Side Key Antenna Aperture Layout for Compact 5G Housings
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Solution Overview
Problem
Electronic devices face challenges in securing space for antennas, particularly for new frequency bands like 5G, due to housing constraints and interference issues, which affect radiation efficiency and portability.
Innovation Solution
The electronic device incorporates a conductive housing with a side key that doubles as an antenna aperture, utilizing a through-hole for the side key to transmit and receive radio waves, and applies a shielding structure to minimize interference and null problems in the antenna radiation pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna is disposed inside the housing, then the device structure is compact, but the radiation efficiency deteriorates
Solution Approach 1:
The patent moves the antenna from the traditional internal housing space to the side surface of the housing, utilizing the lateral dimension for antenna placement. This dimensional transition allows the antenna to protrude outward, increasing its effective radiating area while maintaining a compact internal structure. The side surface mounting provides better radiation characteristics without significantly increasing the device's overall volume.
2Weight of moving object
If the device is made light, thin, short, and small for portability, then portability is improved, but the space for disposing the antenna is reduced
Solution Approach 1:
The side surface of the housing serves dual purposes: it acts as both the structural boundary of the compact device and as the mounting surface for the antenna. The through-hole in the side surface simultaneously provides structural integrity and serves as the antenna aperture. This multi-functionality allows the antenna to be integrated into the compact device structure without requiring additional dedicated space.
3Device complexity
If the antenna is disposed inside the housing, then the device structure is simplified, but interference with existing antennas occurs
Solution Approach 1:
The patent extracts the antenna from the internal housing space and relocates it to the side surface mounting position. This separation removes the antenna from the congested internal environment where it would interfere with other components and existing antennas. The side surface location provides electromagnetic isolation from internal components while maintaining a simplified overall 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
This solution secures space for other components, minimizes interference with existing antennas, and enhances antenna radiation efficiency by using the side key's through-hole as an antenna aperture and applying a shielding structure to address radiation pattern issues.
Implementation Method 1
an antenna which uses the first through-hole as an antenna aperture for transmitting/receiving radio waves
Implementation Method 2
a shielding structure applied to an opening portion required to place a side key
Data Source
AI summary
Provided is an electronic device including a conductive housing including a first face facing a first direction, a second face facing a second direction opposite to the first direction, and a lateral face surrounding at least part of a space constructed between the first face and the second face, a printed circuit board seated inside the housing, and a side key fastened to an edge region of the housing, wherein the side key include a button portion of which one face covers a first through-hole constructed on the lateral face and the other face is exposed to the outside, an actuation portion extending from the face of the button portion covering the first through-hole towards the inside of the housing in such a manner that at least part of the extending portion is inserted to the first through-hole and at least part of the inserted portion moves in a third direction parallel to a normal direction of the lateral face of the housing according to whether the button portion is pressed, a side key circuit board including an outer contact portion pressed by a movement of the actuation portion and an inner contact portion which is in contact with the outer contact portion according to whether the outer contact portion is pressed, and including a switch module which produces an electric signal due to the contact of the outer contact portion and the inner contact portion, a side key bracket on which at least part of the side key circuit board is seated and which fixes and supports the side key circuit board, and an antenna which uses the first through-hole as an antenna aperture for transmitting/receiving radio waves. In addition thereto, various embodiments understood through this document are possible.