Continuous Phase Imbalance Correction for I/Q Signal Alignment
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Solution Overview
Problem
Existing signal transmission systems face inefficiencies due to phase mismatches between in-phase and quadrature signals, leading to power loss and data loss, particularly in modulation techniques like quadrature amplitude modulation (QAM), where ideal 90-degree phase differences are not maintained.
Innovation Solution
A system incorporating a continuous phase corrector with a phase detector, comparator, and amplifiers that continuously monitor and adjust the phase response of signals to achieve the desired phase difference, ensuring accurate phase alignment without disrupting the operation of transmitters or receivers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional transmitter and receiver systems are used without phase correction, then the system structure is simple, but phase mismatches occur between in-phase and quadrature signals leading to power loss and data loss
Solution Approach 1:
The system is divided into separate functional modules: a phase detector to measure phase differences, a comparator to evaluate the measured phase against a reference, and an amplifier to generate correction signals. This segmentation allows each component to address a specific aspect of phase correction, reducing overall power loss while maintaining manageable system complexity
Solution Approach 2:
The patent implements a feedback mechanism where the phase detector continuously monitors the phase difference between in-phase and quadrature signals, the comparator processes this information, and the amplifier applies corrective feedback signals to maintain the desired 90-degree phase relationship. This closed-loop feedback system effectively reduces power loss by dynamically correcting phase mismatches
2Reliability
If phase correction is implemented using traditional methods, then phase alignment is improved, but the transmitter or receiver operation is disrupted
Solution Approach 1:
The phase correction mechanism operates in advance to maintain proper phase alignment before signal transmission or reception occurs. The phase detector continuously measures phase differences and the amplifier applies corrections proactively, ensuring that when signals are transmitted or received, the phase relationship is already optimized, thus maintaining operational continuity without disruption
Solution Approach 2:
The patent employs continuous phase detection and correction during normal transmitter or receiver operation. The phase detector, comparator, and amplifier work continuously to maintain the 90-degree phase relationship between in-phase and quadrature signals without interrupting the operational flow, ensuring both high reliability and continuous productivity
3Loss of information
If real-time phase correction is applied, then data loss is reduced, but the system requires continuous monitoring and adjustment
Solution Approach 1:
The phase detection, comparison, and correction functions are merged into an integrated system where the phase detector, comparator, and amplifier work as a unified phase correction unit. This merging reduces data loss through effective real-time correction while managing monitoring complexity by combining multiple functions into a coordinated system rather than separate independent components
Data Source
AI summary
Methods, apparatus, systems and articles of manufacture are disclosed to provide phase imbalance correction. An example system includes a phase detector to obtain a first signal and generate a first output, a comparator coupled to the phase detector, the comparator to generate a second output based on the first output, and an amplifier coupled to the comparator, the amplifier to adjust a first phase response of the first signal based on the second output.