Phased Array Distortion Redirection for Spectral Purity
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Solution Overview
Problem
Conventional coaxial cable networks are costly, inefficient, and ineffective, and phased arrays face issues with distortion caused by power amplifiers, which are co-directional with desired signals, affecting spectral purity.
Innovation Solution
The implementation of distortion redirection in phased arrays by redirecting power amplifier distortion in a controlled manner, using adaptive techniques to rotate distortion vectors based on antenna indices, allowing the distortion to be directed away from the desired signal path, thereby enhancing spectral purity and security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If power amplifiers are used in phased arrays, then signal transmission capability is improved, but distortion is generated that is co-directional with desired signals, degrading spectral purity
Solution Approach 1:
The patent applies distortion redirection techniques that convert the harmful co-directional distortion generated by power amplifiers into a beneficial configuration by rotating distortion vectors away from the desired signal path. This is achieved through adaptive techniques that calculate and apply rotation angles to distortion vectors based on antenna indices, effectively transforming the harmful distortion into a spatially separated component that no longer degrades spectral purity in the desired signal direction
2Object-generated harmful factors
If conventional distortion mitigation techniques are used, then spectral purity may be improved, but precise modeling and feedback paths are required, increasing system complexity
Solution Approach 1:
The patent implements a self-service approach where the distortion redirection system uses the inherent structure of the phased array (antenna indices and beamforming weights) to automatically determine distortion vector rotations. The system calculates rotation angles based on the relationship between antenna elements and desired signal directions, eliminating the need for external precise modeling or complex feedback paths while maintaining spectral purity improvements
3Object-generated harmful factors
If distortion is redirected away from the desired signal path, then spectral purity is enhanced, but the distortion energy must be redirected somewhere, potentially affecting other directions
Solution Approach 1:
The patent applies local quality by directing distortion redirection specifically toward directions where interference is acceptable or less critical. The system calculates rotation angles that redirect distortion vectors away from the desired signal path while considering the spatial distribution of antenna elements and beamforming patterns, ensuring that distortion energy is redirected to directions where it causes minimal harm rather than uniformly distributing it
Data Source
AI summary
Systems and methods are provided for distortion redirection in phased arrays. In an electronic device configured for transmission and reception of signals and having a two-dimensional phased array, effects of distortion, corresponding to at least one processing function applied during communication of signals, on the communication of signals may be assessed, and based on the effects of distortion, one or more adjustments for mitigating the effects of distortion may be configured and applied during processing of signals. Assessing the effects of distortion may include determining one or more characteristics associated with the communication of the signals, where the one or more characteristics relate and/or are subject to the effects of the distortion, and assessing the effects of distortion based on the one or more characteristics.