Mobile Terminal Antenna Metal Ring Design
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Solution Overview
Problem
Mobile terminal antenna designs suffer from high losses due to the presence of the head and hand, which degrades antenna performance, particularly in complex top conditions with dual cameras and other factors.
Innovation Solution
A mobile terminal with an antenna body and a non-contact metal ring, where the metal ring's vertical projection intersects the antenna body, altering the high-frequency radiation pattern and beam direction to improve reception and reduce losses caused by the head and hand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If an antenna is provided at the top of the mobile terminal, then the antenna can be integrated into the device structure, but the antenna performance degrades due to complex top conditions including dual cameras, proximity sensor and receiver
Solution Approach 1:
The patent moves the antenna from the traditional top position to the bottom edge of the mobile terminal, utilizing an underutilized spatial dimension. This dimensional relocation allows the antenna to operate in a region with fewer interfering components, thereby improving antenna performance while maintaining device integration.
Solution Approach 2:
The antenna is extracted from the congested top area containing dual cameras, proximity sensor and receiver, and placed in the bottom edge region. This extraction removes the antenna from the harmful electromagnetic environment created by nearby components, resolving the performance degradation issue.
2Volume of moving object
If the antenna is placed in the top region with dual cameras and other components, then the device structure is compact, but the loss caused by head and hand increases
Solution Approach 1:
The antenna is relocated to the bottom edge of the device, utilizing the vertical and lateral dimensions differently. This positional change in the third dimension (spatial arrangement) allows the antenna to be far from the user's head and hand during typical usage, reducing signal loss while maintaining device compactness.
Solution Approach 2:
The bottom edge position acts as an intermediary location that is neither too close to the user's body (causing loss) nor too far from the device structure (affecting compactness). This intermediate positioning optimizes both compactness and signal loss reduction.
3Device complexity
If the metal ring is placed in contact with the antenna body, then the structure is simpler, but the antenna performance is degraded due to interference
Solution Approach 1:
The metal ring is extracted from direct contact with the antenna body, creating an isolated electromagnetic environment for the antenna. This separation removes the harmful interference that would occur if the metal ring touched the antenna, while the ring remains positioned to provide the desired electromagnetic shielding effect.
Solution Approach 2:
A non-conductive spacer acts as an intermediary between the metal ring and the antenna body, preventing direct electrical contact and electromagnetic interference while maintaining the structural relationship and shielding functionality of the metal ring.
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
Enhances mobile terminal receiving performance while reducing losses from hand and head interference, improving OTA index and reducing SAR risk.
Implementation Method 1
the metal ring's vertical projection intersects the antenna body, altering the high-frequency radiation pattern and beam direction to improve reception
Data Source
AI summary
Disclosed is a mobile terminal. The mobile terminal comprises an antenna body and a metal ring. The metal ring is provided on the mobile terminal without contacting the antenna body, and the vertical projection of the metal ring on a plane where the antenna body is located intersects the antenna body. By means of the disclosure, signal receiving performance of the mobile terminal is improved, and the loss caused by head and hand is reduced to a certain extent.