Portable Chassis Antenna Assembly With Hidden Dual Radiating Slots
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Solution Overview
Problem
Portable information handling systems face challenges in integrating antennas within a full metal chassis without compromising thermal performance or industrial design, as traditional antenna slots are noticeable and interfere with thermal structures, leading to poor antenna performance.
Innovation Solution
The antenna system is positioned between the C-cover and D-cover of the base chassis, utilizing laser direct structuring (LDS) for a continuous ground plane and hidden radiating slots that allow RF energy to pass through either the C-cover in an open state or the D-cover in a closed state, maximizing performance while maintaining thermal and design integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional antenna slots are used in a full metal chassis, then antenna integration is achieved, but thermal performance deteriorates and industrial design is compromised due to noticeable slots interfering with thermal structures
Solution Approach 1:
The antenna system is divided into two separate radiating slots: a first radiating slot in the C-cover and a second radiating slot in the D-cover. This segmentation allows each slot to serve different operational states (open and closed lid positions), enabling the antenna to maintain performance while avoiding interference with thermal structures in any single state
Solution Approach 2:
The antenna system dynamically adapts its radiation path based on the lid position. The first radiating slot is configured to radiate when the lid is open, while the second radiating slot radiates when the lid is closed. This dynamic behavior allows the antenna to optimize performance for each state without compromising thermal performance in either configuration
2Reliability
If traditional antenna slots are used in a full metal chassis, then antenna integration is achieved, but industrial design deteriorates due to noticeable slots
Solution Approach 1:
The radiating slots are strategically positioned in less visible areas of the chassis. The first radiating slot is located in the C-cover while the second is in the D-cover, allowing the antenna functionality to be integrated without creating noticeable visual disruptions to the overall industrial design of the portable information handling system
3Reliability
If antenna slots are positioned to maximize radiating efficiency, then antenna performance is improved, but visibility of antenna slots increases
Solution Approach 1:
By segmenting the antenna system into two separate radiating slots in different covers (C-cover and D-cover), each slot can be optimized for radiating efficiency in its specific location while the overall system maintains low visibility due to the distributed nature of the slots across different surfaces
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
This solution provides improved antenna performance by maximizing radiating efficiency and minimizing visibility of antenna slots, while ensuring thermal and design requirements are met, enhancing the overall functionality of portable information handling systems.
Implementation Method 1
the first radiating slot providing a radiation path through a C-Cover of a base chassis of the portable information handling system in a lid open state of operation, the second radiating slot providing a radiation path through a D-cover of a base chassis of the portable information handling system in a lid closed state of operation
Data Source
AI summary
An antenna system for a portable information handling system. The antenna system includes an antenna radiating element and an antenna carrier assembly, the antenna radiating element being mounted to the antenna carrier assembly, the antenna carrier assembly comprising a first radiating slot and a second radiating slot, the first radiating slot providing a radiation path through a C-Cover of a base chassis of the portable information handling system in a lid open state of operation, the second radiating slot providing a radiation path through a D-cover of a base chassis of the portable information handling system in a lid closed state of operation.