MEMS Phase Shifter Bridge Structure for Fast Low-Voltage Release
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional MEMS phase shifters face challenges in quickly separating the bridging section from the signal line due to adhesion, leading to increased response time and potential collapse during phase shifting, which can be exacerbated by higher driving voltages required to maintain the bridging section's position.
Innovation Solution
The phase shifter design includes a bridging section with a spindle-shaped structure and support elements, an isolation layer, and specific material combinations to enhance deformation and support, allowing for faster separation and reduced driving voltage, while preventing collapse through optimized stress distribution and structural enhancements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If higher driving voltages are applied to maintain the bridging section's position, then the bridging section can be kept away from the signal line, but the response time increases and structural collapse risk increases
Solution Approach 1:
The bridging section is designed as a movable dynamic structure that can switch between two positions: close to the signal line for low voltage states and away for high voltage states. This dynamic design allows the system to respond quickly to voltage changes without requiring continuously high driving voltages, thus reducing both response time and the risk of structural collapse while maintaining position stability when needed.
Solution Approach 2:
The patent changes the physical parameters of the bridging section including its width, thickness, and material composition to optimize the balance between electrostatic force and structural strength. By adjusting these parameters, the bridging section can maintain stable positioning at lower driving voltages, reducing response time and minimizing collapse risk while still achieving effective separation from the signal line.
2Use of energy by moving object
If the bridging section is made closer to the signal line, then driving voltage can be reduced, but separation speed decreases due to adhesion
Solution Approach 1:
The bridging section is pre-designed with optimized geometric parameters (width, thickness, shape) that create sufficient electrostatic force even at small distances from the signal line. This preliminary optimization of structural parameters allows the system to achieve effective separation at lower driving voltages without sacrificing separation speed, as the geometry itself contributes to the electrostatic interaction strength.
Solution Approach 2:
The patent introduces additional design dimensions beyond simple distance control, including the bridging section's width, thickness, and profile shape. By optimizing these dimensional parameters, the system achieves effective separation at smaller gaps without relying solely on high voltage, thus maintaining separation speed while reducing the required driving voltage through geometric optimization.
3Ease of manufacture
If conventional structures are used, then manufacturing is simpler, but structural collapse occurs during phase shifting
Solution Approach 1:
The bridging section employs local quality optimization by varying its width, thickness, and material properties at different locations along its length. The structure features wider sections for strength, narrower sections for flexibility, and strategically placed thicker regions for stress concentration management. This localized optimization maintains manufacturing simplicity while significantly improving structural stability during phase shifting operations.
Solution Approach 2:
The patent utilizes composite material structures combining different materials with complementary properties - typically a conductive material for the bridging section that provides both electrical functionality and mechanical strength. This composite approach maintains ease of manufacture through standard fabrication processes while enhancing structural stability to prevent collapse during operation.
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 improved design reduces response time and driving voltage requirements, ensuring rapid phase shifting and minimizing structural damage, thereby enhancing the performance and reliability of the phase shifter.
Implementation Method 1
Conventional MEMS phase shifters face challenges in quickly separating the bridging section from the signal line due to adhesion
Implementation Method 2
a phase shifter unit includes a substrate, a first lead and a second lead on the substrate and spaced apart from each other, a bridging section on the first lead and the second lead
Data Source
AI summary
A phase shifter and a method for preparing a phase shifter are provided. The phase shifter includes at least one phase shifter unit. The phase shifter unit includes a substrate; a first lead and a second lead on the substrate and spaced apart from each other; a bridging section on the first lead and the second lead, wherein the bridging section is connected to the first lead and the second lead; and a third lead on a side of the bridging section away from the substrate.