Phase Control System Using Amplitude-Modulated Mixing
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Solution Overview
Problem
Current phase control systems for signals face limitations in achieving high phase resolution and amplification of phase shifts, which are essential for precise applications such as measuring small phase changes and internal structures, due to constraints in phase difference manipulation and amplitude ratios.
Innovation Solution
The method involves selecting a phase difference and amplitude ratio between input and reference signals such that changes in the phase difference result in significantly amplified or reduced phase shifts at the output, utilizing a phase-shift division factor to achieve higher resolution and amplification, allowing for precise control of phase shifts and measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional phase control systems are used, then basic phase control is achieved, but phase resolution and amplification capability are limited
Solution Approach 1:
The patent changes the operating parameters of the phase control system by selecting specific phase differences (e.g., close to 0 or π radians) and amplitude ratios between input and reference signals. This parameter optimization enables the system to achieve high phase resolution and amplification capability, resolving the contradiction between measurement precision and control reliability
Solution Approach 2:
The patent introduces dynamic phase-shift division factor that can be adjusted based on operating conditions. By making the phase control system adaptive and dynamic rather than static, the system can maintain high phase resolution across different operating points while ensuring reliable phase control accuracy
2Power
If phase difference manipulation is constrained, then system stability is maintained, but phase shift amplification is limited
Solution Approach 1:
The patent introduces an intermediary processing stage that manipulates the phase difference between input and reference signals through controlled amplitude ratios. This intermediary mechanism enables phase shift amplification without requiring complex direct manipulation, thus increasing power capability while managing device complexity
Solution Approach 2:
The patent segments the phase control process into distinct stages: generating input and reference signals with specific phase differences, combining them through amplitude-modulated mixing, and extracting the amplified phase shift. This segmentation allows each stage to be optimized independently, achieving high phase shift amplification while keeping individual components manageable in complexity
Data Source
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AI summary
A method of generating a signal being phase-shifted at a predetermined phase- shift division factor relative to a reference signal is disclosed. The method comprises: using the predetermined phase-shift division factor for selecting a modulation amplitude, modulating a control signal at the selected modulation amplitude, and combining the reference signal and the control signal to form the phase- shifted.