Sliding Device Antenna Layout for Stable Radiation Performance
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Solution Overview
Problem
In slidable electronic devices, the antenna arrangement is compromised due to overlapping housings, leading to deteriorated radiation performance, especially when the second housing is made of metal, which interferes with the antenna's operation.
Innovation Solution
An antenna structure is designed within the first housing, with a conductive part in the second housing electromagnetically connected to maintain radiation performance during sliding operations, utilizing a conductive structure as part of the antenna system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the second housing is disposed to be slidable from the first housing, then the display area can be expanded, but the antenna mounting space is reduced due to overlapping housings
Solution Approach 1:
The patent positions the antenna structure in the vertical dimension (thickness direction) of the first housing, specifically in a region that does not overlap with the second housing when viewed from the top. This spatial arrangement in another dimension allows the antenna to coexist with the slidable second housing without compromising mounting space.
Solution Approach 2:
The patent divides the first housing into multiple functional regions: a first region for the antenna structure, a second region for the sliding mechanism, and a third region for the flexible display. This segmentation allows each component to occupy its designated space without interference, resolving the conflict between antenna mounting and sliding functionality.
2Area of stationary object
If at least one antenna is disposed in a corresponding area of the first housing overlapping the second housing in the slide-in state, then the antenna can be mounted, but radiation performance deteriorates due to interference
Solution Approach 1:
The patent extracts the antenna structure from the overlapping region with the second housing and relocates it to a non-overlapping region in the first housing. This extraction eliminates the source of interference from the metal second housing, thereby preserving radiation performance while maintaining antenna functionality.
Solution Approach 2:
The patent introduces a non-conductive part (such as a non-conductive coating or insulating layer) between the antenna structure and any nearby conductive elements. This intermediary reduces electromagnetic interference and prevents harmful interactions, thereby maintaining reliable radiation performance.
3Strength
If the second housing is made of metal material, then the structural strength is improved, but antenna radiation performance deteriorates due to electromagnetic interference
Solution Approach 1:
The patent applies different material properties to different regions: the second housing uses metal material for structural strength in non-critical areas, while non-conductive materials or coatings are applied in regions near the antenna to minimize electromagnetic interference. This localized differentiation allows both strength and radiation performance requirements to be met.
Solution Approach 2:
The patent introduces non-conductive intermediary layers or coatings on the metal second housing in regions adjacent to the antenna. These intermediaries act as electromagnetic shields or insulators, reducing interference from the metal housing while preserving the structural benefits of the metal material.
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
The solution ensures stable radiation performance regardless of the slide-in/slide-out operation, securing antenna mounting space and maintaining effective communication despite housing overlap.
Implementation Method 1
a conductive part disposed in the second area and electromagnetically connected to the antenna structure in the slide-in state
Data Source
AI summary
According to various embodiments, an electronic device includes: a first housing including a first area, a second housing coupled to be slidable in a first direction from the first housing and including a second area overlapping the first area in a slide-in state, an antenna structure disposed in the first housing to overlap the first area when the first housing is viewed from the top, a conductive part disposed in the second area and electromagnetically connected to the antenna structure in the slide-in state, and wireless communication circuitry electrically connected to the antenna structure. The wireless communication circuitry may be configured to transmit and/or receive radio signals in at least one designated frequency band through the antenna structure and the conductive part in the slide-in state.