Smart AGC Gain Profiling for Multi-Standard RF Amplifiers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional wireless communication systems face challenges in providing flexible automatic gain control (AGC) for multi-standard and multi-band transceivers, as they need to adjust amplifier gains optimally across different wireless standards, which complicates the control process and burdens the baseband digital signal processor (DSP).
Innovation Solution
A separate smart AGC module is introduced that collects parameters and determines a gain profile based on the active standard and amplifier characteristics, allowing it to control individual amplifiers independently, thereby relieving the DSP from direct gain control and optimizing gain adjustments for noise figure, power efficiency, and linearity requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional AGC control methods are used in multi-standard transceivers, then the baseband DSP can directly control amplifier gains, but the computational burden on the DSP increases and the control process becomes complicated
Solution Approach 1:
The patent divides the AGC control function into separate modules: a gain control module that determines overall gain requirements and individual amplifier control modules that independently adjust their gains based on collected parameters and performance requirements. This segmentation reduces the computational burden on the baseband DSP while maintaining multi-standard compatibility.
Solution Approach 2:
The patent introduces an intermediary AGC control module between the baseband DSP and the amplifiers. This intermediary collects parameters from multiple sources, determines performance requirements for different wireless standards, and generates optimized control signals for individual amplifiers, thereby simplifying the overall control process while supporting multi-standard operations.
2Reliability
If amplifier gains are adjusted to meet different wireless standards, then performance requirements (noise figure, power efficiency, linearity) can be met, but the number of parameters to collect and control increases
Solution Approach 1:
The patent creates a universal AGC control module that handles multiple wireless standards (GSM, W-CDMA, WiFi, LTE, etc.) through a single integrated structure. This module collects various parameters (amplifier gains, noise figures, power consumption, linearity) and applies unified control logic that adapts to different standards, reducing overall system complexity while ensuring performance compliance.
Solution Approach 2:
The patent dynamically adjusts amplifier control parameters based on the active wireless standard and performance requirements. The gain control module changes gain values, and the control module adapts control strategies according to different standards' specific requirements for noise figure, power efficiency, and linearity, enabling flexible parameter optimization without increasing structural complexity.
Data Source
AI summary
One embodiment of the present invention provides an automatic gain control (AGC) module for a wireless communication system that includes a plurality of amplifiers. The AGC module includes a receiving mechanism configured to receive an input that indicates a total amount of gain adjustment; a collecting mechanism configured to collect a number of parameters associated with the amplifiers; a determining mechanism configured to determine a desired performance requirement; a gain-control engine configured to generate a gain profile for the amplifiers based on the collected parameters, the total amount of gain, and the desired performance requirement; and an output mechanism configured to output a plurality of control signals based on the generated gain profile, wherein a respective control signal independently controls gain of a corresponding amplifier, thereby enabling the wireless communication system to achieve the total amount of gain adjustment while meeting the desired performance requirement.