Multi-band Antenna with Non-segmented Border for Carrier Aggregation
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Solution Overview
Problem
Existing electronic devices with metal exteriors face challenges in achieving optimal antenna performance for carrier aggregation due to the conductive border member structure, which can lead to isolation issues and reduced productivity, especially when trying to support multiple frequency bands for LTE-advanced communications.
Innovation Solution
The implementation of a non-segmented conductive border member in electronic devices, which includes a first and second antenna connected to feed terminals and a bypass conductor to alternately connect the conductive border member between the antennas to the ground, allowing for multiple resonance across various frequency bands without overlapping, thereby enhancing antenna performance and supporting carrier aggregation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conductive border member is segmented to form gaps for antenna use, then antenna performance is improved, but appearance is spoiled and manufacturing yield is reduced
Solution Approach 1:
The conductive border member is divided into multiple segments (first conductive border member, second conductive border member, third conductive border member, fourth conductive border member) with gaps between them. These segments are positioned at specific locations to form antenna elements while maintaining overall structural integrity. The segmentation allows the border member to function as an antenna without requiring complete removal of conductive material, thus improving antenna performance while preserving manufacturing feasibility.
2Reliability
If the conductive border member is segmented into four sections, then antenna performance is secured, but productivity is reduced and defect rate is increased
Solution Approach 1:
The conductive border member is segmented into four distinct sections (first, second, third, and fourth conductive border members) positioned at different locations around the device. Each segment serves as an antenna element for different frequency bands or functions. This segmentation enables multi-band antenna operation while maintaining a modular structure that can be manufactured using standard processes, thereby securing antenna performance without excessively compromising productivity.
Solution Approach 2:
The segmented conductive border member structure serves multiple functions: it provides structural support as a border member, acts as antenna elements for different frequency bands, and enables carrier aggregation functionality. By making the border member multi-functional, the design eliminates the need for separate antenna components, thereby improving productivity while maintaining antenna performance.
3Power
If multiple receiver antennas are added to support carrier aggregation, then transmission rate is improved, but isolation between antennas becomes problematic
Solution Approach 1:
The receiver antenna system is divided into multiple independent segments (first receiver antenna, second receiver antenna, third receiver antenna, fourth receiver antenna) that are spatially separated and electrically isolated from each other. Each segment operates independently to receive signals on different frequency bands, enabling carrier aggregation while maintaining adequate isolation between antenna elements through their distributed positioning and gap structures.
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 solution improves antenna performance by reducing interference and maintaining communications sensitivity across multiple frequency bands, supporting carrier aggregation effectively without the need for segmentation, thus enhancing the device's ability to handle various LTE-advanced frequencies.
Implementation Method 1
a first antenna connected to the first feed terminal and the conductive border member, and forming a multiple resonance for covering a first multi-band having a plurality of bands, a second antenna connected to the second feed terminal and the conductive border member and forming a multiple resonance for covering a second multi-band
Implementation Method 2
a bypass conductor configured to bypass interference signals generated by the first antenna and the second antenna to the ground
Data Source
AI summary
An electronic device including a multi-band antenna, a cover, a substrate, and a conductive border member is disclosed, where the device includes a first feed terminal connected to a circuit of a substrate embedded in the device, a second feed terminal connected to the circuit and insulated from the first feed terminal, a ground disposed on the substrate, a conductive border member continuously disposed along a periphery of the electronic device, a first antenna connected to the first feed terminal and the conductive border member, and the first antenna forming a multiple resonance for covering a first multi-band having a plurality of bands, a second antenna connected to the second feed terminal and the conductive border member and the second antenna forming a multiple resonance for covering a second multi-band, and a bypass conductor to bypass interference signals generated by the first antenna and the second antenna to the ground.