Shielding Cover Cavity Antenna for Space-Constrained Multi-Band Devices
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Solution Overview
Problem
Existing smart terminal devices lack sufficient space for adding antennas to support multiple frequency bands and wider bandwidths due to internal stacking constraints.
Innovation Solution
Incorporate a cavity antenna within the electronic device by utilizing an existing conductive shielding cover and circuit board, forming a feed point on the shielding cover connected to the circuit board, with openings for signal radiation opposite the non-display area, allowing reuse of the conductive shielding cover to increase frequency bands and bandwidth without additional space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an antenna is added to increase frequency bands and widen bandwidth, then communication capability is improved, but device space is insufficient
Solution Approach 1:
The patent merges the antenna function with the existing conductive shielding cover by forming a cavity antenna structure. The shielding cover serves dual purposes: electromagnetic shielding and antenna radiation element, eliminating the need for separate antenna space while supporting multiple frequency bands including sub-6GHz and millimeter wave bands.
Solution Approach 2:
The conductive shielding cover is designed to perform multiple functions simultaneously: it acts as both an electromagnetic shielding component and an antenna radiator. This multi-functional design allows the device to support diverse communication frequency bands without adding dedicated antenna components, effectively resolving the space constraint issue.
2Volume of moving object
If a cavity antenna is formed using existing conductive shielding cover, then antenna space is saved, but device complexity increases
Solution Approach 1:
The existing conductive shielding cover automatically serves as the antenna radiator without requiring additional components or complex assembly. The cover's inherent conductive properties and geometric structure are utilized to form the cavity antenna, making the system self-sufficient and avoiding increased device complexity despite the multi-functional design.
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 enables the electronic device to support multiple frequency bands and wider bandwidths efficiently, improving communication quality and user experience without requiring additional antenna space.
Implementation Method 1
the conductive shielding cover and the circuit board enclose to form a cavity... an opening configured to radiate a signal is provided on the side wall
Data Source
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AI summary
An electronic device includes a housing, a screen assembly, a conductive shielding cover, and a circuit board. The screen assembly is connected to the housing, the screen assembly and the housing enclose to form an accommodation cavity, and the conductive shielding cover and the circuit board are separately disposed in the accommodation cavity. A feed point is disposed on the conductive shielding cover, the feed point is electrically connected to the circuit board, and the conductive shielding cover and the circuit board enclose to form a cavity. The conductive shielding cover includes a top wall and a side wall, an opening configured to radiate a signal is provided on the side wall, and the opening is provided opposite to a non-display area of the screen assembly.