Three-axis antenna with partition walls and protuberances
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Solution Overview
Problem
Existing three-axis antennas face challenges in achieving high gain due to low quality factors, often resulting from increased parasitic capacities and the need for additional structural support, which complicates coil winding and reduces efficiency.
Innovation Solution
A three-axis antenna design featuring a magnetic core with protuberances that allow direct winding of orthogonal coils without additional support, incorporating partition walls to separate coils and reduce parasitic capacities, thereby increasing the quality factor and enabling miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If additional structural support is added to hold coils, then coil positioning is improved, but device complexity and parasitic capacity increase
Solution Approach 1:
The magnetic core integrates both magnetic functionality and mechanical support functionality. The core's physical structure serves as the mounting platform for the coils, eliminating the need for separate non-magnetic support structures. This merging of functions reduces device complexity and parasitic capacity while maintaining precise coil positioning through the core's geometric features.
Solution Approach 2:
The magnetic core performs multiple functions simultaneously: it provides magnetic flux path, mechanical support for coils, structural rigidity, and positioning references through its geometric features. This multi-functionality eliminates the need for additional dedicated support components, reducing overall device complexity while maintaining manufacturing precision.
2Manufacturing precision
If coil length is increased to improve winding stability, then manufacturing precision is improved, but quality factor decreases due to increased parasitic capacity
Solution Approach 1:
The magnetic core combines mechanical support and magnetic functionality, allowing coils to be wound directly on the core's surface. This integration provides inherent mechanical stability for winding through the core's geometric features (flat surfaces, ridges, grooves) without requiring excessive coil length, thereby maintaining manufacturing precision while minimizing parasitic capacity.
Solution Approach 2:
The magnetic core features localized geometric variations (flat surfaces, ridges, grooves) at specific locations to provide winding stability only where needed. This localized approach to mechanical support allows for stable coil winding without increasing overall coil length, thus maintaining high quality factor while ensuring manufacturing precision at critical winding locations.
3Manufacturing precision
If non-magnetic support structures are added, then coil positioning is improved, but quality factor decreases due to increased energy dissipation
Solution Approach 1:
The magnetic core merges the support function with the magnetic function, eliminating separate non-magnetic support structures. The core's own geometric features provide the necessary positioning and mechanical support, ensuring that no additional non-magnetic materials are introduced that would increase energy dissipation, thus maintaining high quality factor while achieving precise coil positioning.
4Loss of energy
If partition walls are added to separate coils, then parasitic capacity is reduced, but device complexity increases
Solution Approach 1:
The partition walls are integrated as part of the magnetic core structure rather than being separate components. The core includes built-in magnetic partitions that electrically and magnetically isolate the coils, reducing parasitic capacity. This integration eliminates the need for separate partition structures, reducing device complexity while achieving the goal of minimizing energy loss through reduced parasitic capacity.
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 enhances the quality factor by reducing energy dissipation, allowing for efficient signal emission and reception in any direction while minimizing coil length and eliminating the need for non-magnetic support structures, thus achieving higher gain and space-saving benefits.
Implementation Method 1
a magnetic core (10) having a prismatic configuration... an X-axis coil (20X) wound around the X-axis... a Y-axis coil (20Y) wound around the Y-axis... a Z-axis coil (20Z) wound around the Z-axis
Implementation Method 2
The core 1002 is box shaped and formed of ferrite
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
Three-axis antenna comprising a magnetic core (10) including protuberances (11) on each corner delimiting an X-axis wounding channel (12X) and a Y-axis wounding channel (12Y); in X-axis coil (20X) within the X-axis wounding channel (12X), comprising two separate and adjacent X-axis partial coils (21 X); a Y-axis coil (20Y) within the Y-axis wounding channel (12Y), comprising two separate and adjacent Y-axis partial coils (21Y); and a Z-axis coil (20Z) surrounding the magnetic core (10), wherein said magnetic core includes at least one X-axis partition wall (14X) dividing the X-axis wounding channel (12X) in two X-axis partial wounding channels (13X) wherein the two separate and adjacent Y-axis partial coils (21Y) are housed, and at least one Y-axis partition wall (14Y) dividing the Y-axis wounding channel (12Y) in two Y-axis partial wounding channels (13Y) wherein the two separate and adjacent Y-axis partial coils (21 Y) are housed.