Switchable Power Amplifier Topology for Efficiency and Output Power
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Solution Overview
Problem
Current power amplifiers either consume excessive power or prioritize output power over efficiency, lacking a solution that balances both energy efficiency and high output power performance.
Innovation Solution
A power amplifier design that incorporates multiple transistors and bias components, along with a series of switches, allowing adaptive operation between energy-efficient and high-output power modes by controlling the configuration of these components based on control signals, switching between inverter-type and common source/emitter amplifier configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If an inverter-type power amplifier is used, then power consumption is reduced, but output power is limited
Solution Approach 1:
The patent implements a dynamic switching mechanism that allows the power amplifier to transition between inverter-type configuration (for low power consumption) and common source configuration (for high output power) based on operational requirements. The switching circuit dynamically reconfigures the transistor connections, enabling the system to adapt its characteristics in real-time rather than being fixed in one mode.
Solution Approach 2:
The power amplifier circuit is designed to perform multiple functions by incorporating both inverter-type and common source amplifier configurations within a single circuit architecture. Through the switching mechanism, the same hardware can operate in power-saving mode or high-performance mode, making the amplifier universal enough to handle diverse application requirements without needing separate dedicated circuits.
2Power
If a common source power amplifier is used, then output power is increased, but power consumption increases
Solution Approach 1:
The switching circuit enables dynamic reconfiguration of the amplifier topology. When high output power is required, the circuit switches to common source configuration; when power consumption is the priority, it switches to inverter-type configuration. This dynamic adaptation allows the system to optimize its power-output characteristics based on real-time demands.
Solution Approach 2:
The patent changes the operational parameters of the amplifier by switching between different circuit configurations. The switching mechanism alters the effective circuit topology, transforming the amplifier from a common source configuration (high power, high consumption) to an inverter-type configuration (lower power, lower consumption), thereby adjusting parameters to match operational requirements.
3Use of energy by moving object
If a power amplifier is designed to prioritize power consumption efficiency, then energy efficiency is improved, but maximum transmission distance deteriorates
Solution Approach 1:
The switching mechanism enables the power amplifier to dynamically adapt between energy-efficient mode (inverter-type) and high-performance mode (common source). When maximum transmission distance is required, the system switches to common source configuration to provide the necessary output power; when energy efficiency is the priority and transmission requirements are lower, it operates in inverter-type mode.
4Reliability
If a power amplifier is designed to prioritize maximum transmission distance, then output power is increased, but power consumption increases
Solution Approach 1:
The switching circuit allows the amplifier to dynamically switch between configurations optimized for different priorities. When maximum transmission distance is the goal, the system activates common source configuration for high output power; when power consumption needs to be reduced while maintaining adequate transmission capability, it switches to inverter-type configuration.
Data Source
AI summary
The present invention discloses a power amplifier capable of adaptively operating in one of an energy efficient mode and a high output power mode. An embodiment of the power amplifier includes a first transistor, a second transistor, a first bias element, a second bias element, a third bias element and a plurality of switches. In the energy efficient mode, by the control over the on/off states of the switches, an inverter type power amplifier is realized with the first transistor, the second transistor, the second bias element and the third bias element. In the high output power mode, by the control over the on/off states of the switches, a common source amplifier or a common emitter amplifier is realized with the second transistor and the first bias element.