Linear Amplifier Feedback Path for Low-Complexity Linearity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing linear amplifying circuits are complex, costly, and power-consuming, and are limited to single-amplifier systems, requiring additional components that increase size and power consumption.
Innovation Solution
A linear amplifying device comprising an amplifying circuit, attenuator, linearizer, and phase shifter, with optional components like capacitors and current sources, to improve linearity and reduce complexity and power consumption, applicable to multi-amplifier systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If additional circuits or components are used to calculate and adjust input/output signals, then linearity of the amplifier is improved, but costs, size, and power consumption significantly increase
Solution Approach 1:
The patent extracts the essential linearization function from complex additional circuits and implements it through a simplified feedback mechanism using basic amplifier components. The feedback path takes out only the necessary signal adjustment operations, eliminating unnecessary circuits while maintaining linearity improvement.
Solution Approach 2:
The amplifier system performs self-linearization through internal feedback without requiring external adjustment mechanisms. The feedback loop automatically detects and corrects non-linearities in the output signal, allowing the system to self-adjust and maintain linearity without additional complex components.
2Reliability
If excessive operations and adjustment mechanisms are implemented, then amplifier performance is improved, but circuit complexity, costs, and power consumption increase
Solution Approach 1:
The patent implements a feedback mechanism where the output signal is fed back to the input through a controlled path. This feedback loop continuously monitors amplifier performance and automatically adjusts the signal to maintain optimal operation, improving reliability without requiring excessive external adjustment mechanisms.
Solution Approach 2:
The invention changes the operational parameters of existing amplifier components through feedback control rather than adding new components. By dynamically adjusting parameters such as gain and signal timing through the feedback path, the system achieves improved performance using the same basic circuit elements.
3Manufacturing precision
If existing linear amplifying circuits are used, then linearity is achieved, but they are limited to single-amplifier systems and not applicable to multi-amplifier systems
Solution Approach 1:
The patent designs a feedback mechanism that can be universally applied to both single-amplifier and multi-amplifier systems. The feedback path and control logic are configured to handle multiple amplifier outputs simultaneously, allowing the same circuit architecture to maintain linearity across different system configurations without requiring system-specific redesign.
Data Source
AI summary
A linear amplifying device and a linear amplifying method are related to the linear amplifying device including an amplifying circuit, an attenuator, a linearizer, and a phase shifter. The attenuator, the linearizer and the phase shifter are connected in series and in order between an input terminal of the amplifying circuit and an output terminal of the amplifying circuit. The linear amplifying method includes receiving an input signal, generating an output signal according to the input signal and a gain, attenuating the output signal, generating a non-linear carrier wave in the attenuated output signal; adjusting a phase of the non-linear carrier wave to generate a feedback signal; and generating another output signal according to the input signal, the feedback signal, and the gain.