Indirect Feed Antenna for Thin Electronic Devices
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Solution Overview
Problem
Existing electronic devices face challenges in achieving optimal antenna performance while maintaining a lightweight, thin, and compact design, which is essential for modern user devices that require efficient communication and multimedia capabilities.
Innovation Solution
The electronic apparatus incorporates a design with multiple antenna radiators and connection members that utilize an indirect feed method to resonate and transmit signals across different frequency bands, including a main board with a feed part, metal parts on the housing, and a sub circuit board, ensuring efficient signal transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional direct feed method is used for antenna, then antenna performance is easier to achieve, but device weight and thickness increase
Solution Approach 1:
The patent introduces a feed part as an intermediary element that indirectly feeds the antenna radiator through electromagnetic coupling rather than direct physical connection. This mediator approach allows the antenna to be fed without requiring heavy traditional connectors and grounding structures, thus reducing device weight while maintaining antenna performance
Solution Approach 2:
The patent replaces the traditional mechanical direct connection feed system with an electromagnetic field-based indirect feed system. The feed part uses electromagnetic coupling to transfer energy to the antenna radiator without physical contact, eliminating the need for heavy mechanical connectors and associated grounding structures
2Reliability
If traditional antenna design is used, then antenna performance can be achieved, but device thickness increases
Solution Approach 1:
The patent replaces traditional mechanical antenna support and grounding structures with an electromagnetic field-based indirect feed system. This substitution eliminates the need for thick structural supports and extensive grounding planes, significantly reducing device thickness while maintaining antenna functionality
Solution Approach 2:
The patent transitions from a planar two-dimensional antenna design to a three-dimensional spatial configuration where the feed part is positioned at a distance from the antenna radiator. This dimensional change allows electromagnetic coupling to occur through the space between components, enabling thin-profile device design without compromising antenna performance
3Adaptability or versatility
If more antenna components are added for multi-frequency support, then frequency band coverage improves, but device complexity increases
Solution Approach 1:
The patent designs the feed part and antenna radiator as a universal indirect feed system that can operate across multiple frequency bands. The electromagnetic coupling mechanism is frequency-agnostic, allowing the same basic structure to support various frequency bands without requiring separate dedicated antenna systems for each band, thus reducing overall system complexity
Solution Approach 2:
The patent achieves multi-frequency support by adjusting electromagnetic parameters such as the distance between the feed part and antenna radiator, the geometry of the feed part, and the dimensions of the antenna radiator. These parameter changes allow a single indirect feed system to resonate at multiple frequencies, providing broad frequency band coverage without increasing structural complexity
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 antenna performance by allowing for the transmission and reception of signals across various frequency bands while maintaining a lightweight and compact form factor, improving the overall communication capabilities of user devices.
Implementation Method 1
a feed part that is spaced apart from at least one portion of the at least one first antenna radiator to overlap the at least one portion of the at least one first antenna radiator and feeds an electric current to the at least one first antenna radiator according to an indirect feed method
Implementation Method 2
The antenna radiator and the at least one metal part indirectly receive an electric current from the feed part and resonate to transmit and receive a signal of first frequency band
Data Source
AI summary
An electronic apparatus is provided. The electronic apparatus includes at least one first antenna radiator, a main board including a feed part that is spaced apart from at least one portion of the at least one first antenna radiator to overlap the at least one portion of the at least one first antenna radiator and feeds an electric current to the at least one first antenna radiator according to an indirect feed method, at least one second antenna radiator disposed on a housing of the electronic apparatus, at least one first connection member for electrically connecting the at least one first antenna radiator to the at least one second antenna radiator, and at least one second connection member for electrically connecting a ground part formed on the main board to the at least one second antenna radiator. Also, other various exemplary may be implemented.