Antenna Structure With Conductive Dummy Plate for Beam Width Control
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Solution Overview
Problem
The challenge is to develop an efficient antenna structure that minimizes radiation performance degradation due to the presence of conductive parts in electronic devices, while maintaining the device's rigidity and aesthetic appeal.
Innovation Solution
The solution involves incorporating a conductive dummy plate between the antenna elements and the housing, which helps to expand the beam width and reduce radiation performance degradation, allowing the conductive parts to be positioned closer to the antenna without compromising performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the conductive part is disposed close to the antenna structure to reinforce rigidity, then the rigidity of the electronic device is improved, but the radiation performance of the antenna structure deteriorates
Solution Approach 1:
The conductive part is segmented into multiple conductive portions disposed at different positions and orientations. Each conductive portion is positioned to correspond to a specific polarization direction of the antenna elements, creating multiple image sources that work together to improve radiation performance while maintaining structural rigidity through the distributed conductive network.
Solution Approach 2:
Different portions of the conductive part are configured with different properties - some portions correspond to first polarization directions with first conductive configurations, while other portions correspond to second polarization directions with second conductive configurations. This local differentiation allows each region to optimally support the specific polarization it needs to reflect, resolving the contradiction between overall rigidity and localized radiation performance.
2Strength
If the conductive part is disposed to cover the radiation direction of the beam pattern, then the structural support is improved, but the radiation performance of the antenna structure deteriorates
Solution Approach 1:
The conductive portions are asymmetrically arranged with respect to the antenna elements - each conductive portion is positioned at a specific distance and orientation relative to its corresponding antenna elements. This asymmetric positioning creates image sources at specific locations that constructively interfere to enhance radiation in desired directions while maintaining structural support functions.
Solution Approach 2:
The solution moves from a two-dimensional planar arrangement to a three-dimensional spatial configuration. Conductive portions are disposed at different distances from the antenna elements and in different orientations, creating image sources in multiple spatial dimensions. This dimensional expansion allows structural support without blocking radiation paths in any single dimension.
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 configuration enhances the radiation performance of the antenna by reducing performance degradation, while also reinforcing the rigidity of the electronic device and maintaining its aesthetic appearance.
Implementation Method 1
the conductive dummy plate being disposed between the at least one antenna element and the housing in the internal space of the housing
Data Source
AI summary
An electronic device is provided. The electronic device includes a housing including a conductive part coupled to a non-conductive, an antenna structure including a substrate disposed in an internal space of the housing and at least one antenna element disposed to form a beam pattern in a first direction in the substrate, at least one conductive dummy plate disposed between the at least one antenna element and the housing in the internal space, and a wireless communication circuit configured to transmit and/or receive a wireless signal in a specified frequency band through the at least one antenna element. The antenna structure is disposed at a position at least partially overlapped with the non-conductive part, and the at least one conductive dummy plate is disposed at a position at least partially overlapped with the at least one antenna element, when the housing is viewed from the outside of the electronic device.