Plasma Component Synchronization to Prevent Measurement Aliasing
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Solution Overview
Problem
Current plasma processing systems face challenges in achieving precise control over complex, interdependent plasma processing equipment due to strong modulation of plasma properties, which can lead to aliasing of measurements and improper operation of modulating supplies.
Innovation Solution
A plasma processing system with a synchronization module and waveform communication module to synchronize equipment connected to the plasma system, using a synchronization signal with a repetition period that is an integer multiple of the modulation period, and communicating a characterized waveform dataset to ensure precise control over plasma properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If modulating supplies are used to control plasma properties, then plasma processing precision is improved, but aliasing of measurements occurs and system reliability deteriorates
Solution Approach 1:
The patent applies periodic action by using a modulating supply that periodically modulates plasma properties at a specific repetition period. The synchronization signal is designed with a repetition period that is an integer multiple of the plasma modulation period, creating coordinated periodic actions that prevent aliasing while maintaining processing precision.
Solution Approach 2:
The synchronization module implements feedback by monitoring the plasma modulation period and adjusting the synchronization signal repetition period accordingly. The waveform communication module provides feedback about the characterized waveform to ensure proper synchronization, preventing measurement aliasing while maintaining system reliability.
2Measurement precision
If synchronization control is implemented, then measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The synchronization module serves multiple functions: it generates synchronization signals, communicates waveform characteristics, and coordinates equipment operation. By consolidating these functions into a single module, the patent improves measurement accuracy without proportionally increasing device complexity.
Solution Approach 2:
The waveform communication module acts as an intermediary between the modulating supply and the measurement equipment. It transmits characterized waveform information and synchronization signals, enabling accurate measurements without requiring direct complex interactions between all system components.
3Productivity
If equipment synchronization is achieved, then operational efficiency is improved, but system complexity increases
Solution Approach 1:
The patent merges the synchronization signal generation and waveform communication functions into an integrated synchronization module. This consolidation improves operational efficiency by coordinating equipment operation while minimizing the increase in system complexity through functional integration.
Solution Approach 2:
The synchronization system uses periodic signals with repetition periods that are integer multiples of the plasma modulation period. This periodic coordination enables efficient equipment synchronization without requiring complex real-time control algorithms, thereby improving productivity with moderate complexity increase.
Data Source
AI summary
Plasma processing systems and methods are disclosed. The system may include at least one modulating supply that modulates plasma properties where the modulation of the plasma properties has a repetition period, T. A synchronization module configured to send a synchronization signal with a synchronization-signal-repetition-period that is an integer multiple of T to at least one piece of equipment connected to the plasma processing system. A waveform-communication module communicates characteristics of a characterized waveform to at least one piece of equipment connected to the plasma system to enable synchronization of pieces of equipment connected to the plasma processing system. The characterized waveform may contain information about the modulation of the plasma or information about a desired waveform of a piece of equipment connected to the plasma processing system.