Three-Stage Transistor Circuit With Shared DC Paths for Low-Voltage Gain
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Solution Overview
Problem
Current current reuse electronic circuits face performance degradation when reducing voltage per stage, requiring high voltage power supplies to maintain performance, especially when increasing the number of transistor stages.
Innovation Solution
An electronic circuit design with a three-stage transistor structure that uses a common coupling point to connect two distinct direct current paths, allowing for reduced voltage application across each transistor while maintaining high performance by impedance matching and potential difference management between transistors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the number of transistor stages is increased to improve performance, then the gain is improved, but the voltage requirement increases requiring high voltage power supply
Solution Approach 1:
The patent merges multiple DC current paths into a unified structure where currents from different transistor stages are combined and reused. The DC current from the power supply is distributed through multiple paths that converge at common coupling points, allowing the same current to serve multiple stages and reducing the overall voltage requirement while maintaining high gain performance.
Solution Approach 2:
The DC current paths are designed to serve multiple functions simultaneously. The same DC current path supplies power to multiple transistor stages and provides biasing for different components. This multi-functional design allows the circuit to achieve high performance with reduced voltage requirements by maximizing the utilization of available current.
2Use of energy by moving object
If the voltage of each stage is reduced to use low voltage power supply, then the power consumption is reduced, but the performance of the electronic circuit is degraded
Solution Approach 1:
The patent changes the electrical parameters of the circuit by implementing specific impedance matching conditions and biasing schemes. By carefully controlling the impedance relationships between components and optimizing the DC operating points, the circuit achieves high performance with reduced voltage swings, allowing low voltage operation without performance degradation.
Solution Approach 2:
The DC current flows continuously through multiple stages and components, providing sustained power and biasing throughout the circuit. This continuous current flow ensures that all transistor stages operate in their optimal regions throughout the signal cycle, maintaining high performance even with reduced voltage amplitude.
3Power
If high voltage power supply is used to maintain performance with multiple stages, then the gain is maintained, but the device complexity and power supply requirements increase
Solution Approach 1:
The patent segments the power supply architecture into multiple independent DC current paths that can be independently designed and optimized. Each path serves specific transistor stages and can be tailored to local requirements, simplifying the overall power supply design while maintaining high gain performance across all stages.
Data Source
AI summary
An electronic circuit includes: first through third transistors having a control terminal, first and second terminals; a first direct current path supplying a direct current having passed through between the first terminal and the second terminal of at least one of the second transistor and the third transistor to the second terminal of the transistor at former position compared to the transistor through which the direct current passed; a second direct current path that is different from the first direct current path and supplies a direct current having passed through between the first terminal and the second terminal of at least one of the second transistor and the third transistor to the second terminal of the transistor at former position compared to the transistor through which the direct current passed; and a common coupling point coupling the first direct current path and the second direct current path in common.