Recessed Antenna Bracket Structure for Uniform Beam Coverage
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Solution Overview
Problem
The uneven metal housing in electronic devices can degrade wireless communication by influencing the beam pattern of antennas, leading to inconsistent sensitivity and performance, especially at higher frequencies.
Innovation Solution
An antenna fixing structure with a recessed bracket and inclined regions in the housing, where the antenna substrate's radiation area faces outward and its second surface is supported by an inner wall, reducing leakage currents and reflected waves by incorporating slits in the inner wall to improve beam consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal housing is used in electronic devices, then structural strength and rigidity are improved, but beam pattern consistency and wireless communication performance deteriorate due to uneven sensitivity and trap currents
Solution Approach 1:
The inner wall of the recess is segmented into multiple regions including a resting region and an inclined region, creating distinct functional zones that control electromagnetic wave interactions separately. This segmentation allows the structure to maintain overall strength while creating specific zones for beam control and trap current reduction.
Solution Approach 2:
The recess structure with its specific inner wall configuration acts as an intermediary between the antenna module and the metal housing. It mediates the interaction by controlling electromagnetic wave propagation and reducing trap currents before they can affect the antenna performance, thus protecting beam pattern consistency while maintaining the metal housing structure.
2Device complexity
If the antenna module is directly mounted on the metal housing, then device complexity is reduced, but trap currents and reflected waves increase, degrading wireless communication performance
Solution Approach 1:
The recess structure serves as an intermediary mounting structure between the antenna module and the metal housing. It provides a dedicated mounting environment that reduces trap currents and reflected waves without requiring complex additional components, thus eliminating harmful effects while maintaining relatively simple device structure.
Solution Approach 2:
The recess creates a localized region with specific electromagnetic properties around the antenna module. The inner wall with its resting and inclined regions provides local quality control for electromagnetic wave interactions, reducing trap currents and reflections in the immediate antenna vicinity without affecting the overall device structure.
3Area of stationary object
If the radiation area faces the metal housing directly, then beam coverage is maximized, but sensitivity unevenness and beam pattern distortion occur due to metal interference
Solution Approach 1:
The recess structure with its specifically configured inner wall acts as an intermediary between the radiation area and the metal housing. It allows the radiation area to face outward for maximum beam coverage while the inner wall configuration (resting and inclined regions) mediates the interaction with any surrounding metal structures, preventing sensitivity unevenness and beam pattern distortion.
Solution Approach 2:
The inner wall of the recess is designed with asymmetric configuration, including a resting region and an inclined region facing a different direction. This asymmetry is strategically designed to control electromagnetic wave reflections and interactions, creating uniform beam patterns by compensating for potential interference from different directions.
Data Source
AI summary
An electronic device according to certain embodiments, comprises a bracket defining a portion of a surface of the electronic device, the bracket including metal and having a recess formed therein, wherein the recess is formed by an inner wall including a resting region and an inclined region facing a different direction from the inner wall; and an antenna substrate including a conductive pattern, a first surface including a radiation area configured to radiate an RF signal from the conductive pattern, and a second surface opposite the first surface, wherein the antenna substrate is disposed in an interior of the recess such that the first surface faces an opened portion of the recess, the second surface faces the inner wall.