Segmented Housing Antenna Structure for Low-Loss Rigid Devices
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Solution Overview
Problem
Electronic devices with conductive housings used as antennas face challenges in maintaining radiation performance while ensuring rigidity, especially when multiple segment parts are formed, leading to increased radiation loss and vulnerability to external impacts.
Innovation Solution
Incorporating a non-conductive member to fill the segment parts and openings between the conductive housing and the conductive plate, allowing for a variable distance between the antenna's end surfaces and the conductive plate, which reduces radiation loss and enhances mechanical strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple segment parts are formed in the conductive housing to create multiple antennas, then antenna functionality is improved, but the housing becomes vulnerable to external impacts and rigidity deteriorates
Solution Approach 1:
The conductive housing is divided into multiple segment parts that are separated from each other to form multiple antennas with different orientations. Each segment part can be independently positioned and oriented, enabling multi-functional antenna capabilities while maintaining the option to reinforce joints between segments to preserve structural rigidity.
Solution Approach 2:
The housing structure combines conductive materials for antenna segments with non-conductive reinforcing materials at the joints and connection points. This composite approach allows the conductive segments to function as antennas while the non-conductive reinforcement maintains structural integrity and resistance to external impacts.
2Length of stationary object
If the distance between the antenna end surface and conductive plate is reduced to minimize device thickness, then device compactness is improved, but radiation loss increases and antenna performance deteriorates
Solution Approach 1:
The distance between the antenna end surface and conductive plate is varied locally rather than uniformly. The distance is minimized in regions where radiation loss is less critical and maximized near the antenna end surface where radiation performance is most sensitive. This local optimization allows compact overall device thickness while preserving antenna radiation performance.
Solution Approach 2:
Instead of uniformly reducing the distance in the vertical dimension, the design optimizes the distance distribution across multiple dimensions - creating a three-dimensional distance profile that minimizes radiation loss near the antenna while achieving compact overall device thickness through strategic positioning in the vertical, horizontal, and depth dimensions.
3Loss of energy
If the distance between antenna and conductive plate is increased to reduce radiation loss, then antenna radiation performance is improved, but device thickness increases
Solution Approach 1:
The distance between the antenna and conductive plate is optimized locally - increased in regions where radiation performance is critical and decreased in regions where compactness is prioritized. This creates a non-uniform distance profile that reduces overall device thickness while maintaining adequate spacing for radiation performance in key areas.
4Adaptability or versatility
If segment parts are formed to create multiple antennas, then wireless communication versatility is improved, but the housing becomes more vulnerable to external impacts
Solution Approach 1:
The housing is segmented into multiple antenna elements that can be independently oriented for different wireless communication functions. The segmentation enables versatility in wireless communication while the individual segments can be strategically positioned and reinforced to maintain structural reliability against external impacts.
Solution Approach 2:
The housing structure uses composite materials where conductive segments provide antenna functionality and non-conductive reinforcing materials provide impact resistance. This composite construction allows multiple antennas to be formed while the reinforcing materials protect the segmented structure from external impacts.
Data Source
AI summary
An electronic device comprising an antenna and a segmentation part is provided. The electronic device includes a conductive housing, a printed circuit board arranged in the internal space of the conductive housing and comprising a wireless communication module, a conductive plate on which the printed circuit board is arranged, a segmentation part for segmenting at least a portion of the conductive housing, an opening arranged between the conductive housing and the conductive plate, an antenna formed via the segmentation part and the opening, and a non-conductive member for filling at least a portion of the segmentation part and the opening. The distance between a mutually facing end surface of the antenna and end surface of the conductive plate is configured to vary.