Antenna Placement in Compact Electronic Device Housing
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Solution Overview
Problem
Existing electronic devices with multiple antennas face design challenges in efficiently accommodating antennas for different frequency bands within a compact housing, leading to potential interference and reduced performance.
Innovation Solution
The electronic device incorporates a housing with a slot and support structure that positions first and second antennas facing each other, with the second antenna configured to operate in a different frequency band, and a support structure to optimize antenna placement and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multiple antennas for different frequency bands are accommodated in a compact housing, then device portability is improved, but antenna interference increases and performance deteriorates
Solution Approach 1:
The patent positions antennas in a three-dimensional configuration within the housing, with the first antenna facing the slot and the second antenna facing the first antenna. This spatial arrangement in multiple dimensions allows multiple antennas to coexist in a compact volume while maintaining signal integrity and reducing interference between different frequency bands.
Solution Approach 2:
The patent introduces a support structure with specific local properties (including reflector in some embodiments) positioned between the antennas and slot. This local structural modification creates distinct electromagnetic environments for each antenna, improving their individual performance while maintaining the compact overall device size.
2Ease of manufacture
If antennas are positioned close together to reduce device size, then manufacturing cost is reduced, but antenna interference increases
Solution Approach 1:
The support structure acts as an intermediary element positioned between the first antenna and the slot, and between the two antennas. This intermediary structure helps manage electromagnetic fields and reduce interference between the closely positioned antennas, allowing them to be manufactured in a compact arrangement without suffering from harmful interference effects.
3Reliability
If antenna configuration is optimized for one frequency band, then performance in that band is improved, but adaptability to other frequency bands is reduced
Solution Approach 1:
The patent configures the housing with a slot and support structure that can accommodate multiple antennas operating in different frequency bands. The first antenna faces the slot for optimal performance in its frequency band, while the second antenna faces the first antenna and operates in a different frequency band. This universal configuration allows the device to handle multiple frequency bands effectively.
Data Source
AI summary
An electronic device may include a housing including a first cover, a second cover, and a slot positioned in a first side surface. A first antenna is positioned between a first inner surface and a second inner surface, facing the slot, and configured to operate in a first frequency band, and a second antenna is positioned between the first inner surface and the second inner surface, facing the first antenna, and configured to operate in a second frequency band different from the first frequency band.