Antenna Structure With Segmented Radiation Portions And Grounding Gaps
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Solution Overview
Problem
In portable electronic devices, the reduced installation space for antennas leads to mutual interference, compromising their original characteristics and requiring an antenna structure that improves isolation between adjacent antennas.
Innovation Solution
The antenna structure includes a substrate with two antennas and a grounding member, where the first and second feeding members are designed to prevent overlapping current paths by using a grounding member coupled to both antennas' grounding portions, and providing gaps between radiation and grounding portions to reduce mutual current interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If two antennas are disposed adjacent to each other in reduced installation space, then the device can accommodate multiple antennas in a compact form, but the antennas will interfere with each other and their original characteristics will be compromised
Solution Approach 1:
The patent divides the antenna system into four distinct radiation portions (first, second, third, and fourth radiation portions) with separate current paths. Each antenna is segmented into multiple radiation elements that operate independently with non-overlapping current distributions, reducing mutual interference while maintaining compact installation space.
Solution Approach 2:
The patent implements different gap configurations at specific locations: a first gap between the second radiation portion and first grounding portion, and a second gap between the fourth radiation portion and second grounding portion. These localized structural modifications create non-uniform current distribution that reduces interference in critical areas while maintaining overall antenna performance.
2Device complexity
If the current paths of two antennas overlap, then the antenna structure can be simplified, but mutual current interference increases and isolation between antennas deteriorates
Solution Approach 1:
The patent segments each antenna into multiple radiation portions with distinct current paths. The first antenna comprises first and second radiation portions with a first fed-in portion, while the second antenna comprises third and fourth radiation portions with a second fed-in portion. This segmentation ensures that current paths do not overlap, maintaining reliable isolation between antennas.
Solution Approach 2:
The patent introduces grounding portions and gaps as intermediary elements between radiation portions. The first grounding portion is coupled between the first fed-in portion and substrate ground, and the second grounding portion is coupled between the second fed-in portion and substrate ground. These intermediaries create electrical isolation that prevents current path overlap while maintaining structural simplicity.
Data Source
AI summary
An antenna structure includes a substrate, a first antenna disposed on the substrate, a second antenna disposed on the substrate, a grounding member, a first feeding member and a second feeding member. The first antenna includes a first radiation portion, a second radiation portion, a first fed-in portion, and a first grounding portion spaced from the second radiation portion by a first gap. The second antenna includes a third radiation portion, a fourth radiation portion, a second fed-in portion and a second grounding portion spaced from the fourth radiation portion by a second gap. The first feeding member includes a first feed end coupled to the first fed-in portion and a first ground end coupled to the grounding member. The second feeding member includes a second feed end coupled to the second fed-in portion and a second ground end coupled to the grounding member.