Waterproof Antenna Layout Using Coupled Conductive Patterns
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Solution Overview
Problem
Electronic devices face challenges in securing effective antenna coverage and radiation performance due to limited space and the integration of waterproofing components, which complicates the positioning and electrical interactions within the device.
Innovation Solution
The electronic device incorporates a front cover, a non-conductive case, a support structure, and conductive patterns with a seal to electromagnetically couple the antenna signals, ensuring waterproofing while maintaining antenna performance by positioning the first and second conductive patterns with a non-conductive portion in between, allowing for efficient signal transmission across designated frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If waterproofing components are integrated into the electronic device, then reliability is improved, but device complexity increases and antenna positioning becomes more difficult
Solution Approach 1:
The seal member is integrated with the support structure to form a unified component that provides both mechanical support and waterproof sealing functions, eliminating the need for separate waterproofing components and simplifying the overall device structure
Solution Approach 2:
The support structure serves multiple functions: it provides mechanical support for the antenna, creates positioning cavities for precise antenna placement, and incorporates seal members to provide waterproofing, thereby reducing device complexity while maintaining reliability
2Adaptability or versatility
If the number of antennas is increased to support more applications, then adaptability is improved, but available space for each antenna decreases
Solution Approach 1:
The device interior is divided into multiple separate cavities, each designed to accommodate a specific antenna. This segmentation allows multiple antennas to be positioned in dedicated spaces without interfering with each other, enabling support for multiple communication applications while maintaining adequate space for each antenna
Solution Approach 2:
Antennas are positioned in three-dimensional space utilizing vertical and lateral dimensions, with cavities formed at different heights and locations within the device. This multi-dimensional arrangement maximizes the use of available space, allowing multiple antennas to coexist without compromising individual antenna performance
3Reliability
If antenna coverage and radiation performance are improved, then communication range is extended, but electrical effects with various elements within the device increase
Solution Approach 1:
The antenna is extracted from the general device interior and placed in a dedicated cavity formed by the support structure. This isolation separates the antenna from other electrical elements within the device, reducing unwanted electrical effects and interference while maintaining optimal antenna performance and coverage
Solution Approach 2:
The support structure acts as an intermediary between the antenna and other device elements. It provides a physical barrier and electrical isolation, allowing the antenna to achieve improved coverage and radiation performance without experiencing harmful electrical effects from surrounding components
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 antenna coverage and radiation performance while addressing the limitations of space and waterproofing, ensuring reliable communication without compromising the device's structural integrity or electrical performance.
Implementation Method 1
the first conductive pattern and the second conductive pattern are spaced apart from each other with the first portion interposed therebetween, wherein the first portion extends through the seal to connect the support to the rear portion. The first portion includes a non-conductive portion at least partially positioned between the first conductive pattern and the second conductive pattern. Based on feeding from the wireless communication circuit, the first conductive pattern and the second conductive pattern are electromagnetically coupled with the non-conductive portion interposed therebetween.
Data Source
AI summary
According to an example embodiment of the disclosure, an electronic device is provided. The electronic device includes a front cover forming at least a portion of the front surface of the electronic device, a non-conductive case including a rear portion forming at least a portion of the rear surface of the electronic device and a side portion forming at least a portion of the side surface of the electronic device, a support positioned between the front cover and the non-conductive case and including a first portion and a second portion, wherein the first portion is positioned between the second portion and the side portion, a first conductive pattern disposed between the first portion or the side portion, a second conductive pattern positioned between the second portion and the rear portion and spaced apart from the first conductive pattern, a wireless communication circuit configured to transmit a signal in a designated frequency band through the first conductive pattern and the second conductive pattern, and a seal disposed between the first portion and the rear portion and configured to block fluid flow from a first area where the first conductive pattern is disposed to a second area where the second conductive pattern is disposed.