Antenna Isolation in Electronic Device Side Member
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Solution Overview
Problem
In electronic devices, such as smartphones and tablets, it is challenging to electrically isolate multiple antennas effectively due to size constraints and the need for supporting the same frequency bands, which often results in degraded radiation efficiency when using conventional switching methods.
Innovation Solution
The implementation of an antenna structure with conductive and non-conductive parts, including protrusions and a grounded coupling area, within the device's housing to enhance broadband performance and achieve better isolation between antenna radiators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are provided in the electronic device to support broadband communications, then the communication capability is improved, but the electrical isolation between antennas becomes difficult to achieve
Solution Approach 1:
The side member is divided into multiple conductive parts (first conductive part, second conductive part, third conductive part) with non-conductive parts between them. This segmentation creates electrical isolation between adjacent antennas while maintaining the overall structure, allowing multiple antennas to operate independently without mutual interference.
Solution Approach 2:
Non-conductive parts are introduced as intermediary elements between adjacent conductive parts of the side member. These non-conductive parts act as electrical isolators, preventing current flow between adjacent antennas while maintaining mechanical continuity of the side member structure.
2Volume of moving object
If the size of the electronic device is limited, then the portability is improved, but the electrical isolation between multiple antennas becomes more difficult to achieve
Solution Approach 1:
The antenna structures are merged with the side member itself, where the conductive parts of the side member directly form the antenna radiating elements. This integration eliminates the need for separate antenna components and isolation structures, achieving effective antenna isolation within a compact form factor.
Solution Approach 2:
The patent utilizes the lateral dimension of the side member to create antenna isolation. By arranging conductive and non-conductive parts alternately along the side member, electrical isolation is achieved in the lateral direction without increasing the overall device volume, allowing compact multi-antenna configuration.
3Reliability
If a conventional switch is used to achieve isolation between antennas, then the antenna isolation is improved, but the radiation efficiency of the antennas is degraded
Solution Approach 1:
The switching component is extracted and removed from the system. Instead of using a conventional switch to achieve antenna isolation, the patent employs passive non-conductive parts integrated into the side member structure, eliminating the need for active switching components that degrade radiation efficiency.
Solution Approach 2:
The side member structure itself provides the isolation function through its alternating conductive and non-conductive parts. The structure serves dual purposes: forming the antenna radiating elements and providing electrical isolation between adjacent antennas, eliminating the need for separate switching mechanisms.
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 configuration improves broadband performance and effectively isolates antenna bands, maintaining radiation efficiency while accommodating multiple frequency bands within the limited device size.
Implementation Method 1
a first non-conductive part in contact with the first conductive part and the second conductive part and interposed between the first conductive part and the second conductive part
Implementation Method 2
The first conductive part includes a conductive loop disposed adjacent to the first non-conductive part and protruding toward the inner space of the electronic device
Data Source
AI summary
Disclosed is an electronic device that includes a housing including a first plate, a second plate, and a side member, a ground layer, a display, a communication circuit, and a processor. The side member includes a first conductive part, a second conductive part, and a non-conductive part in contact with the first conductive part and the second conductive part and interposed between the first conductive part and the second conductive part. The first conductive part may be electrically coupled with the second conductive part. The ground layer may be electrically coupled with a partial section of the first conductive part that is adjacent to the second conductive part. The communication circuit may be electrically connected with the first conductive part and the second conductive part.