Antenna Isolation Structure for Electronic Device Interference
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Solution Overview
Problem
Existing antenna configurations in electronic devices, such as notebooks and tablets, require multiple antenna windows and a large space to achieve high communication rates, leading to increased cost and size due to the need for isolation between antennas.
Innovation Solution
An antenna assembly with a housing having a conductive and non-conductive portion, featuring an antenna cavity with at least two antennas and an isolation structure between them to reduce interference and eliminate the need for additional antenna windows, allowing for shared space and reduced size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If multiple antenna windows are opened on the metal casing to accommodate multiple antennas, then the communication rate requirement is met, but the manufacturing cost increases and the device size increases
Solution Approach 1:
The patent combines multiple antennas (LTE antennas and WIFI antennas) into a single integrated antenna assembly housed within one antenna cavity formed in the metal casing. This merging approach allows multiple antennas to coexist in a unified structure, eliminating the need for multiple separate antenna windows while maintaining the required communication rates through MIMO and diversity technologies.
2Speed
If multiple antenna windows are opened on the metal casing to accommodate multiple antennas, then the communication rate requirement is met, but the manufacturing cost increases
Solution Approach 1:
The patent combines multiple antenna functions into a single integrated assembly with one antenna cavity, reducing the number of windows that need to be opened in the metal casing. This simplifies the manufacturing process and reduces costs associated with window opening operations, while still achieving high communication rates through the integrated multi-antenna system.
3Reliability
If antennas are separately arranged in individual antenna windows, then isolation between antennas is achieved, but the space required increases
Solution Approach 1:
The patent arranges multiple antennas in a three-dimensional configuration within the single antenna cavity, utilizing vertical and lateral spacing to achieve isolation. The isolation structure extends in multiple dimensions to separate the antennas effectively, allowing compact packaging while maintaining the required isolation between LTE and WIFI antennas for reliable operation.
4Reliability
If antennas are separately arranged in individual antenna windows, then isolation between antennas is achieved, but the device size increases
Solution Approach 1:
The patent merges multiple antennas into a single integrated assembly housed within one antenna cavity, which is opened as a single window in the metal casing. This consolidation reduces the overall footprint and dimensions of the device compared to having multiple separate antenna windows distributed across the casing, while maintaining isolation through the integrated isolation structure.
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 reduces the number of antenna windows, lowers manufacturing costs, and minimizes the space required for antennas, thereby shrinking the overall size of the electronic device while maintaining effective signal radiation and interference reduction.
Implementation Method 1
the isolation structure isolates induced currents of the two antennas to reduce interference at a same frequency or from adjacent frequency channels between the two antennas
Data Source
AI summary
An antenna assembly is provided for an electronic device. The electronic device has a housing, which includes a first portion and a second portion, the first portion is electrically conductive, and the second portion is non-conductive. The antenna assembly includes an antenna cavity, at least two antennas located in the antenna cavity, and at least one isolation structure. The antennas are used for radiating energy, the isolation structure is disposed between the two antennas and connected to the two antennas, and the isolation structure isolates induced currents of the two antennas to reduce interference at a same frequency or from adjacent frequency channels between the two antennas.