Conductive Housing Isolation for Handheld Device Interference
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Solution Overview
Problem
There is a need for handheld electronic devices with reduced size that can effectively support both cellular telephone and data communications while minimizing interference between transceivers and other electrical components.
Innovation Solution
The design incorporates a handheld electronic device with a conductive bezel and housing forming a ground plane, using first and second resonating elements for cellular and data band functionalities respectively, and employing isolation elements like inductors or resistors to prevent interference between transceivers and overlapping electrical components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the device size is reduced to meet consumer demand for small form factor, then the device becomes more portable and compact, but interference between transceivers and electrical components increases
Solution Approach 1:
The patent introduces isolation elements (inductors or resistors) as intermediary components between the transceivers and overlapping electrical components. These isolation elements act as mediators that prevent harmful electromagnetic interference while allowing the transceivers to operate in close proximity to other components, thus enabling compact device design without sacrificing communication performance.
Solution Approach 2:
The patent applies local quality by making specific portions of the device (areas with overlapping electrical components) have different electromagnetic properties. Isolation elements are strategically placed at locations where interference is most likely to occur, creating localized zones with modified electromagnetic characteristics that prevent interference while maintaining overall device compactness.
2Adaptability or versatility
If transceivers are placed in close proximity to support multiple communication bands, then the device supports both cellular and data communications, but interference between the transceivers increases
Solution Approach 1:
The patent uses isolation elements as intermediary components positioned between the first and second transceivers. These intermediaries prevent direct electromagnetic coupling and interference between the transceivers operating on different frequency bands, enabling the device to support both cellular telephone bands and data communication bands simultaneously without harmful interactions.
Solution Approach 2:
The patent segments the electromagnetic environment by introducing isolation elements that create distinct electromagnetic zones around each transceiver. This segmentation allows each transceiver to operate independently on its designated frequency band (cellular or data) without interfering with the other, thus enabling multi-band versatility while controlling interference.
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 configuration allows for compact handheld devices to operate effectively in multiple communication bands with reduced interference, enhancing the device's structural integrity and communication capabilities.
Implementation Method 1
first and second resonating elements for cellular and data band functionalities respectively
Implementation Method 2
conductive bezel and housing forming a ground plane
Implementation Method 3
isolation elements like inductors or resistors to prevent interference
Implementation Method 4
isolation elements like inductors or resistors to prevent interference
Data Source
AI summary
A handheld electronic device may be provided that contains a conductive housing and other conductive elements. Transceiver circuitry, such as radio frequency (RF) transceiver circuitry configured to transmit and receive RF signals, may be connected to the resonating elements by transmission lines such as coaxial cables. The electronic device may have an integrated touch screen display in which a user can control the device by interacting directly with the display.