Waveguide Circulator Recessed Ferrite Magnetization
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Solution Overview
Problem
Existing waveguide circulators are bulky and require complex manufacturing processes, increasing costs due to the need for external magnets and complex handling of current-carrying wires within ferrite elements.
Innovation Solution
A waveguide circulator design featuring ferrite elements positioned within recesses on the junction's inner surfaces, with projections on the outer surfaces for magnetization using magnets or electromagnets, simplifying manufacturing and reducing bulkiness by eliminating the need for internal current-carrying wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external magnets are positioned on the outer surfaces of the waveguide circulator to magnetize ferrite elements, then non-reciprocal energy transfer is enabled, but the device becomes bulky
Solution Approach 1:
The ferrite element is nested within a recess formed in the junction of the waveguide circulator, allowing the magnetizing structure to be integrated within the device rather than positioned externally. This nesting approach reduces the overall device volume while maintaining the necessary magnetic field generation capability for non-reciprocal energy transfer.
Solution Approach 2:
The invention transitions from a two-dimensional surface mounting approach to a three-dimensional integrated structure by forming a recess within the junction and positioning the ferrite element within this recess. This dimensional change allows for more efficient space utilization and reduced device bulkiness.
2Adaptability or versatility
If current carrying wires are placed inside the ferrites of the circulator to enable switch functionality, then switch operation is achieved, but the design and assembly becomes significantly complicated
Solution Approach 1:
The current carrying wire is extracted from the interior of the ferrite element and repositioned to wrap around the exterior of the ferrite element within the recess. This extraction eliminates the complexity of embedding wires inside the ferrite while maintaining the ability to control magnetic field direction for switch functionality.
Solution Approach 2:
Instead of placing the wire inside the ferrite element (conventional approach), the invention inverts the arrangement by positioning the wire outside the ferrite element but still within the recess structure. This inversion simplifies the manufacturing process while achieving the same electrical and magnetic control functions.
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 more compact, cost-effective waveguide circulator with simplified manufacturing and enhanced power handling capabilities, allowing for efficient non-reciprocal energy transfer and switch functionality.
Implementation Method 1
Positioned within the junction 8 of the waveguide circulator 1 is a pair of gyromagnetic members 5 and 7, which are also referred to as 'ferrite elements'
Implementation Method 2
the ferrite elements 5 and 7 are subjected to the influence of a magnetic field that is generated by one or more magnets or electromagnets
Data Source
AI summary
A waveguide circulator comprising at least three waveguide arms intersecting at a junction, wherein the junction has an upper inner surface and a lower inner surface; and a ferrite element positioned within a recess formed within one of the upper inner surface and the lower inner surface of the junction, the ferrite element including a first portion that projects into the junction and a second portion that extends into the recess. A projection extends from an upper outer surface of the junction opposite the upper inner surface of the junction, the projection being positioned opposite the recess formed on the upper inner surface of the junction. In use, the ferrite element is magnetized by applying a magnetic field thereto using a magnet or electromagnet shaped for matingly engaging the projection. A method for manufacturing a waveguide circulator of the type described above is also provided.