Antenna System With Intermediary Shielding For Isolation
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Solution Overview
Problem
Conventional antenna systems in mobile devices suffer from poor isolation due to the close proximity of multiple antennas, leading to interference issues in limited interior spaces.
Innovation Solution
The proposed antenna system includes a first and second antenna operating in a shared frequency band, with a third antenna positioned between them operating in a different frequency band, strategically spaced at least 5 mm apart, to enhance isolation and reduce overall size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multiple antennas are disposed close to each other to save interior space, then the device size is reduced, but antenna isolation deteriorates causing interference
Solution Approach 1:
A third antenna operating in a different frequency band is introduced as an intermediary element positioned between the first and second antennas. This intermediate antenna acts as a shield that blocks electromagnetic interference between the two antennas operating in the same frequency band, thereby improving isolation while maintaining compact spacing
Solution Approach 2:
The invention utilizes frequency band differentiation as a key parameter change. By assigning the third antenna to operate in a different frequency band than the first and second antennas, the system exploits frequency separation to reduce interference, allowing closer physical placement while maintaining isolation performance
2Reliability
If antennas are spaced further apart to improve isolation, then antenna interference is reduced, but the antenna system size increases
Solution Approach 1:
The third antenna serves as a compact intermediary shielding element that provides isolation enhancement without requiring large spacing between antennas. Its presence in the electromagnetic path between the first and second antennas creates a barrier that improves isolation while keeping the overall system footprint small
Solution Approach 2:
The third antenna is nested within the spatial arrangement of the first and second antennas, positioned between them. This nested configuration allows the isolation-improving element to be integrated into the existing antenna structure without significantly increasing the overall system volume
Data Source
AI summary
An antenna system includes a first antenna, a second antenna, and a third antenna. The third antenna is disposed between the first antenna and the second antenna. Both the first antenna and the second antenna operate in a first frequency band. The third antenna operates in a second frequency band which is different from the first frequency band. The first antenna, the second antenna, and the third antenna are all disposed on the same plane.