Split Insulating Base Antenna Reducing Capacitive Coupling
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Solution Overview
Problem
Conventional antennas with a one-piece magnetic core for three orthogonal windings suffer from increased dimensional requirements, reduced sensitivity, and enhanced capacitive couplings between coils, leading to suboptimal performance and manufacturing complexities.
Innovation Solution
An antenna design featuring a split electrically insulating base with two parts providing support for windings, a ferrite magnetic core, and an external winding around the perimeter, which reduces capacitive coupling and simplifies manufacturing through a multi-axis winding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a one-piece magnetic core is used for three orthogonal windings, then the antenna structure is simple, but the dimensional requirements increase and capacitive coupling between coils is enhanced
Solution Approach 1:
The patent divides the base into two separate electrically insulating parts instead of using a single one-piece structure. This segmentation allows the windings to be positioned more compactly in space, reducing the overall dimensional requirements while maintaining the three-axis orthogonal configuration. The two parts can be arranged to minimize the distance between windings, thereby reducing capacitive coupling without increasing the core complexity.
2Device complexity
If a one-piece magnetic core is used for three orthogonal windings, then the core structure is simple, but capacitive coupling between coils is enhanced
Solution Approach 1:
By segmenting the base into two electrically insulating parts, the patent creates physical separation between the windings. This segmentation increases the spacing between adjacent coils, thereby reducing the capacitive coupling between them. The insulating nature of the two parts further minimizes electrical interference while maintaining structural simplicity.
Solution Approach 2:
The two electrically insulating parts act as intermediaries between the windings, providing both mechanical support and electrical isolation. These intermediate structures enable the windings to be positioned closer together without increasing capacitive coupling, as the insulating parts prevent direct electrical interaction while maintaining the orthogonal three-axis configuration.
3Manufacturing precision
If additional spacer elements and thermal adhesive wires are used, then manufacturing precision is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent merges the functions of spacer elements and thermal adhesive wires into the two electrically insulating parts themselves. The insulating parts provide both the mechanical spacing required for precise winding positioning and the thermal conduction path for heating during the curing process. This integration eliminates the need for separate spacer components and adhesive wires, reducing device complexity while maintaining manufacturing precision.
Solution Approach 2:
The two electrically insulating parts serve multiple functions simultaneously: they provide mechanical support for the windings, maintain precise spacing between coils, provide electrical insulation, and act as thermal conduction paths for heating. This multi-functionality eliminates the need for multiple separate components, simplifying the overall device structure while ensuring manufacturing precision.
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
The design results in a smaller, more sensitive antenna with reduced capacitive coupling, improved ease of manufacturing, and cost-effectiveness by eliminating the need for additional spacer elements and thermal adhesive wires, enhancing the quality factor and frequency stability.
Implementation Method 1
an antenna comprising an electrically insulating base split into two parts on which there is arranged a low coercivity magnetic core and two or more windings wound on said core
Data Source
AI summary
The present invention relates to an antenna and a method of manufacturing antennas.The antenna comprises: —a magnetic core (1); —one or more windings (2, 3) arranged around the core (1); —and an electrically insulating base on which the magnetic core (1) provided with the winding or windings (2, 3) is arranged, the electrically insulating base integrating electrically conductive elements (20) provided for being connected to the windings (2, 3), where the electrically insulating base comprises two parts (5, 6) which are arranged in parallel, facing one another, and linked to the magnetic core (1). Each of the two parts (5, 6) provides a support portion, which support portions together constitute a support around the outer perimeter of which there is wound an external winding (4). The method comprises manufacturing the antenna of the invention by sequentially winding all the windings with a multi-axis winding machine.