Foldable Housing Antenna Slit Layout for Overlap Radiation Loss
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Solution Overview
Problem
Antenna performance deteriorates due to overlapping housings in rotatable-type electronic devices, particularly when metallic members overlap, leading to reduced radiation efficiency.
Innovation Solution
A slit is disposed in the conductive member of a second housing to correspond with a slit in the conductive member of a first housing, mitigating antenna performance degradation when the housings are folded or rotated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If at least two housings are disposed in a rotatable manner with overlapping positions, then the electronic device achieves rotatable functionality and compact design, but antenna radiation performance deteriorates due to metallic member overlap
Solution Approach 1:
The conductive member of the second housing is segmented by disposing slits to divide it into multiple conductive segments. This segmentation prevents the continuous metallic structure from blocking antenna signals, thereby resolving the contradiction between rotatable functionality and antenna radiation performance.
Solution Approach 2:
Slits are strategically disposed at specific positions in the conductive member where they correspond to the antenna's signal path. This local modification creates non-conductive regions precisely where needed to maintain signal transmission, while preserving the overall conductive structure's aesthetic and structural functions.
2Strength
If a continuous conductive member is used in the housing, then aesthetic appearance and structural integrity are maintained, but antenna signal transmission is blocked when housings overlap
Solution Approach 1:
The continuous conductive member is divided into multiple conductive segments through slits. This maintains structural integrity by preserving the overall conductive framework while eliminating signal blocking by creating gaps in the metallic continuity at critical positions.
Solution Approach 2:
Non-conductive material is introduced as an intermediary substance filling the slits in the conductive member. This intermediary material prevents signal blocking by replacing the conductive metallic path with a non-conductive barrier at the overlapping housing regions.
3Reliability
If slits are disposed in the conductive member to prevent signal blocking, then antenna radiation performance is maintained, but manufacturing complexity increases
Solution Approach 1:
Slits are pre-formed in the conductive member during the housing manufacturing process, before final assembly. This preliminary action integrates the signal-blocking prevention feature into the base manufacturing workflow, minimizing additional complexity while ensuring antenna performance from the outset.
Data Source
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Figure 3A
AI summary
According to various embodiments of the present disclosure, an electronic device may include a first housing including a first side facing a first direction, a second side facing a second direction opposite to the first direction, and a first lateral side surrounding at least part of a space between the first side and the second side, a second housing including a third side facing a third direction, a fourth side facing a fourth direction opposite to the third direction, and a second lateral side surrounding at least part of a space between the third side and the fourth side, a first display located in the first housing and exposed through the first housing, a connecting member which connects the first housing and the second housing such that the first housing and the second housing are folded to face each other, wherein when the first housing and the second housing are folded, the first lateral side and the second lateral side abut against each other, a first conductive member disposed to at least part of the first lateral side, wherein the first conductive member includes a first non-conductive slit and second non-conductive slit extended in the first direction or the second direction such that the first conductive member is divided into a plurality of conductive segments, a second conductive member disposed to at least part of the second lateral side, wherein the second conductive member includes a third non-conductive slit and fourth non-conductive slit extended in the third direction or the fourth direction such that the second conductive member is divided into a plurality of conductive segments, and when the first housing and the second housing are folded, the first slit and the fourth slit abut against each other and the second slit and the third slit abut against each other, and at least one wireless communication circuit electrically connected with one of the plurality of conductive segments of the first conductive member at a first point abutting against the first slit, and electrically connected with another of the plurality of conductive segments of the first conductive member at a second point abutting against the second slit.