Segmented Antenna With Nonconductive Spans For Interference Control
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Solution Overview
Problem
Mobile nodes face interference from electromagnetic fields generated by antennas, which limits the placement of internal electromagnetic components due to the need for a keep-out region, exacerbated by miniaturization and increasing sophistication.
Innovation Solution
A segmented antenna design with conductive main and coupling arms separated by nonconductive spans, allowing for controlled electromagnetic field direction and positioning of components within the traditional keep-out region, with adjustable nonconductive spans to minimize interference and facilitate tuning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a traditional antenna design is used, then electromagnetic field generation is effective, but electromagnetic interference with internal components occurs
Solution Approach 1:
The antenna is divided into multiple segments separated by nonconductive spans, creating a segmented structure that controls electromagnetic field distribution. This segmentation allows the antenna to maintain performance while directing fields away from sensitive components.
Solution Approach 2:
Different segments of the antenna are positioned and oriented to create localized electromagnetic field patterns. By controlling the orientation and positioning of each segment, the antenna directs fields in specific directions away from sensitive components while maintaining overall antenna effectiveness.
2Object-affected harmful factors
If a keep-out region is maintained around the antenna, then electromagnetic interference is reduced, but available area for internal components decreases
Solution Approach 1:
The segmented structure allows electromagnetic fields to be confined to specific regions between segments, enabling components to be placed in other areas that would traditionally be part of the keep-out region. This reduces the overall keep-out area while maintaining interference protection.
Solution Approach 2:
The antenna segments are oriented in three-dimensional space to direct electromagnetic fields in specific directions, utilizing spatial dimensionality to manage field distribution. This allows components to be positioned in areas that are spatially separated from high-field regions, effectively reducing the two-dimensional keep-out footprint.
3Volume of moving object
If miniaturization is pursued, then device size is reduced, but area for electromagnetic components is further reduced
Solution Approach 1:
The segmented antenna design allows for compact positioning of antenna elements, enabling miniaturization while maintaining field control capabilities. The segments can be closely spaced and oriented to direct fields away from components, allowing both small device size and adequate component placement area.
4Ease of manufacture
If the antenna structure is simplified, then manufacturing is easier, but electromagnetic field control capability is reduced
Solution Approach 1:
The segmented structure with nonconductive spans between conductive segments can be manufactured using standard PCB or antenna fabrication techniques. Each segment is a simple conductive element, and the nonconductive spans are standard insulating materials, making the overall structure easy to manufacture despite the sophisticated field control it achieves.
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
Enables the placement of unrelated electromagnetic components near the antenna while maintaining antenna performance by directing electromagnetic fields away from sensitive components and allowing for dynamic tuning and adjustment.
Implementation Method 1
the first coupling arm is electrically coupled to the main arm across a first span of nonconductive material
Data Source
AI summary
An antenna comprising a main arm comprising conductive material, wherein the main arm is connected to a signal feed, and a first coupling arm comprising conductive material, wherein the first coupling arm is electrically coupled to a ground, and wherein the first coupling arm is electrically coupled to the main arm across a first span of nonconductive material. Also disclosed is a mobile node (MN) comprising a signal feed, a ground, and an antenna comprising a main arm comprising conductive material, wherein the main arm is connected to the signal feed, and a first coupling arm comprising conductive material, wherein the first coupling arm is connected to the ground, and wherein the first coupling arm is electrically coupled to the main arm across a first span of nonconductive material.