RF Receiver AGC-Based Power Mode Control for Battery Life
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Solution Overview
Problem
Current power management systems in mobile communication devices are inefficient in optimizing power consumption, leading to reduced battery life and increased size and weight, particularly in RF integrated circuits used in wireless communication systems.
Innovation Solution
The implementation of a power management circuitry that adjusts power supply signals and power modes based on Automatic Gain Control (AGC) signals, allowing for dynamic adjustment of transmit power levels and power consumption parameters to optimize energy usage in RF transceivers, thereby extending battery life and reducing device size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If power management systems operate at fixed power levels, then device simplicity is maintained, but power consumption efficiency deteriorates
Solution Approach 1:
The patent implements dynamic power management by adjusting power supply signals based on AGC signals. The power management circuitry transitions from fixed power levels to variable power levels that adapt to real-time signal conditions, resolving the contradiction between energy efficiency and system complexity
Solution Approach 2:
The system uses AGC (Automatic Gain Control) signals as feedback to dynamically adjust power supply signals. This feedback mechanism enables the power management system to respond to changing signal conditions, improving power consumption efficiency while maintaining manageable complexity through established control theory
2Duration of action of moving object
If battery capacity is increased to extend battery life, then operating duration is improved, but device weight and size increase
Solution Approach 1:
The patent maintains continuous communication operation by dynamically adjusting power levels rather than allowing the device to shut down. By continuously adapting transmit power to signal conditions, the system extends effective battery life without requiring larger battery capacity, thus avoiding increased weight
Solution Approach 2:
The system changes the power consumption parameter dynamically based on AGC signals. By varying power levels during operation, the device optimizes energy usage throughout the battery's capacity, effectively extending operational duration without increasing battery size or device weight
3Reliability
If transmit power is increased to maintain communication quality, then signal reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic adjustability of transmit power based on real-time AGC signal conditions. Rather than operating at fixed high power levels, the system adapts power output to match actual communication needs, maintaining reliability while reducing unnecessary power consumption
Solution Approach 2:
The system uses AGC (Automatic Gain Control) signals as feedback to determine appropriate transmit power levels. This feedback loop ensures communication reliability is maintained by adjusting power based on received signal quality, while avoiding excessive power consumption when signal conditions are good
Data Source
AI summary
An integrated circuit (IC) includes an RF receiver having an AGC module that generates an automatic gain control (AGC) signal based on a strength of a received signal, and a low noise amplifier that amplifies the received signal based on the AGC signal. A processing module generates a power mode signal based on the AGC signal, the power mode signal for adjusting a power consumption parameter of the IC based on the power mode signal.