Consolidated RF Filter Layout for Shared Switch Control
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Solution Overview
Problem
In semiconductor manufacturing and other processes, the high number of RF filters required to protect electrical components from destructive radio frequency environments is costly and space-consuming, as each component needs a separate filter to prevent damage.
Innovation Solution
A consolidated filter arrangement where multiple switches in an RF environment share a single power line and filter, with switching signals transmitted via a non-conductive communication link to reduce the number of filters needed, allowing for real-time control of elements both inside and outside the RF environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate filter is provided for each electrical component, then each component is protected from RF damage, but the number of filters increases, increasing cost and size
Solution Approach 1:
Multiple electrical components (switches controlling heating elements) are merged into a common RF environment and share a single filter on their common power line, rather than each component having its own separate filter. This consolidation reduces the total number of filters while maintaining protection for all components.
Solution Approach 2:
A single filter serves multiple electrical components simultaneously by being placed on their common power line. The filter provides universal protection to all components connected to that power line, making one filter perform the function of multiple separate filters.
2Reliability
If multiple filters are used to protect each component, then component protection is ensured, but the equipment size increases
Solution Approach 1:
The patent consolidates multiple filters into a single filter by placing electrical components in a common RF environment and using a shared power line. This merging reduces the total equipment volume occupied by filters while maintaining protection functionality.
3Reliability
If electrical components are located outside the RF environment, then they are protected from damage, but the number of filters increases and control complexity increases
Solution Approach 1:
The patent merges multiple electrical components into a single RF environment and uses a common power line with one filter, reducing the total number of filters needed compared to having each component outside the RF environment with its own filter.
Solution Approach 2:
A single filter acts as an intermediary on the common power line, protecting multiple components from RF damage without requiring each component to be isolated outside the RF environment. The filter mediates between the RF environment and all connected components.
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
This approach reduces the cost and size of equipment by minimizing the number of filters, while enabling efficient and complex control of elements within the RF environment, thereby optimizing resource usage and reducing the risk of component damage.
Implementation Method 1
the power line being coupled to a filter that blocks RF noise from traveling along the power line into the RF environment
Implementation Method 2
switching signals from a processing device external to the RF environment over a non-conductive communication link
Data Source
AI summary
A method includes generating, external to a radio frequency (RF) environment and based on a process recipe, a first signal and a second signal. The method further includes converting the first signal into an alternative signal and transmitting, over a non-conductive communication link, the alternative signal to a converter within the RF environment within a processing chamber of a substrate processing system. The method further includes converting the alternative signal into a third signal by the converter inside the RF environment within the processing chamber. The method further includes controlling a first plurality of elements disposed within the RF environment within the processing chamber via one or more first devices disposed within the RF environment within the processing chamber using the third signal and controlling a second plurality of elements of the substrate processing system via one or more second devices of the substrate processing system using the second signal.