Power Amplifier State Switching for Channel Bandwidth Power Saving
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Solution Overview
Problem
Terminals with third-party power amplifiers experience high power consumption and reduced endurance due to fixed working states in high-pass systems, especially when operating in wider channel bandwidths, leading to inefficient power management.
Innovation Solution
A method and apparatus for adjusting the working state of a power amplifier (PA) based on determined target channel bandwidth, allowing switching between multiple working modes, including APT and ET modes, to optimize power supply voltage and output power, thereby reducing power consumption and enhancing terminal endurance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the PA operates in fixed working states in high-pass systems, then the system stability is maintained, but power consumption increases and terminal endurance decreases
Solution Approach 1:
The patent implements dynamic adjustment of PA working states based on real-time channel bandwidth detection. The system transitions from fixed static operating modes to dynamic state switching, where the PA adapts its working state (e.g., full power, partial power, standby) according to the actual communication requirements, thereby reducing unnecessary power consumption while maintaining system stability through controlled transitions.
Solution Approach 2:
The patent changes the operating parameters of the PA by adjusting its working state according to channel bandwidth. Different channel bandwidths (e.g., 1.4MHz, 3MHz, 5MHz, 10MHz) correspond to different optimal PA working states. By changing parameters such as output power level and operating mode based on bandwidth requirements, the system achieves energy efficiency without compromising reliability.
2Device complexity
If the PA operates in fixed working states, then the device complexity is reduced, but adaptability to different channel bandwidths deteriorates
Solution Approach 1:
The system introduces dynamic adaptability by enabling the PA to switch between multiple working states based on detected channel bandwidth. This dynamic behavior allows the same hardware to adapt to various communication scenarios (different bandwidths) without requiring separate dedicated circuits for each mode, thus maintaining relatively simple device architecture while achieving high adaptability.
Solution Approach 2:
The patent makes the PA universally adaptable to different channel bandwidths by implementing a multi-functional working state mechanism. A single PA can perform multiple functions (operate in different bandwidths) by switching its internal working state, eliminating the need for multiple specialized PAs or complex reconfiguration circuits, thereby achieving versatility with minimal increase in device complexity.
3Productivity
If the PA operates in wider channel bandwidths, then the communication capacity is improved, but power consumption increases due to fixed working states
Solution Approach 1:
The patent implements dynamic power management where the PA's working state is adjusted according to the required communication capacity. When wider channel bandwidths are needed for high data rates, the system activates appropriate working states that provide the necessary power and performance. When bandwidth requirements are lower, the system transitions to more energy-efficient states, thus maintaining high communication capacity when needed while reducing power consumption during normal operation.
Solution Approach 2:
The system changes the PA's operating parameters dynamically based on communication capacity requirements. For wider channel bandwidths requiring higher communication capacity, the PA is configured with parameters optimized for high performance. For narrower bandwidths, parameters are adjusted to reduce power consumption. This parameter adaptation allows the system to achieve high productivity when needed without permanently operating at high power levels.
Data Source
AI summary
A working state adjustment method is applied to a terminal. A power amplifier (PA) is arranged on the terminal. The method includes: determining a target channel bandwidth in which the terminal works; determining a target working state in which the PA works among optional working states according to the target channel bandwidth, in which the optional working states correspond to at least two types of working modes respectively; and adjusting the PA to work in the target working state.