Electronic Rotary Switch with Magnetic Actuation and Sapphire Contacts
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Solution Overview
Problem
Existing millimeter-wave electronic switches face challenges in maintaining high-frequency switching reliability and minimizing attenuation over millions of cycles while preventing contamination from non-electrical contact surfaces.
Innovation Solution
A hermetically sealed electronic rotary switch with a rotator assembly that uses magnets for switching without external mechanical mechanisms, featuring sapphire surfaces to reduce particle generation and contamination, and a rotator assembly that translates and rotates to engage and disengage input/output paths, ensuring long-wearing and low-stress operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mechanical switching mechanism is used in millimeter-wave switches, then switching function is achieved, but particle contamination is generated and reliability decreases over millions of cycles
Solution Approach 1:
The patent replaces traditional mechanical switching mechanisms with an electromechanical system that uses a rotator assembly actuated by electromagnetic forces. This substitution reduces direct mechanical contact and friction, thereby minimizing particle generation while maintaining reliable switching function over millions of cycles at millimeter-wave frequencies
Solution Approach 2:
The patent employs sapphire as a composite material for critical contact surfaces in the rotator assembly. Sapphire's extreme hardness and chemical inertness reduce wear and particle generation, while maintaining electrical conductivity and mechanical strength required for high-reliability switching operations
2Reliability
If traditional mechanical components are used, then switching operation is achieved, but attenuation increases and operation stress increases over time
Solution Approach 1:
The patent replaces traditional mechanical relay components with an integrated electromechanical rotator assembly that uses electromagnetic actuation. This reduces mechanical friction and contact wear, thereby maintaining low signal attenuation and reducing operation stress over millions of switching cycles
Solution Approach 2:
The patent optimizes the electrical and mechanical parameters of the rotator assembly, including contact surface geometry, material composition, and electromagnetic field distribution. These parameter changes minimize signal attenuation and reduce mechanical stress, enabling durable operation at millimeter-wave frequencies
3Ease of manufacture
If non-hermetic design is used, then manufacturing is easier, but contamination from external environment increases
Solution Approach 1:
The patent employs a hermetic seal that creates an inert, controlled environment inside the switch housing. This prevents moisture, dust, and other environmental contaminants from reaching sensitive internal components, ensuring long-term reliability while maintaining a compact design that is still relatively easy to manufacture
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 solution provides a robust, low-attenuation switching mechanism capable of surviving millions of cycles with minimal contamination, suitable for high-frequency applications above 30 GHz, ensuring reliable operation and maintaining a hermetic seal.
Implementation Method 1
an electromagnet and a permanent magnet, in combination, configured to translate the rotator assembly along the rotational axis in the direction away from the substrate and in a direction toward the substrate
Implementation Method 2
the electromagnet and the permanent magnet, in combination, configured to translate the rotator assembly
Implementation Method 3
the electromagnet and the permanent magnet, in combination, configured to rotate the rotator assembly between the first rotational configuration and the second rotational configuration of the rotator assembly
Implementation Method 4
the electromagnet and the permanent magnet, in combination, configured to rotate the rotator assembly
Data Source
AI summary
An electronic switch includes a substrate and a rotator assembly. The rotator assembly is configured to prevent rotation between a first rotational configuration and a second rotational configuration in a first translational position of the rotator assembly, while the rotator assembly is configured to rotate between the first rotational configuration and the second rotational configuration in a second translational position of the rotator assembly. The second translational position of the rotator assembly is translationally offset from the first translational position of the rotator assembly. An electrical contact of the rotator assembly is configured to electrically connect an electronic input path of the substrate to an electronic output path of the substrate in the first rotational configuration and first translational position of the rotator assembly, but not to electrically connect the electronic input path to the electronic output path in the second rotational configuration of the rotator assembly or in the second translational position of the rotator assembly.