Laptop Phased Antenna Array Layout for Metal Housing Interference
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Solution Overview
Problem
Challenging to form antennas with desired attributes in electronic devices due to the presence of conductive housing structures that can block or deteriorate antenna performance.
Innovation Solution
Incorporating phased antenna arrays aligned with dielectric windows in the housing, and adjusting the antenna configuration based on the position of the housing components using a lid position sensor to optimize wireless performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phased antenna arrays are aligned with dielectric windows in the housing, then antenna performance is improved, but device complexity increases
Solution Approach 1:
The housing is segmented to include dielectric windows at specific locations where phased antenna arrays are aligned. This segmentation allows the antenna system to be integrated into the housing structure without requiring complete redesign of the entire device, thereby improving antenna performance while limiting the increase in overall device complexity.
Solution Approach 2:
The dielectric windows serve multiple functions: they provide structural integration into the housing, enable antenna signal transmission, and maintain the aesthetic appearance of the device. This multi-functionality reduces the need for additional components, thus improving antenna performance without proportionally increasing device complexity.
2Reliability
If antenna configuration is adjusted based on housing position, then wireless performance consistency is improved, but ease of operation deteriorates
Solution Approach 1:
The antenna configuration adjustment system operates autonomously by detecting housing position and automatically reconfiguring the phased antenna arrays accordingly. This self-service mechanism ensures consistent wireless performance across varying device positions without requiring user intervention, thus maintaining ease of operation while improving performance consistency.
Solution Approach 2:
The system incorporates feedback mechanisms that continuously monitor housing position and adjust antenna configuration in real-time. This closed-loop control ensures optimal wireless performance is maintained regardless of device orientation, while the automation of this process prevents degradation of ease of operation.
3Strength
If conductive housing structures are used, then device strength is improved, but antenna performance deteriorates
Solution Approach 1:
Dielectric windows are introduced as intermediary elements between the conductive housing structures and the phased antenna arrays. These dielectric materials allow antenna signals to pass through while blocking electromagnetic interference from the conductive housing, thus maintaining the structural strength benefits of metal housing while improving antenna performance.
Solution Approach 2:
The housing structure is designed with localized dielectric window regions rather than being uniformly conductive. This local quality change allows specific areas to be optimized for antenna performance while other areas maintain the strength and aesthetic qualities of conductive materials, resolving the contradiction between device strength and antenna performance.
Data Source
AI summary
An electronic device such as a laptop computer may have upper and lower housings. The upper housing may be coupled to the lower housing by a hinge having a hinge axis. The lower housing may have an upper metal wall, a lower metal wall, and an angled metal wall that extends from the upper metal wall towards the lower metal wall. The lower housing may include a phased antenna array with a set of antennas aligned along a linear axis. The phased antenna array may be aligned with a dielectric window in the upper metal wall and may be oriented such that the linear axis is orthogonal to the hinge axis, or may be aligned with a dielectric window in the angled metal wall. One or more processors may adjust the phased antenna array based on the position of the upper housing relative to the lower housing.