Antenna Placement Strategy for Interference Reduction in Wireless Devices
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Solution Overview
Problem
In information equipment like laptops, the close proximity of radio communication antennas with adjacent or overlapping frequency bands leads to interference, degrading the performance of each radio system.
Innovation Solution
The arrangement of antennas with specific spacing and positioning on the display housing, where antennas for different frequency bands are placed between those with adjacent or overlapping bands to reduce interference, and the use of diversity and space diversity effects to enhance performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multiple radio communication antennas with adjacent or overlapping frequency bands are mounted close together, then the device size is reduced, but interference between antennas increases and performance degrades
Solution Approach 1:
The patent transitions from planar antenna arrangement to three-dimensional spatial arrangement. By positioning antennas at different spatial locations (upper end and lower end of display housing, different lateral positions), the patent achieves frequency band separation in the spatial domain, reducing interference while maintaining compact device dimensions.
Solution Approach 2:
The patent segments the antenna arrangement by frequency band groups. Antennas handling first frequency bands (e.g., 2.4GHz Wi-Fi) are separated from antennas handling second frequency bands (e.g., 5GHz Wi-Fi or Bluetooth), with each group positioned at distinct locations on the display housing to minimize mutual interference.
2Ease of manufacture
If antennas are placed at standard locations for ease of connection, then installation is simplified, but interference with other radio systems increases
Solution Approach 1:
The patent assigns different spatial qualities to different antenna locations based on their frequency band requirements. Specific regions of the display housing are designated for specific frequency bands, creating localized optimization where each antenna operates in its own electromagnetic environment, reducing interference while maintaining manageable installation complexity.
Data Source
AI summary
Information equipment according to an embodiment includes a display housing with a display unit, a first radio communication antenna disposed at an end part of the display housing, a second radio communication antenna using a frequency band adjacent to or overlapped with that of the first radio communication antenna, and a third radio communication antenna disposed at an end part between the first and the second radio communication antennas, and uses a frequency band not adjacent to nor overlapped with those of the first and the second radio communication antennas.