Antenna on Heat Vent Structure for Handheld Devices
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Solution Overview
Problem
The design of handheld electronic devices to be lighter and thinner poses challenges in accommodating antennas effectively, as the metallic chassis can shield radiation and require additional holes or windows, compromising appearance integrity and signal quality.
Innovation Solution
The use of a heat vent structure as a platform for the antenna, which allows for efficient transmission and reception of radio frequency signals without the need for additional holes or windows, utilizing a T-shaped radiating portion and parasitic elements to adjust impedance matching values, and can be integrated into both metal and non-metal chassis designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an antenna is installed in a handheld device with a metallic chassis, then signal transmission and reception can be achieved, but the metallic chassis shields the radiation and compromises signal quality
Solution Approach 1:
The patent introduces a non-conductive layer (such as plastic or rubber material) between the metallic chassis and the antenna to act as an intermediary that prevents the metallic chassis from shielding the antenna's radiation. This mediator allows the signal to pass through while maintaining the structural integrity and aesthetic appearance of the metallic chassis.
Solution Approach 2:
The patent extracts the antenna from the interior space of the device and positions it on the external surface of the chassis. This extraction allows the antenna to be placed in a location where it can radiate signals more effectively without being blocked by internal metal components, while still being integrated into the overall device structure.
2Reliability
If additional holes or windows are opened on the metallic chassis for antenna radiation, then signal transmission is improved, but the appearance integrity of the device is compromised
Solution Approach 1:
The patent makes the chassis surface serve multiple functions: it maintains its aesthetic appearance as an external surface while simultaneously functioning as an antenna radiation surface. By integrating the antenna directly onto the chassis exterior, the same surface area serves both structural/aesthetic purposes and signal transmission purposes, eliminating the need for separate antenna windows or holes.
Solution Approach 2:
The patent merges the antenna structure with the chassis surface, making them into an integrated assembly. The antenna is positioned and fixed directly on the external surface of the chassis, combining what would traditionally be separate components (antenna and chassis) into a unified structure that maintains appearance integrity while enabling effective signal transmission.
3Weight of moving object
If the device is made lighter and thinner, then portability is improved, but the radiation space for the antenna is compressed
Solution Approach 1:
The patent transitions the antenna from an internal three-dimensional space configuration to an external two-dimensional surface configuration. By placing the antenna on the external surface of the chassis rather than within the internal volume, the design utilizes the external surface area for radiation purposes, effectively bypassing the limitation of compressed internal space in thin devices.
Solution Approach 2:
The patent employs a flexible mounting approach for the antenna on the chassis surface, allowing the antenna structure to be adapted to the curved or irregular surfaces of thin device profiles. This dynamic positioning capability enables effective antenna placement even on the constrained surfaces of lightweight, thin devices without requiring additional internal volume.
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 maintains the appearance integrity of handheld devices while ensuring effective signal transmission and reception, without compromising the design trend of making devices lighter and thinner, by using the heat vent structure as the radiation space for the antenna.
Implementation Method 1
The antenna is disposed on the heat vent structure and configured for transmitting/receiving at least one of radio frequency signals
Implementation Method 2
The T-shaped radiating portion includes a connecting portion, a first radiating portion and a second radiating portion... At least one parasitic portion is adjacent to the T-shaped radiating portion and configured to adjust an impedance matching value
Data Source
AI summary
A handheld electronic device is provided. The handheld electronic device includes a main body, a heat vent structure, and an antenna. The heat vent structure is disposed on the main body. The antenna is disposed on the heat vent structure for transmitting/receiving at least one radio frequency signal.