mmWave Switch-Antenna Module Behind Non-Conductive Buttons
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Solution Overview
Problem
Implementing mmWave communication in electronic devices while maintaining a high-quality industrial design is challenging due to interference from materials used in the devices, which can compromise both functionality and aesthetics.
Innovation Solution
A multi-function module that integrates mechanical switches as radiating elements for mmWave patch antennas, allowing them to coexist with user input functions, such as volume and power controls, behind non-conductive buttons, thereby maintaining industrial design quality and enabling mmWave communication without redesigning the device enclosure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple mmWave modules are implemented to reduce signal interference, then mmWave communication performance is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple mmWave modules into a single integrated module that shares common components including the antenna substrate, mechanical switches, and housing structure. This merging approach maintains the signal interference reduction benefits of multiple modules while eliminating redundant components, thereby reducing device complexity and manufacturing cost.
Solution Approach 2:
The mechanical switches serve dual functions as both user input controls and as radiating elements for multiple mmWave patch antennas. This multi-functionality allows a single component to fulfill multiple roles, reducing the overall number of components needed and simplifying the device structure while maintaining high-performance mmWave communication capabilities.
2Reliability
If a plastic window is used to cover the mmWave module, then signal interference is reduced, but industrial design quality deteriorates due to discontinuity in the metal frame
Solution Approach 1:
The patent introduces a non-conductive button as an intermediary component that serves as both a user interface element and a signal-transparent window for the mmWave module. This mediator allows the metal frame to remain continuous and aesthetically pleasing while still permitting mmWave signals to pass through to the antenna elements behind it.
Solution Approach 2:
The non-conductive button performs multiple functions: it serves as a user input control, acts as a protective cover for the mechanical switch, and functions as a signal-transparent window for mmWave communication. This multi-functionality eliminates the need for separate plastic window components, maintaining both signal quality and industrial design quality.
3Shape
If mechanical switches are positioned behind non-conductive buttons for user input, then industrial design quality is maintained, but space for mmWave antenna elements is limited
Solution Approach 1:
The patent utilizes the three-dimensional space behind the non-conductive button by positioning multiple mmWave patch antennas and mechanical switches on vertically stacked layers. This dimensional arrangement allows sufficient antenna element area to be achieved within the limited space constrained by the button thickness, maintaining both industrial design quality and adequate antenna performance.
Solution Approach 2:
The patent divides the antenna substrate into multiple segments or zones, with different mechanical switches positioned at different locations and orientations. This segmentation allows efficient use of the limited space behind the button, enabling multiple antenna elements to be arranged in a compact configuration that maintains both user input functionality and adequate radiating area.
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 allows for high-performance mmWave communication and user input functionality within electronic devices, reducing manufacturing costs and maintaining the aesthetic quality of the metal frame, while minimizing signal interference.
Implementation Method 1
At least one mechanical switch is implemented as a radiating element for a millimeter wave (mmWave) patch antenna
Implementation Method 2
The multi-function module may be located behind a non-conductive button (e.g., volume button, power button) of the electronic device
Data Source
AI summary
This document describes a multi-function module for mmWave communication and user input using mechanical switches in an electronic device. The multi-function module may be located behind a non-conductive button (e.g., volume button, power button) of the electronic device. Further, the multi-function module includes an elongated antenna substrate with mechanical switches mounted thereon and distributed along a longitudinal length of the antenna substrate. At least one of the mechanical switches is implemented as a radiating element for a mmWave patch antenna. The multi-function module also includes one or more integrated circuit components mounted to the antenna substrate and configured to use the at least one mechanical switch as the radiating element for the mmWave patch antenna to provide the mmWave communication. In this way, the multi-function module enables the mechanical switches to coexist with the mmWave patch antennas.